Special butyronitrile PVC composite cable sheath for aerogenerator

Abstract

The invention belongs to the technical field of wire and cable sheaths, and relates to a special butyronitrile PVC composite cable sheath for an aerogenerator. The sheath is made from the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin; 10-15 parts of nitrile butadiene rubber; 50-60 parts of a plasticizer; 20-40 parts of active calcium carbonate; 6-7 parts of a stabilizer; 0.3-0.4 part of a lubricant; 0.9-3.0 parts of a filler and 0.2-0.6 part of an accelerator. The sheath has the advantages of ozone resistance, weather resistance and aging resistance, large breaking elongation change, high volume index and flow index, good stability and excellent cracking resistance, generally does not crack at the temperature of minus 50 DEG C , has high safety performance and prolongs service life cycle of cables.

Description

technical field [0001] The invention belongs to the technical field of wire and cable sheaths, in particular to a nitrile-butadiene-PVC composite sheath for a special cable for wind power generators. Background technique [0002] As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. Its reserves are huge. The global wind energy is about 2.74×109MW, of which the usable wind energy is 2×107MW, which is 10 times larger than the total amount of water energy that can be developed and utilized on the earth. China's wind energy reserves are large and widely distributed. The total wind energy reserves on land alone are about 3.226 billion kilowatts, of which the wind energy reserves that can be developed and utilized are about 253 million kilowatts, while the offshore wind energy reserves are about 750 million kilowatts, totaling about 1 billion kilowatts. It is about equivalent to the installation capacity of 50 Three G...

AI Technical Summary

Problems solved by technology

[0003] The wind power generation project is carried out in the open air, and the service life of the fan is required to be very long, and the cable is required to rotate frequently with the fan in a low temperature environment, which requires the cable sheath to have good stability and crack resistance under low temperature conditions. High safety performance, long service life of the cable, the material used in the sheath requires good softness, high temperature resistance and low temperature effect, etc. The ordinary nitrile PVC sheath material contains more inorganic materials, and the rubber content is higher. Less, resulting in smaller elongation at break and low capacity flow index, so that the ordinary nitrile PVC sheath material has poor crack resistance. Generally, there will be cracking under the condition of -25C, the stability is not good, and the safety performance is low. Low, so that the life cycle of the cable is short