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Halogen-free expanded flame retardant cable outer sheath material composition and preparation method thereof

An intumescent flame retardant and composition technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of damage, loss of material mechanical properties, etc., and achieve the effect of simple process, good mechanical properties, and wide sources

Inactive Publication Date: 2013-05-15
JIANGSU BAOYUAN GAOXIN ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composition of a halogen-free intumescent flame-retardant cable outer sheath material and a preparation method thereof, to solve the problem of the existing composition of the halogen-free intumescent flame-retardant cable outer sheath material due to the intumescent flame retardant used. At the cost of impairing other properties of the material while achieving the purpose of improving flame retardancy, there is a disadvantage that the mechanical properties of the material are greatly lost. Through the present invention, while further improving the flame retardancy of the material, the performance of the material body is not affected. Enhance the mechanical properties of materials and improve product quality

Method used

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  • Halogen-free expanded flame retardant cable outer sheath material composition and preparation method thereof

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Experimental program
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Embodiment 1

[0015] Embodiment 1: Weigh 1.5% of halloysite and 1% of silane coupling agent, pour them into a high-speed mixer and mix for more than 5 minutes; then weigh 21% of ammonium polyphosphate flame retardant, 7% of pentaerythritol flame retardant Pour into a high-speed mixer and mix for more than 5 minutes; then add 66% ethylene vinyl acetate resin with a vinyl acetate content of 18%, 4% ethylene-vinyl acetate-maleic anhydride copolymer compatibilizer, 2% Mix antioxidant and 1% release agent for more than 3 minutes; the antioxidant is tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, and the release agent is hard Calcium fatty acid, the silane coupling agent is γ-aminopropyltriethoxysilane. The mixed material is put into a double-roll mill for melt blending to obtain the composition for the halogen-free intumescent flame-retardant cable outer sheath material of the present invention.

[0016] The obtained composition was vulcanized into a sheet in a vulca...

Embodiment 2

[0017] Embodiment 2, take 1.5% halloysite, 1% silane coupling agent by weighing, pour into high-speed mixer and mix for more than 5 minutes; Then weigh 21% ammonium polyphosphate flame retardant, 7% pentaerythritol flame retardant Pour the agent into a high-speed mixer and mix for more than 5 minutes; then add 64% ethylene vinyl acetate resin with a vinyl acetate content of 18%, 6% ethylene-vinyl acetate-maleic anhydride copolymer compatibilizer, 2% anti Oxygen agent and 1% release agent are mixed for more than 3 minutes; the antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, and the release agent is stearin Calcium acid, the silane coupling agent is γ-aminopropyltriethoxysilane. The mixed material is put into a double-roll mill for melt blending to obtain the composition for the halogen-free intumescent flame-retardant cable outer sheath material of the present invention.

[0018] The obtained composition was vulcanized into a sheet i...

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Abstract

The invention relates to a halogen-free expanded flame retardant cable outer sheath material composition and a preparation method thereof, and belongs to the technical field of cable material. The material is characterized by comprising an ethylene-vinyl acetate copolymer binder, an antioxidant, an ethylene vinyl acetate grafted maleic anhydride copolymer compatilizer, an antioxidant, an ammonium polyphosphate flame retardant, a pentaerythritol flame retardant, a release agent, and further comprising 1-3% of halloysite nanotubes and 1-2% of a silane coupling agent. The invention introduces halloysite nanotubes into the halogen-free expanded flame retardant ethylene-vinyl acetate cable sheath material to realize the purpose of flame retardant modification without affecting properties of the material, and at the same time to enhance the mechanical properties of the material. The invention has the advantages of simple process, easy operation and control, low cost of raw materials and wide range of sources; and the halogen-free expanded flame retardant cable sheath material prepared from the halogen-free expanded flame retardant cable outer sheath material composition provided by the invention has good mechanical and flame retardant properties.

Description

technical field [0001] The invention relates to a composition of a halogen-free expansion flame-retardant cable outer sheath material and a preparation method thereof, belonging to the technical field of cable materials. technical background [0002] Ethylene-vinyl acetate copolymer has been widely used in the cable and wire industry due to its excellent filling and physical and mechanical properties, and is widely used as an insulating material. However, the EVA material is extremely flammable, which greatly limits its application range. Halogen flame retardants have high flame retardant efficiency, but considering the EU and the public's increasing emphasis on environmental protection, the application of halogen flame retardants in wires and cables has received increasing pressure. Research on new halogen-free flame retardant systems, development The flame retardant technology of environmentally friendly cables and wires has become the development trend of flame retardant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06H01B3/44H01B7/295C08K13/06C08K9/06C08K7/00C08K3/32C08K5/053
Inventor 解洪俊周春云张胜刘喜山顾晓昱
Owner JIANGSU BAOYUAN GAOXIN ELECTRIC
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