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[Chemical Knowledge]：Properties and uses of polyvinyl acetate

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Polyvinyl acetate (Polyvinyl Acetate, PVAc) is an important organic polymer compound, which is widely used in the field of chemical production raw materials. This article will detail the properties and uses of polyvinyl acetate.

1. The properties of polyvinyl acetate

1. Physical properties
polyvinyl acetate is a colorless transparent or translucent liquid or solid, with good film-forming, adhesion and water resistance. It has a low melting point, generally 60-65°C, and a glass transition temperature of 20-40°C. Polyvinyl acetate is insoluble in water, but soluble in organic solvents such as acetone, benzene, etc.

2. chemical properties of
polyvinyl acetate has good resistance to chemical corrosion, can resist the erosion of acid, alkali, salt and other chemical substances. But in the strong acid, strong alkali environment, polyvinyl acetate will be decomposed. In addition, polyvinyl acetate also has good thermal stability, can be processed and used at a lower temperature.

2. The use of polyvinyl acetate

1. Adhesive
Polyvinyl acetate is an important adhesive, which is widely used in wood processing, paper processing, textiles, building materials and other fields. Because of its good adhesion and water resistance, it is widely used in various bonding occasions.

2. Coating
Polyvinyl acetate can be used as the basic material of coatings, and can be used in conjunction with other pigments and fillers to make various coatings with excellent performance. Because of its good film formation and strong water resistance, it is widely used in construction, furniture, automobile and other fields.

3. Fabric treatment agent
Polyvinyl acetate can be used for fabric treatment to improve the water resistance, oil resistance and wrinkle resistance of the fabric. At the same time, polyvinyl acetate can also be used as a raw material for fabric printing mucilage to improve the clarity and color vividness of the printed pattern.

4. Plastic modifier
Polyvinyl acetate can be used as a plastic modifier to improve the toughness, impact resistance and processing performance of plastics. At the same time, polyvinyl acetate can also be blended with other polymers to prepare composite materials with excellent performance.

In short, polyvinyl acetate, as an important raw material for the production of chemical products, has a wide range of applications in the fields of adhesives, coatings, fabric treatment agents and plastic modifiers.

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