Exfoliating interlayer and nanocompositing of graphite with PVC through solid state shear compounding technology
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摘要: 采用固相剪切复合技术成功制备石墨-聚氯乙烯(PVC)复合粉体, 实现了石墨的片层剥离和在PVC基体中的纳米分散及对PVC的抗静电改性。通过XRD、 SEM、 TEM等表征了石墨-PVC/PVC复合材料的结构, 研究了其抗静电性能。结果表明, 石墨的片层厚度约20 nm, 径厚比超过10。固相剪切碾磨技术制备的石墨-PVC/PVC复合材料的导电性能有较大提高。在石墨质量分数为2%时, 表面电阻率为4.6×107 Ω·cm, 已达到了抗静电材料的要求, 实现了低填充。在石墨质量分数为10%时, 表面电阻率达到最低的4.1×104 Ω·cm。Abstract: The graphite-polyvinylchloride(PVC) compounding powders were successfully prepared by solid state shear compounding technology (S3C) at ambient temperature, and then the graphite-PVC/PVC nanocomposites were processed by moulding. The structure and antistatic performance of graphite-PVC compounding powder and nanocomposites prepared through S3C based on pan-milling were investigated by XRD, SEM, TEM and electrical resistivity tests. The results show that the conductivity properties of graphite/PVC nanocomposites prepared through S3C based on pan-milling 20 cycles at ambient temperature are remarkably improved. The surface resistivity of graphite-PVC/PVC nanocomposites with 2% mass fraction of graphite is 4.6×107 Ω·cm. The surface resistivity of graphite-PVC/PVC nanocomposites with 10% mass fraction of graphite reaches lowest as 4.1×104 Ω·cm. The strip flake of graphite particles with thickness less than 20 nm and the aspect ratio of 10 times disperses homogeneously in the PVC matrix.
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Keywords:
- PVC /
- graphite /
- solid state shear compounding technology (S3C) /
- panmilling /
- nanocomposites /
- antistatic
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