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Middle and high pressure oil-resisting rubber semiconduction shielded cable material and preparation

A technology of oil-resistant rubber and shielded cables, applied in the direction of magnetic/electric field shielding, insulated cables, cables, etc., can solve the problems of high Mooney viscosity, difficulty in fully mixing, poor workmanship, etc., and achieve high tensile strength, excellent electrical conductivity, Effect of low insulation resistance

Inactive Publication Date: 2008-04-23
WUXI HUANCABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nitrile rubber has a high Mooney viscosity, so it is not necessary to add conductive materials when it is used for insulation or sheathing, and it is only filled with calcium carbonate or talcum powder with low Mooney viscosity, so it is easy to mix and has good workmanship; while it is used as a shielding material, it needs to be added A large number of conductive materials, and the Mooney viscosity of conductive materials is also high, which makes it difficult to fully mix the two, and the manufacturability is extremely poor, so there is no report before the present invention, using NBR or hydrogenated NBR as the semi-conductive shielding base material

Method used

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  • Middle and high pressure oil-resisting rubber semiconduction shielded cable material and preparation
  • Middle and high pressure oil-resisting rubber semiconduction shielded cable material and preparation

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Embodiment

[0040]Embodiment: embodiment proportioning sees table two. Preparation, weigh each material according to the ratio of the embodiment in Table 2, first masticate the base rubber on a small open mill, the temperature of the drum is less than 60°C, masticate twice, each time masticate and stretch the thin cylinder 8-10 times, two times The second masticating interval is more than 4 hours, and the plasticity value of the rubber after masticating is 0.4-0.5. Put it aside for more than 8 hours, then knead the masticated rubber on an open mill or knead it in an internal mixer for 1-2 minutes, add conductive carbon black, graphite powder, active agent (also can be added later), and Slowly add plasticizer, lubricant, anti-aging agent and knead for 4-5 minutes. The kneading temperature is less than 90°C. Finally, add vulcanizing agent and accelerator. After kneading for 1-1.5 minutes, pull it into a thickness of 1.00mm Tablets or 4mm3 cubic grains for later use.

[0041] Take a certai...

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Abstract

The improved oil resistant semi-conductive cable shielding material consists of butadiene-acrylonitrile rubber or hydrogenated butadiene-acrylonitrile rubber 100 weight portions, conducting carbon black 50-80 weight portions, graphite powder 15-30 weight portions, plasticizer 15-20 weight portions, dithio tetramethyl thiram and alphatic polysulfide 1.0-3.0 weight portions, dibenzothiazole disulfide and zinc diethyl dithio amino formate 1.0-2.0 weight portions, zinc oxide and stearic acid 8.0-10.0 weight portions. Compared with available technology, the present invention has the advantages of excellent conductivity, volume resistivity not greater than 50 ohm.cm, high tensile strength up to 18 MPa, high oil resistance and other advantages.

Description

technical field [0001] The invention relates to a medium and high voltage rubber-sheathed cable, a conductor and an oil-resistant rubber semi-conductive shielding cable material for insulation, in particular to an oil-resistant rubber semi-conductive shielding cable material that is easy to peel off. Background technique [0002] Medium and high voltage (for example, voltage level > 6000 volts) rubber-sheathed cables, conductors and insulating rubber semi-conductive shielding materials, and the basic rubber in the prior art all use EPDM or other non-polar rubbers. As described in Chinese patent 97115236.5 polyolefin semiconductive outer shielding cable material, its composition (weight): 10-30 parts of base resin EPDM rubber, 70-90 parts of modified resin neoprene rubber, 15-25 parts of acetylene carbon black parts, curing system 18-23 parts, antioxidant 1010<0.5 parts, stearic acid + white oil 4-6 parts, DOP 10-15 parts. Chinese patent 200410089024.5 describes the sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K5/47H01B7/17H05K9/00C08K3/04C08K5/40C08K5/09
Inventor 朱云春张林锐
Owner WUXI HUANCABLE
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