Preparation and properties of thermally conductive and antistatic potassium titanate whiskers filled polypropylene composites

Conductive potassium titanate whiskers(PTWs) were used as a novel filler to prepare PTWs/ polypropylene(PP) composites by hot-press forming technology,for which the good thermally conductive and antistatic properties were obtained.The effects of PTWs content on thermal conductivity,volume resistivity,mechanical properties and formability of the PTWs/PP composites were investigated.The results show that with the increase of the PTWs content,thermal conductivity of the PTWs/PP composites increases whi1e volume resistivity decreases,besides,tensile and flexural strength of the PTWs/PP composites exhibits a tendency to increase firstly and then decrease,and the melt flow rate exhibits a tendency to increase.The PTWs/PP composite filled with 0.38% of PTWs presents the maximum thermal conductivity with the value of 0.5105 W·m-1·K-1 and the minimum volume resistivity of 109 Ω·cm,which meets the requirements for antistatic materials.