What is Chlorinated Polyethylene (CPE) and where is it used?

Argonated polyethylene cpe low density polyethylene 2 silicone rubber blend cable insulation material is low density polyethylene (LDPE) and polydimethylsiloxane compatibilized by ethyl methacrylate (EMA) (PDMS) rubber blend is an effective heat-resistant cable insulation material. Various electrical properties, mechanical properties and thermal properties of the blend were studied. The results show that the blend can be used as a Thermal insulation material, compared with silicone rubber material, it has better cost performance.

For a long time, people have regarded silicone rubber as a special rubber for cables in a wide range of high and low temperatures. However, the expensive price of silicone rubber limits its application range.

LDPE is the plastic with the largest amount in industry. It has low cost and excellent electrical properties, so it is widely used as an insulating polymer in medium and low voltage wires and cables. LDPE is not only low in cost but also relatively Low dielectric constant and loss factor, high resistivity, and excellent mechanical properties below the ambient temperature of 90C, so most synthetic rubbers, such as styrene-butadiene rubber (SBR), butyl rubber (IR), neoprene(CR) and so on have lost part of the market share. Compared with the silicone rubber insulation material, the blend of polydimethylsiloxane (PDMS) and LDPE has the advantage of low cost in order to meet various grades, In addition to the special requirements of cables for power transmission, control and instruments, people have continuously developed various new polymer insulation materials. However, the mechanical properties and heat resistance of low-voltage electrical system (<10kV) materials are higher than
Electrical properties are more important.

For example; the cable insulation layer for furnace should have good stability of mechanical properties at high temperature. Similarly; the requirements for low-smoke, oil-resistant, and flame-retardant cables are also different. So the cable should The application occasion determines the requirements for the special performance of the cable. The oxidative degradation of the rubber and the formation of an oxide layer on the surface will increase the conductivity, because after the rubber is oxidized, a polarity is generated between the carbon black aggregates.

Groups (such as carboxyl) These groups provide a shorter pathway for electrons. There are several factors to consider when selecting a material for an application. As far as cable insulation is concerned; an important parameter is its Limits the ability of current to pass through the insulation layer. For direct current (dc), it is obvious that the use of high-resistance materials can reduce the thickness of the insulation layer; for alternating current (ac), the relative permittivity and loss are relatively low.