{"id":777,"date":"2024-02-04T13:08:01","date_gmt":"2024-02-04T05:08:01","guid":{"rendered":"https:\/\/www.joyforce.com\/?p=777"},"modified":"2024-02-05T13:48:21","modified_gmt":"2024-02-05T05:48:21","slug":"the-origin-and-development-of-pva","status":"publish","type":"post","link":"https:\/\/www.joyforce.com\/fr\/blogs\/the-origin-and-development-of-pva.html","title":{"rendered":"L'origine et le d\u00e9veloppement du PVA"},"content":{"rendered":"<p>L'alcool polyvinylique a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour la premi\u00e8re fois par des chimistes allemands\u00a0<strong>W.0. Herrmann<\/strong>\u00a0et\u00a0<strong>W.W. Hachnel<\/strong>\u00a0Les mat\u00e9riaux sont largement utilis\u00e9s dans la production industrielle et agricole et dans les applications m\u00e9dicales. Le traitement insoluble le d\u00e9nature et lui conf\u00e8re diff\u00e9rents effets fonctionnels, ce qui a donn\u00e9 lieu \u00e0 une s\u00e9rie de synth\u00e8ses. Les mat\u00e9riaux sont largement utilis\u00e9s dans la production industrielle et agricole et dans les applications m\u00e9dicales. L'alcool polyvinylique est apparu en 1926. La production industrielle a commenc\u00e9 et le produit a \u00e9t\u00e9 industrialis\u00e9 \u00e0 grande \u00e9chelle dans les ann\u00e9es 1950. Le processus de production de l'alcool polyvinylique est divis\u00e9 en deux types selon les mati\u00e8res premi\u00e8res : la m\u00e9thode de l'\u00e9thyl\u00e8ne et la m\u00e9thode de l'ac\u00e9tyl\u00e8ne.<\/p>\n<p>&nbsp;<\/p>\n<p>\u00c0 l'heure actuelle, une vari\u00e9t\u00e9 de nouveaux processus, de nouvelles technologies, de nouveaux mat\u00e9riaux et de nouveaux \u00e9quipements \u00e9mergent en flux continu, tels que de nouveaux catalyseurs et leurs supports, une nouvelle technologie de plateau, la modification de la structure interne du r\u00e9acteur, la modification des conditions et des m\u00e9thodes d'exploitation, et l'utilisation compl\u00e8te des trois d\u00e9chets. Une utilisation raisonnable de ces nouvelles technologies peut produire des avantages \u00e9conomiques \u00e9vidents.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-770\" src=\"https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/3.png\" alt=\"\" width=\"380\" height=\"325\" srcset=\"https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/3.png 380w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/3-300x257.png 300w, https:\/\/www.joyforce.com\/wp-content\/uploads\/2024\/02\/3-14x12.png 14w\" sizes=\"(max-width: 380px) 100vw, 380px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>L'alcool polyvinylique a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour la premi\u00e8re fois par les chimistes allemands W.0. Herrmann et W.W. Hachnel en 1924, parce qu'il peut effectuer des r\u00e9actions chimiques typiques des polyols et passer. Le traitement insoluble le rend d\u00e9natur\u00e9 et a diff\u00e9rents effets fonctionnels, ce qui a donn\u00e9 lieu \u00e0 une s\u00e9rie de synth\u00e8sesLes mat\u00e9riaux sont largement utilis\u00e9s dans la production industrielle et agricole et dans les applications m\u00e9dicales. L'alcool polyvinylique est apparu en 1926. La production industrielle est [...]<\/p>","protected":false},"author":1,"featured_media":770,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-777","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>The origin and development of PVA - 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\/the-origin-and-development-of-pva.html\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The origin and development of PVA - JOYFORCE INDUSTRIAL\" \/>\n<meta property=\"og:description\" content=\"Polyvinyl alcohol was first developed by German chemists\u00a0W.0. 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