Polyvinyl Alcohol Application

Polyvinyl Alcohol products have a wide range of uses. In the textile industry, they are mainly used as yarn pulp, fabric finishing...

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Polyvinyl Alcohol Grades

Polyvinyl Alcohol is manufactured by polymerization of vinyl acetate monomer, followed by hydrolysis of the polyvinyl acetate. HOP...

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Polyvinyl Alcohol Introduction

Polyvinyl Alcohol is a water soluble and biodegradable synthetic polymer. It is adry solid, and is available in granule and powder...

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what is polyvinyl acetate

HOPEWAY fine powder PVA HWP-05S,HWP-20S and HWP-24S are specially designed for cement additives and building
industry.They improve plaster properties such as flexibility,water retention,and increase plaster viscosity as
well.In addition,they do not only reduce the friction of plaster but also enhance its working capacity and quali-
ty.(Prevent cracking and shedding of plaster,increase adhesion and smoothness of cement.) To mix desired
amount of PVA with cement well before water is added prevents the lumping of PVA.
As the PVA solution can be prepared with a solid content not exceed 30%, a considerable amount of water has
to be evaporated for film formation.This process can be speed up by adding lower alcohols such as methanol
ethanol and propanol to the solution. The quantity added is depending on the grade of PVA and alcohol used
The limit of compatibility is indicated by the incipient turbidity of PVA solution.

Viscosity of 4.00 wt % PVA Solution

Prepare three samples of 22 g each in a 600 ml beaker in accordance with the calculation formula.Add distilled

water to the concentrations of 3.8%, 4.0%, and 4.2% and then let it swell for 30 minutes.

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