Polyvinyl Alcohol is a few kind of synthetic with water soluble high-molecular polymer. The main specification includes degree of polymerization & alcoholysis and other special performance. Polyvinyl Alcohol is manufactured by polymerization of vinyl acetate in methanol solvent, then undergoing alcoholysis via advanced belt-process of low-alkali. After grinning, drying and packing, the end PVA products are achieved.
Characteristic
PVA resin is a kind of heavy polymer,it is non-toxic, insipid and harmless. PVA is water-soluble and the solvent provide good viscosity and film building. It can withstand oils, lubricants, hydrocarbons and most other organic solvents. PVA has better chemical stability and insulatibility, and provide ease in firm building; It possess the typical chemical properties of polyols and can carry out process of esterification, etherealization, acetalization etc.
Fields of Application
Polyvinyl alcohol (PVA) powder series of products is specialized in construction industry as an additive in all kinds of dry powder putty, dry mortar, tile adhesive, especially used for building putty and Mortar, improving the flexibility, water retention and increase viscosity of mortar and putty. It’s adhesion very good and used to be widely with paper making, sizing material for textile, adhesive, film, and dry mortar field.
Technical Data
Item
PVA
Hydrolysis%(mol/mol)
99.0-100.0
Viscosity mpa.s
22.0-30.0
Alkalization(Mole)
86-89%
Volatile Content (wt)
≤5.0%
Ash(wt)
≤0.5%
PH value
5-7
Purity
≥93.5%
Fineness
20mesh
Usage/Storage
Packing: kraft paper package with plastic film inside, 20kg/25kg per bag.
Store: The products should be stock indoor where room temperature is 5-30℃, dry& well-ventilated place, storage by batches. Keep away from the power, prevent humid, and avoid sun exposure. It is strictly forbidden to store together with volatile chemicals to prevent adsorption deterioration.
Transportation:
When transporting, clean vehicles are required, need pay attention to avoid moisture, rain and sun protection. Handle with care to prevent damage the packaging. It is strictly forbidden to store together with volatile chemicals to prevent adsorption deterioration.
