Poly Vinyl Alcohol (POVAL)

الوصف

Product Description

1. Name: Poly vinyl Alcohol(POVAL), PVA
2. Molecular formula: [C2H4O]n
3. Molecular weight: *4.*5
4. Physical Property: Density: Relative density of polyvinyl alcohol (*5Celsius degree / 4 Celsius degree) 1.*7 ~ 1.*1 (solid), 1.*2 (*0% solution).
Heating performance: It will be discolored slowly heated to above **0 Celsius degreein the air, embrittlement. Heated to **0 ~ **0Celsius degreeetherification dehydration, loss of solubility, heated to **0 Celsius degree begin to decompose. More than **0Celsius degree into the polymer containing conjugated double bonds.
5. Chemical properties: Soluble in water, heated to completely dissolve the general need to *5 ~ *5 Celsius degree. Not dissolve in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol, etc., slightly soluble in DMSO. **0 ~ l*0 Celsius degree soluble glycerol, however, a jelly when cold to room temperature.
6. Specification: Power ***9, ***9, ***8, ***8, ***8
7. Appearance: White powder
Usage: Fiber can be divided into basic and non-fiber products that we tend to non-fiber, more extensive use, can be used in coatings, adhesives (to prevent the paint from the skin, loss), textile, construction, wood processing, paper making, printing. Play a major role in bonding.