A study on creep characteristics of shape memory polymer composites

摘要

Recently, shape memory polymer as one of intelligent materials has received much attention and its mechanical properties have been investigated. Shape memory polymers of polyurethane series have the glass transition temperature (T{sub}g) around the room temperature. Based on the large change in modulus of elasticity between temperatures above and below T{sub}g, the material has excellent shape memory properties. For wider applications, such as in industry, medical treatment and welfare, the glass fiber reinforced shape memory polymer was developed. In this study, specimens with fiber weight fraction: 0wt%, 10wt%, 20wt%, 30wt% were used and a tensile and creep test were conducted. It was confirmed that creep characteristics of the shape memory polymer. Composites and their strain-time relations were indicated experimentally.