{"id":885,"date":"2024-02-04T13:27:54","date_gmt":"2024-02-04T05:27:54","guid":{"rendered":"https:\/\/www.joyforce.com\/?p=885"},"modified":"2024-02-05T13:38:57","modified_gmt":"2024-02-05T05:38:57","slug":"production-method-of-hpmc","status":"publish","type":"post","link":"https:\/\/www.joyforce.com\/fr\/blogs\/production-method-of-hpmc.html","title":{"rendered":"M\u00e9thode de production du HPMC"},"content":{"rendered":"

Traiter la cellulose de coton raffin\u00e9e avec une solution alcaline \u00e0 35-40\u00b0C pendant une demi-heure, presser, pulv\u00e9riser la cellulose, et vieillir correctement \u00e0 35\u00b0C, de sorte que le degr\u00e9 moyen de polym\u00e9risation de la fibre alcaline obtenue se situe dans la plage requise. Mettre la fibre alcaline dans la bouilloire d'\u00e9th\u00e9rification, ajouter l'oxyde de propyl\u00e8ne et le chlorure de m\u00e9thyle \u00e0 tour de r\u00f4le, et \u00e9th\u00e9rifier \u00e0 50-80\u2103 pendant 5h, la pression maximale est d'environ 1,8MPa. Ensuite, ajouter une quantit\u00e9 appropri\u00e9e d'acide chlorhydrique et d'acide oxalique \u00e0 l'eau chaude \u00e0 90 \u00b0 C pour laver le mat\u00e9riau pour augmenter le volume. D\u00e9shydrater \u00e0 l'aide d'une centrifugeuse, laver jusqu'\u00e0 neutralit\u00e9, lorsque la teneur en eau du mat\u00e9riau est inf\u00e9rieure \u00e0 60%, s\u00e9cher avec un flux d'air chaud \u00e0 130\u00b0C jusqu'\u00e0 ce que la teneur soit inf\u00e9rieure \u00e0 5%, et enfin pulv\u00e9riser et passer \u00e0 travers un tamis de 20 mailles pour obtenir le produit fini.<\/p>\n

\"\"<\/p>","protected":false},"excerpt":{"rendered":"

Traiter la cellulose de coton raffin\u00e9e avec une solution alcaline \u00e0 35-40\u00b0C pendant une demi-heure, presser, pulv\u00e9riser la cellulose et la faire vieillir correctement \u00e0 35\u00b0C, de sorte que le degr\u00e9 moyen de polym\u00e9risation de la fibre alcaline obtenue se situe dans la fourchette requise. Placer la fibre alcaline dans la bouilloire d'\u00e9th\u00e9rification, ajouter de l'oxyde de propyl\u00e8ne et du chlorure de m\u00e9thyle dans [...]<\/p>","protected":false},"author":1,"featured_media":877,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-885","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"acf":[],"yoast_head":"\nProduction method of HPMC - JOYFORCE INDUSTRIAL<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.joyforce.com\/fr\/blogs\/production-method-of-hpmc.html\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Production method of HPMC - JOYFORCE INDUSTRIAL\" \/>\n<meta property=\"og:description\" content=\"Treat the refined cotton cellulose with alkali solution at 35-40\u00b0C for half an hour, press, pulverize the cellulose, and properly age at 35\u00b0C, so that the average degree of polymerization of the obtained alkali fiber is within the required range. 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