First of all, these three uses are different:
1, XPE uses: used to manufacture crawling mats, heat insulation and sound insulation materials, and car mats.
2. Use of 2.EVA: It can be used to make refrigerator pipes, gas pipes, civil engineering boards, containers and daily necessities, as well as packaging films, gaskets and medical devices, and can also be used as hot melt adhesives and cable insulation layers. At present, it is used in the solar cell industry to bond the cell sheet in the crystalline silicon cell with the surface photovoltaic glass and the back plate of the cell.
3. Use of 3.EPE: used for manufacturing electronic appliances, instruments and meters, etc.
Second, the characteristics of the three are different:
1 and XPE are characterized by excellent durability, light resistance and physical impact resistance. XPE itself is chemically stable, difficult to decompose, tasteless and elastic.
2. Features of 2.EVA: It is solid at room temperature, and when heated and melted to a certain extent, it becomes a liquid with a certain viscosity. EVA rubber-plastic products are a new type of environmentally-friendly plastic foaming material, which has the advantages of good cushioning, earthquake resistance, heat insulation, moisture resistance and chemical corrosion resistance, and is non-toxic and non-absorbent.
3.EPE has high elasticity and white appearance. Because it is a completely independent foam, it is light, flexible and elastic, and absorbs the impact force to disperse and buffer, which overcomes the shortcomings of ordinary styrofoam such as fragility, deformation and recovery. Epe has the characteristics of heat preservation, waterproof, moisture-proof, heat insulation, sound insulation, friction resistance, aging resistance and corrosion resistance.
Three different raw materials:
1, XPE raw materials: low-density polyethylene resin, crosslinking agent and foaming agent are continuously foamed at high temperature.
2. Raw materials of 2.EVA: ethylene-vinyl acetate polymer and its rubber-plastic foaming material.
3.EPE raw material: high foamed polyethylene products extruded with low density polyethylene (LDPE) as the main raw material.
Baidu encyclopedia -XPE
Baidu encyclopedia -eva (ethylene-vinyl acetate copolymer (eva))
Baidu encyclopedia -EPE