Plastic self lubricating transmission rack pinion Gear Rack Products parameters 1. Polyethylene: Commonly used polyethylene can be divided into low density polyethylene (LDPE), high density polyethylene (HDPE) and linear low density polyethylene (LLDPE). Among the three, HDPE has better thermal, electrical and mechanical properties, while LDPE and LLDPE have better flexibility, impact properties, film-forming properties, etc. 2. Polypropylene: Relatively speaking, polypropylene has more varieties, more complex uses, and various fields. The varieties mainly include homopolypropylene (homopp), block copolymer polypropylene (copp) and random copolymer polypropylene (rapp) According to different uses, homopolymerization is mainly used in the fields of wire drawing, fiber, injection, BOPP film, etc., copolymer polypropylene is mainly used in household appliances injection parts,…
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