PVC material is a kind of synthetic material, one of the most produced materials in the world, it cannot be used alone, it must be processed before it can be used. EVA material is a new type of environmentally friendly plastic foam material, which is suitable for making refrigerator ducts, gas pipes, civil construction plates, containers and daily necessities. There are different differences between these two materials, so in the next time, the editor of Honglihui will briefly talk about the difference between PVC material and EVA material.
PVC materials are divided into low-toxic and environmentally friendly materials and non-toxic and environmentally friendly materials. EVA materials are all environmentally friendly materials. The surface of EVA is soft, the tensile toughness is stronger than that of PVC, and the hand feels sticky. Both of these materials are white and transparent, and the look and feel of the EVA material is very similar to that of the PVC material, which should be distinguished.
PVC: The natural color is yellowish translucent, shiny. Transparency is better than polyethylene and polystyrene, but worse than polystyrene. Depending on the amount of additives, it can be divided into soft and hard polyvinyl chloride. The soft products are flexible and tough, and the hand feels sticky. The hardness of hard products is higher than that of low-density polyethylene. , And lower than polypropylene, whitening will occur at the inflection.
EVA: The performance of EVA has a great relationship with the content of vinyl acetate. When the content of VA increases, its resilience, flexibility, adhesion, transparency, solubility, stress crack resistance and impact performance will all increase. ; When the content of VA decreases, the rigidity, wear resistance and electrical insulation of EVA will increase.