Electrical insulating resin material, electrical insulating material, and electric wire and cable using same

A technology of electrical insulating materials and resin materials, applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve problems such as insufficient product dispersion, melt fracture, and reduced mechanical strength

Inactive Publication Date: 2001-10-17
JAPAN POLYOLEFINS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersibility of the product obtained by the above method is not enough, resulting in disadvantages such as melt fracture, reduced mechanical strength, etc.

Method used

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  • Electrical insulating resin material, electrical insulating material, and electric wire and cable using same
  • Electrical insulating resin material, electrical insulating material, and electric wire and cable using same
  • Electrical insulating resin material, electrical insulating material, and electric wire and cable using same

Examples

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Effect test

example 1

[0232] A graft copolymer (C11) obtained by modifying an ethylene copolymer (A) with a functional group-containing monomer (M1). Specific examples thereof include maleic anhydride-modified ethylene copolymers (A).

example 2

[0233] Ethylene copolymer (A) and graft copolymer (C11) obtained by modifying ethylene copolymer (A) with functional group-containing monomer (M1), and / or using functional group-containing monomer (M1) A composition of a graft copolymer (C21) obtained by modifying another polyolefin (A'). Specific examples thereof include compositions of ethylene copolymer (A); maleic anhydride-modified ethylene copolymer (A), and / or maleic anhydride-modified low-density polyethylene.

[0234] A composition of another polyolefin (A') and a graft copolymer (C11) obtained by modifying an ethylene copolymer (A) with a functional group-containing monomer (M1). Specific examples thereof include compositions of low-density polyethylene and maleic anhydride-modified ethylene copolymer (A).

example 4

[0235] Ethylene copolymer (A) and other polyolefins (A'); and graft copolymer (C11) obtained by modifying ethylene copolymer (A) with functional group-containing monomer (M1) , and / or a composition of a graft copolymer (C21) obtained by modifying other polyolefin (A') with a functional group-containing monomer (M1). Specific examples thereof include ethylene copolymer (A); low-density polyethylene; maleic anhydride-modified ethylene copolymer (A), and / or compositions of maleic anhydride-modified low-density polyethylene.

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Abstract

An electrical insulating resin material characterized in that the rein component thereof which comprises an ethylene alpha -olefin copolymer satisfying specific parameters, such as 0.92 to 0.96 g / cm<3> in terms of density, 0.01 to 200 g / 10 minutes in terms of MFR, 1.0 to 5.0 in terms of molecular weight distribution (Mw / Mn), and only one (peak) in terms of the number of peaks observed in an elution temperature-eluted amount curve as measured by the temperature raising elution fractionation (TREF) method, further comprises a monomer unit selected from among a carbonyl or carbonyl-derivative group-containing monomer, a hydroxyl group-containing monomer, a nitro group-containing monomer, an aromatic ring-containing monomer and a compound or monomer containing two or more ethylenic groups; an electrical insulating material and an electric wire and cable using the same. The electrical insulating resin material suitable for use in an electrical insulating material for an electric wire and cable, since it exhibits excellent processability without detriment to mechanical strength and shows excellent electrical insulating characteristics both before and after crosslinking.

Description

technical field [0001] The present invention relates to a resin material for electrical insulating materials, which is characterized in that it contains an ethylene-α-olefin copolymer, which has excellent processability and heat resistance in addition to good mechanical strength and electrical insulation properties and electrical insulating materials and wires and cables prepared from the resin material. More specifically, the present invention relates to a resin material for electrical insulating materials, which has excellent electrical insulating properties, such as volume resistivity, space charge characteristics, dielectric breakdown strength, etc.; After linking, the electrical insulation properties such as volume resistivity, space charge characteristics, insulation breakdown strength, etc. will not be reduced; and electrical insulation materials formed by the above resin materials and crosslinked products, and electric wires and wires with insulating layers using them ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F255/00C08F255/02C08F255/08C08L9/00C08L21/00C08L23/02C08L23/08C08L51/06H01B3/44
CPCC08L2203/202C08F255/08C08F210/16C08L51/06H01B3/441C08L23/0815C08L21/00C08F255/00C08L23/02C08L9/00C08F255/02C08L2666/24C08L2666/02C08L2666/04
Inventor 池田雅昭清水良美
Owner JAPAN POLYOLEFINS CO LTD
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