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Special cable sheath material for UHV power grid system

A technology for power grid systems and special cables, which is applied in the field of special cable sheath materials for UHV power grid systems and its preparation, can solve the problems of low volume resistance, acid and oil resistance, etc., and achieve high volume resistivity, excellent electrical properties, and flexibility Good results

Active Publication Date: 2018-01-26
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the defects of low volume resistance, acid and oil resistance of the existing heat-resistant sheath material in the prior art, and provide special cable sheath material for UHV power grid system and its preparation method

Method used

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  • Special cable sheath material for UHV power grid system

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Effect test

Embodiment 1

[0023] The special cable sheath material for UHV power grid system is made of the following raw materials by weight: 100 parts by weight of chlorosulfonated polyethylene, 8 parts of EPDM, 20 parts of ethylene and vinyl acetate copolymer, and acetyl tributyl citrate 10 parts of ester, 10 parts of calcined clay, 1 part of resorcinol bis(diphenyl phosphate), 1 part of pigment carbon black, 2 parts of aluminum hydroxide, 2 parts of heat stabilizer, 5 parts of trioctyl citrate, 0.1 part of camellia seed insulating oil, 1 part of antimony trioxide, 0.2 part of polyethylene wax, 10 parts of tributyl metacitrate, and 1 part of zinc naphthenate. The content of vinyl acetate in the copolymer of ethylene and vinyl acetate is 10 wt%. Heat stabilizers include pentaerythritol and ZnSt 2 And zinc chloride, pentaerythritol: ZnSt 2 : The weight ratio of zinc chloride is 5:1:2.

[0024] The preparation method includes the following steps:

[0025] 1) 20 parts by weight of acetyl tributyl citrate, ...

Embodiment 2

[0030] Special cable sheath material for UHV power grid system, made of the following raw materials by weight: 120 parts by weight of chlorosulfonated polyethylene, 12 parts for EPDM, 25 parts for ethylene and vinyl acetate copolymer, and tributyl acetyl citrate 20 parts of ester, 15 parts of calcined clay, 3 parts of resorcinol bis(diphenyl phosphate), 2 parts of pigment carbon black, 6 parts of aluminum hydroxide, 5 parts of heat stabilizer, 10 parts of trioctyl citrate, 0.2 parts of camellia seed insulating oil, 2 parts of antimony trioxide, 0.4 parts of polyethylene wax, 20 parts of tributyl metacitrate, and 2 parts of manganese naphthenate. The content of vinyl acetate in the copolymer of ethylene and vinyl acetate is 30 wt%. Heat stabilizers include pentaerythritol and ZnSt 2 And zinc chloride, pentaerythritol: ZnSt 2 : The weight ratio of zinc chloride is 5:2:3.

[0031] The preparation method includes the following steps:

[0032] 1) Combine acetyl tributyl citrate, resor...

Embodiment 3

[0037] The special cable sheath material for UHV power grid system is made of the following raw materials by weight: 110 parts by weight of chlorosulfonated polyethylene, 10 parts for EPDM, 22 parts for ethylene and vinyl acetate copolymer, and tributyl acetyl citrate 15 parts of ester, 12 parts of calcined clay, 2 parts of resorcinol bis(diphenyl phosphate), 1.5 parts of pigment carbon black, 4 parts of aluminum hydroxide, 4 parts of heat stabilizer, 8 parts of trioctyl citrate, 0.15 parts of camellia seed insulating oil, 1.5 parts of antimony trioxide, 0.3 parts of polyethylene wax, 15 parts of tributyl metacitrate, 1.5 parts of calcium naphthenate. The content of vinyl acetate in the copolymer of ethylene and vinyl acetate is 20 wt%. Heat stabilizers include pentaerythritol and ZnSt 2 And zinc chloride, pentaerythritol: ZnSt 2 : The weight ratio of zinc chloride is 5:1:3.

[0038] The preparation method includes the following steps:

[0039] 1) Combine acetyl tributyl citrate,...

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Abstract

The invention provides a cable sheath material special for an ultra-high voltage grid system. The cable sheath material is prepared from, by weight, 100-120 parts of chlorosulfonated polyethylene, 8-12 parts of ethylene-propylene-diene monomer, 20-25 parts of ethylene and ethylene-vinyl acetate copolymer, 10-20 parts of acetyl tributyl citrate, 10-15 parts of calcined clay, 1-3 parts of resorcinol bis(diphenyl phosphate), 1-2 parts of color black, 2-6 parts of inorganic hydroxide, 2-5 parts of heat stabilizer, 5-10 parts of trioctyl citrate, 0.1-0.2 part of an antioxidant, 1-2 parts of antimonous oxide, 0.2-0.4 part of polyethylene wax, 10-20 parts of tributyl citrate ester and 1-2 parts of naphthenic acid metal salt. The cable sheath material special for the ultra-high voltage grid system can be widely applied to an insulation outer sheath of an ultra-high voltage cable needing the special acid-resisting and oil-resisting environment.

Description

Technical field [0001] The invention relates to a cable sheath material and a preparation method, in particular to a special cable sheath material for an UHV power grid system and a preparation method thereof. Background technique [0002] The 1000kV AC UHV line has the advantages of large transmission capacity, low construction cost, low line loss, and is conducive to long-distance transmission. UHV transmission is especially suitable for the uneven distribution of my country's energy resources and load centers, so that resources can be optimally allocated . In addition, the use of 1000kV AC UHV to connect to the regional power grid can improve the grid structure, stagger the peaks, and serve as a backup for each other, effectively solving the current system safety problems of the current 500kV grid such as excessive short-circuit current and insufficient safety and stability, making the grid stronger. [0003] Compared with ultra-high voltage transmission lines, 1000kV AC UHV lin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/34C08L23/08C08L23/16C08L23/06C08L91/00C08K13/02C08K3/34C08K3/04C08K3/22C08K5/11C08K3/16
CPCC08K2201/014C08L23/34C08L2201/02C08L2203/202C08L2205/035C08L23/0853C08L23/16C08L23/06C08L91/00C08K13/02C08K3/346C08K3/04C08K2003/2227C08K3/2279C08K5/11C08K2003/168
Inventor 余晓东舒东波汤池杨峰
Owner STATE GRID CORP OF CHINA
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