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Preparation method for organic silicon and graphene oxide synergistic flame retardant polymer composite material

A technology of polymer materials and composite materials, applied in the field of preparation of graphene oxide and organosilicon synergistic flame retardant polymer composite materials, can solve the problems of easy combustion, poor fire safety, easy aging, etc., and achieve excellent synergistic flame retardant, Excellent physical properties, excellent flame retardant efficiency

Active Publication Date: 2017-06-13
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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  • Preparation method for organic silicon and graphene oxide synergistic flame retardant polymer composite material
  • Preparation method for organic silicon and graphene oxide synergistic flame retardant polymer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First wash and dry 0.50g of polyurethane open-cell foam with ethanol; then soak it in a graphene oxide aqueous solution with a concentration of 10mg / mL for 30s, take it out and dry it (60°C) for 10h; after that, take formazan with a solid content of 80%. Base silicone resin solution 40g, and add toluene 61.3g to dilute to solid content 30%, then catalyst polyether amine (D230) 0.8g mixes evenly; Then immerse the dried graphene oxide-coated polyurethane foam composite material into the above-mentioned organic Silicone resin solution, fully dipped. Finally, the spin-coated silicone resin composite foam material was rotated to remove excess solution, and put into an oven at 80° C. for curing for 2 hours. After cooling, the solidified graphene oxide and silicone resin synergistically flame-retardant polyurethane foam composite material 1 is obtained.

[0024] Ignition tests show that: compared to pure silicone modified polyurethane foam (such as figure 1 ), under the same...

Embodiment 2

[0026] First clean the surface of 10g of cured epoxy resin block, then soak it in the graphene oxide aqueous solution with a concentration of 1mg / mL for 600s, take it out and dry it (100°C) for 2h; after that, take methylbenzene with a solid content of 20%. Base silicone resin solution 40g, catalyst benzoic anhydride 0.2g and mix evenly; then immerse the dried graphene oxide-coated epoxy resin composite material in the above-mentioned silicone resin solution, and fully dip-coat. Finally, it was put into an oven for curing at 80° C. for 10 h. After cooling, the cured graphene oxide and silicone resin synergistically flame-retardant epoxy resin-based composite material 2 is obtained.

[0027] The ignition test shows that compared with the pure silicone modified epoxy resin, under the same silicone resin content, the graphene oxide and organic silicon synergistic flame retardant epoxy resin composite material can hardly be ignited, and there is no molten droplet dripping , and m...

Embodiment 3

[0029] Firstly clean the surface of 0.50g polystyrene foam, then soak it in the graphene oxide aqueous solution with a concentration of 6mg / mL for 60s, take it out and dry it (80°C) for 4h; Add 0.35 g of catalyst benzoic acid to 40 g of silicone resin solution and mix evenly; then immerse the dried graphene oxide-coated polystyrene foam composite material in the above-mentioned silicone resin solution for full dip coating. Finally, the spin-coated silicone resin composite foam material was rotated to remove excess solution, and put into an oven at 80° C. for curing for 2 hours. After cooling, the solidified graphene oxide and silicone resin synergistically 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 material is self-extinguishing in 25s, has self-extinguish...

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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 method for preparing 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 defect of most polymer materials is poor fire safety, easy aging, and easy combustion. Under the condition of heating by an external heat source, this kind of material first undergoes free 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 catch fire and burn. Part of the heat is supplied to the degrading molecular chain segment, further aggravating its degradation, producing more flammable gas, and causing the flame to spread rapidly in a short time. Whe...

Claims

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Application Information

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Patent Type & Authority Applications(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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