Soft type halogen-free flame-retardant cable material and preparation method thereof

Abstract

The invention provides a soft type halogen-free flame-retardant cable material prepared from the following raw materials in parts by weight: 20-40 parts of polyolefin resin, 8-10 parts of a thermoplastic elastomer, 5-6 parts of organosilicone mixed compound, 3-5 parts of hexamethylphosphoramide, 2-4 parts of a compatibilizer, 40-50 parts of magnesium hydroxide, 3-6 parts of zinc borate, 4-6 parts of stearic acid, 0.4-1.2 parts of a silane coupling agent KH560, 0.1-0.5 part of an antioxidant 168, 15-25 parts of aluminium hypophosphite, 1-2 parts of dimethylaminoethyl methacrylate, and 15-20 parts of a modified filler. The soft type halogen-free flame-retardant cable material adopts the low-hardness thermoplastic elastomer to be blended with the polyolefin resin, besides the good mechanical performance is kept, and the cable material softness degree is greatly improved so as to expand the use scope of the cable material.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a soft halogen-free flame-retardant 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 halogen-free low-smoke soft ha...

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Problems solved by technology

Among them, the demand for halogen-free low-smoke soft halogen-free flame-retardant cable materials is increasing. At present, most of the production of halogen-free low-smoke soft halogen-free flame-retardant cable materials is to add a large amount of acetylene carbon black to polyolefin substrates. or acetylene carbon black 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 cable materials

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