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Characteristics and Purpose of CPE

Chinese name: Chlorinated Polyethylene

English name:  Chlorinated Polyethylene

Structural formula:     [CH2-CHCl-CH2-CH2 ]n

English abbreviation: CPE or CM

Chlorinated polyethylene is a polymer material made from high-density polyethylene ( HDPE ) through chlorination substitution reaction. According to different structures and uses , chlorinated polyethylene can be divided into resin-based chlorinated polyethylene (CPE) and elastomer-based chlorinated polyethylene (CM) . 

In addition to being used alone, thermoplastic resins can also be blended with resins such as polyvinyl chloride ( PVC ), polyethylene ( PE ), polypropylene ( PP ), polystyrene ( PS ), ABS, and even polyurethane ( PU ). In the rubber industry, CPE can be used as a high-performance, high-quality special rubber, and can also be combined with ethylene propylene rubber ( EPR ), butyl rubber ( IIR ), nitrile rubber ( NBR ), chlorosulfonated polyethylene ( CSM ), etc. Other rubbers are blended for use.

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Characteristics of chlorinated polyethylene

 1) CPE is a saturated rubber, which has excellent heat-resistant oxygen aging, ozone aging, acid and alkali resistance, and chemical resistance.

 2 ) CPE has excellent oil resistance. Among them, it has excellent resistance to ASTM No. 1 oil and ASTM No. 2 oil, which is equivalent to NBR ; and it has excellent resistance to ASTM No. 3 oil, which is better than CR and is equivalent to CSM .

 3 ) CPE contains chlorine element, which has excellent flame-retardant properties, and has the characteristics of burning and anti-drip. It can be combined with antimony flame retardant, chlorinated paraffin, and Al(OH)3 in an appropriate ratio to obtain a flame retardant material with excellent flame retardancy and low cost.

 4 ) CPE is non-toxic, does not contain heavy metals and PAHS , and it fully meets environmental protection requirements.

 5 ) CPE has high filling performance and can be manufactured to meet various performance requirements. The processing performance of CPE is good, and the Mooney viscosity (ML121 1+4) is available in a variety of grades between 50 and 100 .


The main purpose

20 Century 90 end of the decade, domestic demand for high-performance flame-retardant rubber growing, especially wire and cable industry, the development of auto parts manufacturing industry, led to the rubber type CPE consumer demand. Rubber CPE is a special synthetic rubber with excellent comprehensive performance, heat-resistant oxygen ozone aging, and good flame retardancy.

Mainly used in: wire and cable (cables for coal mines, wires specified in UL and VDE standards), hydraulic hoses, automotive hoses, adhesive tapes, rubber sheets, PVC profile pipe modification, magnetic materials, ABS modification, etc.

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