Insulating flame-retardant ethylene-propylene-diene monomer hose composition and preparation method thereof

Abstract

The invention discloses an insulating flame-retardant ethylene-propylene-diene monomer hose composition which is characterized by comprising the following components in parts by weight: 100 parts of an EPDM (ethylene-propylene-diene monomer) 5890F, 2-6 parts of kaolin, 3-8 parts of zinc oxide, 1-3 parts of stearic acid, 2-5 parts of paraffin, 1-3 parts of an anti-aging agent MB, 50-70 parts of carbon black SP6400A, 130-190 parts of a flame retardant, 10-30 parts of paroline, 1-2 parts of sulfur, 10-15 parts of calcium oxide and 1.6-3 parts of an accelerant, wherein the accelerant comprises 0.2-0.5 part of an accelerant TT; and the flame retardant comprises 80-100 parts of aluminum hydroxide, 20-40 parts of zinc borate, 10-20 parts of antimonous oxide and 20-30 parts of decabromodiphenyl ethane. The invention has another purpose of providing a preparation method of the insulating flame-retardant ethylene-propylene-diene monomer hose composition, and on premise that electric insulation and insulation resistance of vulcanized rubber are met, mechanical strength requirements of rubber can be met.

Description

technical field [0001] The invention belongs to the technical field of rubber, in particular to an insulating and flame-retardant EPDM rubber hose composition and a preparation method thereof. Background technique [0002] The rubber hose is one of the rubber products used in the car wiring of the EMU, which is located inside and outside the car. The inside of the hose wears various wires. The hose mainly protects the internal cables. The protection can be divided into protection under the action of mechanical external force. In addition, it is also necessary to protect the internal cables from external heat sources. As we all know, three Ethylene-propylene-diene rubber (EPDM) is a copolymer of ethylene, propylene and a small amount of non-conjugated diene, because of its excellent electrical insulation, low density, high filling, low temperature resistance, heat resistance, ozone resistance and Properties such as weather aging have been widely used, accounting for about 7%...

AI Technical Summary

Problems solved by technology

The inside of the hose wears various wires. The hose mainly protects the internal cables. The protection can be divided into protection under the action of mechanical external force. In addition, it is also necessary to protect the internal cables from external heat sources. As we all know, three Ethylene-propylene-diene rubber (EPDM) is a copolymer of ethylene, propylene and a small amount of non-conjugated diene, because of its excellent electrical insulation, low density, high filling, low temperature resistance, heat resistance, ozone resistance and Weather aging and other properties have been widely used, accounting for about 7% of the world's total synthetic rubber consumption, ranking third, but poor flame retardant performance and poor insulation performance

[0003] We know that EPDM rubber is a non-self-reinforcing rubber, so if you want to make EPDM rubber achieve a certain mechanical strength, you must add carbon black for reinforcement. However, carbon black is a conductive material. The proportion of carbon black in EPDM rubber increases, the mechanical properties increase but the insulation properties decrease

[0004] At present, the flame retardant properties of rubber hose compositions usually use halogen flame retardants, which have the advantages of low dosage, high flame retardant efficiency and wide adaptability, but their serious disadvantages are that they generate a lot of smoke and are toxic and corrosive when burned. gas, very dangerous

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