{"id":3864,"date":"2026-04-16T14:35:15","date_gmt":"2026-04-16T06:35:15","guid":{"rendered":"https:\/\/calcium-carbonate.epic-powder.com\/?p=3864"},"modified":"2026-04-16T14:35:18","modified_gmt":"2026-04-16T06:35:18","slug":"how-does-calcium-carbonate-surface-modification-achieve-success-through-process-innovation-modifier-selection-and-industrial-practice","status":"publish","type":"post","link":"https:\/\/calcium-carbonate.epic-powder.com\/fr\/how-does-calcium-carbonate-surface-modification-achieve-success-through-process-innovation-modifier-selection-and-industrial-practice\/","title":{"rendered":"Comment la modification de surface au carbonate de calcium r\u00e9ussit-elle gr\u00e2ce \u00e0 l&#039;innovation des proc\u00e9d\u00e9s, la s\u00e9lection des modificateurs et les pratiques industrielles ?"},"content":{"rendered":"<p><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/\">Carbonate de calcium<\/a> Il s&#039;agit de la charge min\u00e9rale inorganique la plus utilis\u00e9e et la plus abondante. Cependant, ses caract\u00e9ristiques de surface naturellement hydrophiles et ol\u00e9ophobes entra\u00eenent une faible compatibilit\u00e9 avec les mat\u00e9riaux polym\u00e8res organiques tels que les plastiques, le caoutchouc et les r\u00e9sines. Ajout\u00e9 directement, il a tendance \u00e0 s&#039;agglom\u00e9rer, ce qui affecte consid\u00e9rablement les performances de transformation et les propri\u00e9t\u00e9s m\u00e9caniques des produits d\u00e9riv\u00e9s.<\/p>\n\n\n\n<p>La modification de surface est une \u00e9tape essentielle du traitement en profondeur du carbonate de calcium. Par des m\u00e9thodes physiques, chimiques ou m\u00e9canochimiques, elle modifie les propri\u00e9t\u00e9s physico-chimiques de la surface des particules, leur conf\u00e9rant lipophilie, dispersibilit\u00e9 et fonctionnalit\u00e9. Cette technologie est un facteur cl\u00e9 pour transformer le carbonate de calcium, simple charge, en un mat\u00e9riau fonctionnel de haute qualit\u00e9.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"728\" height=\"441\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/Surface-modification-of-calcium-carbonate.webp\" alt=\"Modification de surface du carbonate de calcium\" class=\"wp-image-3526\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/Surface-modification-of-calcium-carbonate.webp 728w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/Surface-modification-of-calcium-carbonate-300x182.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/Surface-modification-of-calcium-carbonate-18x12.webp 18w\" sizes=\"(max-width: 728px) 100vw, 728px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">I. Importance et objectifs fondamentaux du carbonate de calcium <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/surface-modification\/\">Modification des surfaces<\/a><\/h2>\n\n\n\n<p>La modification de surface est essentielle pour exploiter pleinement le potentiel du carbonate de calcium. Son principal int\u00e9r\u00eat r\u00e9side dans la r\u00e9solution des probl\u00e8mes de compatibilit\u00e9 entre le carbonate de calcium et les matrices organiques. Parall\u00e8lement, elle optimise la dispersibilit\u00e9, la stabilit\u00e9 et la fonctionnalit\u00e9, am\u00e9liorant ainsi la qualit\u00e9 et la valeur ajout\u00e9e des produits d\u00e9riv\u00e9s.<\/p>\n\n\n\n<p>Pour le carbonate de calcium ultrafin et nanom\u00e9trique, la diminution de la taille des particules entra\u00eene une augmentation significative de l&#039;\u00e9nergie de surface. L&#039;attraction interparticulaire s&#039;intensifie, accentuant l&#039;agglom\u00e9ration. Par cons\u00e9quent, la n\u00e9cessit\u00e9 d&#039;une modification de surface devient encore plus cruciale.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Objectifs de modification principaux<\/h3>\n\n\n\n<p>Les objectifs de la modification de surface du carbonate de calcium peuvent \u00eatre r\u00e9sum\u00e9s en quatre aspects\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Am\u00e9lioration de la compatibilit\u00e9<\/strong>Convertir la surface d&#039;hydrophile \u00e0 lipophile. Ceci am\u00e9liore l&#039;adh\u00e9rence interfaciale avec les mat\u00e9riaux organiques tels que les plastiques et le caoutchouc, et emp\u00eache l&#039;agglom\u00e9ration.<\/li>\n\n\n\n<li><strong>Am\u00e9lioration de la dispersibilit\u00e9<\/strong>Rupture des forces d&#039;agglom\u00e9ration interparticulaire. Garantie d&#039;une dispersion uniforme dans les matrices organiques afin d&#039;optimiser les fonctions de remplissage et de renforcement.<\/li>\n\n\n\n<li><strong>Optimisation des performances de traitement<\/strong>R\u00e9duire la r\u00e9sistance au frottement lors des \u00e9tapes de traitement en aval. Am\u00e9liorer les processus de m\u00e9lange et de moulage, et ainsi accro\u00eetre l&#039;efficacit\u00e9 de la production.<\/li>\n\n\n\n<li><strong>Fournir des fonctionnalit\u00e9s<\/strong>Gr\u00e2ce \u00e0 des modificateurs et des proc\u00e9d\u00e9s sp\u00e9cialis\u00e9s, il est possible de conf\u00e9rer des propri\u00e9t\u00e9s suppl\u00e9mentaires telles que des propri\u00e9t\u00e9s antibact\u00e9riennes, ignifuges et de r\u00e9sistance aux acides, \u00e9largissant ainsi les sc\u00e9narios d&#039;application haut de gamme.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Indicateurs d&#039;\u00e9valuation de l&#039;effet de modification<\/h3>\n\n\n\n<p>Les principaux indicateurs d&#039;\u00e9valuation de la performance des modifications comprennent\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Indice d&#039;activation<\/strong>: Refl\u00e8te l&#039;hydrophobicit\u00e9 et la lipophilie. Une valeur plus \u00e9lev\u00e9e indique une meilleure modification. Les applications haut de gamme n\u00e9cessitent g\u00e9n\u00e9ralement une valeur \u2265 95%.<\/li>\n\n\n\n<li><strong>Dispersibilit\u00e9<\/strong>L&#039;\u00e9valuation repose sur la distribution granulom\u00e9trique et le degr\u00e9 d&#039;agglom\u00e9ration. Les produits de haute qualit\u00e9 doivent pr\u00e9senter une distribution granulom\u00e9trique \u00e9troite et \u00eatre exempts d&#039;agglom\u00e9rats visibles.<\/li>\n\n\n\n<li><strong>Compatibilit\u00e9<\/strong>: V\u00e9rifi\u00e9 par les propri\u00e9t\u00e9s m\u00e9caniques (par exemple, la r\u00e9sistance \u00e0 la traction, la r\u00e9sistance aux chocs) et la fluidit\u00e9 de traitement des composites en aval.<\/li>\n\n\n\n<li><strong>Fonctionnalit\u00e9<\/strong>Pour les produits sp\u00e9cialis\u00e9s, les indicateurs fonctionnels correspondants (par exemple, le taux antibact\u00e9rien, le niveau de r\u00e9sistance au feu) doivent \u00eatre respect\u00e9s.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">II. Proc\u00e9d\u00e9s de base et innovations technologiques en mati\u00e8re de modification de surface<\/h2>\n\n\n\n<p>Les proc\u00e9d\u00e9s de modification de surface se divisent principalement en trois cat\u00e9gories\u00a0: physiques, chimiques et m\u00e9canochimiques. Parmi eux, <strong>modification chimique<\/strong> est la m\u00e9thode dominante en raison de son effet stable et de sa large applicabilit\u00e9.<\/p>\n\n\n\n<p>Ces derni\u00e8res ann\u00e9es, gr\u00e2ce aux progr\u00e8s technologiques, les processus ont \u00e9volu\u00e9 vers <strong>perfectionnement des processus individuels<\/strong> et <strong>int\u00e9gration synergique des proc\u00e9d\u00e9s composites<\/strong>Des technologies intelligentes sont \u00e9galement mises en place pour parvenir \u00e0 un contr\u00f4le pr\u00e9cis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Modification chimique (proc\u00e9d\u00e9 principal)<\/h3>\n\n\n\n<p>La modification chimique implique des r\u00e9actions entre les modificateurs et la surface du carbonate de calcium, formant une couche de rev\u00eatement stable.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">(1) Proc\u00e9d\u00e9 de modification \u00e0 sec<\/h5>\n\n\n\n<p>Il s&#039;agit de la m\u00e9thode la plus couramment utilis\u00e9e, adapt\u00e9e au carbonate de calcium broy\u00e9 (GCC) et aux produits ultrafins.<br>Il se caract\u00e9rise par un processus simple, une faible consommation d&#039;\u00e9nergie et un co\u00fbt ma\u00eetrisable.<\/p>\n\n\n\n<p><strong>\u00c9tapes du processus\u00a0:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carbonate de calcium sec (humidit\u00e9 \u22641%, le s\u00e9chage peut \u00eatre omis)<\/li>\n\n\n\n<li>Introduire la poudre et le modificateur dos\u00e9 dans un m\u00e9langeur \u00e0 grande vitesse ou un m\u00e9langeur \u00e0 palettes horizontales.<\/li>\n\n\n\n<li>M\u00e9langer \u00e0 100\u2013120\u00b0C pendant 15\u201360 minutes<\/li>\n\n\n\n<li>Rev\u00eatement et d\u00e9charge complets<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">(2) Proc\u00e9d\u00e9 de modification par voie humide<\/h5>\n\n\n\n<p>Principalement utilis\u00e9 pour le carbonate de calcium pr\u00e9cipit\u00e9 (PCC) et le GCC broy\u00e9 par voie humide.<\/p>\n\n\n\n<p><strong>Avantages :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Meilleure uniformit\u00e9<\/li>\n\n\n\n<li>Dispersion plus compl\u00e8te en phase liquide<\/li>\n<\/ul>\n\n\n\n<p><strong>\u00c9tapes du processus\u00a0:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pr\u00e9parer la suspension<\/li>\n\n\n\n<li>Ajouter du dispersant<\/li>\n\n\n\n<li>Introduire le modificateur saponifi\u00e9<\/li>\n\n\n\n<li>R\u00e9agir \u00e0 50\u2013100 \u00b0C<\/li>\n\n\n\n<li>Filtrer et s\u00e9cher<\/li>\n<\/ul>\n\n\n\n<p>Apr\u00e8s modification, un film bicouche se forme \u00e0 la surface des particules. M\u00eame apr\u00e8s s\u00e9chage, les particules ne forment pas d&#039;agglom\u00e9rats durs et peuvent \u00eatre facilement redispers\u00e9es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Modification physique<\/h3>\n\n\n\n<p>La modification physique n&#039;implique pas de r\u00e9actions chimiques. Elle repose sur l&#039;adsorption ou le rev\u00eatement physique.<\/p>\n\n\n\n<p><strong>Avantages :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Processus simple<\/li>\n\n\n\n<li>Aucune \u00e9mission de polluants<\/li>\n<\/ul>\n\n\n\n<p>Exemples\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rev\u00eatement avec des polym\u00e8res ou des mat\u00e9riaux inorganiques<\/li>\n\n\n\n<li>Utilisation d&#039;un rev\u00eatement de sulfate de baryum pour am\u00e9liorer les propri\u00e9t\u00e9s du papier<\/li>\n\n\n\n<li>Rev\u00eatement en \u00e9mulsion polym\u00e8re pour le carbonate de calcium nanom\u00e9trique<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/machines\/three-roller-coating-machine\/\">Modification m\u00e9canochimique<\/a><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/ultrafine-powder-coating-machine.webp\" alt=\"machine de rev\u00eatement en poudre ultrafine\" class=\"wp-image-3849\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/ultrafine-powder-coating-machine.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/ultrafine-powder-coating-machine-300x200.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/ultrafine-powder-coating-machine-768x513.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/03\/ultrafine-powder-coating-machine-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Cette m\u00e9thode utilise des forces m\u00e9caniques importantes (broyage, p\u00e9trissage) pour activer la surface des particules.<\/p>\n\n\n\n<p><strong>Avantages :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Processus simple<\/li>\n\n\n\n<li>Faible co\u00fbt<\/li>\n<\/ul>\n\n\n\n<p>Exemple:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9poser du dioxyde de titane sur du GCC pour am\u00e9liorer l&#039;opacit\u00e9 tout en r\u00e9duisant les co\u00fbts<\/li>\n<\/ul>\n\n\n\n<p>Cependant, pour le carbonate de calcium nanom\u00e9trique, cette m\u00e9thode doit \u00eatre combin\u00e9e \u00e0 une modification chimique.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Modification composite (Orientation de l&#039;innovation)<\/h3>\n\n\n\n<p>Les proc\u00e9d\u00e9s isol\u00e9s ne peuvent r\u00e9pondre aux exigences les plus pointues. La modification composite constitue la principale voie d&#039;innovation.<\/p>\n\n\n\n<p>Exemples :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Combinaison d&#039;agents de couplage silane et titanate<\/li>\n\n\n\n<li>Int\u00e9gration des proc\u00e9d\u00e9s m\u00e9canochimiques et chimiques par voie humide<\/li>\n\n\n\n<li>Modification du m\u00e9lange-ma\u00eetre (m\u00e9lange et modification simultan\u00e9s)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">III. S\u00e9lection des modificateurs et correspondance des applications<\/h2>\n\n\n\n<p>Voici la traduction anglaise int\u00e9grale de votre contenu. Rien n&#039;a \u00e9t\u00e9 omis et les phrases longues ont \u00e9t\u00e9 coup\u00e9es pour plus de clart\u00e9 et de lisibilit\u00e9\u00a0:<\/p>\n\n\n\n<p>Les modificateurs sont essentiels \u00e0 la modification de surface du carbonate de calcium. Leurs types, dosages et m\u00e9thodes d&#039;application d\u00e9terminent directement l&#039;effet de la modification et sa compatibilit\u00e9 avec les applications en aval. Actuellement, les modificateurs couramment utilis\u00e9s dans l&#039;industrie se r\u00e9partissent en cinq grandes cat\u00e9gories. Chaque type poss\u00e8de des caract\u00e9ristiques et des applications sp\u00e9cifiques. Un choix pr\u00e9cis est donc indispensable, en fonction du type de carbonate de calcium, du proc\u00e9d\u00e9 de modification et des exigences des applications en aval.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Tensioactifs (modificateurs les plus couramment utilis\u00e9s)<\/h3>\n\n\n\n<p>Les mol\u00e9cules tensioactives contiennent \u00e0 la fois des groupements polaires hydrophiles et des groupements non polaires lipophiles. Elles peuvent recouvrir la surface des particules de carbonate de calcium par adsorption physique, adsorption chimique ou r\u00e9actions chimiques, formant ainsi un film hydrophobe. Ceci am\u00e9liore significativement la compatibilit\u00e9 et la dispersibilit\u00e9 dans les matrices organiques.<\/p>\n\n\n\n<p>Parmi eux, <strong>acide st\u00e9arique (et ses sels)<\/strong> Il s&#039;agit du tensioactif le plus utilis\u00e9. Peu co\u00fbteux, il offre des performances de modification stables et est largement employ\u00e9 dans les industries du plastique et du caoutchouc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Agents de couplage (modificateurs de base pour applications haut de gamme)<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"786\" height=\"530\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/04\/Coupling-Agents.webp\" alt=\"Agents de couplage\" class=\"wp-image-3865\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/04\/Coupling-Agents.webp 786w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/04\/Coupling-Agents-300x202.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/04\/Coupling-Agents-768x518.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2026\/04\/Coupling-Agents-18x12.webp 18w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<p>Les agents de couplage sont des modificateurs cl\u00e9s pour les applications de pointe du carbonate de calcium. Leur structure mol\u00e9culaire comporte des groupes fonctionnels \u00e0 leurs deux extr\u00e9mit\u00e9s, capables d&#039;interagir respectivement avec des mat\u00e9riaux inorganiques et organiques. Ceci leur permet de former des ponts mol\u00e9culaires entre le carbonate de calcium et les matrices polym\u00e8res, am\u00e9liorant ainsi consid\u00e9rablement la compatibilit\u00e9 et les propri\u00e9t\u00e9s m\u00e9caniques des composites.<\/p>\n\n\n\n<p>Les agents de couplage courants comprennent les agents de couplage \u00e0 base de titanate, d&#039;aluminate et, dans certains cas, de silane.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">(1) Agents de couplage titanates<\/h5>\n\n\n\n<p>Ces agents se pr\u00e9sentent g\u00e9n\u00e9ralement sous forme liquide et sont faciles \u00e0 disperser. Le dosage est typiquement de 0,51 \u00e0 3,01 Tp\u00b3 de la masse de carbonate de calcium. La temp\u00e9rature de modification doit \u00eatre maintenue en dessous du point d&#039;\u00e9clair de l&#039;agent de couplage, g\u00e9n\u00e9ralement entre 100 et 120 \u00b0C.<\/p>\n\n\n\n<p>Lors de leur utilisation, ils doivent \u00eatre dilu\u00e9s avec des solvants inertes tels que la paraffine liquide ou l&#039;\u00e9thanol anhydre. Ils sont ensuite ajout\u00e9s au dispositif de m\u00e9lange par pulv\u00e9risation ou par goutte \u00e0 goutte afin d&#039;assurer un m\u00e9lange homog\u00e8ne avec les particules de carbonate de calcium.<\/p>\n\n\n\n<p>Le carbonate de calcium modifi\u00e9 par des agents de couplage titanates pr\u00e9sente une excellente compatibilit\u00e9 avec les mol\u00e9cules de polym\u00e8res. Il am\u00e9liore significativement la r\u00e9sistance aux chocs et la r\u00e9sistance \u00e0 la traction des composites thermoplastiques, surpassant ainsi la modification par l&#039;acide st\u00e9arique. Il convient aux plastiques, adh\u00e9sifs et rev\u00eatements haut de gamme. Cependant, les agents de couplage titanates ont une couleur relativement fonc\u00e9e et ne sont pas adapt\u00e9s aux produits exigeant une blancheur \u00e9lev\u00e9e.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">(2) Agents de couplage aluminates<\/h5>\n\n\n\n<p>Les agents de couplage aluminates sont moins chers que les titanates. De couleur blanche ou jaune clair, ils conviennent aux produits blancs. Ils sont largement utilis\u00e9s dans la transformation des plastiques PVC, PP et PE, ainsi que dans la pr\u00e9paration de m\u00e9langes-ma\u00eetres de charges.<\/p>\n\n\n\n<p>Le carbonate de calcium modifi\u00e9 par des agents de couplage aluminates permet de r\u00e9duire significativement la viscosit\u00e9 des syst\u00e8mes carbonate de calcium-paraffine liquide. Il am\u00e9liore la dispersibilit\u00e9 dans les milieux organiques et renforce la r\u00e9sistance aux chocs et la t\u00e9nacit\u00e9 des m\u00e9langes de polypropyl\u00e8ne. Cependant, ces agents se pr\u00e9sentent sous forme solide et cireuse, n\u00e9cessitant un temps de fusion et de dispersion suffisant. Par cons\u00e9quent, le proc\u00e9d\u00e9 de m\u00e9lange doit \u00eatre optimis\u00e9 afin de garantir une modification uniforme.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">(3) Agents de couplage silane<\/h5>\n\n\n\n<p>Les agents de couplage silane sont relativement co\u00fbteux et peuvent affecter la fluidit\u00e9 des plastiques charg\u00e9s lors de leur mise en \u0153uvre. Cependant, ils pr\u00e9sentent des avantages uniques dans certaines applications haut de gamme.<\/p>\n\n\n\n<p>Par exemple, l&#039;association d&#039;un agent de couplage silane (tel que le KH-550) \u00e0 un agent de couplage titanate, combin\u00e9e \u00e0 un traitement ultrasonique, permet d&#039;am\u00e9liorer significativement les performances du carbonate de calcium. Utilis\u00e9 dans les mati\u00e8res plastiques, le carbonate de calcium l\u00e9ger modifi\u00e9 par silane augmente la r\u00e9sistance \u00e0 la traction et le module de flexion de 20% \u00e0 30%, tout en am\u00e9liorant la fluidit\u00e9 de mise en \u0153uvre. Il convient aux applications haut de gamme telles que les pi\u00e8ces int\u00e9rieures automobiles et les bo\u00eetiers d&#039;appareils \u00e9lectrom\u00e9nagers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Modificateurs de polym\u00e8res (\u00e9l\u00e9ment central de la modification fonctionnelle)<\/h3>\n\n\n\n<p>Les modificateurs de polym\u00e8res comprennent des oligom\u00e8res, des polym\u00e8res \u00e0 haut poids mol\u00e9culaire et des polym\u00e8res hydrosolubles tels que le polym\u00e9thacrylate de m\u00e9thyle (PMMA), le poly\u00e9thyl\u00e8ne glycol (PEG) et l&#039;alcool polyvinylique (PVA).<\/p>\n\n\n\n<p>Elles forment des couches d&#039;adsorption physique ou chimique \u00e0 la surface des particules de carbonate de calcium. Ceci emp\u00eache efficacement l&#039;agglom\u00e9ration, am\u00e9liore la dispersibilit\u00e9 et conf\u00e8re des propri\u00e9t\u00e9s fonctionnelles suppl\u00e9mentaires.<\/p>\n\n\n\n<p>Il existe deux principales m\u00e9thodes de modification\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tout d&#039;abord, adsorber les monom\u00e8res polym\u00e8res sur la surface du carbonate de calcium, puis initier la polym\u00e9risation pour former une couche de rev\u00eatement.<\/li>\n\n\n\n<li>Deuxi\u00e8mement, dissoudre le polym\u00e8re dans un solvant appropri\u00e9, m\u00e9langer avec du carbonate de calcium et \u00e9liminer le solvant pour former un film.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Modificateurs inorganiques (modificateurs auxiliaires)<\/h3>\n\n\n\n<p>Les modificateurs inorganiques comprennent l&#039;hexam\u00e9taphosphate de sodium, les phosphates condens\u00e9s, l&#039;aluminate de sodium et le silicate de sodium. Ils forment des rev\u00eatements hydrophobes \u00e0 la surface du carbonate de calcium, augmentent le potentiel de surface absolu et renforcent la r\u00e9pulsion \u00e9lectrostatique dans la double couche \u00e9lectrique.<\/p>\n\n\n\n<p>Cela am\u00e9liore la dispersibilit\u00e9 et renforce la r\u00e9sistance aux acides.<\/p>\n\n\n\n<p>Par exemple, une entreprise japonaise utilise des phosphates condens\u00e9s (comme le m\u00e9taphosphate et le pyrophosphate) pour modifier le carbonate de calcium. Le produit obtenu pr\u00e9sente un pH de surface de 5,0 \u00e0 8,0, soit 1,0 \u00e0 5,0 points inf\u00e9rieur \u00e0 celui du carbonate de calcium non trait\u00e9. Il pr\u00e9sente une excellente solubilit\u00e9 en milieu faiblement acide et peut \u00eatre largement utilis\u00e9 dans l&#039;alimentation, les dentifrices et les rev\u00eatements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Modificateurs d&#039;aide au broyage (modification simultan\u00e9e pendant le broyage)<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/1-coating-machine.webp\" alt=\"1 machine d&#039;enduction\" class=\"wp-image-3553\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/1-coating-machine.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/1-coating-machine-300x300.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/1-coating-machine-150x150.webp 150w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/1-coating-machine-768x768.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/1-coating-machine-12x12.webp 12w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Des modificateurs d&#039;adjuvants de broyage sont utilis\u00e9s lors du broyage du carbonate de calcium. Ils contribuent \u00e0 r\u00e9soudre des probl\u00e8mes tels que l&#039;agglom\u00e9ration des particules et une distribution granulom\u00e9trique trop large. Parall\u00e8lement, ils permettent une modification simultan\u00e9e, am\u00e9liorant ainsi la fluidit\u00e9 et la dispersibilit\u00e9 de la poudre.<\/p>\n\n\n\n<p>Leur fonction principale est de s&#039;adsorber sur les d\u00e9fauts de surface des particules de carbonate de calcium, formant ainsi une interface stable. Ceci r\u00e9duit la concentration de d\u00e9fauts, am\u00e9liore la sph\u00e9ricit\u00e9 des particules et optimise l&#039;efficacit\u00e9 du broyage et les performances de classification.<\/p>\n\n\n\n<p>Les adjuvants de broyage se divisent en\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Types polaires<\/strong>: tri\u00e9thanolamine, \u00e9thyl\u00e8ne glycol, propyl\u00e8ne glycol<\/li>\n\n\n\n<li><strong>Types non polaires<\/strong>: graphite, coke, terpin\u00e9ol<\/li>\n<\/ul>\n\n\n\n<p>Des adjuvants de broyage composites organiques-inorganiques peuvent \u00e9galement \u00eatre utilis\u00e9s.<\/p>\n\n\n\n<p>Il convient de noter que les adjuvants de broyage \u00e0 cha\u00eene courte (comme l&#039;\u00e9thyl\u00e8ne glycol) ont tendance \u00e0 se volatiliser \u00e0 haute temp\u00e9rature. Cela peut r\u00e9duire l&#039;efficacit\u00e9 du broyage et engendrer une pollution environnementale. Un choix judicieux est donc indispensable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">IV. Applications industrielles et solutions aux probl\u00e8mes courants<\/h2>\n\n\n\n<p>La technologie de modification de surface par le carbonate de calcium est largement utilis\u00e9e dans les secteurs des plastiques, du caoutchouc, des rev\u00eatements, des encres, de l&#039;agroalimentaire et de la pharmacie. Les exigences relatives aux modificateurs, aux proc\u00e9d\u00e9s et aux param\u00e8tres varient consid\u00e9rablement d&#039;un secteur \u00e0 l&#039;autre. Par ailleurs, des probl\u00e8mes communs apparaissent lors des applications pratiques et n\u00e9cessitent une optimisation technique continue.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Applications industrielles<\/h3>\n\n\n\n<h5 class=\"wp-block-heading\">(1) Industrie des plastiques<\/h5>\n\n\n\n<p>Le carbonate de calcium modifi\u00e9 est la charge inorganique la plus utilis\u00e9e dans les plastiques. Les exigences varient selon les plastiques.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pour le PVC, on privil\u00e9gie les agents de couplage \u00e0 base d&#039;acide st\u00e9arique (sels) ou d&#039;aluminate. Ils assurent \u00e0 la fois le remplissage et la lubrification, ce qui permet de r\u00e9duire les co\u00fbts.<\/li>\n\n\n\n<li>PP et PE\u00a0: les agents de couplage titanate ou silane sont pr\u00e9f\u00e9r\u00e9s pour am\u00e9liorer les propri\u00e9t\u00e9s m\u00e9caniques.<\/li>\n\n\n\n<li>Les plastiques biod\u00e9gradables n\u00e9cessitent des modificateurs respectueux de l&#039;environnement qui n&#039;affectent pas leur d\u00e9gradabilit\u00e9, tout en am\u00e9liorant leur rigidit\u00e9 et leur aptitude \u00e0 la transformation. Les modificateurs polym\u00e8res et inorganiques sont couramment utilis\u00e9s en combinaison.<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">(2) Industrie du caoutchouc<\/h5>\n\n\n\n<p>On utilise principalement du carbonate de calcium actif ultrafin. Il est modifi\u00e9 avec de l&#039;acide st\u00e9arique (sels) ou des agents de couplage pour am\u00e9liorer sa compatibilit\u00e9 et sa dispersibilit\u00e9, ce qui renforce sa r\u00e9sistance \u00e0 la traction, \u00e0 la d\u00e9chirure et \u00e0 l&#039;usure.<\/p>\n\n\n\n<p>Par exemple, l&#039;utilisation de carbonate de calcium ultrafin modifi\u00e9 au titanate dans les gommes de coussin de pneus et les chambres \u00e0 air permet d&#039;am\u00e9liorer consid\u00e9rablement la r\u00e9sistance \u00e0 l&#039;usure et la dur\u00e9e de vie. Les dispositifs m\u00e9dicaux en caoutchouc n\u00e9cessitent un carbonate de calcium modifi\u00e9 au st\u00e9arate de haute puret\u00e9 et exempt d&#039;impuret\u00e9s pour garantir la s\u00e9curit\u00e9.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">(3) Produits chimiques et pharmaceutiques d&#039;usage courant<\/h5>\n\n\n\n<p>Le carbonate de calcium de qualit\u00e9 alimentaire et pharmaceutique doit utiliser des mati\u00e8res premi\u00e8res de haute puret\u00e9 et des modificateurs non toxiques et respectueux de l&#039;environnement tels que l&#039;acide st\u00e9arique de qualit\u00e9 alimentaire et le poly\u00e9thyl\u00e8ne glycol.<\/p>\n\n\n\n<p>Apr\u00e8s modification, les produits doivent \u00eatre conformes aux normes industrielles et garantir l&#039;absence de contamination par des m\u00e9taux lourds.<\/p>\n\n\n\n<p>Par exemple, le carbonate de calcium de qualit\u00e9 dentifrice, modifi\u00e9 \u00e0 l&#039;acide st\u00e9arique, offre un nettoyage en douceur et pr\u00e9vient l&#039;abrasion de l&#039;\u00e9mail. Le carbonate de calcium pharmaceutique, modifi\u00e9 \u00e0 l&#039;aide de polym\u00e8res, favorise sa dissolution et son absorption par l&#039;organisme, optimisant ainsi l&#039;efficacit\u00e9 de la suppl\u00e9mentation en calcium.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">(4) Rev\u00eatements et encres<\/h5>\n\n\n\n<p>Il est n\u00e9cessaire d&#039;utiliser un carbonate de calcium modifi\u00e9, hautement blanc et dispersible. Des agents de couplage ou des modificateurs de polym\u00e8res permettent d&#039;am\u00e9liorer la compatibilit\u00e9 avec les syst\u00e8mes de r\u00e9sine, d&#039;accro\u00eetre l&#039;opacit\u00e9, la r\u00e9sistance \u00e0 l&#039;usure et aux intemp\u00e9ries, et d&#039;optimiser le nivellement tout en r\u00e9duisant les co\u00fbts de production.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Probl\u00e8mes courants et solutions<\/h3>\n\n\n\n<h5 class=\"wp-block-heading\">(1) Agglom\u00e9ration<\/h5>\n\n\n\n<p>C&#039;est le probl\u00e8me le plus fr\u00e9quent. Il est principalement d\u00fb \u00e0 un dosage insuffisant de modificateur, \u00e0 une temp\u00e9rature inad\u00e9quate ou \u00e0 une dispersion insuffisante.<\/p>\n\n\n\n<p><strong>Solutions :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Optimiser le dosage du modificateur en fonction de la taille des particules et de la surface sp\u00e9cifique<\/li>\n\n\n\n<li>Contr\u00f4lez strictement la temp\u00e9rature et le temps.<\/li>\n\n\n\n<li>Ajouter des dispersants ou utiliser des proc\u00e9d\u00e9s de modification composites<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">(2) Mauvaise compatibilit\u00e9<\/h5>\n\n\n\n<p>Cela entra\u00eene une diminution des propri\u00e9t\u00e9s m\u00e9caniques, une s\u00e9paration de phases ou des fissures.<\/p>\n\n\n\n<p><strong>Solutions :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u00e9lectionnez les modificateurs appropri\u00e9s en fonction du type de polym\u00e8re<\/li>\n\n\n\n<li>Optimiser les conditions de processus<\/li>\n\n\n\n<li>Utiliser des agents de couplage composites<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">(3) Fonctionnalit\u00e9s insuffisantes<\/h5>\n\n\n\n<p>Se rencontre dans des produits sp\u00e9cialis\u00e9s tels que les mat\u00e9riaux antibact\u00e9riens ou ignifuges.<\/p>\n\n\n\n<p><strong>Solutions :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Utilisez des modificateurs fonctionnels d\u00e9di\u00e9s<\/li>\n\n\n\n<li>Optimiser le dosage et la dispersion<\/li>\n\n\n\n<li>Appliquer une modification composite<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">(4) Co\u00fbt de production \u00e9lev\u00e9<\/h5>\n\n\n\n<p>Caus\u00e9 par des modificateurs co\u00fbteux ou une forte consommation d&#039;\u00e9nergie.<\/p>\n\n\n\n<p><strong>Solutions :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Choisir des alternatives \u00e9conomiques (par exemple, l&#039;aluminate au lieu du titanate).<\/li>\n\n\n\n<li>Utiliser des proc\u00e9d\u00e9s \u00e0 sec plut\u00f4t que des proc\u00e9d\u00e9s humides.<\/li>\n\n\n\n<li>Mettre en \u0153uvre la fabrication intelligente<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/Calcium-Carbonate-Pin-Mill-Coating-Machine.webp\" alt=\"Machine de rev\u00eatement de moulin \u00e0 broches de carbonate de calcium\" class=\"wp-image-2615\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/Calcium-Carbonate-Pin-Mill-Coating-Machine.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/Calcium-Carbonate-Pin-Mill-Coating-Machine-300x225.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/Calcium-Carbonate-Pin-Mill-Coating-Machine-768x576.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Machine de rev\u00eatement de moulin \u00e0 broches de carbonate de calcium<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">V. Tendances de d\u00e9veloppement et perspectives de l&#039;industrie<\/h2>\n\n\n\n<p>Avec l\u2019\u00e9volution des industries en aval vers des solutions haut de gamme, fonctionnelles et respectueuses de l\u2019environnement, la technologie de modification de surface du carbonate de calcium progresse \u00e9galement vers\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Raffinement<\/strong><\/li>\n\n\n\n<li><strong>Sp\u00e9cialisation<\/strong><\/li>\n\n\n\n<li><strong>Traitement \u00e9cologique<\/strong><\/li>\n\n\n\n<li><strong>fabrication intelligente<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Dans le m\u00eame temps, les innovations en mati\u00e8re de modificateurs et de proc\u00e9d\u00e9s permettront d&#039;\u00e9largir encore le champ d&#039;application du carbonate de calcium et d&#039;accro\u00eetre consid\u00e9rablement sa valeur industrielle.<\/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=\"602\" height=\"602\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang.webp\" alt=\"Jason Wang\" class=\"wp-image-3718\" style=\"width:150px;height:150px\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang.webp 602w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang-300x300.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang-150x150.webp 150w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang-12x12.webp 12w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><\/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>\u00ab Merci de votre lecture. J\u2019esp\u00e8re que cet article vous sera utile. N\u2019h\u00e9sitez pas \u00e0 laisser un commentaire ci-dessous. Pour toute question, vous pouvez \u00e9galement contacter le service client en ligne de Zelda. \u00bb<\/p>\n<cite>                                                                                                                                                                          \u2014 Publi\u00e9 par <a href=\"https:\/\/www.linkedin.com\/company\/76603359\/admin\/dashboard\/\">Jason Wang<\/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=\"\/fr\/wp-json\/wp\/v2\/posts\/3864#wpcf7-f16-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/fr\/wp-json\/wp\/v2\/posts\/3864#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=\"Votre nom*\" 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=\"Votre 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=\"Votre 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=\"Votre entreprise\" 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=\"Votre message\" 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=\"Soumettre\" \/>\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=\"fr\"\/><\/form>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Le carbonate de calcium est la charge min\u00e9rale inorganique la plus utilis\u00e9e et la plus abondante. Cependant, ses caract\u00e9ristiques de surface naturellement hydrophiles et ol\u00e9ophobes entra\u00eenent une faible compatibilit\u00e9 avec les mat\u00e9riaux polym\u00e8res organiques tels que les plastiques, le caoutchouc et les r\u00e9sines. Ajout\u00e9 directement, il a tendance \u00e0 s&#039;agglom\u00e9rer, ce qui affecte consid\u00e9rablement les performances de transformation et les propri\u00e9t\u00e9s m\u00e9caniques des produits d\u00e9riv\u00e9s. Modification de surface [\u2026]<\/p>","protected":false},"author":1,"featured_media":2615,"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 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