Ethylene vinyl acetate or eva is a copolymer of ethylene and vinyl acetate with a structure as shown below.
Eva ethylene vinyl acetate properties.
Ethylene vinyl acetate copolymer eva properties and applications.
There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used.
It shows good chemical resistance.
Eva shows good barrier and stretch properties.
Ethylene vinyl acetate terpolymers eva mah are random copolymers of ethylene vinyl acetate and maleic anhydride produced by high pressure polymerization in tubular reactors.
It is the basis of many hot melt adhesives when blended with a petroleum wax and a resin tackifier.
The properties are largely dependent on the molecular weight and the vinyl acetate content.
Ethylene vinyl acetate copolymer emulsion.
The va comonomer interferes with chain packing reducing crystallinity and thus lowering t m and improving transparency when compared with ldpe.
The properties of eva include two common variations.
For more specific values follow the links immediately below.
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.
Ethylene vinyl acetate properties ethylene vinyl acetate is a flexible and transparent thermoplastic.
Ethylene vinyl acetate offers good low temperature flexibility.
It is an extremely elastic and tough thermoplastic of excellent clarity and gloss and with little odor.
The graph bars on the material properties cards further below compare eva to.
Ethylene vinyl acetate terpolymer ethylene vinyl acetate maleic anhydride properties and applications.
1 the ethylene portion provides miscibility with ethylene copolymers while the vinyl acetate portion increases the.
Eva ethylene vinyl acetate this copolymer resin can be used in adhesives sealants and coatings.
Ethylene vinyl acetate eva is a random copolymer of ethylene and varying amounts of vinyl acetate va.
Eva is used in several applications thanks to the varied properties it possesses.
Ethylene copolymers top all thermoplastics middle and the entire database bottom.
Also it imparts plastic like properties that enable wax to compete effectively with high quality polymeric coatings.
Emblem in packaging technology 2012.
