Halogen-free flame-retardant thermoplastic elastomer material for electric wires and cables and preparation method of material

Abstract

The invention discloses a halogen-free flame-retardant thermoplastic elastomer material for electric wires and cables. The thermoplastic elastomer material is prepared from, by weight, 20-35 parts of hydrogenated styrene block copolymer, 2-5 parts of polypropylene, 8-15 parts of POE thermoplastic elastomer, 25-40 parts of halogen-free flame retardant, 15-30 parts of polyphenyl ether, 5-15 parts of compatilizer, 2-10 parts of inorganic mineral, 8-15 parts of extending oil, 0.1-0.5 part of antioxidant, 0.1-0.3 part of lubricating agent, 0.1-0.3 part of cross-linking agent and 2-5 parts of styrene resin, wherein the halogen-free flame retardant is a mixture of organophosphate, melamine polyphosphate and polyphosphoester. The halogen-free flame-retardant thermoplastic elastomer material is resistant to high temperature, good in mechanical property, good in machinability, good in flame-retardant property, free of halogen, low in toxicity and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of wire and cable materials, in particular to a halogen-free flame-retardant thermoplastic elastomer material used for wires and cables and a preparation method thereof. Background technique [0002] As the problem of environmental pollution becomes more and more prominent, people are gradually paying attention to environmental protection, and the wire and cable industry is no exception, and it is bound to face the requirements for environmental protection. The environmental protection of the wire and cable industry is mainly the environmental protection of cable materials. At present, a large number of polymer chemical materials such as rubber, polyvinyl chloride, and polyethylene are used in the production of wire and cable, and a large amount of toxic and harmful gases are produced during the production process. In addition, the processing of rubber materials is complicated, and the leftovers cannot be re...

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Problems solved by technology

In addition, the processing of rubber materials is complicated, and the leftover materials cannot be recycled, which will easily cause secondary pollution

Among them, the advantage of PVC resin is that it has a cost advantage. However, the cable processed by this material is easy to crack at low temperature, easy to stick at high temperature, has poor aging resistance and is not environmentally friendly; the cable product processed by cross-linked polyethylene material has endowment In order to achieve good mechanical properties, environmental stress cracking resistance, chemical resistance and electrical properties, the existing problems are poor weathering resistance and insufficient processing performance; therefore, in addition to considering the performance advantages of the material, it is also necessary to Actively develop environment-friendly materials and produce environment-friendly wires and cables

[0003] In recent years, thermoplastic elastomers have made great progress. Various types of thermoplastic elastomers have been introduced on the market, but there are still various problems in thermoplastic elastomer materials used in wire and cable. The application of polyphenylene ether provides a good Flame retardant and electrical insulation properties, but the disadvantages of polyphenylene ether, such as high viscosity, poor processability, and insufficient yellowing resistance, limit its application in the wire and cable industry

The patent publication number is CN102414274A. The Chinese patent application has disclosed a method for preparing a wire and cable material based on thermoplastic elastomers and adding polyphenylene ether and flame retardants. This method can obtain superior flame retardancy, but it is more resistant to high temperature However, the flame retardant material has great limitations; the patent publication number is CN102414274A Chinese patent application publishes the method for preparing halogen-free flame retardant wire and cable materials, although polyphenylene ether is also added to improve the flame retardant effect, but due to the addition of crosslinked ethyl alcohol Propylene rubber is difficult to disperse in the whole system, and its mechanical properties are difficult to meet the requirements

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