以自制聚氨酯预聚体与环氧树脂复合形成互穿聚合物网络结构,采用共混方法添加自制高导电性石墨烯,制备了电热双敏型形状记忆复合材料,研究了其性能.结果表明,以20%(?)聚氨酯/环氧树脂为基体所制1.0%(?)石墨烯/聚氨酯/环氧树脂复合材料的分散性良好,玻璃化转变温度稍低于纯环氧树脂,拉伸强度是纯环氧树脂的93%,导电性达3.58?10?4 S/m,固定率为95.5%,回复率为97.5%,循环5次后固定率不低于95%. The self-made high conductivity graphene was prepared by blending the self-made polyurethane prepolymer and epoxy resin to form the interpenetrating polymer network structure, and the shape of the electrothermal double-deformable shape memory composite was prepared and its properties were studied. The dispersibility of 1.0% (?) Graphene / polyurethane / epoxy resin composites prepared from 20% polyurethane / epoxy resin was good, the glass transition temperature was slightly lower than pure epoxy resin, tensile strength It is 93% of pure epoxy resin with conductivity of 3.58-104 S / m, with a fixed rate of 95.5% and a recovery rate of 97.5%. After 5 cycles, the fixed rate is not less than 95%.