关键词: 环氧胶黏剂, 等效固化, 步进电机, 固化动力学, 热稳定性, 力学性能

Abstract: To address the issues in the production of stepper motor rotors with traditional curing processes such as long cycles and slippage caused by rotor misalignment. This study proposes a high-temperature,short-time equivalent curing process of a certain single-component epoxy adhesive at " temperatures 160 ℃ and 15 ~ 20 minutes. " The curing kinetics parameters were analyzed using differential scanning calorimetry ( DSC),and combined with thermogravimetric analysis ( TGA) and mechanical property tests,the equivalence of this process to the standard " temperatures 120 ℃ and 2 hours" process was verified. The results show that the theoretical time for complete curing at temperatures 160 ℃ is 8. 693 minutes,and the " 160 ℃ and 15~ 20 minutes" process can ensure complete curing;the curing rates of both processes are nearly 100%,and the differences in thermal stability parameters are less than 5%;shear performance at normal and high temperatures is comparable,with slightly lower strength at low temperatures but still meeting engineering requirements. This process can improve production efficiency by 75%,providing an
efficient and reliable solution for process optimization in motor manufacturing.

Key words: epoxy adhesive, equivalent curing, stepping motor, curing kinetics, thermal stability, mechanical properties