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Low-temperature-resistant insulation cable sheath material

A technology for insulated cables and sheath materials, applied in the field of cable sheaths, can solve the problems of low temperature resistance of polyvinyl chloride, etc., and achieve the effects of good high-voltage resistance, reduced production costs, and superior mechanical properties

Inactive Publication Date: 2014-08-20
JINYUAN ELECTRIC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyvinyl chloride is a good material and is widely used in all walks of life. However, polyvinyl chloride is not resistant to low temperature, especially in winter in the north, which poses a great challenge to the wire and cable produced by polyvinyl chloride. How to prepare a cable sheath material with excellent cold resistance, high mechanical strength and good thermal stability has become a technical problem to be solved at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A low temperature resistant insulating cable sheath material, characterized in that it comprises: 45.5 parts of polyvinyl chloride, 22.3 parts of EPDM rubber and 26.5 parts of ethylene-vinyl acetate copolymer and put into a plastic mixer The first material was obtained by masticating for 1-3 minutes, and the masticating temperature was 74°C;

[0015] Based on polyvinyl chloride, 38wt% methacrylic acid-grafted high-density polyethylene and 24wt% bentonite are melt-blended in a rheometer to obtain the second material, wherein the methacrylic acid-grafted high-density polyethylene is as follows Process preparation: Send high-density polyethylene into the rheometer, then dissolve dicumyl peroxide in acrylic acid and send it into the rheometer for blending. The concentration of acrylic acid is 81.5%, and the blending temperature is 136 ℃, the blending time is 27min, wherein the weight ratio of high-density polyethylene and dicumyl peroxide is 51:2, and the weight molar ratio...

Embodiment 2

[0018] A low temperature resistant insulating cable sheath material, characterized in that it comprises: 55 parts of polyvinyl chloride, 16 parts of EPDM rubber and 28 parts of ethylene-vinyl acetate copolymer and put into a plastic mixer by weight The first material was obtained by masticating for 1 min, and the masticating temperature was 72°C;

[0019] Based on polyvinyl chloride, 38.5wt% methacrylic acid-grafted high-density polyethylene and 24wt% bentonite were melt-blended in a rheometer to obtain the second material, wherein methacrylic acid-grafted high-density polyethylene was used The preparation process is as follows: send high-density polyethylene into the rheometer, then dissolve dicumyl peroxide in acrylic acid and send it into the rheometer for blending. The concentration of acrylic acid is 77.45%, and the blending temperature is 135°C, the blending time is 28min, wherein the weight ratio of high-density polyethylene to dicumyl peroxide is 50.5:2.25, and the wei...

Embodiment 3

[0022] A low temperature resistant insulating cable sheath material, characterized in that it comprises: 51 parts of polyvinyl chloride, 18 parts of EPDM rubber and 27.51 parts of ethylene-vinyl acetate copolymer and put into a plastic mixer The first material was obtained by masticating for 2 minutes, and the masticating temperature was 72°C;

[0023] Based on polyvinyl chloride, 38.55wt% methacrylic acid-grafted high-density polyethylene and 24wt% bentonite were melt-blended in a rheometer to obtain the second material, wherein methacrylic acid-grafted high-density polyethylene was The following process is prepared: high-density polyethylene is sent into the rheometer, then dicumyl peroxide is dissolved in acrylic acid and sent into the rheometer for blending, the concentration of acrylic acid is 80.52%, and the blending temperature is 142°C, the blending time is 27min, wherein the weight ratio of high-density polyethylene to dicumyl peroxide is 53.2:2.15, and the weight mol...

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Abstract

A disclosed low-temperature-resistant insulation cable sheath material is prepared as follows: putting polyvinyl chloride, ethylene-propylene-diene monomer and ethylene-vinyl acetate copolymer in a plasticizing machine for plasticizing and obtaining a first material; performing fusion mixing on methacrylic acid-grafted high-density polyethylene and bentonite in a rheometer to obtain a second material; sending the first material and the second material to a mixer for uniform mixing, then heating to 80-85 DEG C, successively adding an anti-oxidant, dioctyl sebacate, N,N'-ethylene bis(stearamide), zinc stearate, microencapsulated red phosphorus and modified kaolin, heating to 125-135 DEG C, adding a coupling agent titanate and gamma-aminopropyltrimethoxysilane, continuing to stir and mix until no powder attaches to a hand when a hand touches the powder, and after mixing is finished, performing plastic extrusion and pelletizing to obtain the low-temperature-resistant insulation cable sheath material. The above low-temperature-resistant insulation cable sheath material is excellent in cold resistance, high in mechanical strength and thermal distortion temperature and good in thermal stability.

Description

technical field [0001] The invention relates to the technical field of cable sheaths, in particular to a low temperature resistant insulation cable sheath material. Background technique [0002] It is well known that the sheath of the cable plays a vital role in protecting the internal material from damage and maintaining its normal operation, no matter from the perspective of mechanical properties, thermal chemical resistance and disaster protection. In the specific application process, the cable sheath The cover must be resistant to sunlight, UV radiation, ozone aging, and chemical erosion, and can withstand severe weather conditions such as high temperature and severe cold, and at the same time, it can still guarantee or temporarily guarantee its normal operation in the case of accidental disasters. Polyvinyl chloride is a good material and is widely used in all walks of life. However, polyvinyl chloride is not resistant to low temperature, especially in winter in the nor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/08C08L23/16C08L51/06C08K13/06C08K9/00C08K9/10C08K3/34C08K3/02C08K5/11C08K5/20C08K5/098C08F255/02C08F220/06
Inventor 景宝玺
Owner JINYUAN ELECTRIC GRP
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