{"id":3791,"date":"2026-01-16T14:03:19","date_gmt":"2026-01-16T06:03:19","guid":{"rendered":"https:\/\/calcium-carbonate.epic-powder.com\/?p=3791"},"modified":"2026-03-20T14:55:06","modified_gmt":"2026-03-20T06:55:06","slug":"what-are-calcium-carbonate-whiskers","status":"publish","type":"post","link":"https:\/\/calcium-carbonate.epic-powder.com\/pt\/what-are-calcium-carbonate-whiskers\/","title":{"rendered":"O que s\u00e3o os filamentos de carbonato de c\u00e1lcio?"},"content":{"rendered":"<p>Os whiskers s\u00e3o materiais monocristalinos que crescem em formato filamentoso ou semelhante a uma agulha. Assemelham-se a fibras curtas, mas suas dimens\u00f5es s\u00e3o muito menores. Os materiais dos whiskers podem ser classificados em whiskers org\u00e2nicos e inorg\u00e2nicos. Materiais inorg\u00e2nicos comuns incluem SiC, Si\u2083N\u2084, K\u2082Ti\u2081\u2083O\u2083\u2080, Al\u2081\u2088B\u2084O\u2083\u2083, ZnO, MgO, Al\u2082O\u2083 e CaCO\u2083. A estrutura at\u00f4mica dentro de um whisker \u00e9 altamente ordenada. Seus di\u00e2metros est\u00e3o tipicamente na escala microm\u00e9trica. Como resultado, os whiskers praticamente n\u00e3o cont\u00eam defeitos comumente encontrados em cristais volumosos, como deslocamentos, vazios ou imperfei\u00e7\u00f5es estruturais. Devido \u00e0 aus\u00eancia desses defeitos, a resist\u00eancia e o m\u00f3dulo de elasticidade dos whiskers s\u00e3o pr\u00f3ximos aos valores te\u00f3ricos de cristais perfeitos.<\/p>\n\n\n\n<p>Portanto, os whiskers apresentam alta resist\u00eancia, alto m\u00f3dulo de elasticidade, resist\u00eancia \u00e0 corros\u00e3o e resist\u00eancia a altas temperaturas. Eles s\u00e3o amplamente utilizados em papel, borracha, materiais de fric\u00e7\u00e3o e concreto.<\/p>\n\n\n\n<p><strong>Principais par\u00e2metros f\u00edsicos de fibras inorg\u00e2nicas<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Bigode<\/th><th>Densidade \/(g\/cm\u00b3)<\/th><th>Di\u00e2metro \/\u03bcm<\/th><th>Comprimento \/\u03bcm<\/th><th>Resist\u00eancia \u00e0 tra\u00e7\u00e3o \/GPa<\/th><th>M\u00f3dulo de elasticidade \/GPa<\/th><th>Dureza de Mohs<\/th><th>Coeficiente de expans\u00e3o t\u00e9rmica \/(10\u207b\u2076\/\u00b0C)<\/th><th>Ponto de fus\u00e3o \/\u00b0C<\/th><th>Resist\u00eancia ao calor \/\u00b0C<\/th><\/tr><\/thead><tbody><tr><td>SiC<\/td><td>3.18<\/td><td>0,05\u20137<\/td><td>5\u2013200<\/td><td>21<\/td><td>490<\/td><td>9<\/td><td>4.0<\/td><td>2690<\/td><td>1600<\/td><\/tr><tr><td>Si\u2083N\u2084<\/td><td>3.2<\/td><td>0,1\u20131,6<\/td><td>5\u2013200<\/td><td>14<\/td><td>380<\/td><td>3.0<\/td><td>\u2014<\/td><td>1900<\/td><td>1700<\/td><\/tr><tr><td>K\u2082Ti\u2084O\u2089<\/td><td>3.3<\/td><td>0,1\u20131,5<\/td><td>10\u2013100<\/td><td>7<\/td><td>280<\/td><td>4<\/td><td>6.8<\/td><td>1370<\/td><td>1200<\/td><\/tr><tr><td>Al\u2081\u2088B\u2084O\u2083\u2083<\/td><td>2.93<\/td><td>0,5\u20131<\/td><td>10\u201320<\/td><td>8<\/td><td>400<\/td><td>7<\/td><td>4.2<\/td><td>1950<\/td><td>1200<\/td><\/tr><tr><td>ZnO<\/td><td>5.78<\/td><td>5<\/td><td>2\u2013300<\/td><td>10<\/td><td>350<\/td><td>4<\/td><td>4.0<\/td><td>1720<\/td><td>\u2014<\/td><\/tr><tr><td>MgO<\/td><td>3.6<\/td><td>3,0\u201310<\/td><td>200\u2013300<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>13.5<\/td><td>2850<\/td><td>2800<\/td><\/tr><tr><td>Al\u2082O\u2083<\/td><td>3.96<\/td><td>\u2014<\/td><td>\u2014<\/td><td>21<\/td><td>430<\/td><td>\u2014<\/td><td>\u2014<\/td><td>2040<\/td><td>\u2014<\/td><\/tr><tr><td>CaCO\u2083<\/td><td>2.8<\/td><td>1\u20135<\/td><td>20\u201360<\/td><td>\u2014<\/td><td>\u2014<\/td><td>3<\/td><td>\u2014<\/td><td>759<\/td><td>640<\/td><\/tr><tr><td>CaSO\u2084<\/td><td>2.69<\/td><td>1\u20134<\/td><td>100\u2013200<\/td><td>20.5<\/td><td>178<\/td><td>3\u20134<\/td><td>\u2014<\/td><td>1450<\/td><td>\u2014<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/\">Carbonato de c\u00e1lcio<\/a> Bigodes<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"331\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Crystal-structure-of-calcium-carbonate-whiskers.webp\" alt=\"\" class=\"wp-image-3794\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Crystal-structure-of-calcium-carbonate-whiskers.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Crystal-structure-of-calcium-carbonate-whiskers-300x124.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Crystal-structure-of-calcium-carbonate-whiskers-768x318.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Crystal-structure-of-calcium-carbonate-whiskers-18x7.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Os cristais de carbonato de c\u00e1lcio (CW) s\u00e3o p\u00f3s brancos. Sob observa\u00e7\u00e3o microsc\u00f3pica, apresentam-se como cristais \u00fanicos em forma de agulha ou fibra. O comprimento t\u00edpico \u00e9 de cerca de 20\u201330 \u03bcm e o di\u00e2metro de cerca de 0,5\u20131,0 \u03bcm. O ponto de fus\u00e3o \u00e9 de aproximadamente 759 \u00b0C e a densidade \u00e9 de 2,86 g\/cm\u00b3.<\/p>\n\n\n\n<p>Os whiskers de carbonato de c\u00e1lcio s\u00e3o um novo tipo de material inorg\u00e2nico de fibra curta. Apresentam alta brancura, excelente capacidade de preenchimento e alta resist\u00eancia \u00e0 tra\u00e7\u00e3o. Diferentes morfologias de whiskers de carbonato de c\u00e1lcio podem ser obtidas ajustando-se as condi\u00e7\u00f5es termodin\u00e2micas, como press\u00e3o, temperatura e concentra\u00e7\u00e3o, ou adicionando-se modificadores de crescimento cristalino \u00e0 solu\u00e7\u00e3o. Com base na estrutura cristalina, os whiskers de carbonato de c\u00e1lcio podem ser divididos em tr\u00eas tipos: tipo calcita, tipo aragonita e tipo vaterita.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Est\u00e1gio de desenvolvimento dos filamentos de carbonato de c\u00e1lcio<\/h2>\n\n\n\n<p>Os whiskers de carbonato de c\u00e1lcio t\u00eam baixo custo, o que ajuda a reduzir as despesas gerais de produ\u00e7\u00e3o. S\u00e3o comumente usados como agentes de refor\u00e7o e tenacifica\u00e7\u00e3o ou como cargas inorg\u00e2nicas funcionais em materiais ciment\u00edcios, pl\u00e1sticos, revestimentos e materiais de fric\u00e7\u00e3o.<\/p>\n\n\n\n<p>Os filamentos de carbonato de c\u00e1lcio s\u00e3o considerados um novo tipo de carga. Empresas japonesas, como a Maruo, estiveram entre as pioneiras na comercializa\u00e7\u00e3o de produtos com filamentos de carbonato de c\u00e1lcio. O desenvolvimento na China come\u00e7ou relativamente tarde. No entanto, na \u00faltima d\u00e9cada, tanto os resultados das pesquisas quanto os produtos comerciais aumentaram rapidamente.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e9todos de prepara\u00e7\u00e3o de fibras de carbonato de c\u00e1lcio<\/h2>\n\n\n\n<p>Os principais m\u00e9todos de prepara\u00e7\u00e3o incluem carbonata\u00e7\u00e3o, rea\u00e7\u00e3o de dupla decomposi\u00e7\u00e3o, hidr\u00f3lise da ureia, m\u00e9todo sol-gel e cristaliza\u00e7\u00e3o por gravidade. Dentre eles, o m\u00e9todo de carbonata\u00e7\u00e3o \u00e9 simples, consolidado e energeticamente eficiente. Atualmente, \u00e9 o principal processo industrial.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Preparation-of-calcium-carbonate-whiskers.webp\" alt=\"Prepara\u00e7\u00e3o de fibras de carbonato de c\u00e1lcio\" class=\"wp-image-3793\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Preparation-of-calcium-carbonate-whiskers.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Preparation-of-calcium-carbonate-whiskers-300x171.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Preparation-of-calcium-carbonate-whiskers-768x439.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Preparation-of-calcium-carbonate-whiskers-18x10.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p><strong>Caracter\u00edsticas das t\u00e9cnicas de prepara\u00e7\u00e3o de fibras de carbonato de c\u00e1lcio<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>M\u00e9todo<\/th><th>Agente de Controle de Cristal<\/th><th>Vantagens<\/th><th>Desvantagens<\/th><\/tr><\/thead><tbody><tr><td>M\u00e9todo de carbonata\u00e7\u00e3o<\/td><td>Obrigat\u00f3rio<\/td><td>Processo simples, adequado para produ\u00e7\u00e3o industrial.<\/td><td>Requer agentes de controle, para introduzir impurezas.<\/td><\/tr><tr><td>Met\u00e1tese \/ M\u00e9todo de dupla decomposi\u00e7\u00e3o<\/td><td>N\u00e3o \u00e9 necess\u00e1rio<\/td><td>Alta rela\u00e7\u00e3o de aspecto, alta pureza<\/td><td>Baixo rendimento, ciclo de rea\u00e7\u00e3o longo<\/td><\/tr><tr><td>M\u00e9todo de hidr\u00f3lise da ureia<\/td><td>N\u00e3o \u00e9 necess\u00e1rio<\/td><td>Alta lisura superficial, alta pureza<\/td><td>Propor\u00e7\u00e3o de aspecto pequena, alto consumo de energia<\/td><\/tr><tr><td>M\u00e9todo de decomposi\u00e7\u00e3o do bicarbonato de c\u00e1lcio<\/td><td>N\u00e3o \u00e9 necess\u00e1rio<\/td><td>Bigodes mais longos, pureza relativamente alta<\/td><td>Uniformidade deficiente, di\u00e2metro de bigode grande<\/td><\/tr><tr><td>M\u00e9todo sol-gel<\/td><td>Obrigat\u00f3rio<\/td><td>Controle de processo f\u00e1cil, boa uniformidade<\/td><td>Introduz impurezas com facilidade<\/td><\/tr><tr><td>M\u00e9todo de ultragravidade\/hipergravidade<\/td><td>Obrigat\u00f3rio<\/td><td>Propor\u00e7\u00e3o de aspecto grande, ciclo de produ\u00e7\u00e3o curto<\/td><td>Requer equipamentos especiais e alto investimento.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de carbonata\u00e7\u00e3o<\/h3>\n\n\n\n<p>No m\u00e9todo de carbonata\u00e7\u00e3o, o di\u00f3xido de carbono \u00e9 introduzido em uma suspens\u00e3o de hidr\u00f3xido de c\u00e1lcio previamente preparada. Em seguida, s\u00e3o adicionados agentes controladores da forma dos cristais para formar precipitados de carbonato de c\u00e1lcio, tipicamente carbonato de c\u00e1lcio do tipo aragonita. Este m\u00e9todo \u00e9 semelhante ao processo g\u00e1s-l\u00edquido utilizado na produ\u00e7\u00e3o industrial de carbonato de c\u00e1lcio precipitado. Portanto, tamb\u00e9m \u00e9 conhecido como m\u00e9todo g\u00e1s-l\u00edquido. \u00c9 o m\u00e9todo mais amplamente estudado, tanto nacional quanto internacionalmente.<\/p>\n\n\n\n<p>Na produ\u00e7\u00e3o industrial em larga escala, duas quest\u00f5es-chave devem ser abordadas. Primeiro, a vaz\u00e3o de CO\u2082 e sua dispers\u00e3o na suspens\u00e3o devem ser cuidadosamente controladas. Isso evita a supersatura\u00e7\u00e3o local excessiva, que pode levar \u00e0 forma\u00e7\u00e3o de impurezas de calcita ou carbonato de c\u00e1lcio e magn\u00e9sio. Segundo, a recupera\u00e7\u00e3o e a reutiliza\u00e7\u00e3o dos agentes de controle de cristais usados durante a carbonata\u00e7\u00e3o ainda representam um desafio.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de precipita\u00e7\u00e3o qu\u00edmica<\/h3>\n\n\n\n<p>O m\u00e9todo de precipita\u00e7\u00e3o qu\u00edmica envolve a rea\u00e7\u00e3o de uma solu\u00e7\u00e3o de carbonato com concentra\u00e7\u00e3o adequada com uma solu\u00e7\u00e3o de sal de c\u00e1lcio sol\u00favel ou pouco sol\u00favel, sob condi\u00e7\u00f5es controladas, para produzir precipitados de carbonato de c\u00e1lcio. Na maioria dos casos, esse m\u00e9todo produz carbonato de c\u00e1lcio do tipo calcita. O carbonato de c\u00e1lcio do tipo aragonita s\u00f3 pode ser sintetizado controlando-se rigorosamente as condi\u00e7\u00f5es de rea\u00e7\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de dupla decomposi\u00e7\u00e3o<\/h3>\n\n\n\n<p>O m\u00e9todo de dupla decomposi\u00e7\u00e3o utiliza sais de c\u00e1lcio e carbonatos sol\u00faveis que reagem lentamente sob temperatura controlada e agita\u00e7\u00e3o, frequentemente por adi\u00e7\u00e3o gota a gota. Os sais de c\u00e1lcio s\u00e3o tipicamente CaCl\u2082. Os carbonatos comumente incluem Na\u2082CO\u2083 ou K\u2082CO\u2083. Este m\u00e9todo \u00e9 ecologicamente correto e simples. Os filamentos resultantes apresentam uma rela\u00e7\u00e3o de aspecto relativamente alta, superf\u00edcie lisa e alta pureza. No entanto, o rendimento \u00e9 baixo e o tempo de rea\u00e7\u00e3o \u00e9 longo.<\/p>\n\n\n\n<p>\u00c9 importante controlar a concentra\u00e7\u00e3o de CaCl\u2082. Se for muito alta, ocorrer\u00e1 supersatura\u00e7\u00e3o local de Ca\u00b2\u207a. Isso aumenta a for\u00e7a motriz da cristaliza\u00e7\u00e3o e promove a forma\u00e7\u00e3o de calcita est\u00e1vel em vez de aragonita.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de aquecimento da solu\u00e7\u00e3o de Ca(HCO\u2083)\u2082<\/h3>\n\n\n\n<p>Neste m\u00e9todo, uma solu\u00e7\u00e3o de bicarbonato de c\u00e1lcio com determinada concentra\u00e7\u00e3o \u00e9 aquecida a uma temperatura espec\u00edfica. O Ca(HCO\u2083)\u2082 decomp\u00f5e-se em \u00e1gua, di\u00f3xido de carbono e carbonato de c\u00e1lcio. \u00c9 necess\u00e1rio um controle rigoroso da velocidade de agita\u00e7\u00e3o e da temperatura de rea\u00e7\u00e3o para garantir o crescimento adequado dos filamentos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de Adi\u00e7\u00e3o Cont\u00ednua de Hidr\u00f3xido de C\u00e1lcio<\/h3>\n\n\n\n<p>Este m\u00e9todo separa a nuclea\u00e7\u00e3o do crescimento dos filamentos. Sob a indu\u00e7\u00e3o de cloreto de magn\u00e9sio, um grande n\u00famero de n\u00facleos \u00e9 formado inicialmente. Em seguida, hidr\u00f3xido de c\u00e1lcio \u00e9 adicionado continuamente. Controlando-se a taxa de adi\u00e7\u00e3o de hidr\u00f3xido de c\u00e1lcio, a concentra\u00e7\u00e3o de \u00edons de c\u00e1lcio \u00e9 mantida em um n\u00edvel subsaturado. Isso permite que os filamentos de carbonato de c\u00e1lcio cres\u00e7am em comprimento, produzindo filamentos do tipo aragonita de grande tamanho.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de cristaliza\u00e7\u00e3o por rea\u00e7\u00e3o de supergravidade<\/h3>\n\n\n\n<p>Este m\u00e9todo \u00e9 semelhante \u00e0 s\u00edntese de carbonato de c\u00e1lcio em supergravidade. Uma solu\u00e7\u00e3o de cloreto de magn\u00e9sio com determinada concentra\u00e7\u00e3o \u00e9 introduzida em uma suspens\u00e3o de hidr\u00f3xido de c\u00e1lcio sob um campo de supergravidade gerado por um rotor empacotado girat\u00f3rio de alta velocidade.<\/p>\n\n\n\n<p>O cloreto de magn\u00e9sio atua como agente controlador da forma cristalina. Utilizando Ca(OH)\u2082\u2013CO\u2082 como sistema de rea\u00e7\u00e3o, fibras de carbonato de c\u00e1lcio s\u00e3o preparadas ajustando-se par\u00e2metros como velocidade do rotor, vaz\u00e3o do l\u00edquido, vaz\u00e3o do g\u00e1s, temperatura de carbonata\u00e7\u00e3o e concentra\u00e7\u00e3o de cloreto de magn\u00e9sio.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de hidr\u00f3lise da ureia<\/h3>\n\n\n\n<p>No m\u00e9todo de hidr\u00f3lise da ureia, o CO\u2082 gerado durante a hidr\u00f3lise reage com sais de c\u00e1lcio sol\u00faveis para formar cristais de carbonato de c\u00e1lcio.<\/p>\n\n\n\n<p>A chave para esse m\u00e9todo \u00e9 o controle das condi\u00e7\u00f5es de rea\u00e7\u00e3o, como temperatura e press\u00e3o. Isso garante uma taxa de hidr\u00f3lise da ureia lenta e proporciona um ambiente de baixa supersatura\u00e7\u00e3o adequado para a nuclea\u00e7\u00e3o e o crescimento dos filamentos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de Descarboxila\u00e7\u00e3o de \u00c1cidos Carbox\u00edlicos<\/h3>\n\n\n\n<p>Neste m\u00e9todo, o \u00e1cido ac\u00e9tico reage com o hidr\u00f3xido de c\u00e1lcio para formar solu\u00e7\u00f5es de acetato de c\u00e1lcio em diferentes concentra\u00e7\u00f5es. Essas solu\u00e7\u00f5es sofrem hidr\u00f3lise a temperatura constante. Fibras de aragonita de alta pureza podem ser obtidas em concentra\u00e7\u00f5es que variam de 0,05 a 0,6 mol\u00b7L\u207b\u00b9. Quando aquecidos, os \u00e1cidos carbox\u00edlicos org\u00e2nicos liberam CO\u2082 por meio da descarboxila\u00e7\u00e3o. A taxa de libera\u00e7\u00e3o de CO\u2082 pode ser controlada, criando um ambiente homog\u00eaneo para a precipita\u00e7\u00e3o de carbonatos.<\/p>\n\n\n\n<p>Este m\u00e9todo requer equipamentos e condi\u00e7\u00f5es de rea\u00e7\u00e3o relativamente simples. No entanto, deve-se ter cuidado para evitar a forma\u00e7\u00e3o de CaCO\u2083 do tipo calcita.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/surface-modification\/\">Modifica\u00e7\u00e3o de superf\u00edcie <\/a>de fibras de carbonato de c\u00e1lcio<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"643\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-modification.webp\" alt=\"Modifica\u00e7\u00e3o de fibras de carbonato de c\u00e1lcio\" class=\"wp-image-3795\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-modification.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-modification-300x241.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-modification-768x617.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-modification-15x12.webp 15w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Finalidade da Modifica\u00e7\u00e3o<\/h3>\n\n\n\n<p>Os principais objetivos da modifica\u00e7\u00e3o de fibras de carbonato de c\u00e1lcio s\u00e3o:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Para reduzir a coes\u00e3o entre as part\u00edculas e melhorar a dispers\u00e3o.<\/li>\n\n\n\n<li>Para melhorar a atividade da superf\u00edcie.<\/li>\n\n\n\n<li>Para melhorar a compatibilidade com outros materiais.<\/li>\n\n\n\n<li>Para aumentar a resist\u00eancia aos \u00e1cidos.<\/li>\n\n\n\n<li>Para controlar a morfologia das vibrissas em diferentes aplica\u00e7\u00f5es.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Processos de Modifica\u00e7\u00e3o<\/h3>\n\n\n\n<p><strong>Tratamento a seco<\/strong><\/p>\n\n\n\n<p>No tratamento a seco, os filamentos de carbonato de c\u00e1lcio s\u00e3o processados em um misturador ou amassadeira de alta velocidade. Agentes de tratamento de superf\u00edcie s\u00e3o adicionados durante a mistura para revestir os filamentos. Este m\u00e9todo \u00e9 simples e adequado para produ\u00e7\u00e3o cont\u00ednua e automatizada. No entanto, a uniformidade do revestimento \u00e9 limitada. \u00c9 adequado para diversos agentes de acoplamento e modificadores de superf\u00edcie org\u00e2nicos.<\/p>\n\n\n\n<p><strong>Tratamento \u00famido<\/strong><\/p>\n\n\n\n<p>No tratamento \u00famido, os modificadores de superf\u00edcie s\u00e3o adicionados diretamente a uma suspens\u00e3o de carbonato de c\u00e1lcio. Esse m\u00e9todo proporciona excelentes efeitos de revestimento e \u00e9 amplamente utilizado.<\/p>\n\n\n\n<p>O tratamento a seco permite o acondicionamento direto ap\u00f3s o processamento. O tratamento \u00famido oferece melhor cobertura da superf\u00edcie e \u00e9 particularmente adequado para a s\u00edntese em fase l\u00edquida de nanocarbonato de c\u00e1lcio. Os modificadores de superf\u00edcie comuns incluem \u00e1cidos graxos (e seus sais) e \u00e9steres de fosfato.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Equipamento para modifica\u00e7\u00e3o de fibras de carbonato de c\u00e1lcio<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"749\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Coating-machine-1.webp\" alt=\"M\u00e1quina de revestimento\" class=\"wp-image-3256\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Coating-machine-1.webp 750w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Coating-machine-1-300x300.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Coating-machine-1-150x150.webp 150w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Coating-machine-1-12x12.webp 12w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<p>Os equipamentos t\u00edpicos utilizados para a modifica\u00e7\u00e3o da superf\u00edcie de fibras de carbonato de c\u00e1lcio incluem uma gama de moinhos de alta cisalhamento e alta dispers\u00e3o, projetados para obter revestimento uniforme, desaglomera\u00e7\u00e3o e entrada de energia controlada:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/machines\/pin-mill-coating-machine\/\">Moinho de pinos<\/a><\/strong>Amplamente utilizado para a modifica\u00e7\u00e3o superficial a seco de fibras de carbonato de c\u00e1lcio. A alta velocidade do rotor gera fortes for\u00e7as de impacto e cisalhamento, permitindo a dispers\u00e3o eficiente das fibras e a fixa\u00e7\u00e3o uniforme de agentes de acoplamento ou \u00e1cidos graxos. Adequado para produ\u00e7\u00e3o cont\u00ednua e controle preciso da dosagem do revestimento.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/machines\/turbo-mill-coating-machine\/\">Moinho turbo<\/a><\/strong>Utiliza l\u00e2minas rotativas de alta velocidade para criar turbul\u00eancia e cisalhamento intensos. Os moinhos turbo s\u00e3o eficazes para moagem, desaglomera\u00e7\u00e3o e modifica\u00e7\u00e3o de superf\u00edcie simult\u00e2neas, especialmente para aplica\u00e7\u00f5es que exigem distribui\u00e7\u00e3o granulom\u00e9trica estreita e boa fluidez.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/machines\/three-roller-coating-machine\/\">Moinho de tr\u00eas rolos<\/a><\/strong>Aplicado principalmente em sistemas pastosos ou de alta viscosidade, como fibras modificadas por via \u00famida utilizadas em tintas, revestimentos e adesivos. A forte for\u00e7a de cisalhamento entre os rolos garante excelente dispers\u00e3o e quebra aglomerados macios, melhorando a cobertura da superf\u00edcie e a consist\u00eancia.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/machines\/cell-mill-coating-machine\/\">Moinho Multirotores<\/a><\/strong>Apresenta m\u00faltiplos rotores operando em diferentes velocidades, proporcionando a\u00e7\u00f5es repetidas de impacto, cisalhamento e mistura. Esse design aumenta a efici\u00eancia do contato entre o modificador e as fibras, sendo adequado para modifica\u00e7\u00e3o industrial de alto rendimento com qualidade est\u00e1vel do produto.<\/li>\n\n\n\n<li><strong>Equipamento auxiliar<\/strong>Dependendo do processo, as linhas de modifica\u00e7\u00e3o de superf\u00edcie podem incluir misturadores de alta velocidade, reatores de agita\u00e7\u00e3o \u00famida, m\u00e1quinas de revestimento cont\u00ednuo e secadores subsequentes, como secadores instant\u00e2neos ou secadores por pulveriza\u00e7\u00e3o. Essas unidades ajudam a remover a umidade residual, minimizando a aglomera\u00e7\u00e3o de fibras.<\/li>\n<\/ul>\n\n\n\n<p>A sele\u00e7\u00e3o do equipamento de modifica\u00e7\u00e3o depende do m\u00e9todo de modifica\u00e7\u00e3o (seco ou \u00famido), da aplica\u00e7\u00e3o pretendida, da uniformidade de revestimento exigida e da capacidade de produ\u00e7\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Aplica\u00e7\u00f5es de fibras de carbonato de c\u00e1lcio<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Pl\u00e1sticos<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"760\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/Calcium-Carbonate-in-Plastic-Films.webp\" alt=\"Carbonato de c\u00e1lcio em filmes pl\u00e1sticos\" class=\"wp-image-3759\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/Calcium-Carbonate-in-Plastic-Films.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/Calcium-Carbonate-in-Plastic-Films-300x285.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/Calcium-Carbonate-in-Plastic-Films-768x730.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/Calcium-Carbonate-in-Plastic-Films-13x12.webp 13w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Carbonato de c\u00e1lcio em filmes pl\u00e1sticos<\/figcaption><\/figure>\n\n\n\n<p>Os whiskers de carbonato de c\u00e1lcio s\u00e3o comumente usados como cargas em PVC, PS, PP, ABS e outros pl\u00e1sticos de engenharia. Eles melhoram a estabilidade t\u00e9rmica, a resist\u00eancia ao impacto, a rigidez e a resist\u00eancia mec\u00e2nica. Al\u00e9m disso, as propriedades reol\u00f3gicas dos pl\u00e1sticos s\u00e3o aprimoradas ap\u00f3s a adi\u00e7\u00e3o de uma quantidade adequada de whiskers. Isso \u00e9 particularmente importante para aplica\u00e7\u00f5es de pl\u00e1sticos de alta qualidade.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"516\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-addition-amount.webp\" alt=\"Quantidade de adi\u00e7\u00e3o de fibras de carbonato de c\u00e1lcio\" class=\"wp-image-3792\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-addition-amount.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-addition-amount-300x194.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-addition-amount-768x495.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-whisker-addition-amount-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Revestimentos<\/h3>\n\n\n\n<p>Existe um forte impedimento est\u00e9rico entre os \u00e1tomos de carbono e oxig\u00eanio no carbonato de c\u00e1lcio. Quando adicionado a revestimentos, esse efeito est\u00e9rico aumenta significativamente e suprime a sedimenta\u00e7\u00e3o. A alta brancura dos whiskers de carbonato de c\u00e1lcio aumenta o brilho e o lustro do revestimento sem reduzir o poder de cobertura. A estabilidade de armazenamento \u00e9 significativamente melhorada.<\/p>\n\n\n\n<p>Devido aos seus efeitos est\u00e9ricos, os whiskers podem deslocar os picos de absor\u00e7\u00e3o para comprimentos de onda mais curtos. Em produtos de l\u00e1tex, eles ajudam a proteger contra a radia\u00e7\u00e3o e a melhorar a resist\u00eancia ao envelhecimento. Como cargas inorg\u00e2nicas, os whiskers de carbonato de c\u00e1lcio melhoram a flexibilidade, a suavidade da superf\u00edcie, as propriedades de autonivelamento, a forma\u00e7\u00e3o de pel\u00edcula e a permeabilidade dos revestimentos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Adesivos e Selantes<\/h3>\n\n\n\n<p>Os whiskers de carbonato de c\u00e1lcio s\u00e3o amplamente utilizados como cargas e agentes de refor\u00e7o em selantes. Por um lado, podem substituir parcialmente aditivos caros, reduzindo significativamente os custos gerais de produ\u00e7\u00e3o. Por outro lado, sua estrutura molecular e cristalina \u00fanica melhora o desempenho de processamento dos selantes de silicone. Observam-se melhorias not\u00e1veis nas propriedades mec\u00e2nicas, como resist\u00eancia \u00e0 tra\u00e7\u00e3o e resist\u00eancia \u00e0 fratura. Na produ\u00e7\u00e3o industrial, controlando a forma cristalina, a morfologia, o tamanho das part\u00edculas e a modifica\u00e7\u00e3o da superf\u00edcie dos whiskers de carbonato de c\u00e1lcio, \u00e9 poss\u00edvel obter sistemas selantes com excelente comportamento tixotr\u00f3pico e desempenho antideslizante.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tintas<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"366\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-for-ink.webp\" alt=\"Carbonato de c\u00e1lcio para tinta\" class=\"wp-image-3796\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-for-ink.webp 750w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-for-ink-300x146.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/Calcium-carbonate-for-ink-18x9.webp 18w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<p>As excelentes propriedades f\u00edsico-qu\u00edmicas dos cristais de carbonato de c\u00e1lcio os tornam aditivos altamente atrativos na ind\u00fastria de tintas. Essas vantagens se refletem principalmente na boa dispers\u00e3o do p\u00f3, alta transpar\u00eancia, secagem adequada, excelente brilho e forte capacidade de absor\u00e7\u00e3o de tinta.<\/p>\n\n\n\n<p>Devido \u00e0s suas caracter\u00edsticas moleculares, os cristais de carbonato de c\u00e1lcio s\u00e3o comumente usados como cargas em tintas \u00e0 base de resina. Comparados ao carbonato de c\u00e1lcio gelatinoso, os cristais apresentam desempenho mais est\u00e1vel, melhor fidelidade de cor, maior adaptabilidade de aplica\u00e7\u00e3o e a capacidade de manter as caracter\u00edsticas de secagem originais. Como resultado, s\u00e3o frequentemente usados na ind\u00fastria para substituir o carbonato de c\u00e1lcio gelatinoso, que \u00e9 mais caro.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fabrica\u00e7\u00e3o de papel<\/h3>\n\n\n\n<p>Os filamentos de carbonato de c\u00e1lcio apresentam uma estrutura \u00fanica em forma de agulha. Essa estrutura melhora a taxa de preenchimento do papel, a resist\u00eancia \u00e0 tra\u00e7\u00e3o e a durabilidade da dobra.<\/p>\n\n\n\n<p>Al\u00e9m disso, a elevada rela\u00e7\u00e3o de aspecto e a morfologia em forma de agulha permitem que os filamentos de carbonato de c\u00e1lcio se entrelacem com as fibras do papel. Isso forma estruturas semelhantes \u00e0s agulhas de mulita no cimento. Como resultado, o impacto negativo na ades\u00e3o fibra-fibra \u00e9 m\u00ednimo, enquanto a reten\u00e7\u00e3o e a durabilidade do papel s\u00e3o efetivamente aprimoradas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Materiais de fric\u00e7\u00e3o<\/h3>\n\n\n\n<p>Os filamentos de carbonato de c\u00e1lcio oferecem excelente resist\u00eancia ao calor, alta resist\u00eancia mec\u00e2nica, alto m\u00f3dulo de elasticidade e baixo custo de mat\u00e9ria-prima. Essas caracter\u00edsticas melhoram significativamente a resist\u00eancia ao desgaste de materiais de fric\u00e7\u00e3o, mantendo os custos de fabrica\u00e7\u00e3o mais baixos do que os de materiais resistentes ao desgaste tradicionais. Estudos demonstraram que os filamentos de carbonato de c\u00e1lcio podem prevenir a redu\u00e7\u00e3o da resist\u00eancia ao desgaste e do coeficiente de atrito em altas temperaturas. Essa descoberta tem sido amplamente aplicada em pastilhas de freio e materiais de embreagem automotivos.<\/p>\n\n\n\n<p>Quando fibras de carbonato de c\u00e1lcio s\u00e3o incorporadas ao poli\u00e9ter \u00e9ter cetona (PEEK), tanto o coeficiente de atrito quanto a taxa de desgaste espec\u00edfica diminuem. Ao mesmo tempo, a estabilidade t\u00e9rmica, a rigidez e a capacidade de suportar carga s\u00e3o aprimoradas. O amolecimento t\u00e9rmico e a ades\u00e3o durante o atrito tamb\u00e9m s\u00e3o efetivamente suprimidos. Quando o teor de fibras atinge 15% em peso (%), a taxa de desgaste espec\u00edfica \u00e9 minimizada e melhora em aproximadamente sete vezes em compara\u00e7\u00e3o com o PEEK puro.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"602\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/brake-pads.webp\" alt=\"pastilhas de freio\" class=\"wp-image-3797\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/brake-pads.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/brake-pads-300x226.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/brake-pads-768x578.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/01\/brake-pads-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Materiais \u00d3sseos Artificiais<\/h3>\n\n\n\n<p>Fibras de carbonato de c\u00e1lcio implantadas no tecido \u00f3sseo s\u00e3o gradualmente reabsorvidas. Ap\u00f3s aproximadamente 12 semanas, tornam-se dif\u00edceis de detectar in vivo.<br>Portanto, os filamentos de carbonato de c\u00e1lcio podem servir como cargas de refor\u00e7o para materiais polim\u00e9ricos biodegrad\u00e1veis.<\/p>\n\n\n\n<p>Os cristais de carbonato de c\u00e1lcio s\u00e3o levemente alcalinos. Quando o pH do meio circundante est\u00e1 entre 9 e 9,5, mesmo que entrem em contato com o corpo humano, eles se decomp\u00f5em em condi\u00e7\u00f5es fisiol\u00f3gicas \u00e1cidas e n\u00e3o representam nenhum risco. Isso indica um grande potencial para aplica\u00e7\u00f5es biom\u00e9dicas, embora a pesquisa nessa \u00e1rea, tanto nacional quanto internacional, ainda seja limitada.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Aditivos para cimento<\/h3>\n\n\n\n<p>Por ser um material com excelentes propriedades mec\u00e2nicas, os filamentos de carbonato de c\u00e1lcio podem preencher microfissuras e poros na pasta de cimento endurecida.<br>Isso melhora significativamente tanto o desempenho mec\u00e2nico quanto a integridade microestrutural dos materiais \u00e0 base de cimento.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/contact\/\">Conclus\u00e3o<\/a><\/h2>\n\n\n\n<p>Os filamentos de carbonato de c\u00e1lcio s\u00e3o um novo material funcional e de constru\u00e7\u00e3o promissor. Embora as tecnologias de prepara\u00e7\u00e3o ainda n\u00e3o estejam totalmente consolidadas e as aplica\u00e7\u00f5es em larga escala ainda estejam em expans\u00e3o, eles oferecem vantagens de custo-benef\u00edcio excepcionais e um forte potencial de aplica\u00e7\u00e3o. Apresentam excelente rigidez, estabilidade dimensional e estabilidade t\u00e9rmica. Quando incorporados em produtos pl\u00e1sticos, combinam rigidez com a tenacidade dos materiais polim\u00e9ricos, ampliando assim a gama de aplica\u00e7\u00f5es dos pl\u00e1sticos existentes.<\/p>\n\n\n\n<p>Devido aos seus not\u00e1veis efeitos de refor\u00e7o e tenacifica\u00e7\u00e3o, baixa tend\u00eancia \u00e0 aglomera\u00e7\u00e3o e boa dispersibilidade, os whiskers de carbonato de c\u00e1lcio s\u00e3o amplamente utilizados em cargas para cimento, fabrica\u00e7\u00e3o de papel e materiais de fric\u00e7\u00e3o. Al\u00e9m disso, sua estrutura cristalina completa, baixa densidade de defeitos, baixo custo e processo de prepara\u00e7\u00e3o simples os tornam cargas ideais para aumentar a resist\u00eancia, o m\u00f3dulo de elasticidade, a resist\u00eancia a \u00e1lcalis e o desempenho mec\u00e2nico geral de materiais comp\u00f3sitos.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized is-style-rounded\"><img loading=\"lazy\" decoding=\"async\" width=\"721\" height=\"721\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen.webp\" alt=\"Emily Chen\" class=\"wp-image-3708\" style=\"width:150px;height:150px\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen.webp 721w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-300x300.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-150x150.webp 150w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-12x12.webp 12w\" sizes=\"(max-width: 721px) 100vw, 721px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote has-text-align-center is-style-large is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Obrigado pela leitura. Espero que meu artigo tenha ajudado. Deixe um coment\u00e1rio abaixo. Voc\u00ea tamb\u00e9m pode entrar em contato com o suporte online da Zelda para quaisquer outras d\u00favidas.<\/p>\n<cite>                                                                                                                                      \u2014 Publicado por <a href=\"https:\/\/www.linkedin.com\/company\/76603359\/admin\/dashboard\/\">Emily Chen<\/a><\/cite><\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"16\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/pt\/wp-json\/wp\/v2\/posts\/3791#wpcf7-f16-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/pt\/wp-json\/wp\/v2\/posts\/3791#wpcf7-f16-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"16\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.3\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f16-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<div class=\"keen-form\">\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Seu nome*\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Seu email*\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"pnone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Seu Pnone ou Whatsapp*\" value=\"\" type=\"tel\" name=\"pnone\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-subject\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"Sua empresa\" value=\"\" type=\"text\" name=\"your-subject\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"3\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" placeholder=\"Sua mensagem\" name=\"your-message\"><\/textarea><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Enviar\" \/>\n\t\t<\/p>\n\t<\/div>\n<\/div>\n<style>\n.keen-form div{margin-bottom:5px;}\n.keen-form div p{margin-bottom:0px !important;}\n.one-half,.one-third {\n position: relative;\n margin-right: 4%;\n float: left;\n z-index: 99;\n}\n.one-half { width: 40%; }\n.one-third { width: 30.66%; }\n.last {\n margin-right: 0 !important;\n clear: right;\nwidth: 40%;\n}\n@media only screen and (max-width: 767px) {\n .one-half, .one-third {\n width: 90%;\n margin-right: 0;\n }\n}\n<\/style><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<input type=\"hidden\" name=\"trp-form-language\" value=\"pt\"\/><\/form>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Produ\u00e7\u00e3o GCC: Tecnologia avan\u00e7ada de moinho de bolas e moinho de pinos da Qingdao EPIC \ud83c\udf1f\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/-6lSAM2gR2A?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>","protected":false},"excerpt":{"rendered":"<p>Os whiskers s\u00e3o materiais monocristalinos que crescem em formato filamentoso ou semelhante a uma agulha. Eles se assemelham a fibras curtas, mas suas dimens\u00f5es s\u00e3o muito menores. Os materiais dos whiskers podem ser classificados em whiskers org\u00e2nicos e whiskers inorg\u00e2nicos. Materiais inorg\u00e2nicos comuns para whiskers incluem SiC, Si\u2083N\u2084, K\u2082Ti\u2081\u2083O\u2083\u2080, Al\u2081\u2088B\u2084O\u2083\u2083, ZnO, MgO, Al\u2082O\u2083 e CaCO\u2083. A estrutura at\u00f4mica dentro de um whisker \u00e9 altamente [\u2026]<\/p>","protected":false},"author":1,"featured_media":3795,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[7,6],"tags":[],"class_list":["post-3791","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-surface-modification","category-ultrafine-powder-grinding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What Are Calcium Carbonate Whiskers? - Calcium Carbonate Production Line<\/title>\n<meta name=\"description\" content=\"Calcium Carbonate Whiskers are high-aspect-ratio inorganic fillers that provide strong reinforcement, good dispersion, and cost efficiency for plastics, adhesives, coatings, paper, cement, and friction materials.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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