A kind of tpu/ternary copolymerized nylon composite halogen-free flame-retardant cable material and preparation method thereof

Abstract

The invention relates to a TPU (thermoplastic polyurethane) / nylon terpolymer composite halogen-free flame-retardant cable material and a preparation method thereof. The cable material contains the following raw materials: 30-70% of thermoplastic polyurethane elastomer, 5-25% of a nylon terpolymer copolymer, 5-25% of a compatilizer, 1-10% of a hardness regulator, 10-30% of a flame retardant, 1-5% of a lubricating agent, 0-3% of an antioxidant, 0-3% of titanium dioxide, 0-3% of an ultraviolet-resistant agent and 0-2% of a hydrolysis resistant agent. The invention further discloses a preparationmethod of the cable material prepared from the previous materials. The TPU / nylon terpolymer composite halogen-free flame-retardant cable material disclosed by the invention has the characteristics ofbeing high in mechanical property, qualified in flame-retardant property, high in oil resistance, hydrolysis resistance and chemical liquid resistance, excellent in wear resistance, scratch resistanceand processability and capable of combining with excellent heat resistance of the nylon terpolymer copolymer, and the heat resistance of the overall cable material is improved. In addition, due to the addition of a hardness regulator, the hardness of the overall cable material can be maintained in a suitable range of 75-85A.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a TPU / ternary copolymerized nylon composite halogen-free flame-retardant cable material and a preparation method thereof. Background technique [0002] In the field of wire and cable materials based on elastomer materials, the more commonly used materials are TPE-S, TPU, and PVC. The use of PVC materials is completely prohibited in the European market, but there are still a large number of manufacturers in China who are still using them on a large scale because PVC materials can meet the standard performance at a lower price, but PVC materials emit a lot of black smoke when they burn. Other toxic and harmful substances that pollute the environment seriously affect the ecological environment. Therefore, the use of PVC materials should decrease in the future. TPE-S is also a commonly used elastomer material. Cable materials made of oil-filled SEBS and PP are widely used in...

AI Technical Summary

Problems solved by technology

The use of PVC materials is completely prohibited in the European market, but there are still a large number of manufacturers in China who are still using them on a large scale because PVC materials can meet the standard performance at a lower price, but PVC materials emit a lot of black smoke when they burn. Other toxic and harmful substances that pollute the environment seriously affect the ecological environment, so the use of PVC materials should decrease in the future

TPE-S is also a commonly used elastomer material. Cable materials made of oil-filled SEBS and PP are widely used in consumer data cables, earphone cables and electric vehicle charging pile cables, but according to cable manufacturers feedback It is prone to cracking problems during use and affects the service life, and its oil resistance is not strong, resulting in a decrease in the overall cable service life

Ordinary TPU materials are limited in many fields due to their poor flame retardancy and heat resistance, and difficult to control the processing technology.

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