{"id":567,"date":"2024-02-04T11:58:34","date_gmt":"2024-02-04T03:58:34","guid":{"rendered":"https:\/\/www.joyforce.com\/?p=567"},"modified":"2024-02-05T13:56:30","modified_gmt":"2024-02-05T05:56:30","slug":"the-use-of-polyvinyl-alcohol-and-its-gelation-process","status":"publish","type":"post","link":"https:\/\/www.joyforce.com\/es\/blogs\/the-use-of-polyvinyl-alcohol-and-its-gelation-process.html","title":{"rendered":"El uso del alcohol polivin\u00edlico y su proceso de gelificaci\u00f3n"},"content":{"rendered":"<p>El poli (alcohol vin\u00edlico) es un tipo de pol\u00edmero soluble en agua que se obtiene por hidr\u00f3lisis del acetato de polivinilo en lugar de la polimerizaci\u00f3n del mon\u00f3mero. Es soluble en glicerina a 120-150 \u2103, pero se vuelve gelatinoso a temperatura ambiente. En el paso de disoluci\u00f3n del alcohol polivin\u00edlico, el material debe a\u00f1adirse en agua a temperatura ambiente bajo agitaci\u00f3n, y luego calentarse para acelerar la disoluci\u00f3n.<\/p>\n<p>La viscosidad de la soluci\u00f3n acuosa de PVA 17-88 aumenta con el tiempo a temperatura ambiente. Sin embargo, cuando la concentraci\u00f3n es 8%, la viscosidad es absolutamente estable. El alcohol polivin\u00edlico 17-92 se denomina PVA17 92. La soluci\u00f3n de PvA17 99 es m\u00e1s sensible que la de PVA17-88. El b\u00f3rax de 0,1% de la calidad de la soluci\u00f3n gelatinizar\u00e1 de 5%PVA17 99 soluci\u00f3n, y la cantidad de b\u00f3rax causada por la misma concentraci\u00f3n de PVA17-88 soluci\u00f3n acuosa es 1%. El alcohol polivin\u00edlico 1799b se utiliza principalmente para fabricar butiral de polivinilo de alta viscosidad. Se utiliza ampliamente como dispersante de agente de encolado.<\/p>\n<p>Adem\u00e1s, el alcohol polivin\u00edlico presenta diversas reacciones t\u00edpicas de los compuestos hidrox\u00edlicos secundarios, como la esterificaci\u00f3n. Puede degradarse en \u00e1cido fuerte, ablandarse o disolverse en \u00e1cido d\u00e9bil y base. El PVA de alta concentraci\u00f3n no es compatible con la sal inorg\u00e1nica, especialmente el sulfato y el fosfato. El fosfato puede precipitar 5% (w \/ V) PVA. El b\u00f3rax puede formar gel con la soluci\u00f3n de alcohol polivin\u00edlico.<\/p>\n<p>El alcohol polivin\u00edlico es un buen pegamento, que puede sustituir a la mayor\u00eda de los pegamentos industriales. \u00bfC\u00f3mo hervir el pegamento de alcohol polivin\u00edlico? En primer lugar, prepare varios recipientes con alcohol polivin\u00edlico, un vaso de precipitados de 1000 ml, un plato de cristal, un hornillo el\u00e9ctrico y un recipiente de acero inoxidable (de 30-40 cm de di\u00e1metro). Cuando est\u00e9 listo, introduce 50-80 gramos de alcohol polivin\u00edlico en el vaso de precipitados. A\u00f1ade 900-1000 ml de agua a temperatura normal al vaso de precipitados y remueve con una varilla de vidrio. El agua no debe estar demasiado llena. Es mejor que est\u00e9 a 2-3 cm de la boca del vaso de precipitados. Si est\u00e1 demasiado llena, el calor rebosar\u00e1. Coloque el vaso de precipitados en la cubeta de acero inoxidable, a\u00f1ada agua a temperatura normal a la cubeta de acero inoxidable y sumerja 2\/3 de la altura del vaso de precipitados. Coloque el recipiente de acero inoxidable en el horno el\u00e9ctrico para calentarlo y remu\u00e9valo mientras se calienta. Una vez que el alcohol polivin\u00edlico s\u00f3lido se haya disuelto por completo, saque el vaso de precipitados (tenga cuidado de no quemarse) y enfr\u00edelo a temperatura ambiente. Tenga cuidado con las fugas el\u00e9ctricas y evite descargas el\u00e9ctricas. Precauci\u00f3n: Caliente. Remover a fondo durante el calentamiento para evitar la formaci\u00f3n de granos.<\/p>","protected":false},"excerpt":{"rendered":"<p>El poli (alcohol vin\u00edlico) es un tipo de pol\u00edmero soluble en agua que se obtiene por hidr\u00f3lisis del acetato de polivinilo en lugar de la polimerizaci\u00f3n del mon\u00f3mero. Es soluble en glicerina a 120-150 \u2103, pero se vuelve gelatinoso a temperatura ambiente. En el paso de disoluci\u00f3n del alcohol polivin\u00edlico, el material debe a\u00f1adirse en agua a temperatura ambiente bajo agitaci\u00f3n, y luego calentarse a [...]<\/p>","protected":false},"author":1,"featured_media":568,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-567","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 use of polyvinyl alcohol and its gelation process - 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\/es\/blogs\/the-use-of-polyvinyl-alcohol-and-its-gelation-process.html\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The use of polyvinyl alcohol and its gelation process - JOYFORCE INDUSTRIAL\" \/>\n<meta property=\"og:description\" content=\"Poly (vinyl alcohol) is a kind of water-soluble polymer obtained by hydrolysis of polyvinyl acetate instead of monomer polymerization. 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