When the content of vinyl acetate in EVA is less than 20%, it can be used as a plastic. EVA has good low temperature resistance, its thermal decomposition temperature is low, about 230 ° C, with the increase of molecular weight, the softening point of EVA rises, the machinability and surface gloss of plastic parts decline, but the strength increases, impact toughness and environmental stress cracking resistance improves,EVA chemical resistance, oil resistance compared with PE(polyethylene),PVC slightly worse, and with vinegar With the increase of ethylene acid content, the change is more obvious. EVA compared to PE performance improvement, mainly elasticity, flexibility, gloss, permeability and other aspects, in addition, its resistance to environmental stress cracking has been improved, the receptivity of the filler increases, can be used to add more reinforcement filler method to avoid or reduce EVA mechanical properties than PE decline. EVA can also be modified to get new applications, and its modification can be mainly considered from two aspects: it is to use EVA as the backbone of other monomer grafting; the second is to partially alcoholize EVA.
Read More
English
русский
español
العربية
português
IPv6 network supported