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ATH (alumina trihydrate)/graphene-synergized flame-retardant EVA (ethylene-vinyl acetate copolymer) and preparation method thereof

A technology of synergistic flame retardant and graphene, applied in the field of flame retardant EVA materials, can solve the problems of composite material processing performance and mechanical properties, and achieve the effects of improving mechanical properties, improving dispersibility, and enhancing bonding strength

Active Publication Date: 2017-08-25
张家港市科元高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, metal hydroxide is used in flame retardant polyolefins to meet certain requirements for flame retardant performance, and the addition amount is usually more than 60%. Such a large addition amount will seriously affect the processing performance and mechanical properties of the composite material.

Method used

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  • ATH (alumina trihydrate)/graphene-synergized flame-retardant EVA (ethylene-vinyl acetate copolymer) and preparation method thereof
  • ATH (alumina trihydrate)/graphene-synergized flame-retardant EVA (ethylene-vinyl acetate copolymer) and preparation method thereof
  • ATH (alumina trihydrate)/graphene-synergized flame-retardant EVA (ethylene-vinyl acetate copolymer) and preparation method thereof

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Embodiment 1

[0025] A kind of ATH / graphene synergistic flame retardant EVA material, its composition is calculated as follows in parts by weight:

[0026]

[0027]

[0028] The VA content in the described EVA resin is 25%.

[0029] The grafting rate of the maleic anhydride grafted EVA is 1.5%.

[0030] The modified aluminum hydroxide is prepared by the following method: dry the aluminum hydroxide at 110°C for 5-10 hours, then add distilled water to obtain the material, the mass ratio of aluminum hydroxide to distilled water is 3:2; then put the material into a constant temperature Heat to 50°C in a water bath, stir at a constant temperature, and the stirring speed is 4500r / min; then add titanate coupling agent and continue stirring at 4000r / min for 2h, the amount of titanate coupling agent added is 10% of the mass of aluminum hydroxide %, after emulsification, suction filtration, drying at 110°C for 5 hours, grinding and sieving to obtain modified aluminum hydroxide with a particle ...

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Abstract

The invention belongs to the field of flame-retardant EVA (ethylene-vinyl acetate copolymer) materials, and particularly relates to an ATH (alumina trihydrate) / graphene-synergized flame-retardant EVA material and a preparation method thereof. The flame-retardant material consists of EVA resin, maleic anhydride-grafted EVA, modified aluminium hydroxide, functionalized graphene, antioxidant, plasticizer and cross-linking agent. The formula of the ATH / graphene-synergized flame-retardant EVA material disclosed by the invention is reasonable, the amount of the added metal hydroxide flame retardant is small, the dispersibility is good, the good flame-retardant property of materials is met, the oxygen index is high, the UL-94 flammability grade can reach V-0, the mechanical properties of the material are good, the preparation method is simple and easy to implement, the operation cost is low, all the involved materials are easy to obtain and manufacture, and the invention is suitable for mass production in the industry.

Description

technical field [0001] The invention belongs to the field of flame-retardant EVA materials, in particular to an ATH / graphene synergistic flame-retardant EVA material and a preparation method thereof. Background technique [0002] Ethylene-vinyl acetate copolymer (EVA) has high flexibility, impact resistance, good compatibility with fillers, and good heat sealing performance, so it is widely used in wire and cable, packaging film, hot melt adhesive, toys and other fields. However, EVA is a flammable material, which is easy to cause fire during use and poses a great threat to people's property and personal safety, thus limiting its application fields. In order to improve the flame retardant performance of EVA, adding flame retardants to EVA is a common flame retardant method. Although traditional halogen-based flame retardants can bring good flame-retardant properties to materials, they will produce a lot of smoke and toxic and corrosive hydrogen halide gases during the combu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/00C08L91/00C08K13/06C08K9/02C08K9/06C08K9/04C08K3/04C08K5/134C08K5/526C08K5/12C08K3/22
CPCC08K2003/2227C08K2201/003C08L23/0853C08L2201/02C08L2205/03C08L2312/00C08L51/003C08L91/00C08K13/06C08K9/02C08K9/06C08K9/04C08K3/04C08K5/1345C08K5/526C08K5/12C08K3/22
Inventor 陶宇仲崇盟翁亚楠
Owner 张家港市科元高分子材料有限公司
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