期刊
POLYMER TESTING
卷 97, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2021.107149
关键词
3D printing; Carbon-fiber-reinforced polyether ether ketone; Crystallinity; Deformation; Mechanical properties
资金
- National Natural Science Foundation of China [51835010]
- Independent Innovation Plan of Xi'an Jiaotong University, China [PY3A080]
This study proposes a novel process to control the crystallinity of 3D-printed CF/PEEK composites, affecting their mechanical properties to resemble those fabricated via injection molding. This work is of positive significance for promoting the application of 3D printed PEEK composite materials in aerospace and orthopedic implants.
A change in the crystallinity of short-carbon-fiber-reinforced polyether ether ketone (CF/PEEK) composites has a significant effect on the shrinkage deformation characteristics and mechanical properties of the components that are fabricated using 3D printing of CF/PEEK composites. In this study, we propose a novel process for controlling the crystallinity of 3D-printed CF/PEEK composites. First, components of a CF/PEEK composite with low crystallinity and warping deformation were 3D printed at a normal ambient temperature (20 degrees C). Second, the crystallinity and mechanical properties of the composite were quantitatively controlled via a recrystallization process. Finally, the mechanical properties of the CF/PEEK composite (10 wt%) were found to be similar to those of the materials fabricated via the injection molding process. This research work is of positive significance to promote the application of 3D printed PEEK composite materials in the field of aerospace and orthopedic implants.
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