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Amoy Coace Plastic Technology Co.,Ltd

Add:No.131 Xifu Road, Tong'an District, Xiamen City,China

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Ethylene-vinyl Acetate Copolymer
Mar 17, 2017

Ethylene-vinyl acetate copolymer

Nature of a thermoplastic polymer. Due to the vinyl side chains introduced by polar groups (CH3COO-) consists of short branched chain, changed the original crystalline state, more flexibility and elasticity make EVA more polyethylene, thermoplastic plastics is a kind of rubber-like elasticity. This appearance is white to light yellow powder or granular materials with a relative density of 0.92~0.95, refractive 1.480~1.510, crisp temperatures below-70 ℃, temperature 180~220℃ thermal decomposition temperature of 229~230℃. This product has good chemical stability and resistance to ageing, ozone resistance, but poor oil resistance. Nontoxic.

Usage and characteristics of this product is used as impact modifiers for PVC, polyvinyl chloride (PVC) compatibility, the effect with copolymer of ethylene vinyl acetate (VA) varies depending on the content. This product when low VA, poor compatibility with PVC, enhancement, opaque products, close to the properties of low density polyethylene; with higher content of VA, better compatibility with PVC copolymer, enhance effectiveness, product transparency increased, close to nature of rubber. VA content generally between 35%~45% is better. This product is also used in polyethylene, polycarbonate and modified as well as manufacture of hot melt adhesives, pressure-sensitive adhesive, adhesive tape, white LaTeX, and so on.