Expanded Vinyl Acetate

Polyvinyl acetate pvac a synthetic resin prepared by the polymerization of vinyl acetate. Vinyl acetate c4h6o2 cid 7904 structure chemical names physical and chemical properties classification patents literature biological activities safety. 1 acetoxyethylene ethenyl acetate ethenyl ethanoate vac vinyl acetate monomer vinyl ethanoate cas no.

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Eva Foam Ethylene Vinyl Acetate Expanded Foam Rubber Foam Eva Foam Eva

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It is typically used as a shock absorber in sports shoes for example.

Expanded vinyl acetate.

It is a copolymer and is processed as a thermoplastics mater. Read more on this topic major industrial polymers. Eva foam is also waterproof. Tests of its resilience elasticity under iso 8307 the ball rebound test show thatinfinergy achieves a rebound of over 57.

Eva foam is a great option for cooler lids personal water craft surfboards stand up paddleboards or anywhere else you might want cushioned wet traction. Ethylene vinyl acetate also known as poly is the copolymer of ethylene and vinyl acetate. While the eva foam does not contain any rubber is is commonly referred to as expanded rubber or foam rubber. The major industrial route involves the reaction of ethylene and acetic acid with oxygen in the presence of a palladium catalyst.

The eva copolymer which is based on a low proportion of va may be referred to as vinyl acetate modified polyethylene. Dot id guide. Eva is one of the materials popularly known as expanded rubber or foam rubber. Ethylene vinyl acetate or eva material is an elasticized closed cell foam with rubber like softness and flexibility.

With softness and flexibility approaching elastomeric materials eva has good clarity and gloss barrier properties low temperature toughness stress crack resistance and ultraviolet uv resistance. It also is used in adhesives. Eva mats will have a glossy appearance and are resistant to uv radiation and cracking. In its most important application polyvinyl acetate serves as the film forming ingredient in water based latex paints.

Eva expanded vinyl acetate foam decking products have been become wildly popular due to the low cost great looks simple installation and comfort. This is therefore significantly higher than comparable particle foams such as expanded polypropylene epp at 30 ethylene vinyl acetate eva at 37 or expanded polyethylene epe at 50. The weight percent of vinyl acetate usually varies from 10 to 40 with the remainder being ethylene. Since vinyl alcohol is highly unstable with respect to acetaldehyde the preparation of vinyl acetate is more complex than the synthesis of other acetate esters.

There are three different types of eva copolymer which differ in the vinyl acetate content and the way the materials are used. Eva foam is used as padding in equipment for various sports such as ski boots hockey boxing mixed martial arts wakeboard boots and waterski boots. Vinyl acetate is the acetate ester of vinyl alcohol. Westlake specializes in ethylene vinyl acetate eva formulations with vinyl acetate content that has expanded up to 28 appropriate for use in thermoplastic extrusion film compounds and foam molding.