Injection-compression-compression (I-C-C) process was studied to prepare polypropylene/ short carbon fiber (PP/SCF) composites. The effects of I-C-C process on the conductive network, fiber distribution and electric conductivity were investigated. The distance between conductive particles of the blending system was reduced by two-stage compression, so that the conductive network was compacted. The forming of dense conductive network significantly improved the conductivity. Moreover, I-C-C can effectively interfere with the fiber flow direction to enhance the conductivity of the infiltrated surface. Combined with the microstructure and electrical conductivity, the applicable mold temperature and compression speed range of the I-C-C process for PP can be obtained. The results showed that the electrical conductivity of the I-C-C prepared PP/SCF was increased up to 5 orders of magnitude higher than that of ordinary injection molding. Conductivity of PP/ 10 wt% SCF conductivity reached 3.7S/m, PP /15 wt% SCF reached 33S/m, and PP/ 20% SCF reached 150S/m.

研究了注射-压缩-压缩（ICC）工艺来制备聚丙烯/短碳纤维（PP / SCF）复合材料。研究了ICC工艺对导电网络，纤维分布和电导率的影响。共混体系的导电颗粒之间的距离通过两级压缩而减小，从而使导电网络致密。致密的导电网络的形成显着提高了导电性。此外，ICC可以有效地干扰纤维的流动方向，从而提高渗透表面的电导率。结合微结构和电导率，可以获得适用于PP的ICC工艺的模具温度和压缩速度范围。结果表明，ICC制备的PP / SCF的电导率比普通注塑成型提高了5个数量级。PP / 10 wt％SCF的电导率达到3.7S / m，PP / 15 wt％SCF的电导率达到33S / m，PP / 20％SCF的电导率达到150S / m。