When the material is polymerized, it is made by high-pressure bulk polymerization, pvc additives, adhesives and other processes.
If the content of vinyl acetate in eva material is above 30%, it is made by emulsion polymerization. If the content of this material is relatively low, high pressure bulk polymerization is used.
However, if the content of vinyl acetate in eva material is below 20%, it can be used as plastic. Moreover, eva has good low temperature resistance, and its thermal decomposition temperature is about 230 degrees, which is relatively low. Moreover, with the increase of its molecular weight, its softening point will also increase.
Features of Eva material:
1, eva material contains good water resistance, has closed pore structure, does not absorb moisture, and can bring good moisture resistance.
2.Eva material has strong corrosion resistance and can avoid chemical reaction with oil, acid, alkali, seawater and other substances. At the same time, it is non-toxic and tasteless, and is very safe to use.
3.Eva material has good resilience, tension resistance and toughness, which can play the role of shock absorption. In addition, because it is closed, the sound insulation function is also good.