WANG Linlin, LENG Jinsong, DU Shanyi. 4D printing of shape memory polymers and their composites: research status and application progress[J]. 2020, 52(6): 227-244.
DOI:
WANG Linlin, LENG Jinsong, DU Shanyi. 4D printing of shape memory polymers and their composites: research status and application progress[J]. 2020, 52(6): 227-244.DOI: 10.11918/202003059.
4D printing of shape memory polymers and their composites: research status and application progress
Shape memory polymer is a kind of intelligent material which can change shapes under the stimulation of external environment. The advent of 4D printing technology promotes the development of smart materials and brings new opportunities for further research in the fields of minimally invasive medical
intelligent robots
flexible electronics and other high-tech industries. In this paper
the emerging and development as well as five new polymer printing technologies of 4D printing technology are introduced firstly. Then
the research progress of shape memory polymers and their composites are demonstrated in the perspectives of thermal
electrical
magnetic and optical driving. Next
we summarize the preparation and properties of shape memory polymers and their composites
as well as the potential applications of the printed structures in biomedical
aerospace
intelligent devices and biomimetic fields. Finally
the problems of 4D printing are pointed out in four aspects of technology
material
driving mode and application verification and the future research directions are discussed.