Cable sheath rubber material and preparation method thereof

Abstract

The invention provides a cable sheath rubber material which comprises, by weight, 70-80 parts of ethylene-propylene-diene monomer rubber, 10-15 parts of butyl rubber, 16-22 parts of ethylene-vinyl acetate copolymer, 3-9 parts of vulcanizing agents, 1-3 parts of accelerators, 4-8 parts of paraffin wax, 8-16 parts of plasticizers, 2-6 parts of lubricating agents, 8-16 parts of carbon black, 5-10 parts of magnesium aluminum hydrotalcite powder and 4-8 parts of fillers. The plasticizers are mainly prepared from polyether silicone oil, butyl oleate, nano-silicon dioxide and silane coupling agents.A preparation method of the cable sheath rubber material includes the steps: placing raw materials into an internal mixer to mix the raw materials; transferring the mixed raw materials into an open mill to thin and roll the raw materials; placing thinned and rolled rubber reels into a three-roller page rolling machine to roll and cut the reels; opening cooling water in a cooling roller; enabling cut rubber sheets to penetrate the cooling roller and then penetrate an isolation powder tank to prepare rubber sheets. The cable sheath rubber material is good in cold resistance and softness and hasexcellent tensile strength and breaking elongation.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a cable sheath rubber material and a preparation method thereof. Background technique [0002] The wind power industry is developing in full swing, giving rise to the demand for cables for wind power generation. Due to the harsh environment of wind power generation, the service life of the wind turbines is long, and the cables are constantly rotating with the wind turbines, the performance requirements for the cables are also very high. In the past, they relied on imports and were expensive. [0003] In recent years, a number of domestic cable manufacturers have carried out research and development, and have produced wind power cables with low temperature resistance, UV resistance, oil resistance, and torsion resistance, which have become a new economic growth point for enterprises. In recent years, all walks of life are promoting safety and environmental protection, ...

AI Technical Summary

Problems solved by technology

In traditional wind energy cables, due to its excellent weather resistance, ozone resistance, chemical resistance and aging resistance, it has good oil resistance, flame retardancy and coloring performance, and good toughness (still flexible at -30°C), It has good compatibility with other polymer materials and high decomposition temperature. Chlorinated polyethylene is generally used as the sheath material of wind energy cables in China, and the shortcomings of this traditional cable sheath are also very obvious.

[0004] Due to the high chlorine content of chlorinated polyvinyl chloride, it will release high-concentration toxic fumes when burning, hindering sight, affecting escape and fire fighting, and even directly causing death. A large number of plasticizers lose their flame-retardant properties and even become flammable materials. The generation of toxic and harmful gases is even more serious. They have been eliminated in developed countries such as the United States and Japan.

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