Shape memory effect of carbon fibers reinforced PEEK compositeChinese Full Text
ZHU Shijie;ZHANG Jinna;WANG Chaoyang;YANG Xiangtao;WANG Pei;GUO Haiwei;WU Haihong;TONG Liyong;Carbon Fiber Composites International Joint Research Lab in Henan, Henan University of Technology;Zhengzhou Fangstring Advanced Material Science and Technology Company Limited;School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney;
Abstract: In order to improve the application of shape memory polymers in extreme harsh environments, the ultrathin carbon fibers reinforced polyether-ether-ketone（CF/PEEK） composite with 0.036 mm thickness was fabricated by overlapping and hot-pressing technologies, and the shape memory behaviors of the composite under the action of thermal stress were investigated. The results show the shape recovery rate of CF/PEEK composite ultrathin laminate is approximately 100%, and still has above 90% reversion rate after 100 times tests of thermal cycling action at 320℃. The stress-driving deformation mechanism of CF/PEEK composite is explained based on the relationship between temperature and stress-strain. The CF/PEEK composites with variable thickness were designed to simulate the deformation and recovery of complex shapes, containing deep-sea coral, cube and pitcher plant. Using mechanical clamping force during the deformation of CF/PEEK composite, the grasping coin experiment was carried out, which verifies the application feasibility for the active deformed structure of CF/PEEK composite.
Keywords：
PEEK; ultrathin carbon fiber layer; shape memory composite; thermal stress; shape reversion rate;
- DOI：
10.13801/j.cnki.fhclxb.20201229.001
- Series：
(B) Chemistry/ Metallurgy/ Environment/ Mine Industry
- Subject：
Material Science
- Classification Code：
TB332
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