Sheath material for long-life radiation-resistant cable and preparation method thereof

A sheath material and radiation resistance technology, applied in the field of power cables, can solve the problem that the performance of the cable sheath material cannot meet the high requirements, and achieve excellent radiation resistance, strong acid and alkali resistance, and strong heat aging resistance. Effect

Active Publication Date: 2018-11-30
JIANGSUSNGSHANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The performance of the current cable sheath materials cannot meet the high requirements of the new technology for cable sheath materials, especially the sheath materials that are resistant to high doses of radiation to maintain the integrity of the technical problems are difficult to solve, but due to the rapid development of technology, There is an urgent need to solve this problem, which requires the advent of high-performance cable sheath materials that are resistant to high-dose radiation and have a long service life.

Method used

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  • Sheath material for long-life radiation-resistant cable and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A sheath material for a long-life radiation-resistant cable, the raw material formula components and the weight ratio of each component are:

[0039] 80 parts of ethylene vinyl acetate copolymer 40X (Mitsui-DuPont);

[0040] Maleic anhydride grafted EVA (Shanghai Jiuju 265B) 20 parts;

[0041] 155 parts of flame retardant, specifically including: composite flame retardant (melamine with a mass ratio of 1:2:3, microencapsulated red phosphorus RP-85 (Shanghai Zhuo Yu Chemical Co., Ltd.) and silicate (Langfang Qiyuan Refractory Energy-saving materials Co., Ltd., compounding of silicate paint) 5 parts, 100 parts of aluminum hydroxide and 50 parts of magnesium hydroxide;

[0042] 3 parts of antioxidants, including: 1 part of 2,2,4-trimethyl-1,2-dihydroquinoline polymer (Sumitomo, Japan) and tetrakis (3-(3,5-di-tert-butyl- 2 parts of 4-hydroxyphenyl) propionate) pentaerythritol ester;

[0043] 3 parts of stabilizer, including: 1.5 parts of 2-hydroxy-4-n-octyloxybenzophenon...

Embodiment 2

[0056] A sheath material for a long-life radiation-resistant cable, the raw material formula components and the weight ratio of each component are:

[0057] Ethylene vinyl acetate copolymer 450 (Mitsui-DuPont) 85 parts;

[0058] Maleic anhydride grafted EVA (Shanghai Jiuju 265B): 15 parts

[0059]165 parts of flame retardant, specifically including: composite flame retardant (melamine with a mass ratio of 1:3:2, microencapsulated red phosphorus RP-85 (Shanghai Zhuoyu Chemical Co., Ltd.) and silicate (Langfang Qiyuan Refractory Co., Ltd. Energy-saving materials Co., Ltd., compounding of silicate paint) 5 parts, 80 parts of aluminum hydroxide and 80 parts of magnesium hydroxide;

[0060] 3.5 parts of antioxidants, specifically including: 1 part of 2,2,4-trimethyl-1,2-dihydroquinoline polymer (Sumitomo, Japan) and 4,4 dicumyl diphenylamine (chemtura ) 2.5 copies;

[0061] 3 parts of stabilizer, including: 1.5 parts of 2-hydroxy-4-n-octyloxybenzophenone and 1.5 parts of 2-(2-hy...

Embodiment 3

[0070] A sheath material for a long-life radiation-resistant cable, the raw material formula components and the weight ratio of each component are:

[0071] 90 parts of ethylene vinyl acetate copolymer 450 (Mitsui-DuPont);

[0072] Maleic anhydride grafted EVA (Shanghai Jiuju 265B): 10 parts

[0073] 105 parts of flame retardant, specifically including: composite flame retardant (melamine with a mass ratio of 1:2:3, microencapsulated red phosphorus RP-85 (Shanghai Zhuoyu Chemical Co., Ltd.) and silicate (Langfang Qiyuan Refractory Energy-saving materials Co., Ltd., silicate coating) compound) 5 parts, aluminum hydroxide 40 parts and magnesium hydroxide: 60 parts;

[0074] 3 parts of antioxidants, specifically including: 1.5 parts of tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester and 4,4 dicumyl diphenylamine (Komol sub) 1.5 copies;

[0075] 3 parts of stabilizer, including: 1.5 parts of 2-hydroxy-4 n-octyloxybenzophenone and 2-(2-hydroxy-3,...

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Abstract

The invention discloses a long-life radiation-resistant sheath material for cables and a preparation method of the sheath material. The sheath material is prepared from ethylene-ethylic acid ethylene copolymer, maleic anhydride-grafted EVA, a flame retardant, an antioxidant, a stabilizer, a lubricant, a dispersing agent, a coupling agent, an anti-hydrolysis agent, a cross-linking agent and a crosslinking coagent by weight, wherein the flame retardant is a composition of at least two of a composite flame retardant and metal hydroxides. The sheath material is good in high dose irradiation resistance, high in thermal aging resistance, good in oil resistance, good in high temperature resistance, high in acid and alkali resistance, free of halogen, low in smoke and good in flame resistance, the service life reaches 60 years or above, and the high requirements on radiation occasions are met.

Description

technical field [0001] The invention relates to a sheath material for a long-life radiation-resistant cable and a preparation method thereof, belonging to the technical field of power cables. Background technique [0002] With the development of technology, the cable sheath material should not only have a long service life, but also have the anti-radiation performance of high-dose radiation resistance. Smoke-free halogen performance, oil resistance and other performance, put forward higher requirements. [0003] The cable sheath material is exposed to heat, oxygen and other environments during its thermal life, and the cable sheath material undergoes oxidation and aging reactions under the action of heat and oxygen during long-term operation, resulting in material degradation. At the same time, when the polymer is exposed to high-energy gamma and beta rays, the polymer absorbs the energy endowed by the radiation, undergoes an auto-oxidation reaction to generate free radical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L51/06C08K13/06C08K9/10C08K3/02C08K5/3492C08K3/34C08K5/14H01B7/17H01B7/295B29C47/92B29C48/92
CPCB29C48/92C08L23/0853C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/035C08L2312/06H01B7/17H01B7/295C08L51/06C08K13/06C08K9/10C08K2003/026C08K5/34922C08K3/34C08K5/14C08K5/34924
Inventor 赵力谈建伟
Owner JIANGSUSNGSHANG CABLE GROUP
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