| abstract |
The invention discloses a fire-resistant communication cable, comprising four copper-magnesium alloy conductors 1, the copper-magnesium alloy conductors 1 are covered with a polyethylene layer 2 to form wires 3, and the four wires 3 are twisted in pairs to form a first A stranded wire pair 41, a second stranded wire pair 42, a ceramized silicone rubber sheath layer 7 is coated on the outer surface of the polyvinyl chloride layer 6, and the ceramized silicone rubber sheath layer 7 is composed of the following weight components Components: 70~90 parts of methyl vinyl silicone rubber, 10~20 parts of ethylene methacrylic acid copolymer, 4~8 parts of vinyl trimethoxysilane, 12~15 parts of glass powder, 5~10 parts of boron nitride , 5~15 parts of magnesium oxide, 8~15 parts of fumed silica, 1~5 parts of isopropyl titanate, 0.5~2 parts of dicumyl peroxide, 1~2 parts of methylphenyl diethoxysilane 5 parts, 0.4-0.8 parts of 1,3-dimethyl-6-aminouracil, 0.5-1 part of manganese dioxide, 3-15 parts of 1,6-bis(diphenylphosphino)hexane, antioxidant 1 to 2 doses. The fire-resistant communication cable of the present invention further improves the insulation and flame retardancy of the ceramic silicon rubber sheath layer, thereby enhancing the insulation and flame retardancy of the cable. |