Chlorinated polyethylene (CPE) is a remarkable powder product derived from the suspension chlorination of HDPE in the water phase. As the degree of chlorination increases, crystalline HDPE transitions into an amorphous elastomer. This saturated polymer material appears as a white powder, non-toxic and tasteless, boasting excellent weather resistance, ozone resistance, chemical resistance, and aging resistance. With superb oil resistance, flame retardant, and coloring properties, it remains flexible even at -30ºC. CPE demonstrates outstanding compatibility with other polymer materials and features a high decomposition temperature. During decomposition, it releases HCL, which can further catalyze the dechlorination reaction of CPE.
Chlorinated polyethylene is a highly versatile polymer material, synthesized from high-density polyethylene (HDPE) via chlorination substitution reaction. It is categorized into resin chlorinated polyethylene (CPE) and elastic-type chlorinated polyethylene (CM), based on structure and application. Thermoplastic resins can be used alone or blended with polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS, and even polyurethane (PU). In the rubber industry, CPE functions as a high-performance, premium-quality special rubber. It can also be mixed with ethylene propylene rubber (EPR), butyl rubber (IIR), nitrile butadiene rubber (NBR), and chlorosulfonated polyethylene (CSM), among others.
Since the late 1990s, domestic demand for high-performance flame retardant rubber has surged, driven by the wire and cable industry and automotive parts manufacturing. This demand has fueled the growth of rubber-type CPE, a special synthetic rubber known for its excellent comprehensive properties, heat resistance, oxygen ozone aging resistance, and flame retardancy.
Chlorinated polyethylene resin is a groundbreaking synthetic material with a suite of exceptional properties. It serves as an excellent impact modifier for PVC plastic and as a synthetic rubber with superior performance characteristics. With a broad spectrum of applications, it is extensively used in cables, wires, hoses, tapes, rubber and plastic products, sealing materials, flame-retardant transport belts, waterproof rolls, films, and various profiles. CPE can also be blended with polypropylene, high and low-pressure polyethylene, and ABS to enhance flame retardancy, aging resistance, and printing capabilities. As an ethylene, polyethylene, and 1.21-2 vinyl chloride random copolymer, its molecular chain saturation and random distribution of polar chlorine atoms make it valuable for machinery, electric power, chemical, building materials, and mining industries. With superior heat, ozone, and weather resistance, it outperforms most rubbers in aging resistance and offers better oil resistance than nitrile (NBR) and neoprene (CR), surpassing the aging resistance of chlorosulfonated vinyl chloride (CSM). Additionally, it is non-toxic, flame retardant, and poses no explosion risk.
Primarily used in wire and cable manufacturing (including coal mine cables and wires conforming to UL and VDE standards), hydraulic hoses, automotive hoses, tapes, rubber plates, PVC profile pipe modifications, magnetic materials, and ABS modifications.
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