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Middle and low-pressure halogen-free flame retarding single-wall heat-shrinkable tube and manufacturing method thereof

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

Active Publication Date: 2010-06-30
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, 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 medium-low pressure halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall material, in which the wall material is composed of 70 parts of polyolefin mixed resin, 10 parts of auxiliary agent, 20 parts of flame retardant and auxiliary flame retardant Composed of 10 parts; 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 acrylonitrile liquid rubber) 0.5-1 part, processing stabiliz...

Embodiment 2

[0073] A medium-low pressure halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall material, in which the wall material is composed of 70 parts of polyolefin mixed resin, 10 parts of auxiliary agent, 20 parts of flame retardant and auxiliary flame retardant Composed of 10 parts; the olefin mixed resin is a polyolefin mixed resin prepared by melt 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-D or REC-LS- F) 0.02-2 parts; 2-4 parts of smoke suppressant zinc borate, 1-2...

Embodiment 3

[0100] A medium-low pressure halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall material, in which the wall material is composed of 70 parts of polyolefin mixed resin, 10 parts of auxiliary agent, 20 parts of flame retardant and auxiliary flame retardant 10 parts composition;

[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 stabilizer (REC-LS-D or REC-LS- F) 0.02-2 parts; 2-4 p...

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Abstract

The invention relates to a heat-shrinkable tube, in particular to a middle and low-pressure halogen-free flame-retarding single-wall heat-shrinkable tube and a manufacturing method thereof. The tube is composed of a wall. The material of the comprises the following components by mass: 70 portions of polyolefine mixed resin, 10 portions of auxiliary agent, 20 portions of flame retardant and 10 portions of auxiliary flame retardant. The manufacturing method comprises the step of preparing the inner wall material of the single-wall heat-shrinkable tube, extruding, radiating, expanding and forming. Compared with the traditional technology for manufacturing heat-shrinkable tube, the invention has the characteristics that the halogen-free flame retardant is adopted, the product has good flame retardant effectiveness, high temperature resistance, no pollution even in combustion and low cost; the product is applicable to operating under the conditions of 10 kV, has significant economical benefits and environment 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 medium-low pressure 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 many fields. Env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L9/02C08K13/06C08K3/22C08K3/34C08K3/38C08K5/053C09C1/02C09C1/28C09C1/40C09C3/08C09C3/12B29C69/02B29C71/04B29C61/02B29B7/72H02G15/18
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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