【摘要】 以径厚为30~45 nm的辉钼矿作为导电填料,采用熔融共混法制备高密度聚乙烯/纳米辉钼矿复合材料,应用高阻计ZC-36、SEM、XRD、TG等研究复合材料的电性能、晶体结构、界面微观形貌、热性能等。研究结果表明:当纳米辉钼矿含量为25%,复合材料的体积电阻率为5.1×109Ωcm,纳米辉钼矿高定向排列,呈链状集合体;复合材料tonset分解温度提高了35℃;辉钼矿的晶体结构发生变化,(002)晶面2θ右移了1.12°,面间距缩小0.257 nm。更多还原

【Abstract】 The composites were prepared by melt-mixing highdensity polyethylene filled with nano-molybdenite.The electrical resistivity,crystal structure,microstructure and thermal properties of the composites were studied by using ZC-36,SEM,XRD,DSC and TG.The results showed that when the composite was filled with 25% nano-molybdenite,the electrical resistivity was 5.1×10⁹ Ω·cm,the temperature for t_onset to decompose increased by 35 ℃ and the diffraction peak of（002） in molybdenite shiftted by 1.12 degrees to the right with 0.257 nm diminution of grating space.更多还原