Investigation Of Temperature On The Recovery Rate Of Shape Memory Epoxy Resin

Shape Memory polymers (SMPs), also known as Shape Memory macromolecules, refer to polymer materials whose initial shape can be changed in certain conditions and recovered when external conditions change (heat, electricity, light, chemical sensors, etc.). Compared with shape memory alloys (SMAs), SMPs have several advantages including low density, high capacity for elastic deformation, easy processing and adjustable shapes and temperature. They have a very broad application prospect in many fields such as biology, medicine and aerospace. In order to make full use of the shape memory properties of SMPs, the relationships between the processing and material properties of SMP are studied in this paper. At the same time, a descriptive equation of the shape memory recovery process is given, by which the relations between the processing and the capacity of shape memory recovery are pointed out. The purpose is to meet the different requirements for material properties in all industries by changing the processing to change the mechanical properties of materials.At first, the current processing of SMPs is introduced. Then the influencing factors of SMP properties are analyzed under the guidance of relevant theories. During the processing, temperature and time are set as parameters. The influences of those variables on the capacity of shape memory recovery of the specimens are studied. Then a lot of experiments are carried out to get the relevant data. The experimental data are analyzed and compared, and reasonable fitting function is obtained. The fitting results are compared with the theoretical value, which leads to the proposal of the ideal model of material. According to the available experimental data, a formula for the relations between relaxation time and temperature is presented. The results can deepen the understanding and awareness of the material, and provide the necessary theoretical basis for the subsequent performance prediction of the properties of the specimens.The results of this paper show that the properties of SMPs can be controlled within a certain range. Different processing methods can be used to meet different performance requirements.