150°C irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin cable material for UL electronic wire and its preparation method

Abstract

The invention discloses a 150DEG C irradiation crosslinked low smoke halogen-free and flame retardant polyolefin cable material for UL electronic wires. The cable material is prepared from the following components: linear low density polyethylene, an ethylene-vinyl acetate copolymer, an ethylene-octene copolymer, polydimethyl-methylvinyl-methyl beta-cyanoethyl polysiloxane rubber, a maleic anhydride grafted ethylene-propylene-diene monomer copolymer, aluminum hydroxide, vinyl-tri(2-methoxyethoxy)silane, silicone oil, triallyl isocyanurate, modified nano titanium dioxide, 4, 4'-thiobis(6-tert-butyl-3-methylphenol), and distearyl thiodipropionate. The polyolefin cable material provided by the invention has the characteristics of excellent thermal oxidative aging resistance, high mechanical properties, low smoke, no halogen, flame retardancy, excellent processing performance and the like, and the cable prepared from the material has long service life, and is especially for high temperature resistant electronic wires and other products.

Description

technical field [0001] The invention relates to the technical field of halogen-free flame-retardant cable materials, in particular to a low-smoke halogen-free flame-retardant polyolefin cable material used for 150°C irradiation crosslinking for UL electronic wires. Background technique [0002] As an important component of electronic information products, electronic wires are known as the "blood vessels" and "nerves" of electronic and electrical products. Thanks to the rapid development of the electronic information industry, my country's electronic wire industry is also growing at an average annual rate of 45-50%, and is gradually developing in the direction of "thin, thin, safe, environmentally friendly, and high-speed transmission". This requires the material to have excellent processability, high mechanical properties, low-smoke, halogen-free flame retardancy, and excellent heat-oxidative aging resistance. [0003] At present, in the published patent documents in China,...

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Problems solved by technology

[0006] Because the related products used in high-temperature-resistant electronic wires not only require high strength, but also require the use of UL ventilated ovens for their aging resistance, which has extremely high performance requirements. None of the products in the above-mentioned published patents can meet their requirements, and they have not yet been industrialized in the domestic market. Production, mainly using imported raw materials, there are problems such as high cost

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