Polyolefin insulated cable material used for rail transit vehicle and preparation method thereof

Abstract

The invention discloses polyolefin insulated cable material used for a rail transit vehicle and a preparation method thereof. The polyolefin insulated cable material is prepared by using the following raw materials by weight: 50-70 parts of high density polyethylene, 20-40 parts of ethylene-octylene copolymer, 15-25 parts of poly 4-methyl-1-pentene, 10-15 parts of dipropylene glycol dibenzoate, 4-6 parts of docosanamide, 3-5 parts of microcrystalline wax, 2-3 parts of zinc stearate, 1-2 parts of lanthanium stearate, 5-10 parts of epoxy linseed oil, 2-4 parts of isomaltitol, 3.5-4.5 parts of dibenzoyl methane, 15-20 parts of organic montmorillonite, 10-15 parts of brucite powder, 25-30 parts of nanometer spherical silica, 13-21 parts of hexabromocyclododecane, 11-19 parts of calcium phosphomolybdate, 10-15 parts of pentaerythritol polyphosphoric ester melamine, 2-4 parts of tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, 1-3 parts of dioctadecyl thiodipropionate and 10-15 parts of modified stone powder. The cable material provided by the invention has high mechanical strength, excellent mechanical properties, excellent weather resistance, ageing resistance, temperature tolerance, fatigue resistance and fire resistance, is durable in use, is safe and reliable, and can meet cable-related requirements of the rail transit vehicle.

Description

technical field [0001] The invention relates to a polyolefin insulated cable material for rail transit vehicles and a preparation method thereof, belonging to the field of cable materials. Background technique [0002] In recent years, with the rapid development of national rail transit, the control of motor train units and high-speed units has become more and more complex, and there are more and more electrical control equipment, the demand for cables will inevitably increase accordingly, and the performance requirements for cable materials will also increase. getting stricter. At present, polyolefin cable materials on the market have disadvantages such as poor mechanical properties, poor weather resistance, and poor aging resistance, which cannot meet the performance requirements of rail vehicle cables. Therefore, it is urgent to change the traditional cable material formula and develop a high mechanical strength. Good weather resistance , Good aging resistance polyolefin...

AI Technical Summary

Problems solved by technology

At present, polyolefin cable materials on the market have disadvantages such as poor mechanical properties, poor weather resistance, and poor aging resistance, which cannot meet the performance requirements of rail vehicle cables. Therefore, it is urgent to change the traditional cable material formula and develop a high mechanical strength. Good weather resistance , Good aging resistance polyolefin insulation cable material for rail transit vehicles to improve the safety performance of rail vehicle cables

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