A kind of preparation method of graphene composite film with high thermal conductivity
A graphene composite and high thermal conductivity technology, which is applied in chemical instruments and methods, carbon compounds, semiconductor/solid-state device components, etc., can solve problems such as complexity, poor product controllability, unfavorable large-scale production, etc., and achieve simplified preparation Process, improve production efficiency, shorten the effect of carbonization and graphitization time
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Embodiment 1
[0032] Add m-phenylenediamine and pyromellitic dianhydride to N,N-dimethylformamide, stir evenly until completely dissolved to obtain solution A; take 1g of single-layer graphene oxide and disperse it in 10ml of the solution , under ultrasonic conditions at 40°C for 10min to obtain an orange-yellow graphene oxide colloidal dispersion B; keep stirring in a water bath at 50°C, and mix the solution A in step 1 and the dispersion B in step 2 evenly , form a stable block system C; place the polytetrafluoroethylene mold that has been sprayed with a release agent in an oven, and add some block system C in step 3 to the polytetrafluoroethylene mold , cured and dried at 100°C for 0.5h; the dried product D was obtained; the dried product D in step 4 was ablated with a plasma ablation machine, and after 70S ablation at 2500°C, a high thermal conductivity After the graphene composite film is naturally cooled to room temperature, the heat-conducting film is rolled using a hot press to obta...
Embodiment 2
[0035] Add some p-phenylenediamine and pyromellitic dianhydride in N,N-dimethylformamide, wherein the molar ratio of p-phenylenediamine and pyromellitic dianhydride is 10:11, stir evenly until Completely dissolve to obtain solution A; take 0.1g single-layer graphene oxide, disperse it in 10ml of solution, and ultrasonicate for 10min under ultrasonic conditions at 40°C to obtain orange-yellow graphene oxide colloidal dispersion B; in a water bath at 50°C Stir continuously in the pot, mix the solution A in step 1 and the dispersion B in step 2 evenly to form a stable block system C; place the polytetrafluoroethylene mold that has been sprayed with a release agent in an oven In the process, add some block system C in step 3 to the polytetrafluoroethylene mold, and perform curing and drying at 100°C for 1 hour; obtain the dried product D; use a plasma ablation machine to process the dried product D in step 4 Ablation, after 70S ablation at 2800°C, a graphene composite film with hi...
Embodiment 3
[0038]Add some p-phenylenediamine and pyromellitic dianhydride in N,N-dimethylformamide, wherein the molar ratio of m-phenylenediamine and pyromellitic dianhydride is 1:1, stir evenly until Completely dissolve to obtain solution A; take 0.5g single-layer graphene oxide, disperse it in 10ml of solution, and ultrasonicate for 10min under ultrasonic conditions at 40°C to obtain orange-yellow graphene oxide colloidal dispersion B; in a water bath at 50°C Stir continuously in the pot, mix the solution A in step 1 and the dispersion B in step 2 evenly to form a stable block system C; place the polytetrafluoroethylene mold that has been sprayed with a release agent in an oven In the process, add some block system C in step 3 to the polytetrafluoroethylene mold, and perform curing and drying at 100°C for 1 hour; obtain the dried product D; use a plasma ablation machine to process the dried product D in step 4 Ablation, after 70S ablation at 2800°C, a graphene composite film with high ...
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