Preparation method of high strength graphene based composite paper

A graphene-based, composite paper technology, applied in the direction of graphene, chemical instruments and methods, carbon compounds, etc., can solve the problems of large wetting angle and less functional groups on the surface of carbon fibers, and achieve easy uniformity, less introduction of impurities, and reduction The effect of low temperature

Inactive Publication Date: 2017-06-20
JILIN UNIV
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Problems solved by technology

However, there are few functional groups on the surface of carbon fibers and a large wetting angle, so surface treatment is often required before combining with the matrix.

Method used

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  • Preparation method of high strength graphene based composite paper
  • Preparation method of high strength graphene based composite paper
  • Preparation method of high strength graphene based composite paper

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Embodiment

[0040] The experimental conditions and parameters of a preparation method of high-strength graphene-based composite paper are as follows:

[0041] 1) Weigh 3g flake graphite, pour 360mL concentrated sulfuric acid (98%wt) and 40mL concentrated phosphoric acid (85%wt) in turn, add 3g, after fully stirring, slowly add 18g potassium permanganate; ℃, stir vigorously for 12 hours; cool to room temperature, pour the solution in the Erlenmeyer flask on 400g of ice, slowly add hydrogen peroxide (30%wt) until no bubbles are generated; after centrifugation in a high-speed centrifuge, remove the lower layer of sediment, and wash with 10% dilute hydrochloric acid three times, and then centrifuged with deionized water until the pH value was neutral. Obtain graphene oxide colloid.

[0042] 2) Take several glass slides, place them on the bottom of the petri dish, add the piranha lotion prepared according to concentrated sulfuric acid:concentrated phosphoric acid = 4:1, heat in a water bath a...

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Abstract

The invention relates to a preparation method of a high strength graphene based composite paper. Generally, the method includes: adopting a graphene oxide colloid and chopped carbon fiber mixed solution as the precursor to carry out hydrothermal reaction with a silver-ammonia solution, conducting in-situ one-step compounding of silver nanoparticles on the graphene oxide and carbon fiber surface, and then performing drying and low-temperature stepped heating reduction treatment so as to obtain a graphene / silver / carbon fiber three-phase composite paper. By controlling the ratio of the composite carbon fiber, the method provided by the invention synthesizes the graphene based three-phase composite paper with optimum mechanical properties and enhanced hydrophobicity and electrical conductivity. Compared with uncompounded graphene oxide paper, the electrical conductivity is increased by two orders of magnitude, and the hydrophobicity is strengthened. Compared with graphene / silver two-phase composite paper, the mechanical strength is increased by 80%. The composite paper can be used as a Raman enhanced substrate and a novel paper material. The method is simple and is easy for control, and is convenient for industrial production. The prepared self-support composite paper has broad application prospects in food safety, biomedicine, packaging materials and other fields.

Description

[0001] Technical field: [0002] The present invention relates to a preparation method of high-strength graphene-based composite paper. Generally speaking, the present invention uses the mixed solution of graphene oxide colloid and chopped carbon fiber as the precursor to react with the silver ammonia solution hydrothermally, and the surface of GO and carbon fiber A method for preparing a graphene / silver / carbon fiber composite paper by in-situ one-step compounding of Ag nanoparticles, followed by drying and low-temperature stepped heating reduction treatment. [0003] Background technique: [0004] Since Geim et al first obtained single-layer graphene from pyrolytic graphite by tape stripping method in 2004, graphene has been increasingly used in physics, chemistry, and materials for its unique two-dimensional nanostructure and excellent physical, chemical, and biological properties. Aroused attention in the fields of science and biology. Compared with nano-films or ultra-film...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/194C01B32/198
CPCC01B2204/22C01P2002/72C01P2002/82C01P2002/84C01P2004/03
Inventor 王欣张强刘洋刘广宇慕佳轩邹洪帅
Owner JILIN UNIV
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