Constructing a network of conductive fillers in polymeric matrix is essential for the preparation of conductive polymer composites. Although the conductivity of the composites could increase remarkably after the percolation threshold, it is still much lower than expected due to a limited self-assembly interaction between filler particles. In this paper, high-performance conductive polymer composites were prepared by the method of Spatial Confining Forced Network Assembly (SCFNA). The compound of homogenous polymer and conductive fillers, prepared by conical twin-screw mixer, was placed in a compression mold with confining space to carry out two-stage compression, free compression and spatial confining compression. The electrical conductivity of the SCFNA prepared polypropylene/short carbon fibers was increased up to 4 orders of magnitude higher than that of by ordinary compounding technology.

在聚合物基体中构建导电填料网络对于制备导电聚合物复合材料至关重要。尽管复合材料的电导率在渗流阈值后可能会显着增加，但由于填料颗粒之间的自组装作用有限，其电导率仍远低于预期。本文通过空间约束强制网络组装（SCFNA）方法制备了高性能导电聚合物复合材料。将由锥形双螺杆混合器制备的均质聚合物和导电填料的化合物置于具有限制空间的压缩模具中，以进行两阶段压缩，自由压缩和空间限制压缩。