Oil-resistant, high-temperature-resistant and flame-retardant thermoplastic elastomer cable material and preparation method thereof

Abstract

The invention relates to an oil-resistant, high-temperature-resistant and flame-retardant thermoplastic elastomer cable material and a preparation method thereof and belongs to the technical field of electric wires and cables and preparation thereof. The cable material is prepared from the following raw materials in parts by weight: 20-35 parts of a thermoplastic elastomer, 5-15 parts of an oil-resistant modifier, 5-10 parts of polypropylene, 1-5 parts of a compatilizer, 2-6 parts of extending oil, 15-25 parts of a flame retardant, 0.2-0.6 part of a lubricant and 0.4-0.8 part of an antioxidant. As raw materials are reasonably selected and proportioned, the mechanical property change rate of the material soaked in 902# oil for 168 hours at 60 DEG C is within 25%, the high-temperature-resistant deformation is 26-30% at 150 DEG C, and the flame-retardant performance reaches VO level, so that the stringent requirements of UL62 on the TPE material are fully satisfied. The preparation method provide is short in technical process, and the extruding temperature is within 100-200 DEG C. Compared with the prior art, the extruding temperature is remarkably reduced and an energy-saving effect is reflected.

Description

technical field [0001] The invention belongs to the technical field of wire and cable materials and their preparation, and in particular relates to an oil-resistant, high-temperature, flame-retardant thermoplastic elastomer cable material, and also relates to a preparation method thereof. Background technique [0002] While the market demand for wires and cables continues to grow, the physical and chemical (physical and chemical) properties of wires and cables are also becoming increasingly stringent, thus accelerating the research and development process of wire and cable materials, and new materials for wires and cables with excellent technical effects are continuously introduced. For example, thermoplastic elastomers have both the processability of plastics and the high elasticity of rubber and can be recycled and recycled, so they have generally been recognized and valued by the industry as a latecomer. [0003] At present, the thermoplastic elastomers used in the field ...

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Problems solved by technology

Another example is that CN103087512A provides "a modified elastomer of MX nylon and its preparation method", and the formula is calculated in parts by weight: 15-70 parts of MXPA, 5-15 parts of nylon toughening compatibilizer, 10-70 parts of SEBS, super 15-75 parts of low-density polyethylene, 1-15 parts of calcium stearate and 1-2 parts of white mineral oil. This patent application scheme can improve the modification of MX nylon due to the use of SEBS modified polyamide (PA). Elastomer has high temperature resistance and oil resistance, but its high processing temperature is not conducive to energy saving, and the obtained elastomer has a relatively high hardness (90A) and is not flame retardant. For details, please refer to the specification No. 0011 and 0022 of this patent application , 0026, 0030 and 0043

[0005] In view of the large demand for oil-resistant, high-temperature, flame-retardant thermoplastic elastomer cable materials in the market, such as some exported American standard power cords, and the rapid development of the new energy automobile industry in recent years, the corresponding American standard electric vehicle charging piles Cables put forward higher requirements on the mineral oil resistance, high temperature thermal deformation resistance and flame retardancy of the sheath material, and in view of the fact that the existing thermoplastic elastomer cable materials can not fully meet the requirements, so the choice of outstanding heat resistance SEBS and TPV are used as the main substrates, modified by adding polar materials with excellent oil resistance, and the problem of poor compatibility between the main substrate and the modified substrate is solved by adding a compatibilizer. It is of positive significance to select a suitable flame retardant to prepare an oil-resistant, high-temperature, flame-retardant thermoplastic elastomer material with excellent processing performance. The technical solution to be introduced below is produced under this background

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