{"id":1021,"date":"2024-02-04T14:02:11","date_gmt":"2024-02-04T06:02:11","guid":{"rendered":"https:\/\/joyforce-tech.com\/?p=1021"},"modified":"2024-08-25T13:42:46","modified_gmt":"2024-08-25T05:42:46","slug":"how-to-dissolve-polyvinyl-alcohol-pva","status":"publish","type":"post","link":"https:\/\/joyforce-tech.com\/fi\/how-to-dissolve-polyvinyl-alcohol-pva.html","title":{"rendered":"Miten liuotetaan polyvinyylialkoholia PVA:ta?"},"content":{"rendered":"<p style=\"font-weight: 400;\">Polyvinyylialkoholin liuottaminen on eritt\u00e4in herkk\u00e4 toimenpide. Jos liukeneminen ei onnistu hyvin, syntyy mikkeleit\u00e4 tai jopa kovia lohkoja, mik\u00e4 vaikuttaa suoraan my\u00f6hemp\u00e4\u00e4n toimintaan ja tuotteen laatuun. Ensin polyvinyylialkoholi dispergoidaan kylm\u00e4\u00e4n veteen. Dispersio tarkoittaa, ett\u00e4 hiukkaset ovat hajallaan vedess\u00e4, eiv\u00e4tk\u00e4 suuri ryhm\u00e4. Teollisessa tuotannossa sy\u00f6tt\u00f6aukkoon sijoitetaan usein irtotavaran kartiot ja sy\u00f6tt\u00f6nopeutta s\u00e4\u00e4det\u00e4\u00e4n.<\/p>\n<p style=\"font-weight: 400;\">Toinen tapa on asettaa se jonkin aikaa hitaaseen sekoitukseen tai staattiseen tilaan, jotta PVA turpoaa kylm\u00e4ss\u00e4 vedess\u00e4. Turpoamisaika m\u00e4\u00e4r\u00e4ytyy PVA:n tyypin mukaan. Sitten l\u00e4mmitet\u00e4\u00e4n hitaasti ja tasaisesti tiettyyn l\u00e4mp\u00f6tilaan hitaasti sekoittaen PVA:n liuottamiseksi. Liukenemisl\u00e4mp\u00f6tila vaihtelee 80 asteesta 90 asteeseen tietyn mallin mukaan. Hitaan sekoituksen periaatteena on sekoittaa j\u00e4rjestelm\u00e4\u00e4 ilman ilmakuplia.<\/p>\n<p style=\"font-weight: 400;\">Liuotettu PVA on l\u00e4pin\u00e4kyv\u00e4\u00e4 viskoosia nestett\u00e4, jossa on liev\u00e4\u00e4 sinist\u00e4 valoa.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-1011\" src=\"https:\/\/joyforce-tech.com\/wp-content\/uploads\/2024\/02\/6-13.png\" alt=\"\" width=\"685\" height=\"420\" srcset=\"https:\/\/joyforce-tech.com\/wp-content\/uploads\/2024\/02\/6-13.png 685w, https:\/\/joyforce-tech.com\/wp-content\/uploads\/2024\/02\/6-13-300x184.png 300w, https:\/\/joyforce-tech.com\/wp-content\/uploads\/2024\/02\/6-13-18x12.png 18w, https:\/\/joyforce-tech.com\/wp-content\/uploads\/2024\/02\/6-13-600x368.png 600w\" sizes=\"(max-width: 685px) 100vw, 685px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>The dissolution of polyvinyl alcohol is a very delicate operation. If the dissolution is not good, micelles or even hard blocks will appear, which directly affects the subsequent operation and product quality. First, the polyvinyl alcohol is dispersed into cold water. The dispersion means that the particles are scattered in the water, rather than a [&hellip;]<\/p>","protected":false},"author":2,"featured_media":1011,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43],"tags":[],"class_list":["post-1021","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bolg"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.9.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to dissolve polyvinyl alcohol PVA - Joyforce PVA Film and Bag<\/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:\/\/joyforce-tech.com\/fi\/how-to-dissolve-polyvinyl-alcohol-pva.html\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to dissolve polyvinyl alcohol PVA - Joyforce PVA Film and Bag\" \/>\n<meta property=\"og:description\" content=\"The dissolution of polyvinyl alcohol is a very delicate operation. 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