A low-smoke halogen-free silane naturally crosslinked polyolefin cable material and its preparation method

Abstract

The invention disclose a low-smoke halogen-free silicane natural cross-linked polyolefin cable material, which is prepared from the following raw materials in parts by weight: 20-40 parts of linear low-density polyethylene, 10-20 parts of high-density polyethylene, 20-40 parts of polyethylene octylene elastomer, 10-20 parts of ethylene-vinyl acetate copolymer, 10-15 parts of PVC (polyvinyl chloride) paste resin, 2-3 parts of dilauryl thiodipropionate, 1-2 parts of dibutyltin laurate maleate, 20-25 parts of aluminum hypophosphite, 1-2 parts of melamine pyrophosphate, 10-15 parts of magnesium hydroxide, 5-10 parts of zinc borate, 1-3 parts of di(3, 5-tert-butyl-4-hydroxyl phenyl) thioether, 2-4 parts of polyethylene wax, 1-2 parts of polytetrafluoroethylene, 5-10 parts of modification filler, 3-5 parts of vinyltris(2-methoxyethoxy)silane, 1-2 parts of N-salicyloylamino-phthalimide and 1-3 parts of dibenzoyl peroxide. In comparison with the normal low-smoke halogen-free polyolefin cable material, the low-smoke halogen-free silicane natural cross-linked polyolefin cable material has the advantages that temperature resistance level of products is improved, mechanical property is improved, and the problem that the normal low-smoke halogen-free polyolefin cable material is easy to crack is eliminated.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a low-smoke halogen-free silane naturally crosslinked polyolefin cable material and a preparation method thereof. Background technique [0002] Wire and cable are indispensable and important materials in industrial and agricultural production and modern life. my country is the world's largest producer of wire and cable. The wire and cable industry occupies a very important position in my country's national economy. However, at present, the market The cable material is not resistant to high temperature and aging, and the material turns yellow and becomes brittle after the aging test. There are more and more fires caused by aging wires. How to reduce the incidence of fire and the death rate in the event of fire, low smoke, halogen-free, flame retardant, and environmental protection have also become the development direction of the wire and cable industry. Among them, the demand for h...

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Problems solved by technology

Among them, the demand for halogen-free, low-smoke, low-smoke, halogen-free silane naturally cross-linked polyolefin cable materials is increasing. A large amount of acetylene carbon black or acetylene carbon black is added to the material to achieve the flame retardant effect. However, the addition of a large amount of inorganic materials affects the physical and mechanical properties and processing of the cable material.

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