{"id":938,"date":"2024-02-04T13:38:43","date_gmt":"2024-02-04T05:38:43","guid":{"rendered":"https:\/\/www.joyforce.com\/?p=938"},"modified":"2024-02-05T13:32:39","modified_gmt":"2024-02-05T05:32:39","slug":"how-to-simply-and-intuitively-identify-the-quality-of-hydroxypropyl-methylcellulose-hpmc","status":"publish","type":"post","link":"https:\/\/www.joyforce.com\/zh\/blogs\/how-to-simply-and-intuitively-identify-the-quality-of-hydroxypropyl-methylcellulose-hpmc.html","title":{"rendered":"\u5982\u4f55\u7b80\u5355\u76f4\u89c2\u5730\u9274\u522b\u7f9f\u4e19\u57fa\u7532\u57fa\u7ea4\u7ef4\u7d20 hpmc \u7684\u8d28\u91cf\uff1f"},"content":{"rendered":"<p>(1) Whiteness: Although whiteness cannot determine whether HPMC is easy to use, and if a brightener is added in the production process, it will affect its quality. However, most of the good products have good whiteness. (2) Fineness: The fineness of HPMC is generally 80 mesh and 100 mesh, and 120 mesh is less. Most of the HPMC produced in Hebei is 80 mesh. The finer the fineness, the better. (3) Transmittance: Put hydroxypropyl methylcellulose (HPMC) in water to form a transparent colloid, and look at its transmittance. The higher the transmittance, the better, indicating that there are less insoluble substances in . The permeability of vertical reactors is generally good, and that of horizontal reactors is worse, but it cannot be said that the quality of vertical reactors is better than that of horizontal reactors, and there are many factors that determine product quality. (4) Specific gravity: the larger the specific gravity, the heavier the better. The specific gravity is large, generally because the hydroxypropyl content in it is high, and the hydroxypropyl content is high, the water retention is better. (5) Burning: Take a small part of the sample and ignite the residue with fire. The white residue is ash. The more white matter, the worse the quality, and the pure product has almost no residue.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-921\" src=\"https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/4-10.png\" alt=\"\" width=\"600\" height=\"350\" srcset=\"https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/4-10.png 600w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/4-10-300x175.png 300w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/4-10-18x12.png 18w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>(1) \u767d\u5ea6\uff1a\u867d\u7136\u767d\u5ea6\u4e0d\u80fd\u51b3\u5b9a HPMC \u662f\u5426\u6613\u4e8e\u4f7f\u7528\uff0c\u4f46\u5982\u679c\u5728\u751f\u4ea7\u8fc7\u7a0b\u4e2d\u6dfb\u52a0\u4e86\u589e\u767d\u5242\uff0c\u5219\u4f1a\u5f71\u54cd\u5176\u8d28\u91cf\u3002\u4f46\u5927\u591a\u6570\u597d\u7684\u4ea7\u54c1\u767d\u5ea6\u90fd\u5f88\u597d\u3002(2\uff09\u7ec6\u5ea6\uff1aHPMC \u7684\u7ec6\u5ea6\u4e00\u822c\u4e3a 80 \u76ee\u548c 100 \u76ee\uff0c120 \u76ee\u8f83\u5c11\u3002\u5927\u591a\u6570 [...]<\/p>","protected":false},"author":1,"featured_media":921,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-938","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>How to simply and intuitively identify the quality of hydroxypropyl methylcellulose 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\/zh\/blogs\/how-to-simply-and-intuitively-identify-the-quality-of-hydroxypropyl-methylcellulose-hpmc.html\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to simply and intuitively identify the quality of hydroxypropyl methylcellulose hpmc? - JOYFORCE INDUSTRIAL\" \/>\n<meta property=\"og:description\" content=\"(1) Whiteness: Although whiteness cannot determine whether HPMC is easy to use, and if a brightener is added in the production process, it will affect its quality. 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