Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 07, 2017 - October 09, 2017
The development of applications using shape memory polymer (SMP) is currently of great interest. The mechanical properties of SMP are different above and below the glass transition temperature Tg. Based on this characteristic, shape recovery and shape fixity appear in SMP. If laminate the SMP with various Tg, we can develop the functionally-graded shape memory polymer (FGSMP) . In the FGSMP, the multistep recovery force can be obtained. In this paper, SMP foams with various Tg were laminated and the compressive properties of FGSMP foam (FGSMPF) were investigated. The results obtained are summarized as follows. (1) FGSMPF was fabricated with two different Tg. The fabricated FGSMPF shows two stepwise deformation behavior corresponding to two different Tg. (2) Deformation property of FGSMPF consist of Tg = 298 K and Tg = 321 K with density of 70 kg/m3 was almost same in the cyclic compression test with heating and cooling. (3) The value of the density of the bottom SMPF have an effect on the value of stress plateau occurring second time in the cyclic with heating and cooling compression test.
