Product Description
|
item |
value |
|
Classification |
Chemical Auxiliary Agent |
|
CAS No. |
9002-89-5 |
|
Other Names |
PVA15-99 |
|
MF |
(C2H4O)x |
|
Place of Origin |
China |
|
Usage |
Construction |
|
Brand Name |
COLORSHINE |
|
Model Number |
1599 |
|
Sample |
Free(1-2 Kg) |
|
Apperance |
White Prowder |
|
PH |
5-7 |
| Ash(%) | 0.7 |
| Volatiles(%) | 5.0 |
| Viscosity (cos) | 19.0-23.0 |
| Hydrolysis (mol%) | 98.0-99.3 |
Product characteristics
PVA 1599 is a white solid, and its appearance can be divided into flocculent, granular and powdery; It can be dissolved in water at 80-90 ºC. Its aqueous solution has good adhesion and film forming performance. Film forming performance: PVA 1599 is easy to form film and has excellent mechanical properties. The tensile strength of the membrane increases with the increase of polymerization degree and alcoholysis degree: PVA 1599 has good adhesion with hydrophilic cellulose. In general, the higher the degree of polymerization and alcoholysis, the stronger the bond strength. Thermal stability: When PVA 1599 is heated to about 100 ºC, its appearance gradually changes. The partially alcoholized polyvinyl alcohol starts to melt at about 190 ºC and decomposes at 200 ºC. The fully alcoholized polyvinyl alcohol 1599 starts to melt at about 230 ºC and decomposes at 240 ºC; The higher the alcoholysis degree, the shorter the decomposition time.
The role of the product.
PVA 1599 has good film forming performance, and the film formed has excellent adhesion and solvent resistance. It can be used together with cellulose ether humectant to improve the flexibility and water retention of cement mortar and gypsum building materials, improve mortar adhesion, reduce the amount of latex powder to a certain extent, and thus reduce the cost of dry powder doors.
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