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

Inactive Publication Date: 2018-02-27
SHAANXI SHENGMAI PETROLEUM
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Problems solved by technology

However, these studies are mainly limited to graphene-based inorganic hybrid materials. In view of the high viscosity of

Method used

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Embodiment Construction

[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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Abstract

The invention aims to propose a preparation method of a graphene/polystyrene conductive composite material. A kind of preparation method of graphene/polystyrene conductive composite material, adopt following steps: Step 1: the preparation of graphene oxide (GO) powder; Step 2: dispersion polymerization prepares cationic polystyrene (PS+) microsphere; Step 3 : Preparation of GNS/PS composites. The invention can inhibit the self-aggregation and induction of GNs and the selective distribution of graphene on the surface of polymer particles, forming a perfect three-dimensional graphene network skeleton; the relatively ordered three-dimensional structure of GNs constitutes a free electron conduction path, and GNs/ The PS composite material exhibited extremely low conductive percolation value and high conductivity; the addition of graphene improved the thermal stability of PS, and the decomposition temperature of PS increased by 13.5 °C. This facile method provides a new idea for the construction of ordered inorganic filler microstructures in high-viscosity polymer systems, which is conducive to further expanding the application field of graphene-based conductive composites.

Description

technical field [0001] The invention relates to the technical field of material chemical preparation, in particular to a preparation method of a graphene / polystyrene conductive composite material. Background technique [0002] As a new type of carbon-based material, graphene has attracted extensive research in scientific and application fields due to its unique two-dimensional structure, good chemical stability, and excellent mechanical, optical, thermal, and electrical properties, and is considered to be the next-generation material. A generation of the most ideal structural and functional reinforcement materials. In recent years, the research on adding graphene nanosheets (GNs) as a conductive medium to polymers to prepare conductive composites has made rapid progress, and graphene-based conductive composites are also widely used in antistatic, sensors, capacitors, etc. field. [0003] The performance of graphene-based conductive composites not only depends on the degree...

Claims

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Application Information

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IPC IPC(8): C08L51/00C08K3/04C08F257/02C08F220/34
CPCC08K3/04C08F257/02C08K2201/001C08L2201/08C08L2205/18C08L51/003C08F220/34
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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