EEA/DCP材料的形状记忆特性研究

对以过氧化二异丙苯(DCP)为交联剂的乙烯-丙烯酸乙酯共聚物(EEA)体系进行了研究,结果发现DCP的用量对形状回复率、形状固定率、回复响应温度、拉伸强度和断裂延伸率有很大的影响,并由此确定了当DCP用量为0.5%时,EEA体系具有优良的形状记忆性能;此外对材料动态性能的测试,指出了随着DCP用量的增加,室温模量逐步降低,而高温模量逐步提高,该实验同时还揭示了形状记忆高分子的高弹平台特性.

Study on Character of Shape Memorizing of EEA/DCP

The Character of Shape Memorizing of EEA/DCP was systematically studied. The results show that the concentration of DCP has great influence upon Shape recovering rate, Shape fixing rate, Shape recovering temperature, Tensile strength and elongation at break. Furthermore, through the experiments, we can know that when the concentration of DCP is 0.5%, the system of EEA/DCP has the relatively excellent shape memorial character. Additionally, the Dynamical Thermomechanicl Analysis was also taken, that as DCP increasing, the module in room temperature declines and the module in high temperature increases is reflected. And also from the analysis, the high elastically module platform of the Shape Memorizing of EEA/DCP is indicated.