LIU Chunbao, XU Hui, LIANG Yunhong, ZHANG Lan, LIN Zhaohua. Study on 4D Printing and Deformations of Bionic Light Response Shape Memory Materials[J]. Aeronautical Manufacturing Technology, 2023, 66(4): 26-34.
For the advanced scientific research in extreme environments such as deep space
deep sea
deep earth and polar
the material-structure-functional integrated additive manufacturing for fabricating intelligent components
that is
4D printing technology was used. The multilayer grid structure of wood was treated as bionic model. The polylactic acid
polycaprolactone
and graphene oxide were treated as the matrix
adding phase and light conversion agents. The bionic smart material with light-responsive shape memory properties was prepared via 3D printing technology of direct writing. The response mode
deformation process
mechanical strength
and deformation temperature of the smart material were researched. The results show that the bionic smart material can return to its original shape in response to light or temperature. The temperature of deformation is lowered to around 55 ℃. Under the near-infrared light response
shape fixed rate is as high as 96%
shape recovery rate is 93%
and the fastest shape recovery time is 9 s. Finally
the application to the bionic deployable structure and the optical response cladding release device were demonstrated
which can achieve light-driven deployment on demand and controlled sequential release functions. It provided an effective bionic new thought and method for solving the problems of accurate selection
remote control
and rapid response in aerospace deformable structures.