Flame-retardant thermoplastic rubber material for wires and cables and preparation method thereof

Abstract

The invention discloses a flame-retardant thermoplastic rubber material for wires and cables. The flame-retardant thermoplastic rubber material is prepared from the following raw materials in parts by weight: 10-300 parts of EPDM (Ethylene Propylene Diene Methylene), 40-160 parts of polypropylene, 30-100 parts of thermoplastic polyurethane elastomer, 5-15 parts of compatibilizer, 15-40 parts of organophosphorus ester, 5-10 parts of trimethyl phosphate, 5-20 parts of polyphenyl ether, 10-60 parts of inorganic filler, 3-6 parts of silane coupling agent, 0.2-10 parts of crosslinking agent, 1-5 parts of active zinc-oxide powder, 1-3 parts of antioxidant, 1-3 parts of ultraviolet absorbent, 20-100 parts of processing oil and 2-6 parts of lubricant. The preparation method of the organophosphorus ester comprises the following steps of: obtaining propenyl dimethyl phosphate after reaction of phosphorus oxychloride, allyl alcohol and methyl alcohol, carrying out olefin polymerization on the propenyl dimethyl phosphate, and obtaining the organophosphorus ester. The flame-retardant thermoplastic rubber material disclosed by the invention has the advantages of excellent flame retardance, high-temperature resistance and flexibility.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a flame-retardant thermoplastic rubber material for wires and cables and a preparation method thereof. Background technique [0002] In recent years, the use of thermoplastic rubber materials in the wire and cable industry has made great progress. Various types of thermoplastic rubber materials have been introduced on the market, but there are still various problems in thermoplastic rubber materials used in wire and cable. The application of polyphenylene ether It provides good flame retardancy and electrical insulation properties, but the disadvantages of polyphenylene ether, such as high viscosity, poor processability, and insufficient yellowing resistance, limit its application in the wire and cable industry. The patent publication number is CN102414274A. The Chinese patent application has published a method based on thermoplastic rubber materials and adding polypheny...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the use of thermoplastic rubber materials in the wire and cable industry has made great progress. Various types of thermoplastic rubber materials have been introduced on the market, but there are still various problems in thermoplastic rubber materials used in wire and cable. The application of polyphenylene ether Provides good flame retardancy and electrical insulation properties, but polyphenylene ether has limited its application in the wire and cable industry due to its shortcomings such as high viscosity, poor processability, and insufficient yellowing resistance

The patent publication number is CN102414274A. The Chinese patent application has published a method based on thermoplastic rubber materials and adding polyphenylene ether and flame retardants to prepare a wire and cable material. This method can obtain superior flame retardancy, but is more resistant to high temperature However, there are great restrictions on flame retardant materials