PVC and EVA have different characteristics. PVC has good electrical insulation, can be used as low-frequency insulation material and has good chemical stability. PVC, on the other hand, has poor heat resistance and is easy to degrade and fade after long-term heating, so its application range is narrow and it has certain requirements on the use temperature. EVA material, however, is solid at room temperature and will become liquid after melting at high temperature.
What is PVC material?
Polyvinyl chloride refers to polyvinyl chloride, which is polymerized by the principle of free radical polymerization under the action of light and heat on the basis of initiators such as peroxides and azo compounds. Vinyl chloride and vinyl chloride polymers are collectively referred to as vinyl chloride.
What is the EVA material?
In chemical industry and organic chemical industry, EVA refers to the polymer of ethylene and vinyl acetate and rubber foam made from them, which is used to make refrigerator pipes, gas pipes, building plates, containers and daily necessities.
What is the use of PVC?
1, PVC profile in the world, the market share of plastic doors and windows ranks first in the world, and PVC has a high market share in China, which is widely used in the construction industry.
2. Compared with PE and pp pipes, PVC pipes for PVC pipes have many kinds, good performance and broad application prospects, and occupy a decisive position in the market.
3.PVC film PVC and additives are mixed and plasticized, and then a transparent or colored film with a certain thickness is made by a three-roll or four-roll calendering process. After cutting, it can be processed into packaging bags, raincoats, tablecloths, curtains, inflatable toys and so on. The invention is suitable for greenhouses, plastic greenhouses, plastic films and the like.
4.PVC hard materials and plates are made by adding stabilizers, lubricants and fillers into PVC, and after mixing, they can be extruded into hard pipes, special-shaped pipes and corrugated pipes with different diameters. Hard plates with different thicknesses can be produced by hot pressing calendering sheets.
What's the use of EVA?
1, EVA material can be used to make household necessities such as refrigerator pipes, gas pipes, building plates and containers.
2.EVA can be used in packaging, films, gaskets, medical devices, hot melt adhesives, cable insulation layers, etc.
3. The hot melt adhesive with ethylene-vinyl acetate copolymer as the main body does not add any solvent, which will not cause any pollution to the environment and has high safety.