Chlorinated polyethylene (CPE) is an advanced, high-performance powder material obtained from the suspension chlorination of HDPE in the aqueous phase. As the degree of chlorination increases, the initially crystalline HDPE morphs into an amorphous elastomer. CPE is a saturated polymer, manifesting as a white, non-toxic, and tasteless powder. Boasting superior weather, ozone, chemical, and aging resistance, CPE also offers robust oil resistance, flame retardancy, and excellent color retention. It remains flexible even at temperatures as low as -30ºC and demonstrates superb compatibility with other polymer materials. With a high decomposition temperature, CPE releases HCL upon decomposition, which can further catalyze its dechlorination reaction.
Chlorinated polyethylene, derived from high-density polyethylene (HDPE) through a chlorination substitution reaction, is a versatile polymer material. It exists in two principal forms: resin chlorinated polyethylene (CPE) and elastic chlorinated polyethylene (CM). Beyond its standalone applications, CPE can be blended with various thermoplastic resins such as polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS, and even polyurethane (PU). In the rubber industry, CPE serves as a high-quality, high-performance special rubber, and can be integrated with ethylene propylene rubber (EPR), butyl rubber (IIR), nitrile butadiene rubber (NBR), and chlorosulfonated polyethylene (CSM), among others.
Since the late 1990s, the domestic market has seen a burgeoning demand for high-performance flame retardant rubber, fueled by the growth of the wire and cable industry and the automotive parts manufacturing sector. Rubber-type CPE has emerged as a premier special synthetic rubber, renowned for its exceptional overall properties, including heat resistance, oxygen and ozone aging resistance, and notable flame retardancy.
Chlorinated polyethylene resin is a cutting-edge synthetic material celebrated for its array of remarkable properties. It serves as an outstanding impact modifier for PVC plastics and as a synthetic rubber with impressive overall performance. CPE's applications are extensive, finding utility in cables, wires, hoses, tapes, rubber and plastic products, sealing materials, flame-retardant transport belts, waterproof rolls, films, and various profiles. When blended with polypropylene, high and low-pressure polyethylene, and ABS, CPE enhances these plastics' flame retardancy, aging resistance, and printability. As an ethylene, polyethylene, and 1.21-2 vinyl chloride random copolymer, CPE's molecular structure boasts saturation and a random distribution of polar chlorine atoms. Its superior physical and chemical properties make it indispensable in machinery, electric power, chemical, building materials, and mining industries. CPE's heat, ozone, weather, and aging resistance surpass most rubbers; its oil resistance outperforms nitrile (NBR) and neoprene (CR), while its aging resistance exceeds that of chlorosulfonated vinyl chloride (CSM). Additionally, it is non-toxic, flame retardant, and devoid of explosion risks, making it resilient against acids, alkalis, and salts.
Primary Uses: CPE is extensively employed in wire and cable applications, including coal mine cables and those meeting UL and VDE standards. It is also integral to hydraulic and automotive hoses, tapes, rubber plates, PVC profile pipe modifications, and the enhancement of magnetic materials and ABS.
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