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Radiation cross-linked low-smoke halogen-free phosphor-free nanometer flame retardant thermal shrinkage material and method for preparing the same

A nano flame retardant and heat shrinkable technology, applied in the field of materials, can solve problems such as adverse effects on the ecological environment and human health, affecting the smooth progress of disaster relief work, second disasters to life and property, and reduce casualties and property losses. Excellent flame retardant effect and the effect of improving physical and mechanical properties

Active Publication Date: 2006-07-19
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

As early as the 1970s, various flame-retardant heat-shrinkable materials have been developed at home and abroad, but most of these flame-retardant heat-shrinkable materials contain halogen. Although they have a certain flame-retardant effect, when a fire occurs, Burning heat-shrinkable materials will still produce toxic gas and smoke, which not only affects the smooth progress of disaster relief work, but also causes "second disasters" to life and property
A small number of halogen-free flame-retardant heat-shrinkable materials use phosphorus-based flame retardants, but because phosphorus-based flame retardants are mostly liquid at room temperature, have a large amount of smoke and are toxic, they are harmful to the ecological environment after use and disposal. adverse effects on human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] With ethylene-vinyl acetate copolymer (EVA) 70kg (wherein, the content of vinyl acetate accounts for 30% by weight, melt index is 1g / 10min), ethylene-octene copolymer (POE) 20kg (wherein, octene content Accounting for 20% by weight, the melt index is 2g / 10min), maleic anhydride copolymerized modified ethylene-acrylic acid ester copolymer 10kg (wherein, the copolymer content accounts for 5.0% by weight, and the melt index is 5.0g / 10min), poly Antioxidant 1010 of methylsiloxane 5kg, 1.5kg, dilauryl thiodipropionate (DLTP) of 1.5kg, nano magnesium hydroxide flame retardant 80kg (for white powder, without mechanical impurities, MgO content >67% by weight, the average particle size is less than 200nm), 100kg of surface-activated superfine aluminum hydroxide (average particle size is 0.5-2.0um, the surface is treated with silane), 1.5kg of zinc stearate and triallyl iso Add 1.5kg of cyanate vinegar (TAIC) into the high-speed mixer in turn, stir at high speed for 5 minutes, an...

Embodiment 2

[0039] With ethylene-vinyl acetate copolymer (EVA) 60kg (wherein, the content of vinyl acetate accounts for 35% by weight, melt index is 3g / 10min), ethylene-octene copolymer (POE) 30kg (wherein, octene content Accounting for 10% by weight, the melt index is 0.5g / 10min), maleic anhydride copolymerized modified ethylene-vinyl acetate copolymer 10kg (wherein, the copolymer content accounts for 10.0% by weight, and the melt index is 10.0g / 10min), Antioxidant 1076 of polydimethylsiloxane 5kg, 1.0kg, di(octadecyl) thiodipropionate (DSTP) of 1.5kg, nano magnesium hydroxide flame retardant 100kg (for white powder, without Mechanical impurities, MgO content > 67% by weight, average particle size less than 200nm), 120kg of superfine aluminum hydroxide treated with surface activation and 30kg of superfine magnesium hydroxide treated with surface activation (average particle size is 0.5-2.0um, the surface has been treated Silane treatment), magnesium stearate 1.5kg and pentaerythritol tet...

Embodiment 3

[0042] 50kg of ethylene-vinyl acetate copolymer (EVA) (wherein, the content of vinyl acetate accounts for 20% by weight, and the melt index is 0.5g / 10min), 10kg of ethylene-octene copolymer (POE) (wherein, octene content accounts for 10% by weight, and the melt index is 0.5g / 10min), maleic anhydride copolymerized modified ethylene-acrylate copolymer 10kg (wherein, the copolymer content accounts for 5.0% by weight, and the melt index is 15.0g / 10min), Antioxidant 1010 of polydimethylsiloxane 5kg, 0.5kg, dilauryl thiodipropionate (DLTP) of 0.5kg, nano-magnesium hydroxide flame retardant 60kg (for white powder, without mechanical impurities, MgO content > 67% by weight, the average particle size is less than 200nm), 100kg of superfine aluminum hydroxide (average particle size is 0.5 ~ 2.0um, the surface is modified by polymer), zinc stearate 1kg and three Add 1 kg of methylolpropane triacrylate (TMPTMA) into a high-speed mixer in turn, and stir at a high speed for 10 minutes. The ...

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PUM

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Abstract

The disclosed radiation crosslinking low-fume non-halogen / phosphate nano flame-retardant heat-shrinkable material contains the ethene / vinyl-acetate copolymer, ethene / octene copolymer, polymer solvent, organosilicon polymer, composite antioxidant, nano Mg(OH)2 flame retardant, ultrafine Al(OH)3 Mg(OH)2 with activating-treated surface, lubricant, and lubricant; and can be manufactured by sitrring, extruding, drawing, air cooling, cutting grain, radiating, stretching and cooling form. The product has super flame-retardant effect and affects little to environment or human after abandonment. The preparation method is low cost and fit to industrial production.

Description

technical field [0001] The invention relates to the field of materials, in particular to a radiation-crosslinked low-smoke, halogen-free, and phosphorus-free nano flame-retardant heat-shrinkable material and a preparation method thereof. Background technique [0002] Heat-shrinkable material is a functional polymer material made of rubber and plastic materials based on the principle of "elastic memory" of polymers, which is kneaded, formed, cross-linked, heated, expanded, cooled and shaped. Since its development in the middle of the 1950s, heat-shrinkable materials have become important functional materials, widely used in the sealing and anticorrosion of chemical and petroleum pipelines, the insulation protection of household appliances, control cables, national defense communications, power cables, and electrical components. Shield connection, insulation sealing and other fields. However, with the continuous increase of the amount of heat-shrinkabl...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K5/36C09K21/14C08L83/00C08K3/22
Inventor 胡晖张有勇程根水申景强
Owner 广州凯恒科塑有限公司
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