Chlorinated polyethylene (CPE) is a premium powder derived from the suspension chlorination of HDPE in the water phase. As the degree of chlorination increases, the crystalline HDPE transforms into an amorphous elastomer. This saturated polymer material, which appears as a non-toxic, tasteless, white powder, boasts exceptional weather, ozone, chemical, and aging resistance. Additionally, it features impressive oil resistance, flame retardancy, and coloring properties. Known for its remarkable toughness, remaining flexible at temperatures as low as -30ºC, CPE also offers excellent compatibility with other polymer materials. Its high decomposition temperature leads to the release of HCL, which can further catalyze the dechlorination reaction of CPE.
Chlorinated polyethylene (CPE) is a versatile polymer material produced from the chlorination substitution reaction of high-density polyethylene (HDPE). It is categorized into resin chlorinated polyethylene (CPE) and elastic type chlorinated polyethylene (CM) based on structure and application. Beyond its standalone use, CPE can be blended with thermoplastic resins such as PVC, PE, PP, PS, ABS, and even PU. In the rubber industry, CPE serves as a high-performance, high-quality special rubber, and can be blended with various other rubbers including ethylene propylene rubber (EPR), butyl rubber (IIR), nitrile butadiene rubber (NBR), and chlorosulfonated polyethylene (CSM).
By the late 1990s, the domestic demand for high-performance flame-retardant rubber surged, driven by the growth of the wire and cable industry and the auto parts manufacturing sector. This increased demand significantly boosted the consumption of rubber-type CPE. Renowned for its excellent comprehensive properties, rubber-type CPE offers superior oxygen ozone aging resistance and outstanding flame retardancy, making it a highly sought-after material in various applications.
Chlorinated polyethylene resin is an innovative synthetic material with a multitude of exceptional properties. It serves as an excellent impact modifier for PVC plastics and as a synthetic rubber with superior comprehensive performance. Its broad range of applications includes cables, wires, hoses, tape, rubber and plastic products, sealing materials, flame-retardant transport belts, waterproof rolls, films, and various profiles. Moreover, CPE can be blended with polypropylene, high and low-pressure polyethylene, and ABS to enhance the flame retardancy, aging resistance, and printing characteristics of these plastics. As a random copolymer of ethylene, polyethylene, and vinyl chloride, CPE's molecular chain saturation and randomly distributed polar chlorine atoms endow it with outstanding physical and chemical properties, widely utilized in the machinery, electric power, chemical, building materials, and mining industries. CPE's heat, ozone, and weather resistance, coupled with its superior oil resistance compared to nitrile (NBR) and neoprene (CR), and better aging resistance compared to chlorosulfonated vinyl chloride (CSM), make it an unparalleled choice. It also exhibits exceptional resistance to acids, alkalis, salts, and other corrosive substances, is non-toxic, flame-retardant, and poses no explosion risk.
Main Applications: CPE is primarily used in wire and cable (including coal mine cable, UL and VDE-standard wires), hydraulic hoses, automotive hoses, tape, rubber plates, PVC profile pipe modification, magnetic materials, and ABS modification.
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