SEBS thermoplastic elastomer cable insulation material and preparation method thereof

Abstract

The invention discloses an SEBS thermoplastic elastomer cable insulation material which comprises the following components in parts by weight: 100 parts of SEBS resin, 50 to 150 parts of rubber filling oil, 10 to 50 parts of grafting modified SEBS, 50 to 80 parts of polypropylene, 15 to 30 parts of polyolefin elastomer, 100 to 200 parts of mineral filler, 2 to 5 parts of lubricant, 2 to 4 parts of anti-aging agent and 1.8 to 3 parts of copper ion inhibitor. The invention also provides a preparation method of the SEBS thermoplastic elastomer cable insulation material, which comprises the following steps: raw material weighing, mixing and granulation. The SEBS thermoplastic elastomer cable insulation material has excellent electrical insulation performance as well as good mechanical performance and aging resistant performance, is a novel material capable of substituting soft vulcanized rubber, is used for soft cable insulation layer production, realizes the full 'vulcanization-free' of soft cable production, and is characterized by 'safety, environment protection, energy saving' and the like.

Description

technical field [0001] The invention relates to a cable insulating material and a preparation method thereof, in particular to a cable insulating material with SEBS thermoplastic elastomer as a base material and a preparation method thereof. Background technique [0002] Rubber cables are a very important category of wires and cables, mainly including: field wires and cables, industrial wires and cables for detection and mining, flexible rubber cables for mobile, electric welding machine cables, flexible cables for submersible motors, elevator cables, and electric locomotives. Cables, marine cables, rubber insulated control cables, rubber insulated power cables, rubber insulated fixed laying cables, etc. The total annual output value of my country's rubber cable industry is about 15 billion yuan, and more than 250,000 tons of mixed rubber are used, with a value of 4 to 5 billion yuan. [0003] The production of rubber cables faces the following main problems: [0004] 1. I...

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Problems solved by technology

[0004] 1. Inherent weaknesses in rubber mixing and processing: ① A large amount of reinforcing agents such as carbon black and white carbon black are used in the mixing process, which will cause serious dust pollution; without reinforcing agents, the strength of the mixed rubber will not meet the requirements , or even fail to produce qualified products; ②The rubber mixing equipment system is huge, the production process is complicated, the energy consumption is large, and the noise pollution is serious; ③High temperature (140~180°C) mixing and vulcanization process escapes a large amount of mist and smoke, which affects the operation The physical and mental health of personnel is harmful to the environment; ④ It is difficult to recycle used waste rubber and leftover materials, and they cannot be decomposed naturally, forming a major social hazard; ⑤ It is difficult to realize complete mechanization and automation of the process

[0005] 2. Problems in the production process of rubber cables: ① As a key process, the vulcanization process needs to be carried out through high-temperature and high-pressure media in vulcanization pipes or vulcanization tanks. High safety production requirements; ②The storage time of the mixed rubber is short, it is easy to scorch, and it fluctuates with the temperature change, which is difficult to master; Cable manufacturers are unable to produce

It can be used in the production of various flexible electric wires; however, the current production cost is high, the degree of crosslinking is difficult to control, the leftover materials cannot be recycled, and there are few domestically produced products, and EPDM, one of the main raw materials, mainly relies on imports

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