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采用快速离子萃取法制备了SiO2纳米类流体。采用FTIR、TG、DSC、TEM及流变测试等分析手段对SiO2纳米类流体进行了系统的表征。结果发现,快速离子萃取法能够保证反应过程中离子交换完全,并能制得具有室温流动性、稳定单分散性以及较高导电性的SiO2纳米类流体。通过将SiO2纳米类流体以不同份数与聚氯乙烯(PVC)熔融共混得到了不同纳米类流体含量的SiO2纳米类流体/PVC复合材料,并对其介电性能和导电性能进行了表征。结果表明,SiO2纳米类流体具有良好的抗静电性能。
SiO2 nanofluids were prepared by rapid ion extraction. The SiO2 nanofluids were systematically characterized by FTIR, TG, DSC, TEM and rheological analysis. The results showed that the rapid ion extraction method can ensure complete ion exchange during the reaction and can produce SiO2 nanofluid with room temperature fluidity, stable monodispersity and high conductivity. SiO2 nanofluid / PVC composites with different nanofluids content were obtained by melt blending SiO2 nanofluids with polyvinyl chloride (PVC) in different fractions, and their dielectric properties and electrical conductivity were characterized. The results show that SiO2 nanofluids have good antistatic properties.