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A molecular dynamics investigation of the deformation mechanism and shape memory effect of epoxy shape memory polymers

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Abstract

Following deformation, thermally induced shape memory polymers (SMPs) have the ability to recover their original shape with a change in temperature. In this work, the thermomechanical properties and shape memory behaviors of three types of epoxy SMPs with varying curing agent contents were investigated using a molecular dynamics (MD) method. The mechanical properties under uniaxial tension at different temperatures were obtained, and the simulation results compared reasonably with experimental data. In addition, in a thermomechanical cycle, ideal shape memory effects for the three types of SMPs were revealed through the shape frozen and shape recovery responses at low and high temperatures, respectively, indicating that the recovery time is strongly influenced by the ratio of E-51 to 4,4’-Methylenedianiline.

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Authors and Affiliations

  1. Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing, 100044, China

    Hua Yang, ZhengDao Wang & YaFang Guo

  2. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China

    XingHua Shi

Authors
  1. Hua Yang
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  2. ZhengDao Wang
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  3. YaFang Guo
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  4. XingHua Shi
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Corresponding authors

Correspondence to YaFang Guo or XingHua Shi.

Additional information

Recommended by YouShi Hong (Associate Editor-in-Chief)

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Yang, H., Wang, Z., Guo, Y. et al. A molecular dynamics investigation of the deformation mechanism and shape memory effect of epoxy shape memory polymers. Sci. China Phys. Mech. Astron. 59, 634601 (2016). https://doi.org/10.1007/s11433-015-5758-4

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  • DOI: https://doi.org/10.1007/s11433-015-5758-4

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