Flame-retardant thermosetting nitrile/polyvinyl chloride (PVC) rubber for wires and cables

Abstract

The invention discloses a flame-retardant thermosetting nitrile / polyvinyl chloride (PVC) rubber for wires and cables, which is characterized by comprising the following raw materials in parts by weight: 50-70 parts of nitrile rubber powder, 30-50 parts of PVC resin powder, 2-3 parts of vulcanizing agent, 2.5-4.5 parts of accelerant, 4-6 parts of zinc oxide, 2-3 parts of stearic acid, 1-3 parts of coumarone resin, 2-4 parts of anti-aging agent, 20-40 parts of chlorinated paraffin wax, 7-10 parts of antimony trioxide, 4-6 parts of zinc borate, 50-70 parts of aluminum hydroxide and 40-70 parts of carbon black. After exceeding a certain temperature, the flame-retardant thermosetting nitrile / PVC rubber disclosed by the invention can only be cured and charred, but can remain a certain insulating property; the strength, elongation and flame retardance of the flame-retardant thermosetting nitrile / PVC rubber are better than those of common rubber and thermoplastic nitrile / PVC rubber; and the flame-retardant thermosetting nitrile / PVC rubber also has the advantages of oil resistance, wear resistance and softness in the common rubber and thermoplastic nitrile / PVC rubber.

Description

technical field [0001] The invention relates to the technical field of rubber formulations for wires and cables, in particular to a flame-retardant thermosetting nitrile polyvinyl chloride rubber for wires and cables. Background technique [0002] Wire and cable have industrial development and undeniable products in people's lives. There are different requirements in different application occasions. The rubber formulas currently used are mainly natural butadiene rubber formulas, EPDM rubber formulas, and chlorinated polyethylene / chlorosulfonated polyethylene formulas. With the development of industry, these rubber formulations can no longer meet the requirements of some special occasions, such as high flame retardancy, high strength, high oil resistance, high tear resistance, high flexibility and other properties. In order to meet the new requirements, some raw material manufacturers have developed thermoplastic nitrile polyvinyl chloride rubber materials, but this rubber i...

AI Technical Summary

Problems solved by technology

With the development of industry, these rubber formulations can no longer meet the requirements of some special occasions, such as high flame retardancy, high strength, high oil resistance, high tear resistance, high flexibility and other properties

In order to meet the new requirements, some raw material manufacturers have developed thermoplastic nitrile polyvinyl chloride rubber materials, but this rubber is a thermoplastic material, and it will melt and lose its insulating properties when it exceeds a certain temperature.

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