促进剂种类和用量对电抗器用浸渍树脂性能的影响

为解决大型空心电抗器线圈在绕制和固化过程中发生流胶而影响产品质量的问题,通过测试浸渍树脂不同固化体系的粘度、凝胶时间、冲击强度和热变形温度,研究了不同种类促进剂及其用量对浸渍树脂性能的影响,并通过制作线圈模型,测试了3种固化体系线圈模型固化过程的树脂流失量和固化后线圈内部的树脂分布均匀性。结果表明:2,4-EMI、DMP-30、BDMA 3种固化体系均能满足电抗器线圈用浸渍树脂的性能要求;BDMA固化体系对树脂分布均匀性的改善效果明显优于2,4-EMI、DMP-30固化体系,其树脂流失量为0.47%,明显小于2,4-EMI、DMP-30固化体系的树脂流失量。

Effects of Types and Dosages of Accelerator on the Properties of Impregnating Resin for Reactor

To solve the product quality problem caused by outflow of adhesive from large scale core reactor in the coil winding and curing process,the viscosity,gel time,impact strength and heat distortion temperature of impregnating resin with different curing systems were tested,and the effects of different accelerators and dosages on the properties of impregnating resin were studied.By making coil models of three types of curing systems,the resin loss amount in curing process and distribution uniformity of resin in coil after curing were tested.The results show that the three curing systems,2,4-EMI,DMP-30 and BDMA can meet the property requirements for the impregnating resin for reactor coil.The distribution uniformity of resin with BDMA curing system is better than that with 2,4-EMI and DMP-30 curing systems,and the loss amount of resin with BDMA curing system is 0.47%,which is obviously lower than that with 2,4-EMI and DMP-30 curing systems.