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Polyvinyl Alcohol PVA

Polyvinyl Alcohol PVA - Chemistry Forum

Polyvinyl Alcohol PVA - Chemistry Forum. Discuss chemical reactions, chemistry.


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Old 08-16-2013, 08:22 AM
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Default Polyvinyl Alcohol PVA



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.
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Old 08-16-2013, 08:27 AM
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Default Re: Polyvinyl Alcohol PVA

Water soluble PVA fiber
Water soluble PVA fiber is also called Water-soluble PVA short cutting fiber. It is obtained by subjecting to the conventional dry or wet spinning process, a solution prepared by adding to a polyvinyl alcohol aqueous solution, an adduct composed of a polyamide condensation product and 1-halogen-2,3-epoxy propane or ethylene glycol diglycidyl ether in the range from 5 to 50 percent by weight based upon the polyvinyl alcohol.
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Old 08-16-2013, 08:28 AM
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Default Re: Polyvinyl Alcohol PVA

High strength & modulus PVA fiber
Applications:
1) Replacement of asbestos and manufacture the asbestos cement products.
2) As the non asbestos material for heat and attrition resistance, plastic and rubber reinforcement.
3) Making high strength fishing meshes, cables, safety nets.
4) Make the light wallboard, insulation board and other building material.
5) Making the sprayed concrete, such as tunnel, mine, culvert and side slope.
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