A kind of thermoplastic semi-conductive shielding material for conductor based on ethylene-vinyl acetate copolymer and preparation method thereof

A vinyl acetate copolymer and vinyl acetate copolymer technology are applied in the field of thermoplastic semiconductive shielding materials for conductors and their preparation, which can solve the problems of pre-crosslinking of shielding materials, inability to extrude, inability to match extrusion temperature and extrusion performance, etc. , to increase the processing temperature, solve the problem of easy water absorption, and prolong the storage time.

Active Publication Date: 2018-03-30
成都鑫成鹏高分子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a thermoplastic semiconductive shielding material for conductors based on ethylene-vinyl acetate copolymer, which solves the problem of extrusion temperature in the production process of the existing cross-linked semiconductive shielding material. The incompatibility with the extrusion performance leads to the pre-crosslinking phenomenon of the shielding material and the problem that it cannot be extruded

Method used

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  • A kind of thermoplastic semi-conductive shielding material for conductor based on ethylene-vinyl acetate copolymer and preparation method thereof
  • A kind of thermoplastic semi-conductive shielding material for conductor based on ethylene-vinyl acetate copolymer and preparation method thereof
  • A kind of thermoplastic semi-conductive shielding material for conductor based on ethylene-vinyl acetate copolymer and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] The thermoplastic semi-conductive shielding compound for conductors based on ethylene-vinyl acetate copolymer consists of the following components in parts by weight: 70 parts of ethylene-vinyl acetate copolymer, 20 parts of linear low-density polyethylene, 30 parts of carbon black, and 10 parts of lubricant , 0.5 parts of antioxidant and 1 part of filler; the lubricant is made up of the following components by weight: 5 parts of white oil and 1 part of polyethylene wax; the white oil consists of No. 100 white oil and No. 200 white oil according to the weight ratio It is formulated at a ratio of 1:1; the molecular weight of polyethylene wax is 4000-5000; the antioxidant is antioxidant 1010; the filler is nano-calcium carbonate.

[0028] The preparation method of the above-mentioned thermoplastic semiconductive shielding material for conductors based on ethylene-vinyl acetate copolymer is:

[0029] According to the above formula ratio, add ethylene-vinyl acetate copolyme...

Embodiment 2

[0033] The thermoplastic semi-conductive shielding material for conductors based on ethylene-vinyl acetate copolymer consists of the following components in parts by weight: 100 parts of ethylene-vinyl acetate copolymer, 30 parts of linear low-density polyethylene, 35 parts of carbon black, and 10 parts of lubricant , 0.5 parts of antioxidant and 1.5 parts of filler; lubricant is made up of the following components by weight: 8 parts of white oil and 2 parts of polyethylene wax; White oil is by weight ratio of No. 100 white oil and No. 200 white oil It is formulated at a ratio of 1:1; the molecular weight of polyethylene wax is 4000-5000; the antioxidant is 1010; the filler is nano-calcium carbonate.

[0034] The preparation method of the above-mentioned thermoplastic semiconductive shielding material for conductors based on ethylene-vinyl acetate copolymer is:

[0035] Add ethylene-vinyl acetate copolymer, linear low-density polyethylene, carbon black, lubricants, antioxidant...

Embodiment 3

[0039] The thermoplastic semi-conductive shielding compound for conductors based on ethylene-vinyl acetate copolymer consists of the following components in parts by weight: 150 parts of ethylene-vinyl acetate copolymer, 60 parts of linear low-density polyethylene, 50 parts of carbon black, and 15 parts of lubricant , 2 parts of antioxidants and 2 parts of fillers; the lubricant consists of the following components by weight: 10 parts of white oil and 3 parts of polyethylene wax; the white oil consists of No. 100 white oil and No. 200 white oil according to the weight ratio It is formulated at a ratio of 1:1; the molecular weight of polyethylene wax is 4000-5000; the antioxidant is antioxidant 1010; the filler is nano-calcium carbonate.

[0040] The preparation method of the above-mentioned thermoplastic semiconductive shielding material for conductors based on ethylene-vinyl acetate copolymer is:

[0041] Add ethylene-vinyl acetate copolymer, linear low-density polyethylene, ...

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Abstract

The invention discloses an ethylene-vinyl acetate copolymer based thermoplastic semiconductive shielding material for a conductor and a preparation method of the thermoplastic semiconductive shielding material. The thermoplastic semiconductive shielding material consists of the following components in parts by weight: 70-150 parts of ethylene-vinyl acetate copolymer, 20-60 parts of linear low density polyethylene, 30-50 parts of carbon black, 10-15 parts of a lubricant, 0.5-2 parts of an antioxygen and 1-2 parts of a filling agent. The thermoplastic semiconductive shielding material is formed by adopting the specific components according to the specific content, so that under the condition of not adopting a cross linking agent, the processing temperature is increased, the extrusion property is not influenced, and the product performance meets the requirements of JB / T10738-2007.

Description

technical field [0001] The invention relates to a thermoplastic semiconductive shielding material for conductors based on ethylene-vinyl acetate copolymer and a preparation method thereof. Background technique [0002] Peroxide cross-linked semi-conductive shielding material for cross-linked polyethylene insulated cable conductors has good shielding performance and excellent processing stability, and has been widely used in the conductor shielding layer of peroxide cross-linked insulated cables in China. Due to the different application environments, the shielding materials of cables have different performance requirements; for the production of 10KV silane cross-linked insulated overhead cables, if the extrusion process of double-layer co-extrusion is adopted, XLPE insulated cables The extrusion temperature of peroxide cross-linked semi-conductive shielding materials for conductors is controlled within 118°C, and the range is relatively narrow, but in fact, the extrusion te...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L23/08C08K13/02C08L23/06C08K3/04C08K3/26C08L91/00
CPCC08K2201/001C08K2201/011C08L23/0853C08L2205/02C08L2205/035C08L23/08C08L91/00C08L23/06C08K13/02C08K3/04C08K2003/265
Inventor张新华王国鹏吕增国
Owner成都鑫成鹏高分子科技股份有限公司