Resin composition, and wire and cable using the same

一种树脂组合物、硅烷化合物的技术，应用在电线,电缆领域，能够解决变形、不合格等问题，达到交联速度优异、高交联度、挤出外观平滑的效果

Inactive Publication Date: 2012-11-21
PROTERIAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The thermal extension test is a test to measure the deformation easiness of insulating materials at high temperatures. Even polyethylene that has been used in the past is deformed greatly due to polyethylene with a low degree of crosslinking, so it is unacceptable.

Method used

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  • Resin composition, and wire and cable using the same
  • Resin composition, and wire and cable using the same
  • Resin composition, and wire and cable using the same

Examples

Experimental program
Comparison scheme
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Embodiment

[0061] Hereinafter, Examples 1 to 6 and Comparative Examples 1 to 7 of the present invention will be described.

[0062] In Examples 1-6 and Comparative Examples 1-7, the resin composition which has silane crosslinked polyethylene as a main component was produced. The step of graft-copolymerizing the silane compound and polyethylene, and the step of kneading the silanol condensation catalyst and extrusion-coating the copper conductor were carried out separately.

[0063] First, in the process of graft-copolymerizing the silane compound and polyethylene, use a 40mm single-screw extruder (L / D=24), add polyethylene from the hopper, and inject it into vinyltrimethoxysilane by a liquid filling pump. A solution in which dicumyl peroxide was dissolved was produced to produce polyethylene in which a silane compound was graft-copolymerized. Extrusion was carried out so that the cylinder temperature was set to 200° C. and the residence time in the extruder was 2 to 3 minutes.

[0064]...

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Abstract

A resin composition includes a silane-crosslinked polyethylene as a main component provided by crosslinking a polyethylene in the presence of a silanol condensation catalyst and water, the polyethylene being graft-copolymerized with a silane compound by a free radical generating agent. The polyethylene has a density of 0.87 to 0.91 g / cm3. The silane compound is included not less than 2 parts by mass relative to 100 parts by mass of the polyethylene. The resin composition includes silicon detected by a fluorescence X-ray at a rate of not less than 0.3 mass % and has a gel fraction of not less than 70%. A mass ratio of the silane compound to the free radical generating agent is not less than 35 and not more than 150.

Description

technical field [0001] The present invention relates to a resin composition having a high degree of crosslinking, an excellent crosslinking speed at room temperature, and a smooth extruded appearance, and an electric wire and cable using the resin composition. Background technique [0002] Polyethylene is widely used as a coating material for electric wires and cables because of its excellent electrical insulating properties. In particular, cross-linked polyethylene having a cross-linked structure introduced into polyethylene is widely used as a coating material for power cables and the like because it can add heat resistance. [0003] The main crosslinking methods of polyethylene are organic peroxide crosslinking, electron beam irradiation crosslinking and silane crosslinking. In silane cross-linking, polyethylene graft-copolymerized with a silane compound is molded, and then placed in a high-temperature, high-humidity environment where moisture exists to perform cross-lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/5425C08F255/02H01B3/44
CPCH01B3/441C08L51/06C08F255/02C08L2312/08C08K5/5425C08L23/06C09D123/0815H01B3/44C08K5/5415C08F230/085C08C19/25C08C19/28C08F255/08C08J3/24
Inventor 杉田敬佑菊池龙太郎
Owner PROTERIAL LTD
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