In this paper, the high temperature polyimide-based shape memory polymers were exposed to simulated vacuum
thermal cycling environments from −170 °C to +170 °C up to 600 hours for an accelerated irradiation. The effects of
vacuum thermal cycling on optical transmittance, stretchable shape memory effects, thermomechanical and thermal
properties were evaluated. Even if they experienced 600 hours of vacuum thermal cycling irradiation, the glass
transition temperatures (Tg), optical transmittance, thermal stability, and the shape memory effects had no significant
changes. The results are quite instructive in selecting and evaluating material for aerospace structures. polyimide-based
shape memory polymers also shows great potential application in large-area space flexible electronics.
Hui Gao, Longnan Huang, Xin Lan, Liwu Liu, Yanju Liu, and Jinsong Leng, "The research of vacuum thermal cycling resistant transparent shape memory polyimide and its application in space flexible electronics," Proc. SPIE 10165, Behavior and Mechanics of Multifunctional Materials and Composites 2017, 101651B (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 28, 2017; Published: 11 April 2017); https://doi.org/10.1117/12.2259938.
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