Preparation method of graphene/polystyrene conductive composite material
A conductive composite material and polystyrene technology are applied in the field of preparation of graphene/polystyrene conductive composite materials to achieve the effects of high electrical conductivity, improved thermal stability and low conductive percolation value
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[0019] A preparation method of graphene / polystyrene conductive composite material adopts the following steps:
[0020] Step 1: Preparation of graphene oxide (GO) powder:
[0021] Slowly add 200 mL of concentrated sulfuric acid to a beaker containing 8.0 g of graphite, stir in an ice-water bath for 10 minutes, add 24.0 g of potassium permanganate, and stir for 1 hour; then, transfer the beaker to a 30°C water bath and stir for a medium temperature reaction for 10 hours ; Add 200mL H 2 O, stir for 30min, complete the high temperature reaction; add 600mL H 2 O and 27mL H 2 O 2 , Stir and cool to room temperature, centrifuge with HCl and wash to remove SO 2 4- Plasma; Finally, the mixed liquid passes through H 2 O washing, ultrasonic peeling, centrifugation and freeze drying, the brown GO powder was obtained.
[0022] Step 2: Disperse polymerization to prepare cationic polystyrene (PS + )Microspheres:
[0023] To be equipped with stirring rod, condenser tube, N 2 Add 520g of 90...
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