Semiconduction medium and low voltage halogen-free flame retardant single-wall heat-shrinkable tube and preparation method thereof

A heat-shrinkable tube and low-pressure technology, which is applied in the treatment of dyed low-molecular organic compounds, fibrous fillers, and dyed organic silicon compounds, can solve the problems of low quality, poor flame-retardant effect, and high cost of double-walled tubes. Achieve significant economic benefits and environmental protection benefits, good performance, and low longitudinal shrinkage

Inactive Publication Date: 2010-06-30
JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there are many disadvantages of low quality, high cost or poor flame retardant effect for double-walled tubes with halogen-free flame retardants.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A semi-conductive low-voltage halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall materials. According to the parts by mass, the wall materials are composed of 70 parts of polyolefin mixed resin, 10 parts of conductive carbon black, and 10 parts of additives. 20 parts of additive and 10 parts of auxiliary flame retardant; the auxiliary flame retardant is aluminum hydroxide or magnesium hydroxide;

[0044] 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 ;

[0045]The auxiliary agent is composed of paraffin wax, 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 acryloni...

Embodiment 2

[0073] A semi-conductive low-voltage halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall materials. According to the parts by mass, the wall materials are composed of 70 parts of polyolefin mixed resin, 10 parts of conductive carbon black, and 10 parts of additives. Composed of 20 parts of flame retardant and 10 parts of auxiliary flame retardant; the olefin mixed resin is a polyolefin mixed resin prepared by melting and blending four kinds of polyolefin materials: 15% EVA630, 20% EVA421, 45% EVA283 and 20% EVA2200;

[0074] The auxiliary agent is composed of paraffin wax, 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

[0100] A semi-conductive low-voltage halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall materials. According to the parts by mass, the wall materials are composed of 70 parts of polyolefin mixed resin, 10 parts of conductive carbon black, and 10 parts of additives. 20 parts of additive and 10 parts of auxiliary flame retardant;

[0101] 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;

[0102] The auxiliary agent is composed of paraffin wax, 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 st...

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PUM

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Abstract

The invention relates to a heat-shrinkable tube, in particular to a semiconduction medium and low voltage halogen-free flame retardant single-wall heat-shrinkable tube and a preparation method thereof. The heat-shrinkable tube consists of a wall, and materials of the wall comprise the following raw materials in parts by weight: 70 parts of polyolefin mixed resin, 10 parts of conductive carbon black, 10 parts of auxiliary agent, 20 parts of flame retardant and 10 parts of auxiliary flame retardant. The preparation method comprises the following steps of: preparing an inner wall material of the single-wall heat-shrinkable tube; extruding; irradiating; expanding; and molding. Compared with the traditional shrinkable tubes, the single-wall heat-shrinkable tube has the technical characteristics that the halogen-free flame retardant is adopted in the raw materials, and the product has good flame retardant effect, high temperature resistance, no pollution during combustion and reduced cost, is suitable for working under a high-voltage condition of 10kV, has obvious economic benefits and environmental protection benefits and is suitable for large-scale popularization and application.

Description

1. Technical field: [0001] The invention relates to a heat-shrinkable tube, in particular to a semi-conductive medium-low voltage halogen-free flame-retardant single-wall heat-shrinkable tube and a preparation method thereof. 2. Background technology [0002] The heat-shrinkable single-wall tubes currently on the market can be widely used in aviation, aerospace, ships, automobiles, home appliances, communications, petrochemicals and other fields, and can be flame-retardant, sealed, moisture-proof, waterproof, and line Anti-corrosion, anti-vibration dislocation and other functions. In the formulation of conventional outer layer materials, halogen-containing flame retardants are used, which have the disadvantages of high smoke generation and high toxicity during combustion, and are likely to cause secondary disasters of fire. At present, the country's requirements for environmental protection are getting higher and higher, and halogen-free flame retardants have been used in m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L9/02C08K13/06C08K3/04C08K3/38C08K3/22C08K3/34C09C1/02C09C1/40C09C1/28C09C3/08C09C3/12B29C69/02B29C71/04B29C61/02B29B7/72H02G15/18
Inventor 张志强庄向阳
Owner JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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