{"id":1055,"date":"2024-02-04T14:08:49","date_gmt":"2024-02-04T06:08:49","guid":{"rendered":"https:\/\/www.joyforce.com\/?p=1055"},"modified":"2024-02-05T13:21:25","modified_gmt":"2024-02-05T05:21:25","slug":"characteristics-of-pva-1788","status":"publish","type":"post","link":"https:\/\/www.joyforce.com\/tr\/blogs\/characteristics-of-pva-1788.html","title":{"rendered":"PVA 1788'in \u00f6zellikleri"},"content":{"rendered":"

Polyvinyl alcohol PVA 1788 sheet; odorless, soluble in water at 60-80\u00b0C. Its aqueous solution has good adhesion, film-forming and emulsifying properties; it is resistant to most organic solvents such as oils, lubricants and hydrocarbons; it has chemical properties such as esterification, etherification and acetalization of long-chain polyols.<\/p>\n

    \n
  1. Film-forming property: PVA 1788 is easy to form a film, and its film has excellent mechanical properties. The tensile strength of the film increases with the increase of the degree of polymerization and the degree of alcoholysis.<\/li>\n<\/ol>\n
      \n
    1. Adhesion: PVA 1788 has good adhesion to hydrophilic cellulose. In general, the higher the degree of polymerization and alcoholysis, the stronger the bond strength.<\/li>\n<\/ol>\n
        \n
      1. Thermal stability: When the PVA 1788 sheet is heated to about 100 \u2103, the appearance changes gradually. The partially alcoholyzed PVA begins to melt at around 190\u00b0C and decomposes at 200\u00b0C. Complete alcoholysis of PVA begins to melt at about 230\u00b0C, and decomposes at 240\u00b0C. Thermal cracking experiments show that the lower the degree of polymerization, the faster the weight loss; the higher the degree of alcoholysis, the shorter the decomposition time.<\/li>\n<\/ol>\n

        \"\"<\/p>","protected":false},"excerpt":{"rendered":"

        Polivinil alkol PVA 1788 levha; kokusuz, 60-80\u00b0C'de suda \u00e7\u00f6z\u00fcn\u00fcr. Sulu \u00e7\u00f6zeltisi iyi yap\u0131\u015fma, film olu\u015fturma ve em\u00fclsifiye etme \u00f6zelliklerine sahiptir; ya\u011flar, ya\u011flay\u0131c\u0131lar ve hidrokarbonlar gibi \u00e7o\u011fu organik \u00e7\u00f6z\u00fcc\u00fcye kar\u015f\u0131 dayan\u0131kl\u0131d\u0131r; uzun zincirli poliollerin esterifikasyonu, eterifikasyonu ve asetalizasyonu gibi kimyasal \u00f6zelliklere sahiptir. Film olu\u015fturma \u00f6zelli\u011fi: PVA 1788'in olu\u015fturulmas\u0131 kolayd\u0131r [...]<\/p>","protected":false},"author":1,"featured_media":1046,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"acf":[],"yoast_head":"\nCharacteristics of PVA 1788 - 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\/tr\/blogs\/characteristics-of-pva-1788.html\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Characteristics of PVA 1788 - JOYFORCE INDUSTRIAL\" \/>\n<meta property=\"og:description\" content=\"Polyvinyl alcohol PVA 1788 sheet; odorless, soluble in water at 60-80\u00b0C. Its aqueous solution has good adhesion, film-forming and emulsifying properties; it is resistant to most organic solvents such as oils, lubricants and hydrocarbons; it has chemical properties such as esterification, etherification and acetalization of long-chain polyols. 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