Polyethylene (PE) is a kind of thermoplastic resin which is made by polymerization of ethylene. In industry, it also includes copolymers of ethylene with small amounts of alpha-olefin. Polyethylene is odorless, non-toxic, feel like wax, has excellent low temperature resistance (the lowest temperature can reach -100 ~ -70 ° C) , good chemical stability, can withstand most of the acid and alkali corrosion.
PE material has the advantages of strong corrosion resistance, hard material, light weight, the disadvantage is poor transparency, the use of petroleum resources processing, environmental damage, not easy to degrade.
Advantages of PE materials:
Good waterproof performance: PE material has good waterproof performance, water vapor, liquid water and moisture are very strong barrier, so often used in the production of various waterproof products.
Light High Strength: PE material is a very light material, but also has high strength and wear resistance, very suitable for making a variety of different uses of parts and components.
Strong corrosion resistance: PE material has high corrosion resistance, can well resist the erosion of chemical substances, so it is very suitable for chemical equipment manufacturing materials.
Recyclable: PE material can be recycled, to a certain extent, reduce the environmental burden, conducive to environmental protection.
1. Most plastics are corrosion resistant and do not react with acids or alkalis.
2. Plastics are cheap to make.
3. Durable, waterproof and light PE.
4. Easily molded into different shapes.
5, is a good insulator.
Plastics can be used to make fuel oil and fuel gas, which can reduce the consumption of crude oil.
Disadvantages of PE materials:
Poor combustibility: PE material will release harmful gas when it burns, which is harmful to environment and human health.
Easy Aging: PE materials will change with the environmental conditions and aging, reducing its service life.
Poor Heat Resistance: PE materials poor heat resistance, long time in high temperature environment deformation, so that its application in some specific fields are limited.
1, recycling waste plastics, classification is very difficult, and economically uneconomical;
2. Plastics are easy to burn and produce toxic gases when burned; for example, toluene is produced when polystyrene is burned. Small amounts of this substance can cause blindness, vomiting when inhaled, and toxic gases such as hydrogen chloride are also produced when PVC is burned, in addition to combustion, it is the high temperature environment, can lead to plastic decomposition of toxic ingredients, such as benzene ring.
3. PE is made from petroleum products. Petroleum resources are limited.