{"id":3260,"date":"2020-09-21T10:12:11","date_gmt":"2020-09-21T10:12:11","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=3260"},"modified":"2026-04-28T10:41:46","modified_gmt":"2026-04-28T10:41:46","slug":"what-is-shellac-flakes","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/what-is-shellac-flakes\/","title":{"rendered":"Qu'est-ce que la gomme-laque en flocons\uff1f ?"},"content":{"rendered":"<h4 class=\"wp-block-heading\"><a rel=\"noreferrer noopener\" href=\"https:\/\/longchangchemical.com\/fr\/product\/shellac-flakes-cas-9000-59-3\/\" target=\"_blank\"><strong>Copeaux de gomme-laque<\/strong><\/a> est un sous-produit de la for\u00eat et une mati\u00e8re premi\u00e8re industrielle importante ayant une grande valeur \u00e9conomique. De nombreuses personnes consid\u00e8rent la translitt\u00e9ration de la gomme-laque (LAC) comme un mot vague repr\u00e9sentant un vernis ou une gomme, et pensent qu'il s'agit d'un acronyme ou d'un nom de marque. En fait, le mot (LAC) vient du sanskrit LAKEH, qui signifie cent mille, probablement parce que la r\u00e9sine est fabriqu\u00e9e par la s\u00e9cr\u00e9tion laborieuse d'innombrables insectes - les insectes de la gomme-laque. Une livre de gomme-laque doit \u00eatre recueillie \u00e0 partir des s\u00e9cr\u00e9tions de 150 000 insectes gomme-laque. Les r\u00e9sines g\u00e9n\u00e9rales sont essentiellement d'origine v\u00e9g\u00e9tale, la gomme-laque est la seule r\u00e9sine animale connue. Il s'agit de la s\u00e9cr\u00e9tion de la gomme-laque parasite de certaines plantes, principalement compos\u00e9e de r\u00e9sine de gomme-laque, de cire de gomme-laque, de pigment de gomme-laque, et contenant \u00e9galement une petite quantit\u00e9 d'impuret\u00e9s, telles que du sucre, du sel, des prot\u00e9ines, des cadavres d'insectes et des copeaux de bois. L'utilisation de la gomme-laque a une longue histoire. La gomme-laque est d'abord utilis\u00e9e comme mati\u00e8re m\u00e9dicinale, puis comme teinture. Zhang Bo et Su Gong ont tous deux fait \u00e9tat de son utilisation comme colorant. Le \"Wu Lu\" indique que la gomme-laque peut \u00eatre utilis\u00e9e pour teindre les flocons (c'est-\u00e0-dire les tissus de soie) ; Su Gong dit qu'elle peut \u00eatre utilis\u00e9e pour teindre le cuir et le baotian. Le \"Book of Sketches\" (1061) de Su Song dit que les prescriptions m\u00e9dicales sont rarement utilis\u00e9es aujourd'hui, mais qu'elles sont n\u00e9cessaires aux teinturiers. Cela montre que la gomme-laque \u00e9tait utilis\u00e9e comme teinture sous la dynastie Song, ce qui a d\u00e9pass\u00e9 l'usage m\u00e9dicinal. Il y a environ deux mille ans, la gomme-laque a \u00e9t\u00e9 utilis\u00e9e pour coller les outils agricoles et pour servir d'agent de conservation. <a href=\"https:\/\/longchangchemical.com\/fr\/product-category\/pharmaceutical-intermediates\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Produits pharmaceutiques interm\u00e9diaires<\/strong><\/a>Le pigment de gomme-laque soluble dans l'eau est principalement utilis\u00e9 comme colorant \u00e9carlate et comme produit cosm\u00e9tique. \u00c0 l'\u00e9poque, la transformation de la gomme-laque visait presque \u00e0 obtenir ce colorant.<\/h4>\n\n<!-- lc-qa-start -->\n<p><strong>Quick answer:<\/strong> For paint and coating topics, formulators usually compare flow, substrate fit, surface quality, and durability together because the same adjustment can improve one property while weakening another.<\/p>\n<!-- lc-qa-end -->\n\n\n\n\n\n\n<h4 class=\"wp-block-heading\">La gomme-laque utilis\u00e9e dans l'ancien pays a peut-\u00eatre \u00e9t\u00e9 import\u00e9e de l'\u00e9tranger. Comme l'indique le \"Wu Lu\", l'origine de la gomme-laque est Jiuzhen Yifengguo, qui est aujourd'hui la province de Thanh Hoa, dans le centre du Vi\u00eat Nam. Les origines mentionn\u00e9es dans le \"Youyang Miscellany\" sont Zhenla, la Perse et le Kunlun. Dans les derni\u00e8res ann\u00e9es de la dynastie Tang, Li Chen a cit\u00e9 le \"Guangzhou Zhi\" de Pei Yuan dans son \"Haiyao Bencao\" pour souligner qu'il produisait le Hainan ; Su Song a d\u00e9clar\u00e9 que Jiaozhou \u00e9tait \u00e9galement l'une des r\u00e9gions productrices selon la \"G\u00e9ographie de Jiaozhou\" ; Li Shizhen a d\u00e9clar\u00e9 qu'il produisait le Nanfan. Bien qu'il soit mentionn\u00e9 que notre pays produit \u00e9galement de la gomme-laque, celle-ci peut \u00eatre import\u00e9e de l'\u00e9tranger en raison de l'inconv\u00e9nient du transport terrestre et de la commodit\u00e9 du transport maritime. Les \"Notes de voyage de Xu Xiake\" (Xu Hongzu, 1650) ont \u00e9t\u00e9 les premi\u00e8res \u00e0 pr\u00e9ciser que la province du Yunnan est la zone de production de la laque de mon pays, et que la province du Yunnan a \u00e9t\u00e9 la principale zone de production de la laque de mon pays. La gomme-laque produite dans la province du Yunnan est export\u00e9e \u00e0 l'\u00e9tranger \u00e0 bas prix en tant que mati\u00e8re premi\u00e8re et repr\u00e9sente un montant consid\u00e9rable sur le march\u00e9 international. \u00c0 la fin du XIXe si\u00e8cle, les colorants naturels de la gomme-laque ont chut\u00e9 sur le march\u00e9 international en raison de l'invention des colorants synth\u00e9tiques \u00e0 base d'aniline.<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">En raison de l'invasion des temps modernes, la production de gomme-laque dans notre pays a progressivement stagn\u00e9 vers 1930, et la production a \u00e9t\u00e9 compl\u00e8tement arr\u00eat\u00e9e en 1945, et la production de caoutchouc de semence a \u00e9t\u00e9 presque r\u00e9duite \u00e0 n\u00e9ant. Apr\u00e8s la lib\u00e9ration de l'ensemble du pays, la production de gomme-laque a progressivement repris apr\u00e8s un travail acharn\u00e9. De nos jours, les gens ont remarqu\u00e9 la r\u00e9sine de gomme-laque \u00e0 temps et ont d\u00e9couvert qu'elle avait de nombreuses utilisations. Elle est utilis\u00e9e dans les vernis et les agents de polissage. Elle est lisse et belle, imperm\u00e9able, r\u00e9sistante \u00e0 l'humidit\u00e9, \u00e0 l'huile et aux acides, et poss\u00e8de de bonnes propri\u00e9t\u00e9s d'isolation. Elle a \u00e9t\u00e9 utilis\u00e9e dans les d\u00e9buts de l'industrie \u00e9lectrique ; pendant la Seconde Guerre mondiale Apr\u00e8s la guerre, les produits \u00e0 base de r\u00e9sine de gomme-laque ont \u00e9t\u00e9 largement utilis\u00e9s dans l'industrie militaire comme agents de rev\u00eatement, adh\u00e9sifs et mat\u00e9riaux d'isolation pour les machines et les \u00e9quipements. Le magn\u00e9sium est utilis\u00e9 comme agent bloquant dans la poudre \u00e0 canon utilis\u00e9e dans les fus\u00e9es. Le magn\u00e9sium, principal composant de la bombe de signalisation, doit \u00eatre recouvert d'une couche de vernis \u00e0 la gomme-laque pendant le stockage pour \u00e9viter l'oxydation. En outre, l'acide papav\u00e9rique, l'un des principaux composants de la r\u00e9sine de gomme-laque, est \u00e9galement l'une des mati\u00e8res premi\u00e8res utilis\u00e9es pour la fabrication de verre pare-balles et d'\u00e9quipements anti-ultraviolets, anti-radiations et autres \u00e9quipements militaires. C'est pourquoi de nombreux pays ont class\u00e9 la gomme-laque parmi les mati\u00e8res strat\u00e9giques militaires. Selon les statistiques, la gomme-laque a \u00e9t\u00e9 utilis\u00e9e dans plus de 200 industries telles que l'arm\u00e9e, l'\u00e9lectricit\u00e9, la peinture, l'encre, les machines, le caoutchouc, les plastiques, le tannage, la papeterie, la m\u00e9decine, l'alimentation, etc. Elle est largement utilis\u00e9e dans les vernis volatils, les agents de polissage, les adh\u00e9sifs et l'isolation. Mat\u00e9riaux et mati\u00e8res premi\u00e8res pour les films thermoplastiques. Les zones de production de la gomme-laque sont principalement concentr\u00e9es dans les r\u00e9gions suivantes : 70\u00b0-120\u00b0 de longitude est, 8\u00b0-32\u00b0 de latitude nord, en particulier 19\u00b0-26\u00b0 de latitude nord. Les pays producteurs de gomme-laque dans le monde, \u00e0 l'exception de la Chine, sont principalement le Vi\u00eat Nam, la Birmanie, le Laos, la Tha\u00eflande et l'Inde en Asie du Sud-Est et en Asie du Sud.<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Contactez-nous d\u00e8s maintenant !<\/strong><\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Nous acceptons les services personnalis\u00e9s et nous vous contacterons g\u00e9n\u00e9ralement dans les 24 heures. Vous pouvez \u00e9galement m'envoyer un courriel \u00e0 l'adresse info@longchangchemical.com pendant les heures de travail (de 8h30 \u00e0 18h00 UTC+8 du lundi au samedi) ou utiliser le chat en direct du site web pour obtenir une r\u00e9ponse rapide.<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Cet article a \u00e9t\u00e9 r\u00e9dig\u00e9 par Longchang Chemical R&amp;D Department. Si vous souhaitez le copier ou le r\u00e9imprimer, veuillez en indiquer la source.<\/h4>\n\n\n<!-- lc-commercial-start -->\n<h2>A practical checklist for coating formulation decisions<\/h2>\n<p>In conventional coating work, technical buyers usually move fastest when they define the film-performance target first and then review rheology, substrate compatibility, additives, and long-term durability as one system instead of isolated tweaks.<\/p>\n<ul>\n<li><strong>Start from the application scenario:<\/strong> furniture, powder coating, industrial paint, and waterborne systems often reward different formulation priorities.<\/li>\n<li><strong>Check surface quality and process stability together:<\/strong> leveling, wetting, foam control, and drying often interact strongly.<\/li>\n<li><strong>Review the film after full cure or drying:<\/strong> adhesion, hardness, weatherability, and color stability usually decide the commercial result.<\/li>\n<li><strong>Use targeted additive screening:<\/strong> wetting, leveling, defoaming, and wear-resistance additives work best when the defect is clearly defined.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiaf-094\/\">CHLUMIAF 094<\/a>:<\/strong> A balanced defoamer reference for waterborne coatings and many general foam-control screens.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiaf-3037\/\">CHLUMIAF 3037<\/a>:<\/strong> A stronger process-defoaming option when persistent foam survives harsher conditions.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3280\/\">CHLUMIWE 3280<\/a>:<\/strong> A strong wetting-agent reference for inks, coatings, and difficult substrate wetting.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3071-organic-silicone-surfactant-organosilicone-wetting-agent\/\">CHLUMIWE 3071<\/a>:<\/strong> Useful when organosilicone wetting support is needed in a broad application screen.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why can a coating with good initial appearance still fail later?<\/strong><br \/>Because many failures show up only after full cure, storage, or service exposure, when adhesion, flexibility, or weatherability becomes the limiting factor.<\/p>\n<p><strong>Should coating additives be chosen one by one outside the full formula?<\/strong><br \/>It is usually safer to screen them inside the real formula because resin choice, pigments, and the rest of the additive package can change the result.<\/p>\n<!-- lc-commercial-end -->","protected":false},"excerpt":{"rendered":"<p>Shellac flakes is a forest by-product and important industrial raw material with very economic value. Many people regard the transliteration of shellac (LAC) as a vague word representing varnish or<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3260","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is shellac flakes\uff1f - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"Shellac flakes is a forest by-product and important industrial raw material with very economic value. 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