形状記憶ポリマ粒子含有インテリジェントマテリアルの剛性解析 : 第1報, 形状記憶ポリマのガラス転移点分布の影響

概要

論文の詳細を見る
A shape-memory polymer of polyurethane series can be designed for its glass-transition temperature T_g, beyond which a remarkable change in stiffness may occur, within the range from -30℃ to 70℃. A material containing such shape-memory polymer particles, hence, may be also designed for its macroscopic stiffness by adjusting the T_g distribution of particles. This composite material then can be regarded as an intelligent material to macroscopic stiffness. In the present research, micromechanical analysis on the macroscopic stiffness of such an intelligent material is performed by taking into consideration of the T_g distribution of particles. Effects of temperature on the macroscopic stiffness of the material are calculated with respect to various T_g distributions of particles. As a consequence, we can see that the macroscopic stiffness of the material is closely related with the T_g distribution of particles and, especially for the case of bimodal type of distribution, it decreases as a flight of three stairs with increase in temperature.
社団法人日本機械学会の論文
2001-07-25