材料科学
偷看
复合材料
复合数
多孔性
各向异性
热导率
制作
3D打印
热的
纤维
聚合物
病理
气象学
物理
医学
替代医学
量子力学
作者
Andrey A. Stepashkin,Dilyus I. Chukov,Ф.С. Сенатов,Alexey I. Salimon,Alexander M. Korsunsky,S.D. Kaloshkin
标识
DOI:10.1016/j.compscitech.2018.05.032
摘要
CF-PEEK composites were manufactured by 3D-printing using a novel FDM methodology and customized printer and were compared with their cast counterparts. The characterization of composite thermal properties in the range 25–300 °C revealed that 3D-printed CF-PEEK composites manifest 25–30% lower thermal conductivity than cast composites. Short carbon fibers used for reinforcement showed orientation along the polymer flow both in cast and 3-D printed samples causing the anisotropy of thermal properties. The hierarchical nature of 3DP CF-PEEK porosity was observed by SEM imaging, which allowed the identification of large scale inter-layer gaps and cracks, and fine scale intra-layer defects that are likely to be induced by the thermal and mechanical gradients within the deposit that arise during fabrication. Purposeful lay-up of long continuous carbon yarns during 3D-printing opens a way to fabricate tailored mechanical parts with desired anisotropy of properties.
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