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Polyvinyl alcohol ( CHINA PVA )
Polyvinyl alcohol PVA Performace
Polyvinyl alcohol (abbreviated as PVA) also can be called PVOH. It is a kind of heavy polymer, produced by polymerization and alcoholysis of vinyl acetate. PVA is white or light yellow floccus, granular or powdery in appearance. Its molecular formula is［CH2CHOH］n，and the molecular formula for some of the PVA is -［CH2CHOH］n-［CH2CHOOCCH3］m-. PVA is non-toxic, insipid and harmless. It is water-soluble and the solvent provide good viscosity and film building.
Polyvinyl alcohol, PVA,poval
|
Name |
polyvinyl alcohol,PVA,poval |
|
CAS No. |
9002-89-5 |
|
Molecular formula |
[C2H4O]n |
|
Appearance |
white flakes,floccus or powder solid,odourless |
|
Relative density(25°C/4°C) |
1.27-1.31(solid), 1.02(10% solution) |
|
Glass state temperature |
75-85°C |
|
Refractive index |
1.49-1.52 |
|
Thermal conductivity |
0.2w/(m·K) |
|
Specific heat |
1-5kJ/(kg·K) |
|
Resistivity |
(3.1~3. 8)×10Ω·cm |
|
Ignition temperature(°C) |
410(powder) |
|
Lower explosive limit(V/V) |
125(g/m3 ) |
Applications
1,adhesive and lamination agents
2,sizing and coating for textiles and paper
3,emulsifying agent in waxes
4,cosmetic
5,stencil screens;ceramic binders
6,fabric and rubberlike products
7,protective films for metal,plastic,cloth
8,printer inks for glass and plastics
9,flexible fuel line ...etcGet Latest Price
Package:
It’s packed in the braided polypropylene bags lined with a polyethylene film.The net weight of each bag is 25kg,50kg ..And it could be packed according to the customers’ requirements.
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