| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly elastic shape-memory vulcanized rubber molding, esp. in the form of a film, a sheet, or a heat-shrinkable film. having a controllable shrinkage (begining) temp. and an improved usability. SOLUTION: This shape-memory vulcanized rubber molding exhibits a shape recovery of 70% or higher, a shape memory of 50% or higher, and a permanent set after 200% elongation of 20% or lower and pref. comprises 100 pts.wt. vulcanized rubber and 3-50 pts.wt. resin particles having a Vicat softening point of 70 deg.C or higher and dispersed therein. Since the shrinkage (begining) temp. of the molding is controlled by resin particles having a Vicat softening point of 70 deg.C or higher, the molding has a good usability, and it has a high rubber elasticity since it contains a vulcanized rubber. Therefore, the molding can be suitably used esp. in the form of a film, a sheet, or a heat-shrinkable a film. |
