Study on Thermo-Mechanical Behaviors of Shape Memory Polymer

Bo Zhou; Yan Ju Liu; Jin Song Leng; Tao Li

doi:10.4028/www.scientific.net/KEM.419-420.497

Paper Titles

Predictions of Springback of Strain-Hardening Material in U-Shaped Bending Process
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Rapid Manufacturing of Metal-Ceramic Composites
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Dynamic Analysis on Underlay Microstructure for Cu/Low-k Wafer during Wire Bonding
p.489

Comprehensive Hygro-Thermo-Vapor Pressure Model for CMOS Image Sensor
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Study on Thermo-Mechanical Behaviors of Shape Memory Polymer
p.497

Material Point Method in Impact Engineering Problems
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Research on Superfine Wood Powder Disintegrator with Multi-Granularity Used in Power Generation
p.505

Simulation of the Flow Behavior of Thin Polymer Film during Nanoimprint Lithography Based on a Viscoelastic Model
p.509

Elastoplastic Instability of the Double-Arc Ring-Stiffened Cylindrical Shell
p.513

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Study on Thermo-Mechanical Behaviors of Shape Memory Polymer

Abstract:

Dynamic mechanical analysis (DMA) tests are conducted on styrene-based shape memory polymer(SMP) to investigate its glass transition behaviors. The tensile tests at various temperatures are operated to detect the stress-strain relationship of styrene-based SMP. The material elastic moduli and yielding limits at 25oC, 30oC, 40oC, and 50oC are determined according to the results of tensile test. A new material parameter function is supposed to express the glass transition behavior of styrene-based SMP. The shape memory thermo-mechanical cycle of styrene-based SMP is numerically simulated by Tobushi’s constitutive equation coupled with the new material parameter function. Numerical results show the new material parameter function can express the thermo-mechanical properties of styrene-based SMP effectively.