History of chlorinated polyethylene

Chlorinated polyethylene (CPE) is a polymer material produced from high-density polyethylene (HDPE) by chlorination substitution reaction.

According to the different structures and applications, chlorinated polyethylene can be divided into two categories: resin-based chlorinated polyethylene (CPE) and elastomer-based chlorinated polyethylene (CM). In the late 1990s, with the increasing domestic demand for high-performance flame retardant rubber, especially the development of the wire and cable industry and the automobile parts manufacturing industry, it drove the consumption of rubber-based CPE Demand. CPE is a kind of special synthetic rubber with excellent comprehensive performance, heat and ozone aging resistance, good flame retardancy, mainly used in wire and cable, hydraulic hose, automotive hose It is mainly used in wire and cable, hydraulic hose, automotive hose, adhesive tape, rubber sheet, PVC profile pipe modification, magnetic material, ABS modification and other fields.

During the preparation of chlorinated polyethylene, chlorine atoms are distributed randomly in the flexible PE molecular chain, which makes CPE products have a certain degree of elasticity as well as better room temperature and low temperature toughness. The polar and non-polar chain segments in the molecular chain structure make CPE products have good compatibility with all kinds of polar or non-polar plastics or rubbers. The saturated molecular chain structure makes CPE products have excellent heat resistance, cold resistance, weather resistance, ozone resistance, chemical resistance, aging resistance and electrical insulation. Insulation. The polar chlorine atoms in the molecule make CPE products have good oil resistance, flame retardancy and free coloring. According to the difference of CPE properties such as chlorine content and residual crystallinity, CPE products can be classified into plastic-modified CPE (A-type CPE), rubber-modified CPE (B-type CPE), ABS flame-retardant and impact-modified CPE (C-type CPE) and ABS flame-retardant and impact-modified CPE (C-type CPE). C type CPE) and highly chlorinated polyethylene (PE-HC), which are used in different fields.