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Medium and low pressure flame retardant single wall thermal shrinkage pipe and preparation method thereof

A heat-shrinkable tube, low-voltage technology, used in cable joints and other directions, can solve the problem of less 10kV high-voltage heat-shrinkable materials, and achieve the effect of low longitudinal shrinkage

Inactive Publication Date: 2011-07-27
江苏达胜热缩防护用品有限公司
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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
[0003] However, the application of 10kV high-voltage heat-shrinkable materials is less, and the present invention provides a heat-shrinkable material that can work under 10kV high-voltage state

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A medium-low pressure flame-retardant single-wall heat-shrinkable tube is composed of wall material, wherein the wall material is composed of 70 parts of polyolefin mixed resin, 10 parts of auxiliary agent and 30 parts of flame retardant; the flame retardant For decabromodiphenyl ether.

[0029] 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 ;

[0030] In parts by mass, the auxiliary agent is composed of paraffin wax, antioxidant, anti-copper agent, processing stabilizer and sensitized crosslinking auxiliary agent, wherein the antioxidant tetrakis (β-(3,5-di-tert-butyl-4 -Hydroxyphenyl) propionic acid) pentaerythritol 1-3 parts; anti-copper agent MDA-1024 (hydroxyl-terminated polybutadiene acrylonitrile liquid rubber) 0.5-1 parts, processing stabilizer rare earth composite stabilizer (REC-LS-D or REC-LS-F) 0.02-2 parts; ...

Embodiment 2

[0042] A medium-low pressure flame-retardant single-wall heat-shrinkable tube is composed of wall material, wherein the wall material is composed of 70 parts of polyolefin mixed resin, 10 parts of auxiliary agent and 30 parts of flame retardant; the flame retardant For decabromodiphenyl ether.

[0043] 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;

[0044] In parts by mass, the auxiliary agent is composed of paraffin wax, antioxidant, anti-copper agent, processing stabilizer and sensitized crosslinking auxiliary agent, wherein the antioxidant tetrakis (β-(3,5-di-tert-butyl-4 -Hydroxyphenyl) propionic acid) pentaerythritol 1-3 parts; anti-copper agent MDA-1024 (hydroxyl-terminated polybutadiene acrylonitrile liquid rubber) 0.5-1 parts, processing stabilizer rare earth composite stabilizer (REC-LS-D or REC-LS-F) 0.02-2 parts; smoke suppre...

Embodiment 3

[0056] A medium-low pressure flame-retardant single-wall heat-shrinkable tube is composed of wall material, wherein the wall material is composed of 70 parts of polyolefin mixed resin, 10 parts of auxiliary agent and 30 parts of flame retardant; the flame retardant For decabromodiphenyl ether.

[0057] 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;

[0058] In parts by mass, the auxiliary agent is composed of paraffin wax, antioxidant, anti-copper agent, processing stabilizer and sensitized crosslinking auxiliary agent, wherein the antioxidant tetrakis (β-(3,5-di-tert-butyl-4 -Hydroxyphenyl) propionic acid) pentaerythritol 1-3 parts; anti-copper agent MDA-1024 (hydroxyl-terminated polybutadiene acrylonitrile liquid rubber) 0.5-1 parts, processing stabilizer rare earth composite stabilizer (REC-LS-D or REC-LS-F) 0.02-2 parts; smo...

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Abstract

The invention relates to a thermal shrinkage pipe, in particular to a medium and low pressure flame retardant single wall thermal shrinkage pipe and a preparation method thereof. The medium and low pressure flame retardant single wall thermal shrinkage pipe is made from a wall material which comprises 70 parts of polyolefin mixed resin, 10 parts of auxiliary agent and 30 parts of flame retardant by weight. The preparation method comprises the following steps: preparing the inner wall material of the flame retardant single wall thermal shrinkage pipe, extruding, irradiating and expanding for molding. Compared with the traditional shrinkage pipe, the invention has the technical characteristics that the wall material has flame resistance and can be applied under 10kV high voltage, and the medium and low pressure flame retardant single wall thermal shrinkage pipe not only has all operational properties of the common thermal shrinkage pipe, but also has the properties of water prevention, sealing, moisture prevention, corrosion prevention and the like; and the shrinkage pipe fully meets the environmental requirements of the ROHS instructions of European Union and other countries, and has the advantages of low temperature shrinkage, 3-4 times stable expansion, low longitudinal shrinkage rate, and the like.

Description

1. Technical field: [0001] The invention relates to a heat-shrinkable tube, in particular to a medium-low pressure 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 dielectri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L9/02C08K13/02C08K5/06C08K3/38C08K5/053C08K5/134B29C69/02B29C71/04B29C61/02B29B7/72H02G15/18
Inventor 张志强王明志
Owner 江苏达胜热缩防护用品有限公司
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