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 (*5 ℃ / 4 ℃)
1.*7 ~ 1.*1 (solid), 1.*2 (*0% solution.
Heating performance:
it will be discolored slowly heated to above **0 ℃in the air,
embrittlement. Heated to **0 ~ **0 ℃ etherification dehydration,
loss of solubility, heated to **0 ℃ begin to decompose. More than
**0 ℃ into the polymer containing conjugated double
bonds.
5. Chemical properties:
Soluble in water, heated to completely dissolve the general need to
*5 ~ *5 ℃. 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 ℃ soluble glycerol, however, a jelly when cold to
room temperature.
6. Specification: power
***9, ***9, ***8, ***8, ***8
7. Appearance: White
powder
8. Transport
orStorage:
Stored in a ventilated, cool and dry place, away
from fire. Transport should be handled with care to prevent damage
to packaging.
9. 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. *0. Features: And CMC, have
a customer needs the product price, must first ask him what is
specific to the viscosity and specific
purposes.
