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Halogen-free flame-retardant thermal-shrinkage sleeve materials and sleeve prepared thereby

A technology of heat-shrinkable sleeves and flame retardants, which is applied in the direction of tubular objects, other household appliances, household appliances, etc., can solve problems such as dust pollution, environmental pollution, and allergic erythema of human skin, and achieve easy-to-obtain and environmentally friendly Effect

Active Publication Date: 2005-06-22
深圳市沃尔热缩有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the flame-retardant heat-shrinkable sleeves on the market basically use halide flame-retardant products, and most of them use organic bromide and antimony trioxide flame-retardant products. Such products pollute the environment and burn When a large amount of toxic and corrosive hydrogen bromide gas is produced, there may also be highly toxic dioxins, namely polybrominated benzodioxanes and brominated dibenzofurans, which are carcinogens
At the same time, antimony trioxide will produce dust pollution during the production process. This dust will cause harm to the human respiratory system and cause allergic erythema on the human skin. The use of antimony trioxide will also cause heavy metal elements in the casing to exceed the standard.

Method used

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preparation example Construction

[0025] The preparation method of the halogen-free flame-retardant heat-shrinkable sleeve of the present invention is as follows: 1) the composition of the above-mentioned various substances is uniformly mixed by a high-speed mixer, and then mechanically blended to make it a halogen-free flame-retardant For polymer alloy masterbatch, the method of mechanical blending refers to any one of the following methods: ①Compressing and pelletizing after blending in an electric heating double-roller plastic mixer; 3) Parallel twin-screw blending extrusion and pelletizing; 2) Extrude the obtained halogen-free flame-retardant polymer alloy masterbatch with ordinary plastic single-screw to obtain halogen-free flame-retardant polymer alloy pipes of any specification; 3) cross-linking the obtained pipe through high-energy ray irradiation, so that the cross-linking degree of the polymer alloy pipe reaches 50-90%. ; 4) heating the pipe with a certain degree of crosslinking obtained in step 3) t...

Embodiment approach 2

[0029] Embodiment two: get 94 parts of ethylene vinyl acetate copolymer (EVA), 6 parts of low-density polyethylene (LDPE), 16 parts of SBS, 50 parts of aluminum hydroxide micropowder, 40 parts of magnesium hydroxide micropowder, 6 parts of red phosphorus powder, 7 parts of A-172, 1 part of antioxidant 1010, 1 part of ZnSt, and 4 parts of carbon black masterbatch, adopt the same method as Embodiment 1, and the irradiation dose is 9 Mrad to obtain a black halogen-free flame-retardant heat-shrinkable sleeve.

Embodiment approach 3

[0030] Embodiment 3: Take 60 parts of ethylene vinyl acetate copolymer (EVA), 30 parts of ethylene acrylic acid copolymer (EEA), 10 parts of linear low density polyethylene (LIDPE), 2 parts of methyl vinyl silicone rubber (VMQ), 40 parts 1 part of aluminum hydroxide micropowder, 20 parts of hydrated zinc borate powder, 40 parts of microencapsulated ammonium polyphosphate, 2 parts of A-174, 1 part of antioxidant 1010, 1 part of MgSt, 6 parts of plastic red B masterbatch. Embodiment 1 Using the same processing method, a red halogen-free flame-retardant heat-shrinkable sleeve is obtained.

[0031] The halogen-free flame-retardant heat-shrinkable sleeve of the present invention is environmentally friendly, does not produce toxic gas when burned, and does not contain heavy metals harmful to the human body. It is a safe and environmentally friendly green product, and the raw materials are easy to obtain. The method adopts the traditional manufacturing method, which is suitable for i...

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Abstract

The invention provides a bittern-free flame-proof thermal contraction sleeve which comprises (by weight ratio), (1) 100 parts of one or more selected from ethane-vinyl acetate copolymer (EVA), ethene-ethyl acrylate copolymer (EEA), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), (2) 5-50 parts of one or more selected from ethylene-propylene terpolymerisate rubber (EPDM), ethylene propylene rubber (EPM), dimethyl silicone rubber (MQ), methylvinyl silicone rubber (VMQ), methylsilicone rubber with phenyl and vinyl Group (PVMQ), thermoplastic elastomer styrene - butadiene - styrene blocked copolymer (SBS), styrene-isoprene blocked copolymer (SIS), (3) 50-100 parts of bittern-free flame retardant, and (4) 0.5-6 parts of coupling agent.

Description

【Technical field】 [0001] The invention relates to the field of flame-retardant heat-shrinkable sleeves, in particular to a halogen-free flame-retardant heat-shrinkable sleeve material and a halogen-free flame-resistant heat-shrinkable sleeve prepared from the material. 【Background technique】 [0002] At present, the flame-retardant heat-shrinkable sleeves on the market basically use halide flame-retardant products, and most of them use organic bromide and antimony trioxide flame-retardant products. Such products pollute the environment and burn When producing a large amount of toxic and corrosive hydrogen bromide gas, there may also be highly toxic dioxins, namely polybrominated benzodioxanes and brominated dibenzofurans, which are carcinogens. At the same time, antimony trioxide will produce dust pollution in the production process. This dust will cause harm to the human respiratory system and cause allergic erythema on the human skin. The use of antimony trioxide will also...

Claims

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Application Information

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IPC IPC(8): B29D23/00C08K5/54C08L23/08
Inventor 周和平彭雄心肖炳敦谢世平
Owner 深圳市沃尔热缩有限公司
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