Ethylene vinyl acetate or eva is a copolymer of ethylene and vinyl acetate with a structure as shown below.
Ethylene vinyl acetate melting point.
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Melting point depression in ethylene vinyl acetate copolymer mixtures n.
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Ethylene vinyl acetate eva is a random copolymer of ethylene and varying amounts of vinyl acetate va.
The food and drug administration fda has stated that ethylene vinyl acetate is safe when used in food production packaging or transportation and it s not an especially dangerous material.
Poly ethylene co vinyl acetate vinyl acetate 40 wt.
Visit chemicalbook to find more ethylene vinyl acetate copolymer 24937 78 8 information like chemical properties structure melting point boiling point density molecular formula molecular weight physical properties toxicity information customs codes.
Ldpe lldpe whereas a higher percentage of eva is often used to reduce the melting point and to improve the low temperature.
It is an extremely elastic and tough thermoplastic of excellent clarity and gloss and with little odor.
As the va content increases crystallinity decreases until at 50 the eva is.
The va comonomer interferes with chain packing reducing crystallinity and thus lowering t m and improving transparency when compared with ldpe.
Poly ethylene co vinyl acetate 4 product results.
Boiling point c 0 100 1 101 200 1 melting point c 0 100 5 color.
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Poly ethylene co vinyl acetate vinyl acetate 25 wt.
Melt index 57 g 10 min 190 c 2 16kg contains 200 800 ppm bht as inhibitor 437220.
There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used.
Melting point density additive chemical composition melt index hardness.
Chemicalbook provide 24937 78 8 ethylene vinyl acetate copolymer melting point boiling point density 24937 78 8 ethylene vinyl acetate copolymer cas chemical properties msds.
Melt index 19 g 10 min 190 c.
Gas chromatography gc 1 hplc 1 featured industry.
Product description 340502.
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Ethylene vinyl acetate eva also known as poly ethylene vinyl acetate peva is the copolymer of ethylene and vinyl acetate the weight percent of vinyl acetate usually varies from 10 to 40 with the remainder being ethylene.
