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Halogen-free flame retardant heat shirnkable sleeving and production technology

A heat shrinkable sleeve and content technology, applied in the field of electric power materials, can solve the problems of a large amount of hydrogen halide gas, secondary hazards, etc., and achieve the effects of solvent resistance, low cost and low price

Inactive Publication Date: 2013-07-03
HONGSHANG HEAT SHRINKABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although halogen-containing heat-shrinkable sleeves also have good flame-retardant properties, when a fire occurs, such halogen-containing flame-retardant materials will produce a large amount of smoke and toxic and corrosive hydrogen halide gas, causing secondary hazards.

Method used

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  • Halogen-free flame retardant heat shirnkable sleeving and production technology
  • Halogen-free flame retardant heat shirnkable sleeving and production technology
  • Halogen-free flame retardant heat shirnkable sleeving and production technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The halogen-free flame-retardant heat-shrinkable sleeve includes:

[0024]

Embodiment 2

[0026] The halogen-free flame-retardant heat-shrinkable sleeve includes:

[0027]

Embodiment 3

[0029] The halogen-free flame-retardant heat-shrinkable sleeve includes:

[0030]

[0031]

[0032] The present invention also provides a production process for a halogen-free flame-retardant heat-shrinkable sleeve, which includes the steps of:

[0033] Masterbatch processing steps: Add the components provided in the above-mentioned examples into the internal mixer according to the ratio and mix them at 100-130 degrees Celsius, and then mix and extrude them in the twin-screw extruder at 130-160 degrees Celsius. Extrusion, drawing, water cooling, air cooling, and pelletizing to obtain the masterbatch of halogen-free heat shrinkable sleeve material;

[0034] Extrusion step: the master batch is extruded into a pipe at a temperature of 100-160 degrees Celsius in a screw extruder equipped with a die and a mandrel;

[0035] Irradiation step: the extruded pipe is irradiated and cross-linked by an electron accelerator with an energy above 2.0MeV, and the irradiation dose is 3.0...

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Abstract

The invention provides a halogen-free flame retardant heat shirnkable sleeving and a production technology, the halogen-free flame retardant heat shirnkable sleeving comprises the following components by weight: an ethylene vinyl acetate copolymer, a maleic anhydride graft polymer, silicone masterbatch, super fine surface treatment activity magnesium hydroxide, zinc borate, surface treatment super fine red phosphorus, an organic nitrogen and phosphorus fire retardant, a lubricant, an antioxygen, a sensitized crosslinking agent and color master. The halogen-free flame retardant heat shirnkable sleeving has halogen-free flame retardant performance, no toxic and harmful gas is released while the halogen-free flame retardant heat shirnkable sleeving is combusted, and the halogen-free flame retardant heat shirnkable sleeving has the advantages of low smoke density, good thermal contraction, machinery performance, electric performance, flame retardant performance, corrosion resisting performance, salt spray resistance and solvent resistance performances.

Description

technical field [0001] The invention relates to the technical field of power materials, in particular to a halogen-free flame-retardant heat-shrinkable sleeve and a production process thereof. Background technique [0002] In order to meet the needs of special occasions and harsh conditions, the halogen-free heat shrinkable sleeve has good mechanical and insulating effects, as well as aging resistance, corrosion resistance, good strength, service life of more than 20 years, easy to use, and has very good resistance flammability. Although halogen-containing heat-shrinkable sleeves also have good flame-retardant properties, when a fire occurs, such halogen-containing flame-retardant materials will produce a large amount of smoke and toxic and corrosive hydrogen halide gas, causing secondary hazards. Contents of the invention [0003] The invention provides a halogen-free flame-retardant heat-shrinkable sleeve and its production process. The halogen-free flame-retardant heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/00C08L83/04C08K13/06C08K9/06C08K9/04C08K3/22C08K9/10C08K3/02C08K3/38B29C69/00B29C47/00B29C55/00B29C35/10B29B9/06
Inventor 钟晓光蒋宁邹闫谭新宪
Owner HONGSHANG HEAT SHRINKABLE MATERIALS