High Performance Antistatic HDPE Composites with Bridging Effect of Hybrid Carbon Black and Multi‐Walled Carbon Nanotubes Fillers

Carbon black (CB) is an electrical and reinforced material, which is used for many industrial applications; however, the serious aggregation of CB requires the addition of large amounts for the composites to meet the requirements of the antistatic properties. Multi‐walled carbon nanotubes (MWCNTs) are linear high electrical materials, and they are also easy to wrap with each other. Therefore, considering different shapes of CB and MWCNTs, the MWCNTs are selected as the bridge to connect CB to decrease the added amount of CB in the composites, and the results show that the bridge effect is efficient enough. The process uses a one‐step melt blending method, which is very easy and environmentally friendly. When 1 wt% CB and 0.5 wt% MWCNTs are added into the composites, the surface, and volume resistivity of the composites are much lower than those of the composites by adding 3 wt% CB, due to the bridge effect, fulfilling the antistatic properties of the composites. Multi‐walled carbon nanotubes with small content act as bridges to connect carbon black, which meets the requirements of the antistatic properties while reducing the amount of CB and make the preparation method easier. Antistatic composites are prepared by bridging effect with the addition of 1 wt% CB and 0.5 wt% MWCNTs, using one‐step melt blending method.