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Flame-retarding single-wall heat-shrinkable tube and preparation method thereof

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

Inactive Publication Date: 2011-09-14
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A flame-retardant single-wall heat-shrinkable tube is composed of a wall material, in parts by mass, wherein the wall material is composed of 50 parts of polyolefin mixed resin, 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 stabilizer (REC-LS-D or REC-LS- F) 0.02-2 parts; 2-4 parts of smoke ...

Embodiment 2

[0041] A flame-retardant single-wall heat-shrinkable tube is composed of a wall material, in parts by mass, wherein the wall material is composed of 50 parts of polyolefin mixed resin, 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 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 stabilizer (REC-LS-D or REC-LS- F) 0.02-2 parts; 2-4 parts of smoke suppressant ...

Embodiment 3

[0055] A flame-retardant single-wall heat-shrinkable tube is composed of a wall material, in parts by mass, wherein the wall material is composed of 50 parts of polyolefin mixed resin, 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 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 stabilizer (REC-LS-D or REC-LS- F) 0.02-2 parts; 2-4 parts of smoke sup...

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Abstract

The invention relates to a heat-shrinkable tube, in particular to a flame-retarding single-wall heat-shrinkable tube and a preparation method thereof. The flame-retarding single-wall heat-shrinkable tube consists of a wall material; the wall material consists of the following components in part by mass: 50 parts of polyolefin mixed resin, 20 parts of auxiliary agent and 30 parts of flame retardant; and the preparation method comprises the steps of preparation, extrusion, radiation and expansion molding of an inner wall material of the flame-retarding single-wall heat-shrinkable tube.. Compared with the conventional shrinkable tubes, the flame-retarding single-wall heat-shrinkable tube has the technical characteristics that: the wall material is flame-retarding; the external layer has goodelectrical performance, chemical performance and the like of a common heat-shrinkable tube; and the flame-retarding single-wall heat-shrinkable tube has all using properties of the common heat-shrinkable tube and has waterproof, sealing, moisture-preventing and anti-corrosion performance and other performance.

Description

1. Technical field: [0001] The invention relates to a heat-shrinkable tube, in particular to a 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 strength and other...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L9/02C08L93/04C08K13/02C08K5/06C08K3/38C08K5/053C08K5/103B29C69/02B29C71/04B29C61/02B29B7/72H02G15/18
Inventor 张志强庄向阳
Owner 江苏达胜热缩防护用品有限公司
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