A polyaddition reaction product of ethylene occurs-Iota

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Service > A polyaddition reaction product of ethylene occurs

A polyaddition reaction product of ethylene occurs

[-CH2-CH2-] n more than half of the total low-density polyethylene film made by the blown film, the film has good transparency and a certain tensile strength, is widely used for a variety of food, clothing, pharmaceutical , fertilizers, industrial packaging materials and agricultural film (see pictures). Extrusion method can also be processed into composite film used for packaging heavy. Since 1975, high-density polyethylene film has been developed, its high strength, low temperature, moisture, and good printability and workability. Maximum use is made of linear low-density polyethylene film, its strength, toughness superior to low-density polyethylene, puncture resistance and good rigidity, transparency is poor, although still slightly better than the high-density polyethylene . In addition, the polyethylene coating may also be extrusion coated on the paper, aluminum foil or other plastic film, made of polymer composites.

High strength hollow products of high density polyethylene, suitable for hollow products. Blow into the legal system usable bottles, barrels, tanks, tank and other containers, or casting method into tankers and other large tanks and tank containers.

Tube sheet extrusion method can produce polyethylene pipe, the higher the intensity of high-density polyethylene pipe, suitable for underground laying. The extruded sheet can be secondary processing. Foam can also be extrusion and injection foaming high-density polyethylene of low foam and materials for the platen (see construction of polymer materials).

China called Polyethylene fiber, generally using low-pressure polyethylene as raw material, made of synthetic fiber spinning. Polyethylene is mainly used for the production of fishing nets and ropes, or spun staple fiber batt after use as well as for industrial acid fabric. Has developed ultra-high-strength polyethylene fibers (strength up to 3 ~ 4GPa), can be used as bulletproof vests, automotive and marine operations with composite materials.

Sundry goods produced by injection molding sundries including daily sundries, artificial flowers, turnover box (see pictures), small containers, bicycles and tractors parts. Use high-density polyethylene manufacturing structure.

Polyethylene modified polyethylene modified varieties are mainly chlorinated polyethylene, chlorosulfonated polyethylene, cross-linked polyethylene and blends modified varieties.

Chlorinated polyethylene with a chlorine partial substitution of the hydrogen atoms of the polyethylene obtained by a random chloride. Chloride is light or peroxide initiator conducted mainly on the industrial production of aqueous suspension method. Since the molecular weight and its distribution of the raw material polyethylene, the degree of chlorination of different degree of branching, and post-chlorination, chlorine atom and the distribution of the residual crystallinity, from rubber-like to obtain a hard plastic-like chlorinated polyethylene. The main purpose is to make PVC modifiers to improve the impact resistance of PVC. Chlorinated polyethylene itself also as electrical insulation and floor materials.

Polyethylene, chlorosulfonated polyethylene, when the action of chlorine containing sulfur dioxide, a part of hydrogen atoms in the molecule is (-SO2Cl) substituted with a chlorine and a small amount of sulfonyl chloride groups, to give chlorosulfonated polyethylene. The main industrial method for the suspension. CSM ozone resistance, chemical resistance, oil resistance, heat resistance, light resistance, abrasion resistance and tensile strength is better, is a good overall performance elastomer can be used to produce food contact equipment parts.

Method using irradiation cross-linked polyethylene (X-rays, electron beam or ultraviolet irradiation) or chemical (peroxide or a silicone cross-linking) so that the linear polyethylene mesh or cross-linked polyethylene became the body. Wherein the silicone crosslinking process is simple, low operating costs, and molding and crosslinking step by step, should adopt blow molding and injection molding. XLPE heat resistance, resistance to environmental stress cracking resistance and mechanical properties than polyethylene has improved greatly, suitable for large pipes, cables and wires, and rotomolding products.

Blending the polyethylene and low density polyethylene linear low density polyethylene after blending, can be used for processing films and other products, product performance is better than low-density polyethylene. Blends of polyethylene and ethylene-propylene rubber can be prepared by a wide range of uses of the thermoplastic elastomer.

Metallocene polyethylene

MPE is a novel thermoplastic polyolefin 1990s the most important technical progress in industry, following the LLDPE production technology is an important innovation. Because it is the use of metallocene (MAO) as a polymerization catalyst produced polyethylene, and therefore, the performance of the polymerization with the conventional Ziegler-Natta catalyst is made of PE with significantly different. Metallocene catalysts for the synthesis of metallocene polyethylene excellent performance and unique applications, caused widespread concern in the market, many of the world's leading large petrochemical company invested enormous human and material resources to competing research and development, the polyolefin industry as a whole has become a popular plastics industry

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