4D Printing of Shape Memory Polymer via Liquid Crystal Display Stereolithography

Wubing Shan; Yifan Chen; Hu Mo; Shigang Qin; Peng Liu

doi:10.20944/preprints202007.0163.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 7 July 2020 / Approved: 9 July 2020 / Online: 9 July 2020 (01:58:31 CEST)

In this study, we report a new epoxy acrylate based shape memory polymer(SMP) fabricated by Liquid crystal display (LCD) Stereolithographic 3D printing. The printed 3D object has a high resolution and high transparency in visible light region. The uniaxial tensile tests showed enhanced tensile toughness and tunable mechanical properties. The fix-recovery and cycle tests indicated high shape recovery properties including high shape recovery rate and excellent cycling stability. In addition, a smart electrical valve actuator was fabricated that can be used in fast heat or electricity responsive electrical circuits. LCD 3D printing provides a low-cost and high efficient way to fabricate fast responsive SMP, which can be used in wide applications in various fields on aerospace engineering, biomedical devices, soft robots and electronic devices.

Shape memory polymer; LCD; Transparency; High shape recovery rate; Fast responsive

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4D Printing of Shape Memory Polymer via Liquid Crystal Display Stereolithography

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