Thermoplastic elastomer used for electric car charging pile cable and preparing method of thermoplastic elastomer

Abstract

The invention discloses a thermoplastic elastomer used for an electric car charging pile cable and a preparing method of the thermoplastic elastomer. The thermoplastic elastomer is prepared from, by weight, 15-30% of styrene elastomer, 20-45% of polyolefin resin, 2-5% of heat-resisting modifier, 5-20% of oil-resisting modifier, 10-30% of halogen-free flame retardant and 5-20% of softener. The thermoplastic elastomer used for the electric car charging pile cable has high elasticity and strength as well as excellent flame retardancy, and ageing resistance, water resistance, heat resistance, tear resistance and oil resistance are improved substantially. According to the thermoplastic elastomer used for the electric car charging pile cable, the preparation method is simple, high in yield and capable of effectively saving energy, and the thermoplastic elastomer can be machined through a common thermoplastic plastic forming machine, is particularly suitable for producing various electric car charging pile cables with the production hardness of 65-85, suitable for other application fields with high requirements for tear resistance and oil resistance and wide in application range and has high economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polymer materials, and in particular relates to a thermoplastic elastomer for electric vehicle charging pile cables and a preparation method thereof. Background technique [0002] Thermoplastic elastomer, or TPE, has both the processing properties of thermoplastics and the physical properties of vulcanized rubber. It can be described as an advantageous combination of the advantages of plastics and rubber. Thermoplastic elastomers are gradually being used in applications that were originally reserved for vulcanized rubber. In the past ten years, the rapid development of electronic appliances, communications and automobile industries has brought about the rapid development of thermoplastic elastomers. [0003] However, the existing thermoplastic elastomers have poor comprehensive properties including tear resistance, aging performance, oil resistance, heat resistance, water resistance, etc., ...

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Problems solved by technology

[0003] However, the existing thermoplastic elastomers have poor comprehensive properties including tear resistance, aging performance, oil resistance, heat resistance, water resistance, etc., and their applications are currently limited to fields that do not require high comprehensive performance. For applications such as electric vehicle charging piles that require high tear resistance and oil resistance, the lack of performance of existing thermoplastic elastomers limits their development in this field.

[0004] The Chinese patent application number 201410390759.5 published on December 3, 2014 discloses a modified TPE compound material for electric vehicle charging pile cables and its preparation method. The TPE compound material includes the following components by weight: thermoplastic elastic 50-70 parts of body, 10-20 parts of reinforcing agent, 25-55 parts of flame retardant, 0.2-0.5 parts of lubricant, 0.1-0.3 parts of coupling agent, 0.1-0.3 parts of antioxidant, the material is due to flame retardant The addition amount is large but the strength is low, and the oil resistance, heat resistance and scratch resistance are poor, which limits its application in electric vehicle charging pile cables

The cable material uses a polar resin with poor compatibility with the base material as an oil resistance modifier. Although a compatibilizer is added at the same time, the tear resistance and heat resistance of the material are still poor

[0006] The Chinese patent application number 201410829392.2 published on March 25, 2015 discloses a halogen-free flame-retardant cable material for electric vehicle charging cables and its preparation method. The cable material contains elastomer resin, flame retardant and flame-retardant synergistic Among them, the elastomer resin is thermoplastic polyurethane elastomer, the flame retardant is a blend of melamine urate and melamine phosphate, and the flame retardant synergist is hypophosphite. Specifically, the cable material contains: elastomer 95-100 parts of resin, 10-40 parts of flame retardant, 0.5-3 parts of flame-retardant synergist, 5-20 parts of plasticizer, 0.5-3 parts of composite antioxidant, 0.5-3 parts of anti-ultraviolet agent, light 0.5-3 parts of shielding agent, 1-4 parts of processing aid. The cable material uses polyurethane elastomer as the base material. Although it has the advantages of high strength, heat resistance, aging resistance and oil resistance, it has water resistance and acid resistance. Insufficient in poor alkalinity, difficult to process, and high in cost

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