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Nano-magnesia doped polyethylene direct-current cable composite with good compactness and preparation method of composite

A technology of nano-magnesium oxide and DC cables, applied in circuits, electrical components, plastic/resin/wax insulators, etc., can solve problems affecting the space charge characteristics, variable temperature volume resistivity and dielectric properties of composite materials, and reduce agglomeration Phenomenon, prevention of separation, good dispersibility effect

Inactive Publication Date: 2016-07-27
ANHUI CHUNHUI INSTR CABLE GROUP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] However, the 10wt%MgO / polyethylene (LDPE) composite material prepared by the masterbatch method in this article will absorb water in a humid environment and generate magnesium hydroxide, which will affect the space charge characteristics, variable temperature volume resistivity and dielectric properties of the composite material. , need to improve

Method used

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Embodiment Construction

[0017] A kind of dense nano-magnesia-doped polyethylene DC cable composite material, made of the following raw materials in parts by weight (kg): Benzolethanone 1, cobalt aluminate 0.6, triphenyl phosphate 2.3, montmorillonite 5 , water 15, nano-magnesium oxide 10, polyethylene 90, N,N'-dimethylformamide 30, 20 wt% sulfuric acid solution 200, perfluorooctanoic acid 100, nano-polytetrafluoroethylene powder 23, chloroform 70, methyl methacrylate Ester 2.4, potassium persulfate 0.1, non-ionic borate 1.5.

[0018] The preparation method of the dense nano magnesium oxide doped polyethylene DC cable composite material comprises the following steps:

[0019] (1) Add montmorillonite to water, heat to 70°C, add benzophenone, cobalt aluminate, and triphenyl phosphate, stir for 30 minutes, dry and pulverize, and pass through a 300-mesh sieve to obtain powder;

[0020] (2) Mix nano-magnesium oxide and perfluorooctanoic acid into N,N'-dimethylformamide, sonicate for 30 minutes, then add s...

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Abstract

The invention discloses a nano-magnesia doped polyethylene direct-current cable composite with good compactness. The composite is prepared from the following raw materials in parts by weight: 1-1.3 parts of benzoin, 0.6-0.8 parts of cobalt aluminate, 2.3-2.6 parts of triphenyl phosphate, 5-5.5 parts of montmorillonite, 15-18 parts of water, 10-11 parts of nano-magnesia, 90-91 parts of polyethylene, 30-35 parts of N, N-dimethyl formamide, 200-220 parts of a sulfuric acid solution with the concentration being 20wt%-22wt%, 100-120 parts of perfluorocaprylic acid, 23-27 parts of nano-polytetrafluoroethylene micro powder, 70-75 parts of chloroform, 2.4-2.5 parts of methyl methacrylate, 0.1-0.2 parts of potassium persulfate and 1.5-1.6 parts of nonionic borate. According to the composite, benzoin, cobalt aluminate and triphenyl phosphate are used for modifying montmorillonite, therefore, pores of the composite can be reduced, and the strength and the electrical performance are improved.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a dense nano-magnesia-doped polyethylene DC cable composite material and a preparation method thereof. Background technique [0002] Nano-doping has been widely used to improve the thermal conductivity, mechanical properties, electrical properties, etc. of materials. In recent decades, the performance of materials has been further improved from the initial micron particles, micronano particle composites to nanoparticle doping, and many new special functional materials have been developed. In the field of insulating materials, nano-doping to improve the electrical properties of materials has also been gradually paid attention to. At present, energy conservation has become an important part of social development. Traditional AC transmission has shortcomings such as large loss, complicated accessories, and high cost during power transmission, but DC transmission can make up...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L27/18C08K13/06C08K9/04C08K9/02C08K3/34C08K3/22C08K3/24C08K5/523C08K5/101C08K3/38H01B3/44
CPCC08K2201/011C08L23/06C08L2203/202H01B3/441C08L27/18C08K13/06C08K9/04C08K9/02C08K3/346C08K2003/222C08K3/24C08K5/523C08K5/101C08K2003/387
Inventor 沈必亮
Owner ANHUI CHUNHUI INSTR CABLE GROUP
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