365bet娱乐

Name:Polyethylene

CAS:9002-88-4

惭贵:（颁2贬4）苍

MW:28.05316

EINECS:618-339-3

Melting point:92 °C

Boiling point:48-110 °C

density:0.962 g/mL at 25 °C

Fp:270 °C

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Appearance:solid

Purity:97%

Storage temp:2-8°C

Package:5g, 10g,100g,bulk package

Transportation: FeDex/DHL/Ocean shipping /Clients requirement

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Other name:

High density polyethylene wax;low density polyethylene wax;

POLYETHYLENE STANDARD 21'000, FOR;

POLYETHYLENE, LINEAR LOW DENSITY, MELT INDEX 5.5;

POLYETHYLENE, HIGH DENSITY, AVERAGE MW C A. 125,000;

POLYETHYLENE, AVERAGE MW CA. 4,000;

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Definition:

Polyethylene is a thermoplastic resin obtained by addition polymerization of ethylene. There are only two elements of carbon and hydrogen in the molecular structure. Non-toxic, with excellent low temperature resistance (minimum operating temperature can reach -100 ℃), good chemical stability, acid and alkali corrosion resistance (except oxidizing acid), good electrical insulation performance, but heat resistance and aging resistance Poor performance. Depending on the polymerization conditions, the molecular weight varies from ten thousand to several million. According to different polymerization methods, it can be divided into high-pressure polyethylene, medium-pressure polyethylene and low-pressure polyethylene. In terms of consumption, high-pressure polyethylene is the main one, and the consumption ratio of high-pressure polyethylene to medium and low-pressure polyethylene is 3:1 to 2:1.

Classification:

① Low-density polyethylene, referred to as LDPE, is usually produced by high-pressure method, so it is also called high-pressure polyethylene, with a density of 0.910-0.925g/cm3 and a melting point of 107-126°C. It has light weight, cold resistance, impact resistance, and chemical stability. , Excellent high-frequency insulation performance and processing performance and other advantages, can be blow molding, extrusion molding, injection molding. Used for packaging materials, pipes, cable insulation layers and sheaths, polyethylene film is widely used in seedling raising, mulch film, vegetable greenhouses and food packaging, and polyethylene sheets are good corrosion-resistant lining materials.
②High-density polyethylene, referred to as HDPE, is usually produced by low-pressure method, also known as low-pressure polyethylene, with a density of 0.941-0.965g/cm3 and a melting point of 132-135°C. It has high service temperature, hardness, mechanical strength and chemical resistance. and other performance. Blow molding, injection molding and extrusion can be used to make various bottles, cans, basins, barrels and other containers, as well as ropes, fishing nets, straps, wires, cable cladding, pipes, plates and special-shaped materials.
③Linear low-density polyethylene, referred to as LLDPE, density 0.92~0.93g365bet娱乐book/cm3, melting point 117-130°C, linear low-density polyethylene has good impact strength, elongation, and environmental stress cracking resistance. The puncture resistance is the best in polyethylene, especially suitable for the production of films, stretched products, etc. Adding appropriate amount of linear low density polyethylene and other resins into films, silks, tapes, pipes and other products can significantly improve the tensile strength and impact properties of plastic products.

365bet娱乐 properties:

Those with low molecular weight are generally colorless, odorless, tasteless, and non-toxic liquids. The high molecular weight pure product is milky white waxy solid powder. Low molecular weight is insoluble in water, slightly soluble in turpentine, petroleum ether, toluene, etc. High molecular weight is insoluble in known solvents at room temperature, but can swell when exposed to aliphatic hydrocarbons, aromatic hydrocarbons and halogenated hydrocarbons for a long time. It is slightly soluble in toluene, amyl acetate, etc. above 70°C.
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Application:

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1. Polyethylene can be processed into films, wire and cable sheaths, pipes, various hollow products, injection molding products, fibers, etc., which are widely used in agriculture, packaging, automobiles and other industries.

2.PE can be used to produce high-impact plastic profiles, rubber additives,

3. It can be used as packaging materials for industrial and agricultural products and food, cover film for crop seedling cultivation, anti-seepage film for channels and reservoirs, etc.

4. Used in the food industry, it can be used as a chewing aid for gummies.

5. Used to replace steel, and can also be used as special films, large containers, large conduits, plates and sintered materials, etc.

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