Method for preparing graphene/polystyrene conductive composite material
A conductive composite material, polystyrene technology, applied in the field of preparation of graphene/polystyrene conductive composite materials, to achieve low conductive percolation value, improve thermal stability, and expand the effect of application fields
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[0019] A kind of preparation method of graphene / polystyrene conductive composite material, adopts following steps:
[0020] Step 1: Preparation of graphene oxide (GO) powder:
[0021] Slowly add 200mL of concentrated sulfuric acid to a beaker containing 8.0g of graphite, stir magnetically in an ice-water bath for 10min, add 24.0g of potassium permanganate, and stir for 1h; then, transfer the beaker to a water bath at 30°C, stir for a medium-temperature reaction for 10h ; add 200mL H 2 O, stirred for 30min to complete the high temperature reaction; add 600mL H 2 O and 27mL H 2 o 2 , stirred and cooled to room temperature, centrifuged with HCl, washed to remove SO 2 4- Plasma; Finally, the mixture was subjected to H 2 O washing, ultrasonic stripping, centrifugation and freeze-drying to obtain brown GO powder;
[0022] Step 2: Preparation of cationic polystyrene (PS) by dispersion polymerization + )Microspheres:
[0023] To equipped with stirring rod, condenser tube, N...
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