Carbon fiber-reinforced resin composite material and preparation method thereof
A technology for reinforcing resin-based and composite materials. It is applied in the field of composite materials. It can solve the problems that cyanate resin does not improve manufacturability and reduce costs, and achieve the effect of contributing to overall performance, low price, high strength and reactivity
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Embodiment 1
[0033] 5 g of natural graphite was added to a mixed solution containing 150 mL of 98% concentrated sulfuric acid and 50 mL of fuming nitric acid, the mixture was stirred at room temperature, and then the mixture was poured into water and filtered to collect the solid. The obtained solid was washed with deionized water and then dried at 60°C to obtain a solid product. After drying, it was thermally expanded at 1000°C for 30 seconds to obtain expanded graphite. Add expanded graphite, 4.2 g of potassium persulfate and 6.2 g of phosphorus pentoxide obtained above to 300 mL of concentrated sulfuric acid solution, mix and stir the mixture at 80°C for 6 hours, then cool to room temperature, and rinse the mixture with deionized water After diluting, vacuum filter and filter with a polycarbonate membrane, and dry naturally to obtain pre-oxidized expanded graphite. Finally, pre-oxidized expanded graphite was added to 200mL of concentrated sulfuric acid at 0°C, and then 15g of potassium...
Embodiment 2
[0038] 2 g of natural graphite was added to a mixed solution containing 150 mL of 98% concentrated sulfuric acid and 50 mL of fuming nitric acid, the mixture was stirred at room temperature, and then the mixture was poured into water and filtered to collect the solid. The obtained solid was washed with deionized water and then dried at 60°C to obtain a solid product. After drying, thermally expand at 1000°C for 10 seconds to obtain expanded graphite. Add expanded graphite, 4.2 g of potassium persulfate and 6.2 g of phosphorus pentoxide obtained above to 300 mL of concentrated sulfuric acid solution, mix and stir the mixture at 80°C for 6 hours, then cool to room temperature, and rinse the mixture with deionized water After diluting, vacuum filter and filter with a polycarbonate membrane, and dry naturally to obtain pre-oxidized expanded graphite. Finally, pre-oxidized expanded graphite was added to 200mL of concentrated sulfuric acid at 0°C, and then 15g of potassium permanga...
Embodiment 3
[0043] 10 g of natural graphite was added to a mixed solution containing 150 mL of 98% concentrated sulfuric acid and 50 mL of fuming nitric acid, the mixture was stirred at room temperature, and then the mixture was poured into water and filtered to collect the solid. The obtained solid was washed with deionized water and then dried at 60°C to obtain a solid product. After drying, it is thermally expanded at 1000 degrees for 60 seconds to obtain expanded graphite. Add expanded graphite, 4.2 g of potassium persulfate and 6.2 g of phosphorus pentoxide obtained above to 300 mL of concentrated sulfuric acid solution, mix and stir the mixture at 80°C for 6 hours, then cool to room temperature, and rinse the mixture with deionized water After diluting, vacuum filter and filter with a polycarbonate membrane, and dry naturally to obtain pre-oxidized expanded graphite. Finally, pre-oxidized expanded graphite was added to 200mL of concentrated sulfuric acid at 0°C, and then 15g of pot...
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