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Fire-retarding thermal-shrinked indicated double pipe of radiant cross-linked and its preparation method

A technology of heat shrinkage and irradiation, which is applied in the field of materials, can solve the problems of handwriting not being resistant to rubbing and cannot be kept permanently, and achieve the effects of excellent rubbing resistance, mold resistance and weather resistance, and low price

Active Publication Date: 2008-05-14
广州凯恒科塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, these heat-shrinkable sleeves are all printed with ink, and there are shortcomings such as the handwriting is not resistant to abrasion and cannot be permanently maintained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Get 30 parts of ethylene-vinyl acetate copolymer (EVA), (VA content is 14% (weight), melt index is 3.6g / 10min); Ethylene-ethyl acrylate copolymer (EEA) 10 parts (EA content is 19 (weight) %, melt index is 3.2g / 10min); ethylene propylene rubber (EPDM) 12 parts, (ethylene content is 53% (weight), Mooney viscosity (ML (1+4), 125 ℃) is 42MU) ; 18 parts of decabromodiphenylethane; 9 parts of antimony trioxide; 16 parts of superfine magnesium hydroxide treated by surface activation; composite antioxidant (wherein: 0.5 part of pentaerythritol ester (antioxidant 1010), thiodisulfide Dilauryl propionate (DLTP) 0.5 part) 1 part; lubricant zinc stearate 1 part; sensitizer trimethylolpropane triacrylate (TMPTA) 1.5 parts; white mother 6 parts; , high-speed stirring for 8 minutes, the temperature of the material should not exceed 80 ℃. The mixed material is extruded with a reciprocating single-screw mixing extruder at 100-160°C, drawn, water-cooled, air-cooled, and pelletized. Tha...

Embodiment 2

[0058] Get 40 parts of ethylene-vinyl acetate copolymer (EVA), (VA content is 14% (weight), melt index is 3.6g / 10min); Ethylene-ethyl acrylate copolymer (EEA) 5 parts, (EA content is 19% (weight), melt index is 3.2g / 10min); 9 parts of ethylene-propylene rubber (EPDM), (ethylene content is 53% (weight), Mooney viscosity (ML(1+4), 125°C) is 42MU ); 8 parts of chlorosulfonated polyethylene rubber, wherein the chlorine content is 30-40% (weight), and the Mooney viscosity (ML(1+4), 100°C) is in the range of 40-56MU; decabromodiphenylethane 16 parts; 8 parts of antimony trioxide; 20 parts of superfine magnesium hydroxide treated with surface activation; composite antioxidant (among them: 0.5 part of pentaerythritol ester (antioxidant 1010); dilauryl thiodipropionate (DLTP ) 1 part) 1.5 parts; lubricant zinc stearate 1 part; sensitizer trimethylolpropane triacrylate (TMPTA) 1.5 parts; It is advisable that the temperature of the material should not exceed 80°C. The mixed material is...

Embodiment 3

[0060] Get 30 parts of ethylene-vinyl acetate copolymer (EVA), wherein the VA content is 15% (weight), and the melt index is 1.5g / 10min); 10 parts of ethylene-acrylate copolymer, of which: 5 parts of EEA, its acrylic acid Ester EA content is 16% (weight), melt index is 6.0g / 10min; EMA 5 parts, its acrylate MA content is 20% (weight), melt index is in the scope of 5.0g / 10min; Ethylene-propylene rubber (EPDM) 12 parts, wherein ethylene content is 53% (weight), Mooney viscosity (ML (1+4), 125 ℃) is 42MU); Chlorosulfonated polyethylene rubber 3 parts, wherein chlorine content is 30~40% (weight) ), Mooney viscosity (ML(1+4), 100°C) in the range of 40-56MU; 18 parts of decabromodiphenylethane; 9 parts of antimony trioxide; 16 parts of superfine magnesium hydroxide treated with surface activation ; Composite antioxidant (wherein: 0.5 part of pentaerythritol ester (antioxidant 1010), 1.5 part of dilauryl thiodipropionate (DLTP) 1.5 part; 1.5 parts of lubricant magnesium stearate; sens...

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Abstract

A radiant cross-linking fire-retardant and heat-shrinkage indicating double pipe and its production are disclosed. The process is carried out by taking ethane-vinyl acetate multi-polymer, ethane-ethyl acrylate multi-polymer, ethylene-propylene rubber, fire-retardant decabromodiphenyl ethane, antimonous oxide, surface-activated superfine-magnesium hydrate and auxiliary as raw material, mill granulating, extrude forming, radiant cross-linking, expand sizing, and finish treating. It has better weather-resisting, high and low-temperature-resisting, anti-corrosive and antibacterial performances and long-period storage. It can be used for military industry, aviation and aerospace, civil high-terminal electronic equipment and cable.

Description

technical field [0001] The invention belongs to a material, and relates to a radiation-crosslinked flame-retardant heat-shrinkable marking sleeve and its material and preparation method. Background technique [0002] In the electrical assembly process, in order to accurately identify and distinguish various cables and components, and facilitate production, debugging, maintenance and testing, it is often necessary to mark the assembled wires, cables and components. In the early days, the material used as a wire and cable identification plate was a thin aluminum plate. The aluminum plate was cut into a T-shaped rough, and characters were engraved on the blank by a manual carving machine and a pre-made font. This method is inefficient and not suitable for mass production, and the label has poor adhesion and is easy to loosen, so it cannot be used on airborne and shipboard electronic equipment. Later, non-shrinkable plastic casing signs appeared, and characters were written by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/101C08L23/08C08J3/24B29C47/38B29L23/00C08L23/16C08L23/26C08K3/22B29C48/395
CPCB29C47/0023B29C47/0004B29C48/022B29C48/09
Inventor 张有勇程根水申景强胡晖
Owner 广州凯恒科塑有限公司
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