Carbon Nanotubes / Ldpe Nanocomposites

CNTs (Carbon nanotubes) possessing good conductivity and mechanical property and nano-effect to which their one-dimentional nanostructure leading, which not only made them play many important roles in preparing composites with super strong mechanical property and developing advanced polymer composites with conductivity and photoelectricity, but also had broaden applied space in such aspects as chemical engineering , machinery auto industry and aero technology. CNTs were consist of single-walled carbon nanotubes(SWNTs)and mullti-walled carbon nanotubes (MWNTs).MWNTs/LDPE composites used LDPE as matrix and MWNTs as intensifier in this work. MWNTs were dispersed ideally through supersonic, stir and banburying. The degree of dispersion was tested and probed with the help of FE1 sirion SEM. at the same time the effect shaping process on dispersion was analysised. The surface resistance and volume resistance of sample were measured by ZC-36 Megohmmeter and the corresponding resistivity could be calculated. The tensile strength and elastic modulus of specimen were characterized by tensile machine. The effect different content of MWNTs on conductivity and mechanical property of composites and its laws were discussed.We had already realized dispersion technology of MWNTs were effective and proved that with the increase of MWNTs contens MWNTs/LDPE composites hold good electricity and mechanical performance .