{"id":12104,"date":"2026-01-21T13:04:19","date_gmt":"2026-01-21T13:04:19","guid":{"rendered":"https:\/\/rawchemicalmart.com\/?post_type=product&p=12104"},"modified":"2026-01-23T06:43:52","modified_gmt":"2026-01-23T06:43:52","slug":"alcool-polyvinylique-pva-1788","status":"publish","type":"product","link":"https:\/\/rawchemicalmart.com\/fr\/produit\/alcool-polyvinylique-pva-1788\/","title":{"rendered":"Alcool polyvinylique (PVA) 17-88 \/ PVA 088-20"},"content":{"rendered":"

Caract\u00e9ristiques:<\/h2>\n
\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
Article<\/th>Sp\u00e9cification<\/th>M\u00e9thode d'essai \/ Note<\/th>\n<\/tr>\n<\/thead>\n
Nom du produit<\/td>Alcool polyvinylique (PVA) 17-88 \/ 1788<\/td><\/td>\n<\/tr>\n
Apparence<\/td>Poudre\/particules blanches<\/td><\/td>\n<\/tr>\n
Degr\u00e9 d'alcoolisation<\/td>86,00 - 90,00 mol%<\/td>(Partiellement hydrolys\u00e9)<\/td>\n<\/tr>\n
Viscosit\u00e9<\/td>19,5 - 32,0 mPa.s<\/td>(Solution aqueuse de 4% \u00e0 20\u00b0C)<\/td>\n<\/tr>\n
Contenu volatil<\/td>\u2264 5,0 wt%<\/td><\/td>\n<\/tr>\n
Puret\u00e9<\/td>\u2265 93,5 wt%<\/td>(Valeur calcul\u00e9e)<\/td>\n<\/tr>\n
valeur du pH<\/td>5 ~ 7<\/td><\/td>\n<\/tr>\n
Teneur en cendres<\/td>\u2264 0,5 poids%<\/td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Note<\/b>La viscosit\u00e9 est mesur\u00e9e sur une solution aqueuse 4%. La puret\u00e9 est une valeur calcul\u00e9e.<\/div>\n

Applications :<\/h2>\n
\n

Notre PVA 1788 est con\u00e7u pour diverses applications industrielles\u00a0:<\/p>\n

    \n
  • \n

    Industrie des adh\u00e9sifs<\/b>Il sert de liant principal pour les adh\u00e9sifs destin\u00e9s au papier, au bois et aux textiles. Son fort pouvoir adh\u00e9sif le rend id\u00e9al pour les colles de bureau et les adh\u00e9sifs d'emballage.<\/p>\n<\/li>\n

  • \n

    Mat\u00e9riaux de construction<\/b>Utilis\u00e9 comme additif dans les mortiers secs, les enduits et les colles \u00e0 carrelage, il am\u00e9liore la r\u00e9tention d'eau, la flexibilit\u00e9 et l'adh\u00e9rence du mat\u00e9riau cimentaire.<\/p>\n<\/li>\n

  • \n

    Traitement du papier<\/b>Am\u00e9liore la r\u00e9sistance de surface, l'imprimabilit\u00e9 et la r\u00e9sistance \u00e0 l'huile des produits en papier.<\/p>\n<\/li>\n

  • \n

    D\u00e9veloppement de films<\/b>Gr\u00e2ce \u00e0 ses excellentes propri\u00e9t\u00e9s filmog\u00e8nes, il est utilis\u00e9 pour fabriquer des films hydrosolubles et des rev\u00eatements protecteurs.<\/p>\n<\/li>\n

  • \n

    Industrie des stabilisateurs<\/b>: Agit comme \u00e9mulsifiant efficace et collo\u00efde protecteur dans la polym\u00e9risation des \u00e9mulsions d'ac\u00e9tate de vinyle (PVAc).<\/p>\n<\/li>\n

  • \n

    Moulage plastique<\/b>Utilis\u00e9 comme agent de d\u00e9moulage et modificateur de surface dans la production de plastique.<\/p>\n<\/li>\n<\/ul>\n

    Emballage:<\/h2>\n

    25 kg par sac.<\/p>\n

    Produit<\/b><\/strong>\u00a0Stockage:<\/b><\/strong><\/h2>\n

    \u00c0 conserver dans un endroit frais, sec et bien ventil\u00e9. \u00c0 prot\u00e9ger de l'humidit\u00e9 et de la lumi\u00e8re directe du soleil afin de pr\u00e9server la qualit\u00e9 du produit.<\/p>\n<\/div>\n

    FAQ :<\/h2>\n

    Q : Quelle est la diff\u00e9rence entre le PVA 1788 et le PVA 2488 ?<\/b><\/p>\n

    A : La principale diff\u00e9rence r\u00e9side dans le viscosit\u00e9<\/b> et degr\u00e9 de polym\u00e9risation<\/b>. Le PVA 1788 pr\u00e9sente g\u00e9n\u00e9ralement une viscosit\u00e9 plus faible (19,5 \u00e0 32,0 mPa\u00b7s) que le PVA 2488, ce qui le rend plus adapt\u00e9 aux applications n\u00e9cessitant une dissolution plus rapide et une solution moins visqueuse. Ces deux grades sont partiellement hydrolys\u00e9s.<\/p>\n

    Q : Le PVA 1788 est-il soluble dans l'eau froide ?<\/b><\/p>\n

    A : Le PVA 1788 est un grade partiellement hydrolys\u00e9 (86-90%), qui offre g\u00e9n\u00e9ralement une meilleure solubilit\u00e9 dans l'eau que les grades totalement hydrolys\u00e9s. Il peut se dissoudre dans l'eau chaude, mais pour une dissolution compl\u00e8te et des performances optimales, un chauffage \u00e0 des temp\u00e9ratures sp\u00e9cifiques (g\u00e9n\u00e9ralement autour de 80-90 \u00b0C) est recommand\u00e9 en fonction du proc\u00e9d\u00e9 d'application.<\/p>\n

    Q : Le PVA 1788 peut-il \u00eatre utilis\u00e9 dans les adh\u00e9sifs pour emballages alimentaires ?<\/b><\/p>\n

    R : Oui, en raison de sa nature non toxique et de ses excellentes propri\u00e9t\u00e9s adh\u00e9sives, le PVA 1788 est souvent utilis\u00e9 dans les adh\u00e9sifs pour les emballages en papier qui peuvent entrer indirectement en contact avec des produits alimentaires.<\/p>","protected":false},"excerpt":{"rendered":"

    Polyvinyl Alcohol 1788 (also known as PVA 088-20) is a partially alcoholized, medium-viscosity grade water-soluble polymer. It is renowned for its excellent film-forming capabilities, strong adhesion, and superior emulsifying properties.\nAs a versatile raw material, our PVA 1788 is widely used across the construction, textile, and adhesive industries. It is soluble in water while remaining resistant to oils, grease, and most organic solvents, making it an essential additive for enhancing the performance of mortar, putty, and industrial adhesives.\n<\/p>","protected":false},"featured_media":12113,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[58],"product_tag":[],"class_list":{"0":"post-12104","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-polyvinyl-alcohol-pva","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"acf":[],"yoast_head":"\nPolyvinyl Alcohol (PVA) 17-88 | Manufacturer & Supplier - RawChemicalMart<\/title>\n<meta name=\"description\" content=\"Buy high-quality Polyvinyl Alcohol 1788 (PVA 088-20) from RawChemicalMart. Partially hydrolyzed grade with 86-90 mol% alcoholysis. Ideal for adhesives, paper processing, and building materials. 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