Polyvinyl alcohol: organic compound, white flake, floc or powdery solid, odorless. Soluble in water (above 95°C), slightly soluble in dimethyl sulfoxide, insoluble in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene Alcohol, etc. Polyvinyl alcohol is an important chemical raw material for the production of polyvinyl acetal, gasoline resistant pipe, vinylon synthetic fiber, fabric treatment agent, emulsifier, paper coating, adhesive and so on.
The main use of electronic grade PVA :
Used in the production of polyvinyl acetal, gasoline resistant pipe, vinylon synthetic fiber, fabric treatment agent, emulsifier, paper coating, adhesive and so on.
Water-soluble polyvinyl alcohol fiber and preparation method thereof, characterized in that 100 parts of polyvinyl alcohol, dimethyl sulfoxide having a degree of polymerization of 500 to 2000 and an alcoholysis degree of 75 to 99 mol% is added to a stainless steel dissolution vessel /water=90~70:200~400 mixed solvent, stirring at 80-120 °C, pressure -0.0 1~-0.0 8 MPa, dissolved for 3~4h, formulated into spinning solution, filtered, defoamed, Dry-wet spinning and post-treatment to obtain water-soluble polyvinyl alcohol fibers having a water-soluble temperature of 10 to 90 ° C and a strength of ≥ 3.5 cN / dtex. The single fiber has a fineness of 1.5 to 10 dtex and an elongation at break of 15 to 30%, and the filament is processed into. Mix high-yarn or hollow yarn with tops, slivers, hemp and chemical fibers, or cut into short fibers for non-woven fabrics, embroidered fabrics and paper.