Preparation of carbon fiber/graphene oxide/epoxy resin prepreg and carbon fiber composite material
A technology of epoxy resin and composite materials, which is applied in the field of preparation of composite materials, can solve the problems of high brittleness of materials, poor bonding between cured products and carbon fibers, and achieve the effect of simple methods
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Embodiment 1
[0026] Weigh 1.5g of NaNO3 solid and dissolve it in 69ml of concentrated sulfuric acid with a concentration of 98%. Put the mixed solution in an ice-water bath and stir it magnetically to fully dissolve the NaNO3 solid; weigh 3g of natural graphite and add it to the mixed solution and stir for 15 minutes Weigh 9g of potassium permanganate, slowly add it to the mixed solution in 5 minutes, stir for 20 minutes, keep the temperature below 20°C in this process, and gradually increase the temperature in the last 10 minutes; raise the temperature to 35°C, add Plastic wrap, continue to stir for 1 hour; add 138ml of deionized water to raise the temperature to above 95°C, and continue to react for 15 minutes; continue to add 420ml of deionized water preheated to 50°C in advance, and then add 30ml of hydrogen peroxide to terminate the reaction, and the solution turns bright yellow Then the hot slurry is centrifuged and filtered, and washed with 5% dilute hydrochloric acid solution, and c...
Embodiment 2
[0032] Weigh 1.5g of NaNO3 solid and dissolve it in 69ml of concentrated sulfuric acid with a concentration of 98%. Put the mixed solution in an ice-water bath and stir it magnetically to fully dissolve the NaNO3 solid; weigh 3g of natural graphite and add it to the mixed solution and stir for 15 minutes ; Weigh potassium permanganate, slowly add it to the mixture for 5 minutes, stir for 20 minutes, keep the temperature below 20°C during this process, and gradually increase the temperature in the last 10 minutes; raise the temperature to 35°C, add fresh-keeping film, continue to stir and react for 1 hour; add deionized water to raise the temperature to above 95°C, and continue to react for 15 minutes; continue to add deionized water preheated to 50°C in advance, and then add hydrogen peroxide to terminate the reaction, and the solution turns bright yellow; then heat The slurry was centrifugally filtered, washed with 5% dilute hydrochloric acid solution, and centrifuged to obtai...
Embodiment 3
[0038] Weigh 1.5g of NaNO3 solid and dissolve it in 69ml of concentrated sulfuric acid with a concentration of 98%. Put the mixed solution in an ice-water bath and stir it magnetically to fully dissolve the NaNO3 solid; weigh 3g of natural graphite and add it to the mixed solution and stir for 15 minutes ; Weigh potassium permanganate, slowly add it to the mixture for 5 minutes, stir for 20 minutes, keep the temperature below 20°C during this process, and gradually increase the temperature in the last 10 minutes; raise the temperature to 35°C, add fresh-keeping film, continue to stir and react for 1 hour; add deionized water to raise the temperature to above 95°C, and continue to react for 15 minutes; continue to add deionized water preheated to 50°C in advance, and then add hydrogen peroxide to terminate the reaction, and the solution turns bright yellow; then heat The slurry was centrifugally filtered, washed with 5% dilute hydrochloric acid solution, and centrifuged to obtai...
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Abstract
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