3D-printed PEEK-carbon fiber (CF) composites: Structure and thermal properties

Stepashkin, D. I. Chukov, F. S. Senatov, A. I. Salimon, A. M. Korsunsky, S. D. Kaloshkin

Результат исследований: Вклад в журналСтатьярецензирование

137 Цитирования (Scopus)

Аннотация

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.

Язык оригиналаАнглийский
Страницы (с-по)319-326
Число страниц8
ЖурналComposites Science and Technology
Том164
DOI
СостояниеОпубликовано - 18 авг. 2018

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