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A preparation method of organosilicon and graphene oxide synergistic flame retardant polymer composite material

A technology of polymer materials and composite materials, which is applied in the field of preparation of graphene oxide and organic silicon synergistic flame-retardant polymer composite materials, can solve the problems of easy combustion, poor fire safety, and easy aging, and achieve excellent synergistic flame retardancy, Excellent physical properties and superior flame retardant efficiency

Active Publication Date: 2019-07-23
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of poor fire safety, easy aging and easy burning of most polymer materials, the present invention proposes a method for preparing a synergistic flame-retardant polymer composite material of organosilicon and graphene oxide, and the obtained flame-retardant polymer composite material is effective Maintain the excellent physical properties of the polymer material itself, and at the same time, there is a synergistic barrier effect between graphene oxide and silicone resin, and an excellent synergistic flame retardant effect is obtained

Method used

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  • A preparation method of organosilicon and graphene oxide synergistic flame retardant polymer composite material
  • A preparation method of organosilicon and graphene oxide synergistic flame retardant polymer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, 0.50g polyurethane open-cell foam was washed and dried with ethanol; then soaked in a graphene oxide aqueous solution with a concentration of 10mg / mL for 30s, taken out and dried (60°C) for 10h; then, take a solid content of 80% nail Base silicone resin solution 40g, and add 61.3g toluene to dilute to 30% solid content, and then catalyst polyetheramine (D230) 0.8g mixed uniformly; then the dried graphene oxide coated polyurethane foam composite material is immersed in the above organic Fully dip coating in silicone resin solution. Finally, the spin-coated silicone resin composite foam material is rotated to remove excess solution, and it is placed in an oven for curing at 80°C for 2 hours. After cooling, the cured graphene oxide and silicone resin synergistic flame-retardant polyurethane foam composite material 1 is obtained.

[0024] The ignition test shows: compared with pure silicone modified polyurethane foam (such as figure 1 ), under the same silicone resin c...

Embodiment 2

[0026] Clean the surface of the 10g cured epoxy resin block first, then soak it in a graphene oxide aqueous solution with a concentration of 1mg / mL for 600s, take it out and dry it (100℃) for 2h; then, take the methylbenzene with a solid content of 20% 40 g of organic silicon resin solution and 0.2 g of catalyst benzoic anhydride are mixed uniformly; then the dried graphene oxide coated epoxy resin composite material is immersed in the above organic silicon resin solution and fully dipped. Finally, it was put into an oven and cured at 80°C for 10 hours. After cooling, the cured graphene oxide and silicone resin synergistic flame-retardant epoxy resin-based composite material 2 is obtained.

[0027] The ignition test showed that: compared with pure silicone resin modified epoxy resin, under the same silicone resin content, the graphene oxide and organic silicon flame retardant epoxy resin composite material basically cannot be ignited, and there is no molten droplet dripping. , A...

Embodiment 3

[0029] First clean the surface of 0.50g polystyrene foam, then soak it in a graphene oxide aqueous solution with a concentration of 6mg / mL for 60s, take it out and dry (80℃) for 4h; then, take methyl phenyl with a solid content of 40% 40 g of the organic silicon resin solution, 0.35 g of the catalyst benzoic acid, and mixed uniformly; then the dried graphene oxide coated polystyrene foam composite material is immersed in the above-mentioned organic silicon resin solution and fully dipped. Finally, the spin-coated silicone resin composite foam material is rotated to remove excess solution, and it is placed in an oven for curing at 80°C for 2 hours. After cooling, the cured graphene oxide and silicone resin synergistic flame-retardant polystyrene foam composite material 3 is obtained.

[0030] The ignition test shows that compared with pure polystyrene foam, under the same silicone resin content, the graphene oxide and silicone synergistic flame-retardant polystyrene foam composite...

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Abstract

The invention relates to the field of a polymer composite material, in order to solve the problems of inferior fireproof safety, anti-ageing effect and inflammable property of most polymer materials. The invention provides a preparation method for an organic silicon and graphene oxide synergistic flame retardant polymer composite material. According to a method for respectively wrapping graphene oxide and organic silicon resin on the surface of a flammable polymer material, the excellent high temperature resistance and synergistic flame retardant effect of the graphene oxide and organic silicon resin are utilized to realize the efficient flame retardant fireproof property of the flammable polymer material, and meanwhile, the physical properties of the polymer material are effectively maintained.

Description

Technical field [0001] The invention relates to the field of polymer composite materials, in particular to a preparation method of graphene oxide and organic silicon synergistic flame-retardant polymer composite materials. [0002] Background of the invention [0003] Lightweight polymer materials have been widely used in public safety fields such as automobiles and transportation; however, the biggest drawback of most polymer materials is poor fire safety, easy aging, and burning. Under the condition of external heat source heating, this kind of material first undergoes a radical chain degradation reaction with oxygen in the air to produce volatile combustibles; when a certain concentration and temperature are reached, the polymer material will ignite and burn, and the emitted Part of the heat is supplied to the degrading molecular chain, which further aggravates its degradation and produces more flammable gas, which makes the flame spread rapidly in a short time. These materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/36C08J7/04C08L75/04C08L63/00C08L25/06C08L23/06
CPCC08J7/0423C08J9/365C08J2323/06C08J2325/06C08J2363/00C08J2375/04C08J2483/04
Inventor 汤龙程吴谦厉世能赵丽裴勇兵吴连斌蒋剑雄邱化玉
Owner HANGZHOU NORMAL UNIVERSITY
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