Additive manufacturing such as selective laser sintering (SLS) offers the strategies to create 3D complex components with desirable mechanical, electrical and thermal properties using the composite powders as feeding materials. This work proposes a new fabrication approach to preparing carbon nanotube (CNT) composite powders and utilizes them for SLS process. As compared with the hot-compression process, the SLS process could offer an effective method to fabricate the CNT/Polymer composite with electrically conductive segregated structures. At a small loading range of CNTs (<1 wt%), the laser-sintered composites exhibit significant improvements in the electrical conductivity up to anti-static and conductive range qualifying the applications in automobile and aerospace. However, the enhancement in thermal conductivity of laser-sintered composites is not comparable with that of hot-compressed ones. The process-structure-property relationships are further investigated to study the different processes induced microstructures and the underlying mechanism of thermal and electrical performances.

诸如选择性激光烧结（SLS）之类的增材制造提供了使用复合粉末作为进料来创建具有所需机械，电和热性能的3D复杂组件的策略。这项工作提出了一种制备碳纳米管（CNT）复合粉末的新制造方法，并将其用于SLS工艺。与热压工艺相比，SLS工艺可以提供一种有效的方法来制造具有导电隔离结构的CNT /聚合物复合材料。在较小的CNT负载范围（<1 wt％）下，激光烧结的复合材料在抗静电性和导电性范围内的导电性方面均表现出显着的提高，从而满足了在汽车和航空航天领域的应用要求。然而，激光烧结复合材料的热导率提高与热压复合材料的热导率无法相比。进一步研究了过程-结构-性质的关系，以研究不同过程引起的微观结构以及热和电性能的潜在机理。