{"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\/uk\/blogs\/production-method-of-hpmc.html","title":{"rendered":"\u0421\u043f\u043e\u0441\u0456\u0431 \u0432\u0438\u0440\u043e\u0431\u043d\u0438\u0446\u0442\u0432\u0430 \u0413\u041f\u041c\u041a"},"content":{"rendered":"<p style=\"font-weight: 400;\">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. Put the alkali fiber into the etherification kettle, add propylene oxide and methyl chloride in turn, and etherify at 50-80\u2103 for 5h, the maximum pressure is about 1.8MPa. Then add an appropriate amount of hydrochloric acid and oxalic acid to the hot water at 90 \u00b0 C to wash the material to expand the volume. Dehydrate with a centrifuge, wash until neutral, when the water content in the material is less than 60%, dry it with a hot air flow at 130\u00b0C until the content is less than 5%, and finally pulverize and pass through a 20-mesh sieve to obtain the finished product.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-877\" src=\"https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/2-5.png\" alt=\"\" width=\"610\" height=\"437\" srcset=\"https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/2-5.png 610w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/2-5-300x215.png 300w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/2-5-18x12.png 18w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/2-5-600x430.png 600w\" sizes=\"(max-width: 610px) 100vw, 610px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>\u041e\u0431\u0440\u043e\u0431\u0456\u0442\u044c \u043e\u0447\u0438\u0449\u0435\u043d\u0443 \u0431\u0430\u0432\u043e\u0432\u043d\u044f\u043d\u0443 \u0446\u0435\u043b\u044e\u043b\u043e\u0437\u0443 \u0440\u043e\u0437\u0447\u0438\u043d\u043e\u043c \u043b\u0443\u0433\u0443 \u043f\u0440\u0438 35-40\u00b0C \u043f\u0440\u043e\u0442\u044f\u0433\u043e\u043c \u043f\u0456\u0432\u0433\u043e\u0434\u0438\u043d\u0438, \u043f\u0440\u0435\u0441\u0443\u0439\u0442\u0435, \u043f\u043e\u0434\u0440\u0456\u0431\u043d\u0456\u0442\u044c \u0446\u0435\u043b\u044e\u043b\u043e\u0437\u0443 \u0456 \u043d\u0430\u043b\u0435\u0436\u043d\u0438\u043c \u0447\u0438\u043d\u043e\u043c \u0432\u0438\u0442\u0440\u0438\u043c\u0430\u0439\u0442\u0435 \u043f\u0440\u0438 35\u00b0C, \u0449\u043e\u0431 \u0441\u0435\u0440\u0435\u0434\u043d\u0456\u0439 \u0441\u0442\u0443\u043f\u0456\u043d\u044c \u043f\u043e\u043b\u0456\u043c\u0435\u0440\u0438\u0437\u0430\u0446\u0456\u0457 \u043e\u0442\u0440\u0438\u043c\u0430\u043d\u043e\u0433\u043e \u043b\u0443\u0436\u043d\u043e\u0433\u043e \u0432\u043e\u043b\u043e\u043a\u043d\u0430 \u0437\u043d\u0430\u0445\u043e\u0434\u0438\u0432\u0441\u044f \u0432 \u043c\u0435\u0436\u0430\u0445 \u043d\u0435\u043e\u0431\u0445\u0456\u0434\u043d\u043e\u0433\u043e \u0434\u0456\u0430\u043f\u0430\u0437\u043e\u043d\u0443. \u041f\u043e\u043c\u0456\u0441\u0442\u0456\u0442\u044c \u043b\u0443\u0436\u043d\u0435 \u0432\u043e\u043b\u043e\u043a\u043d\u043e \u0432 \u0435\u0442\u0435\u0440\u0438\u0444\u0456\u043a\u0430\u0446\u0456\u0439\u043d\u0438\u0439 \u0447\u0430\u0439\u043d\u0438\u043a, \u0434\u043e\u0434\u0430\u0439\u0442\u0435 \u043f\u0440\u043e\u043f\u0456\u043b\u0435\u043d\u043e\u043a\u0441\u0438\u0434 \u0456 \u0445\u043b\u043e\u0440\u0438\u0441\u0442\u0438\u0439 \u043c\u0435\u0442\u0438\u043b \u0432 [...].<\/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":"<!-- This site is optimized with the Yoast SEO plugin v22.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Production 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\/uk\/blogs\/production-method-of-hpmc.html\/\" \/>\n<meta property=\"og:locale\" content=\"uk_UA\" \/>\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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