Investigation of Epoxy Resin Used as a Reinforcement Structure for Motors and Analysis of its Properties

Electric motors are widely applied as electrical equipment that rotates at high speeds in high-temperature and high-voltage environments, with epoxy resin being the main material used to reinforce the structure of the motor. Taking epoxy resin as the research object in this work, comprehensive analysis was carried out to investigate its various physical properties. The frequency conversion dielectric performance of epoxy resin was tested and its perforation morphology was analyzed. The test results were used as corresponding parameters to establish a combined model of electrical and thermal breakdown for the reinforced structure. The dynamic performance, static mechanical performance, and stress relaxation performance of the epoxy resin at different temperatures were also tested, and a viscoelastic constitutive model of epoxy-reinforced structures was established and verified through stress relaxation tests. The research results of the breakdown and viscoelastic models can serve as a reference for the application of epoxy resin-reinforced structures.