Ethylene propylene diene monomer outer sheath for self-limiting electric tracing band

A technology of EPDM rubber and electric heating cable, applied in the rubber field, can solve the problems of heat transfer, hardness and wear resistance that cannot meet the demand, and achieve enhanced mechanical and thermal conductivity, excellent wear resistance, and increased density. big effect
CN105504540AInactive Publication Date: 2016-04-20崇夕山
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
崇夕山
Publication Date
2016-04-20
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention discloses an ethylene propylene diene monomer outer sheath for a self-limiting electric tracing band. The ethylene propylene diene monomer outer sheath is made of the following raw materials in parts by weight: 40-70 parts of ethylene propylene diene monomer, 16-28 parts of methyl phenyl vinyl silicone rubber, 15-32 parts of chloroprene rubber, 1-2.5 parts of sulfur, 4-4.5 parts of 2,5-dimethyl-2,5-di(butylperoxy)hexyne-3-hexine, 0.5-1.8 parts of isocyanuric acid triallyl ester, 0.5-1.5 parts of sodium bichromate, 60-85 parts of modified glass fiber, 10-20 parts of graphite powder, 5-15 parts of high abrasion furnace black, 10-20 parts of talc powder, 5-15 parts of kaolin, 10-20 parts of nanometer aluminum oxide, 1-2.5 parts of antioxidant AT-215, 1-3 parts of sodium lignin sulfonate, 1.2-1.8 parts of di-iso-decylphthalate, 1.2-1.8 parts of polyvinyl butyral, 1.2-1.8 parts of disproportionated rosin and 1.2-1.8 parts of zinc stearate. The ethylene propylene diene monomer outer sheath has high thermal conductivity, high hardness and superior abrasion resistance.
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Description

technical field

[0001] The invention relates to the technical field of rubber, in particular to an EPDM outer sheath for self-limiting electric heating cables. Background technique

[0002] Since the electric heating cable entered the application field in the 1970s, it has become the most common type of electric heating cable in the world today. It is widely used in heating roads, ramps, crosswalks, eaves and floors. Inside the self-regulating electric heating cable, PTC polymer material for heating is distributed between two conductive cores, and its exterior is composed of polymer inner sheath, metal shielding net and polymer outer sheath. At present, the outer polymer outer sheath used for self-limiting temperature heating cables in China still cannot meet the demand due to the limitation of the use environment, especially in the cold winter environment. , hardness and wear resistance can not meet the demand. Contents of the invention

[0003] The invention provides a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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