{"id":2728,"date":"2026-01-30T07:16:18","date_gmt":"2026-01-30T07:16:18","guid":{"rendered":"https:\/\/www.seedchemever.com\/?p=2728"},"modified":"2026-01-30T07:20:37","modified_gmt":"2026-01-30T07:20:37","slug":"perche-il-team-seed-sta-sviluppando-agenti-di-accoppiamento-coadiuvanti-di-macinazione-della-polvere-di-calcio-e-disperdenti","status":"publish","type":"post","link":"https:\/\/www.seedchemever.com\/it\/why-is-the-seed-team-developing-coupling-agents-calcium-powder-grinding-aids-and-dispersants\/","title":{"rendered":"Perch\u00e9 il team SEED sta sviluppando agenti di accoppiamento, coadiuvanti di macinazione della polvere di calcio e disperdenti"},"content":{"rendered":"<p class=\"wp-block-paragraph\">There&#8217;s only one reason: foreign companies operate factories in China, grinding powder from Chinese ore and selling it to Chinese consumers for thousands of yuan per ton, cash only. They can be number one in the world in this regard. Meanwhile, Chinese companies sell it for a few hundred yuan per ton, fighting tooth and nail for a mere 10 yuan profit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The core technologies involved are particle size control and surface modification. Therefore, SEED wants to contribute its modest efforts to China&#8217;s powder manufacturing industry.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" data-src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/01\/why-is-the-seed-team-developing-coupling-agents.jpg\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"\" class=\"wp-image-2729 lazyload\"\/><noscript><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/01\/why-is-the-seed-team-developing-coupling-agents.jpg\" alt=\"\" class=\"wp-image-2729\" srcset=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/01\/why-is-the-seed-team-developing-coupling-agents.jpg 800w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/01\/why-is-the-seed-team-developing-coupling-agents-300x225.jpg 300w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/01\/why-is-the-seed-team-developing-coupling-agents-768x576.jpg 768w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/01\/why-is-the-seed-team-developing-coupling-agents-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Coupling Agents: The &#8220;Bridging Effect&#8221; Mechanism<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The core mechanism of action of SEED coupling agent is the &#8220;bridging effect&#8221; \u2014 one end of the coupling agent molecule binds to the hydroxyl groups (-OH) on the surface of calcium carbonate powder, while the other end is compatible with organic polymer matrices (e.g., plastics, rubbers, coatings). This addresses the interfacial compatibility issue caused by the hydrophilicity of calcium carbonate powder and the hydrophobicity of organic matrices, and it can be broken down into two specific steps:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Legame chimico interfacciale<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">I gruppi idrofili (ad esempio, -Si-OR nei silani, -Ti-OR nei titanati) dell'agente di accoppiamento (i tipi di silano e titanato sono comunemente usati) subiscono reazioni di idrolisi e condensazione con l'acqua o i gruppi idrossilici adsorbiti sulla superficie della polvere di carbonato di calcio, formando legami chimici stabili (ad esempio, legami Si-O-Ca) che ancorano saldamente l'agente alla superficie della polvere.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Miglioramento della compatibilit\u00e0 della matrice<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">I gruppi idrofobici (ad esempio, gruppi alchilici, gruppi arilici, doppi legami insaturi) dell'agente di accoppiamento si estendono nella matrice organica e si combinano con le molecole della matrice attraverso un intreccio fisico o reazioni chimiche, eliminando gli spazi interfacciali tra la polvere di carbonato di calcio e la matrice.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gli effetti finali includono il miglioramento delle propriet\u00e0 meccaniche (resistenza alla trazione, resistenza all'impatto) del materiale composito, la riduzione della viscosit\u00e0 del sistema, il miglioramento della fluidit\u00e0 di lavorazione, nonch\u00e9 l'ottimizzazione della dispersione della polvere di carbonato di calcio nella matrice e la riduzione dell'agglomerazione.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Potresti essere interessato a: <a href=\"https:\/\/www.seedchemever.com\/it\/collaborazioni-di-ricerca-di-seed\/\">Collaborazioni di ricerca dell'SEED<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Agenti macinanti e disperdenti: Azione sinergica<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Il meccanismo d'azione principale dell'agente macinante e disperdente SEED \u00e8 l'effetto sinergico di adsorbimento-lubrificazione-ostacolo sterico. Riducendo le forze tra le particelle di polvere e tra le particelle di polvere e le attrezzature, ottiene il duplice effetto di aiuto alla macinazione e di dispersione, che pu\u00f2 essere suddiviso in tre fasi specifiche:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Adsorbimento per la riduzione dell'energia superficiale<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le molecole disperdenti (acidi organici a piccole molecole, polifosfati e polimeri ad alta molecola sono comunemente utilizzati) si adsorbono sulla superficie delle particelle di carbonato di calcio in polvere attraverso gruppi polari (gruppi carbossilici, gruppi idrossilici, gruppi fosfatici), sostituendo l'aria e l'acqua adsorbite sulla superficie delle particelle, abbassando cos\u00ec l'energia superficiale delle particelle e la loro tendenza ad agglomerarsi.<br><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Lubrificazione per ridurre l'attrito<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">I gruppi non polari a catena lunga del disperdente si estendono verso l'esterno per formare un film lubrificante sulla superficie delle particelle, che riduce l'attrito e l'adesione tra le particelle di carbonato di calcio in polvere, nonch\u00e9 tra le particelle e la parete interna del mulino\/mezzi di macinazione durante il processo di macinazione. Ci\u00f2 facilita la macinazione delle particelle in dimensioni pi\u00f9 fini e riduce il consumo di energia di macinazione.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ostacoli sterici per l'antiagglomerazione<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le catene molecolari di disperdente adsorbite sulla superficie delle particelle di carbonato di calcio in polvere macinate si respingono a vicenda, formando una barriera di ostacoli sterici che impedisce alle particelle fini di riagglomerarsi a causa delle forze di van der Waals. In questo modo si mantiene la stabilit\u00e0 della dispersione della polvere e si ottiene un prodotto di carbonato di calcio con particelle pi\u00f9 fini e una distribuzione granulometrica pi\u00f9 uniforme.<\/p>","protected":false},"excerpt":{"rendered":"<p>There&#8217;s only one reason: foreign companies operate factories in China, grinding powder from Chinese ore and selling it to Chinese [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2729,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","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":"default","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":""}},"_themeisle_gutenberg_block_has_review":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[1],"tags":[],"class_list":["post-2728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why is the SEED team developing coupling agents, calcium powder grinding aids and dispersants - SEED<\/title>\n<meta name=\"description\" content=\"Chinese companies sell it for a few hundred yuan per ton, fighting tooth and nail for a mere 10 yuan profit. 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