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Halogen-free antiflaming single-wall heat-shrinkable tube and preparation method thereof

A technology of heat-shrinkable tubes and flame retardants, which is applied to tubular objects, other household appliances, applications, etc., can solve the problems of high cost, poor flame retardant effect, and low quality of double-walled tubes, and achieve low longitudinal shrinkage, Significant economic benefits and environmental protection benefits, the effect of good performance

Active Publication Date: 2011-09-14
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

[0040] A halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall material, in which the wall material is composed of 53 parts of polyolefin mixed resin, 10 parts of auxiliary agent and 37 parts of flame retardant; in terms of mass percentage: all The polyolefin mixed resin mentioned above 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;

[0041] 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 parts...

Embodiment 2

[0067] A halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall material, in which the wall material is composed of 53 parts of polyolefin mixed resin, 10 parts of auxiliary agent and 37 parts of flame retardant; in terms of mass percentage: all The polyolefin mixed resin described above is a polyolefin mixed resin prepared by melt blending four kinds of polyolefin materials of 15% EVA630, 20% EVA421, 45% EVA283 and 20% EVA220;

[0068] 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 parts of sens...

Embodiment 3

[0094] A halogen-free flame-retardant single-wall heat-shrinkable tube is composed of wall material, in which the wall material is composed of 53 parts of polyolefin mixed resin, 10 parts of auxiliary agent and 37 parts of flame retardant; in terms of mass percentage: all The polyolefin mixed resin described above is a polyolefin mixed resin prepared by melt blending four kinds of polyolefin materials: 30% EVA630, 20% EVA421, 40% EVA283 and 10% EVA220;

[0095] 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 parts of sensit...

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Abstract

The invention relates to a heat-shrinkable tube, in particular to a halogen-free antiflaming single-wall heat-shrinkable tube and a preparation method thereof. The heat-shrinkable tube consists of wall material, according to parts by weight, the wall material comprises 53 parts of polyolefin mixed resin, 10 parts of auxiliary agent and 37 parts of fire retardant; and the preparation method comprises the steps of preparation of the wall material of the heat-shrinkable tube, extrusion, irradiation and expanding forming. Compared with the traditional shrinkable tube, the halogen-free antiflamingsingle-wall heat-shrinkable tube is technically characterized by adopting special halogen-free fire retardant in the raw material, therefore, the antiflaming effect of the product is good, and the tube resists high temperature, has good performances, no pollution even in burning, lowered cost and significant economic benefit and environmental protection benefit, and is applicable to large-scale popularization and application.

Description

1. Technical field: [0001] The invention relates to a heat-shrinkable tube, in particular to a halogen-free flame-retardant single-wall heat-shrinkable tube and a preparation method thereof. 2. Background technology [0002] The heat-shrinkable double-walled tube currently on the market has an inner and outer two-layer structure, which is composed of a flame-retardant polymer outer layer with a shape memory function that can shrink radially after heating and an inner rubber layer that can melt and flow at the shrinkage temperature. After heating, the inner adhesive layer melts and flows to fill. It can be widely used in aviation, aerospace, shipbuilding, automobiles, home appliances, communications, petrochemical and other fields. 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L31/04C08K13/06C08K9/04C08K9/06C08K3/22C08K3/34B29C69/02B29B7/72B29L23/00
Inventor 张志强庄向阳
Owner JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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