Long-service-life radiation crosslinking low-smoke halogen-free polyolefin cable material and preparation method thereof

Abstract

The invention relates to a long-service-life radiation crosslinking low-smoke halogen-free polyolefin cable material and a preparation method thereof. The cable material comprises, by weight, 55-85 parts of vinyl copolymer, 5-15 parts of polyvinyl resin, 10-15 parts of compatilizer, 100-130 parts of POSS modified flame retardant, 2-5 parts of silicone masterbatch, 1-2 parts of external lubricant,0.5-1 part of methyl silicone oil, 4-10 parts of melamine urate, 2-3 parts of antioxidant, 1-3 parts of TAIC crosslinking sensitizer, 0.5-1 part of cobalt naphthenate and 0.3-0.8 part of phenyl-N-tert-butyl nitroketone, wherein the antioxidant is at least one of tetra[c / -(3, 5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester, dilauryl thiodipropionate, tri(2, 4-di-tert-butyl phenyl phosphite ester, and the external lubricant is paraffin or PE wax. The polyolefin cable material can be widely applied in building home decoration power distribution wires and has service life of70 years and excellent antiaging performance and flame-retardant performance.

Description

technical field [0001] The invention relates to a long-life irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin cable material and a preparation method thereof, belonging to the field of insulating polymer materials. Background technique [0002] It has been nearly 40 years since my country's reform and opening up, and the wires used in a large number of buildings have begun to age. Coupled with the large application of household appliances, many household lines are prone to flammable accidents. According to incomplete statistics, domestic and foreign construction fields 85% of the fires in the world are caused by the aging of wires. The reason is that the service life of the wire sheath material cannot meet the requirements of use. For this reason, it is of great significance to develop a cable material that is flame-retardant and whose life is synchronized with the life of the house. [0003] First of all, the life requirements for cable materials are...

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Problems solved by technology

[0002] It has been nearly 40 years since my country's reform and opening up, and the wires used in a large number of buildings have begun to age. Coupled with the large application of household appliances, many household lines are prone to flammable accidents. According to incomplete statistics, domestic and foreign construction fields 85% of the fires in the world are caused by the aging of wires. The reason is that the service life of the wire sheath material cannot meet the requirements of use. Therefore, it is of great significance to develop a cable material that is flame-retardant and whose life length is synchronized with the life of the house.

[0003] First of all, the life requirements for cable materials are nuclear-grade cables for nuclear power plants and cables for high-speed rail locomotives. They need to meet the use requirements during the entire life of nuclear power plants and high-speed rail locomotives. At present, the only material that meets the life requirements of nuclear-grade cables is Linhai. A few manufacturers such as Yadong and Gaoxin Nuclear Materials are self-sufficient in foreign nuclear-grade cable materials and have never been sold in China. The cost of nuclear-grade cable materials is relatively high, and they do not have a competitive advantage for civil construction wires. Therefore, each Material manufacturers are all intensifying research and development efforts in long-life civil construction wires, striving for breakthroughs in material performance, service life and material cost, and occupying market advantages

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