Graphene/graphene analogue WS2/bismaleimide composite material modified by cyclotriphosphazene polymer and preparation method thereof

A technology of bismaleimide and cyclotriphosphazene, which is applied in the field of graphene/graphene-like WS2/bismaleimide composite materials and its preparation, can solve the problem of uneven dispersion of graphene composite materials, bimaleimide Solve problems such as poor compatibility of imide resin, achieve the effect of preventing agglomeration, improving interfacial bonding strength, and improving dispersion

Inactive Publication Date: 2018-10-12
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] In order to avoid the deficiencies of the prior art, the present invention proposes a graphene / graphene-like WS modified by a cyclotriphosphazene polymer 2 / Bismaleimide composite material and preparation method, solve the problem of uneven dispersion of graphene composite material in polymer and poor compatibility with bismaleimide resin

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  • Graphene/graphene analogue WS2/bismaleimide composite material modified by cyclotriphosphazene polymer and preparation method thereof
  • Graphene/graphene analogue WS2/bismaleimide composite material modified by cyclotriphosphazene polymer and preparation method thereof
  • Graphene/graphene analogue WS2/bismaleimide composite material modified by cyclotriphosphazene polymer and preparation method thereof

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preparation example Construction

[0028] The preparation method comprises the following steps:

[0029] The first step is to prepare graphite-like WS by low-energy ball milling and ultrasonic method 2 (GL-WS 2 ); Prepare graphene oxide (GO) by modified Hummer's method.

[0030] In the second step, the GO and graphene-like WS prepared in the previous step 2 Dissolve in deionized water, ultrasonically disperse and stir for 30min. Then it was transferred to a high-temperature and high-pressure reactor, and an appropriate amount of hydrazine hydrate was added to react at high temperature and high pressure for 24 hours. Finally, wait for it to cool to room temperature, filter it with suction and wash it several times with deionized water, and dry it to obtain graphene / graphene-like WS 2 Nanocomposite particles (rGO / GL-WS 2 ).

[0031] In the third step, the graphene / graphene-like WS 2 Nanocomposite particles were dissolved in tetrahydrofuran and ultrasonically dispersed for half an hour. Under stirring, hexa...

Embodiment 1

[0039] Step 1: Put the WS 2 And NaCl dry mix with the ratio of 1:10 in the ball mill agate grinding bowl mechanochemical treatment 2h (reaction mixture: ball weight ratio is 1:7), the product that obtains the nanostructure is washed thoroughly with water, and is carried out drying at 100 ℃, Then ultrasonic 30min to prepare graphene-like WS 2 .

[0040] Step 2: Combine graphene oxide and graphene-like WS 2 Mixed and added to 100mL ethanol at a mass ratio of 1:0.5, ultrasonicated at 180W for 30min, transferred to a high-temperature and high-pressure hydrothermal reactor, and added with 5mL hydrazine hydrate, sealed and reacted at 220°C for 24h. After cooling to room temperature, it was filtered with suction and washed several times with deionized water and ethanol, and the product was vacuum-dried at 60°C overnight to obtain graphene / graphene-like WS 2 Nanocomposite particles (rGO / GL-WS 2 ).

[0041] Step 3: The prepared rGO / GL-WS 2 , hexachlorocyclotriphosphazene, and bra...

Embodiment 2

[0044] Step 1: Put the WS 2 And NaCl dry mix with the ratio of 1:10 in the ball mill agate grinding bowl mechanochemical treatment 2h (reaction mixture: ball weight ratio is 1:7), the product that obtains the nanostructure is washed thoroughly with water, and is carried out drying at 100 ℃, Then ultrasonic 30min to prepare graphene-like WS 2 .

[0045] Step 2: Combine graphene oxide and graphene-like WS 2 Mixed and added to 200mL ethanol at a mass ratio of 1:1, ultrasonicated at 180W for 30min, transferred to a high-temperature and high-pressure hydrothermal reactor, and added with 3mL hydrazine hydrate, sealed and reacted at 220°C for 24h. After cooling to room temperature, it was filtered with suction and washed several times with deionized water and ethanol, and the product was vacuum-dried at 60°C overnight to obtain graphene / graphene-like WS 2 Nanocomposite particles (rGO / GL-WS 2 ).

[0046] Step 3: The prepared rGO / GL-WS 2 , hexachlorocyclotriphosphazene, and branc...

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Abstract

The invention relates to a graphene / graphene analogue WS2 / bismaleimide composite material modified by cyclotriphosphazene polymer and a preparation method thereof. Firstly, WS2 is stripped into grapheme analogue WS2 by using methods of low-energy ball milling and ultrasonic, then, the grapheme analogue WS2 is added into a high-temperature high-pressure reaction kettle together with an oxidized graphite, a proper amount of hydrazine hydrate is added and a pot hydrothermal method is used to prepare the graphene / graphene analogue WS2. Then, the graphene / graphene analogue WS2, phosphonitrilic chloride trimer, and branched polyethyleneimine are used as a raw materials, triethylamine is used as an acid-binding agent, and the graphene / graphene WS2 modified by cyclotriphosphazene polymer is prepared by using an in-situ template method. Finally, the composite material is prepared by mixing the graphene / graphene WS2 modified by cyclotriphosphazene polymer, diphenylethane dimaleimide and diallylbisphenol A in a certain proportion. The prepared composite material has good interface bonding strength, and excellent mechanical property and tribology performance.

Description

technical field [0001] The invention belongs to the field of science and technology of advanced composite materials, and relates to a graphene / graphene-like WS modified by a cyclotriphosphazene polymer 2 / bismaleimide composite material and preparation method. Background technique [0002] Graphene, a new type of two-dimensional layered material, has become a research hotspot in recent years due to its excellent tensile strength, high flexibility, good thermal conductivity, mechanical properties and good electron transport properties. As a solid lubricant, graphene can greatly improve the friction performance of composite materials. For example, Wang Han et al [Compos.PartA.Appl.S 67(2014) 268-273] added multilayer graphene as a filler to polyvinyl chloride to prepare composite materials, and found that the presence of multilayer graphene can significantly reduce Coefficients of friction and wear rates of composite materials. As another example, a solvent-free graphene n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K9/02C08K9/04C08K3/30C08K3/04
CPCC08K3/30C08K9/02C08K9/04C08K2003/3009C08K2201/011C08K2201/014C08K3/042C08L79/08
Inventor 颜红侠陈争艳郭留龙李林
Owner NORTHWESTERN POLYTECHNICAL UNIV
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