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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20nm,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4.6×107Ω.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4.1×104Ω.cm。
Graphite - polyvinyl chloride (PVC) composite powder was successfully prepared by solid - state shear compounding technology, which realized the delamination of graphite and the nano - dispersion in PVC matrix and the anti - static modification of PVC. The structure of graphite-PVC / PVC composites was characterized by XRD, SEM and TEM, and their antistatic properties were also studied. The results show that the graphite layer thickness of about 20nm, diameter ratio of more than 10. The conductive properties of graphite-PVC / PVC composites prepared by solid-state shear milling have been greatly improved. In the graphite mass fraction of 2%, the surface resistivity of 4.6 × 107Ω.cm, has reached the requirements of antistatic materials to achieve a low filling. In the graphite mass fraction of 10%, the lowest surface resistivity of 4.1 × 104Ω.cm.