Abstract
The purpose of this paper is to study the effects of different amounts of multi-walled carbon nanotubes (MWCNT) on the mechanical properties of polypropylene (PP)/magnesium sulfate whisker (MSW) composites for electric meter turnover boxes. To this end, the melt- blending method was adopted to blend the surface-modified MWCNTs with the modified MSW, PP, and maleic anhydride grafted polypropylene (PP-g-MAH), and then two-roll mill was used to obtain the PP/PP-g-MAH/MSW/MWCNT composite materials for electric meter turnover box by melt blending. Finally, the effects of different amounts of modified MWCNT on the mechanical properties of PP/PP-g-MAH/MSW composites for electric meter turnover boxes were compared. The results show that after mixed acid treatment, the MWCNT surface is uniformly dispersed in the composite, and the interface with the polymer matrix is well combined, which can strengthen the composite material; when the mass fraction of MWCNT is high, agglomeration occurs, reducing the mechanical properties of the composite; when the mass fraction is about 0.3%, the mechanical properties of the composites are the best.
