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Natural silane cross-linked polyethylene cable material capable of resisting 110 DEG C

A natural cross-linking and polyethylene technology, applied in the direction of insulating cables, cables, circuits, etc., can solve problems such as limitations, and achieve the effects of fast cross-linking speed, widening application range, and excellent anti-aging performance

Inactive Publication Date: 2013-05-15
CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Australian cable manufacturers clearly require that silane XLPE insulated cables can reach a long-term safe use temperature of 110°C, and the insulating layer must pass through 150°C×168h aging, which puts forward higher requirements for the heat resistance level of insulating materials, while ordinary Silane cross-linked polyethylene insulating material is limited in its application under the condition of relatively high conductor operating temperature due to the defects in heat resistance.

Method used

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  • Natural silane cross-linked polyethylene cable material capable of resisting 110 DEG C

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Experimental program
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Effect test

Embodiment 1

[0019] It is composed of grafted A material component and catalytic B material component in a weight ratio of 95:5, and the grafted A material component is composed of the following raw materials in parts by weight: 50 parts of metallocene linear low density polyethylene, double 20 parts of peak medium-density polyethylene, 30 parts of low-density polyethylene, 0.3 parts of dicumyl peroxide as initiator, 0.45 parts of polycarbodiimide as anti-precrosslinking agent, and bis(3 , 5-di-tert-butylphenyl) pentaerythritol diphosphite and (1,2,2,6,6-pentamethylpiperidinol) methacrylate mixed in a weight ratio of 2:1 mixture 0.3 2 parts, silane coupling agent i.e. vinyltriethoxysilane 2 parts; The B material component of catalysis is made up of the raw material of following parts by weight: 100 parts of low-density polyethylene resins, organic sulfonic acid catalyst i.e. tetrapropyl naphthalene sulfonate 1.5 parts of acid, 1.8 parts of tris(2-methoxyphenyl) bismuth as organic bismuth c...

Embodiment 2

[0021] It is composed of grafted A material component and catalytic B material component in a weight ratio of 90:10, and the grafted A material component is composed of the following raw materials in parts by weight: 70 parts of metallocene linear low density polyethylene, double 30 parts of peak medium density polyethylene, 0.1 part of benzoyl tert-butyl peroxide and 0.3 part of dibenzoyl peroxide as initiator, 0.05 part of ethylene glycol diglycidyl ether and polyvinyl alcohol as anti-precrosslinking agent 0.05 parts, the first antioxidant is bis (3,5-di-tert-butylphenyl) pentaerythritol diphosphite and (1,2,2,6,6-pentamethylpiperidinol) methacrylate 0.6 parts of a 2:1 mixed mixture by weight, 1 part of vinyltrimethoxysilane as a silane coupling agent, 1 part of vinyltrimethoxysilane oligomer and vinyl tris(2-methoxyethoxy base) 2 parts of silane; the catalyzed B material component consists of the following raw materials in parts by weight: 100 parts of low density polyethyl...

Embodiment 3

[0023] It is composed of grafted A material component and catalyzed B material component at 80:20, and the grafted A material component is composed of the following raw materials in parts by weight: 50 parts of low density polyethylene, bimodal medium density polyethylene 50 parts, the initiator is 0.1 part of dibenzoyl peroxide, the anti-precrosslinking agent is 0.5 part of polyvinyl alcohol and the first antioxidant is bis (3,5-di-tert-butylphenyl) pentaerythritol diphosphite 0.46 parts of the mixture of ester and (1,2,2,6,6-pentamethylpiperidinol) methacrylate in a weight ratio of 2:1, the silane coupling agent is vinyltrimethoxysilane 1.5 parts of polymer; the B material component of catalysis is made of the following raw materials in parts by weight: 100 parts of low density polyethylene resin, 1 part of dodecylbenzenesulfonic acid catalyst, organic bismuth catalyst three ( 1 part of 2-methoxyphenyl) bismuth, the second antioxidant is 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6...

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Abstract

The invention discloses a natural silane cross-linked polyethylene cable material capable of resisting 110 DEG C, which belongs to the technical field of insulating polymer materials for wires and cables. The material comprises a grafted component A and a catalytic component B according to the weight rate of (80-95): (5-20). The grafted component A comprises the following raw materials in parts by weight: 100 parts of polyethylene composite resin, 1.5-4 parts of silane coupling agent, 0.1-0.4 part of initiator, 0.1-0.5 part of anti-precrosslinker and 0.2-0.6 part of first antioxidant. The catalytic component B comprises the following raw materials in parts by weight: 100 parts of the polyethylene composite resin, 1-3 parts of organic sulfo-acid catalyst, 1-3 parts of organic bismuth catalyst, 0.5-2 parts of second antioxidant, 0.5-2 parts of copper inhibitor and 1-4 parts of lubricant. The natural silane cross-linked polyethylene cable material disclosed by the invention has the following advantages that the silane grafting content of the cable material is higher, the cross-linking speed under the natural condition is faster, the ageing resistance is better, and the application range can be widened.

Description

technical field [0001] The invention belongs to the technical field of insulating polymer materials for wires and cables, and in particular relates to a silane natural cross-linked polyethylene cable material resistant to high temperatures of 110°C. Background technique [0002] Polyethylene has the advantages of good insulation, easy processing, low temperature resistance and aging resistance, and is a very excellent electrical insulation material. However, there are also disadvantages such as low temperature resistance level, poor creep resistance, poor stress crack resistance and poor chemical corrosion resistance. After cross-linking polyethylene, its molecular structure changes from a two-dimensional structure to a three-dimensional network structure, and its electrical properties, heat resistance, chemical resistance and physical strength can be greatly improved, broadening its application range . [0003] There are three main cross-linking methods of polyethylene, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08F255/02C08F230/08C08F4/54H01B3/44H01B7/29
Inventor 苏桂明张尔梅朱俊
Owner CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF
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