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Semiconducting flame retardant single-wall heat-shrinkable tube and preparation method thereof

A heat-shrinkable tube and flame retardant technology, applied in the direction of cable joints, etc., to achieve the effect of excellent flame retardant effect and low longitudinal shrinkage rate

Inactive Publication Date: 2010-05-05
JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary heat shrinkable tubes can no longer meet these requirements at the same time, which brings us a new topic, that is, it is necessary to develop a heat shrinkable tube that can not only be waterproof and sealed, but also have certain mechanical strength, good electrical properties and chemical properties. A new type of heat shrinkable product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A semi-conductive flame-retardant single-wall heat-shrinkable tube is composed of wall material, according to the mass parts, wherein the wall material is composed of 50 parts of polyolefin mixed resin, 10 parts of conductive carbon black, 20 parts of auxiliary agent and 30 parts of flame retardant ; The flame retardant is decabromodiphenyl ether.

[0028] By mass percentage: the polyolefin mixed resin is a polyolefin mixed resin prepared by melt blending four kinds of polyolefin materials: 1-30% EVA630, 1-20% EVA421, 20-50% EVA283 and 10-30% EVA220 ;

[0029] The auxiliary agent is composed of paraffin, antioxidant, anti-copper agent, processing stabilizer and sensitizing cross-linking auxiliary agent; wherein the antioxidant tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionic acid) 1-3 parts of pentaerythritol, anti-copper agent MDA-1024 (hydroxyl-terminated polybutadiene acrylonitrile liquid rubber) 0.5-1 part, processing stabilizer rare earth composite stabil...

Embodiment 2

[0041] A semi-conductive flame-retardant single-wall heat-shrinkable tube is composed of wall material, according to the mass parts, wherein the wall material is composed of 50 parts of polyolefin mixed resin, 10 parts of conductive carbon black, 20 parts of auxiliary agent and 30 parts of flame retardant ; The flame retardant is decabromodiphenyl ether.

[0042] By mass percentage: the polyolefin mixed resin is a polyolefin mixed resin prepared by melt blending four kinds of polyolefin materials: 15% EVA630, 20% EVA421, 45% EVA283 and 20% EVA220;

[0043] The auxiliary agent is composed of paraffin, antioxidant, anti-copper agent, processing stabilizer and sensitizing crosslinking auxiliary agent; wherein the antioxidant tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionic acid) 1-3 parts of pentaerythritol, anti-copper agent MDA-1024 (hydroxyl-terminated polybutadiene acrylonitrile liquid rubber) 0.5-1 part, processing stabilizer rare earth composite stabilizer (REC-LS-...

Embodiment 3

[0055] A semi-conductive flame-retardant single-wall heat-shrinkable tube is composed of wall material, according to the mass parts, wherein the wall material is composed of 50 parts of polyolefin mixed resin, 10 parts of conductive carbon black, 20 parts of auxiliary agent and 30 parts of flame retardant ; The flame retardant is decabromodiphenyl ether.

[0056] In terms of mass percentage: the polyolefin mixed resin is a polyolefin mixed resin prepared by melt blending four kinds of polyolefin materials: 30% EVA630, 20% EVA421, 40% EVA283 and 10% EVA220;

[0057] The auxiliary agent is composed of paraffin, antioxidant, anti-copper agent, processing stabilizer and sensitizing crosslinking auxiliary agent; wherein the antioxidant tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionic acid) 1-3 parts of pentaerythritol, anti-copper agent MDA-1024 (hydroxyl-terminated polybutadiene acrylonitrile liquid rubber) 0.5-1 part, processing stabilizer rare earth composite stabilizer...

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Abstract

The invention relates to a heat-shrinkable tube, in particular to a semiconducting flame retardant single-wall heat-shrinkable tube and a preparation method thereof. The semiconducting flame retardant single-wall heat-shrinkable tube consists of a wall material. In parts by weight, the wall material contains 50 parts of polyolefin mixed resin, 10 parts of graphitized carbon black, 20 parts of assistant and 30 parts of flame retardant. The preparation method comprises the following steps of: preparing the inner and the outer wall materials of the flame retardant single-wall heat-shrinkable tube, extruding, irradiating and expanding molding. Compared with traditional shrinkable tubes, the single-wall heat-shrinkable tube has the technical characteristics that the wall material has the flame retardant performance, the outer layer keeps the characteristics of good electrical properties, chemical properties and the like of common heat-shrinkable tubes; and the single-wall heat-shrinkable tube has all use characteristics of the common heat-shrinkable tubes and also has the performances of water proofing, sealing, moisture proofing, corrosion prevention and the like.

Description

1. Technical field: [0001] The invention relates to a heat-shrinkable tube, in particular to a semiconductive flame-retardant single-wall heat-shrinkable tube and a preparation method thereof. 2. Background technology [0002] From the birth of heat shrinkable products to the present, the development speed can be said to be rapid, and the application field has been continuously expanded. At the beginning of the production of heat shrinkable products, they were mainly used for insulation protection, and now they are widely used in aviation, aerospace, ships, automobiles, home appliances, communications and petroleum. Chemical industry and other fields. Heat-shrinkable products play the role of sealing moisture-proof, waterproof, anti-corrosion and anti-vibration dislocation for cable joints and branches. Therefore, heat-shrinkable tubes are required to have good physical and electrical properties, such as wear resistance, anti-corrosion Impact resistance, high dielectric str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L9/02C08K13/02C08K3/04C08K5/01C08K5/134C08K3/38C08K5/053B29C69/02B29C71/04B29B9/00B29C47/92B29C61/02H02G15/18
Inventor 张志强庄向阳
Owner JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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