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Classification: Chemical Auxiliary Agent
CAS No.: 9002-89-5
Other Names: PVA;PVOH;PVAL
MF: C2H4O
EINECS No.: 209-183-3
Purity: 99% min
Place of Origin: China
Type: chemical auxiliary agent
China supplier best price PVA WANWEI Polyvinyl Alcohol Pva 24-88A Powder
PVA2488 is a light stable, hygroscopic, fully hydrolyzed, polyvinyl alcohol (PVA) grade. Soluble in strong/weak acids and alkalis. Exhibits chemical & solvent resistance, resistance against permeation of gases such as oxygen, nitrogen & carbon-dioxide, less sensitivity to humidity than other water-soluble resins and non-toxicity. Offers excellent film formation, emulsifying power and adhesion to the substrate. It's color turns yellowish gradually when heated above 100°C, turns dark rapidly above 160 °C.
TESTEDTEM | UNIT | QUANLITY DATE | TESTED RESULT | |
ALCOHOLYSIS DEGREE | % MOL/MOL | 86.0-89.0 | 87.39 | |
VISCOSITY | MPA·S | 42.0-52.0 | 48.10 | |
SODIUM ACETATE | % | MAX | 2.5 max | 0.80 |
VOLATILES | % | MAX | 5.0 max | 3.10 |
ASH | % | MAX | 0.5max | 0.28 |
PH PH VALUE | 5-7 | 6.00 | ||
CONCLUSION | QUALIFIED | |||
Application:
1.PVA2488 is recommended in textile industry for warp sizing and resin finishing, paper industry for surface sizing and pigment coating, production of PVAc emulsion as protective colloid, suspension polymerization of PVC as a dispersion agent and binder for ceramics, magnet, foundry cores & pigments.
2.This product is mainly used in internal & external putty, interface agent, ceramic adhesive, gypsum plaster, which can increase the cement, mortar's adhesive, flowing performance effectively, also can slow down cement surface drying time, increasing painting adaptability and prevent the crack of cement coating.
Advantage:It has good water solubility, adhesion, film flexibility, smoothness, oil resistance, solvent resistance, protective colloid, gas barrier, abrasion resistance and thermal stability.
Package: 20Kg/bag, 25KG/bag
Storage: Stored under normal temperature, pay attention not to get wet.
