不同成型工艺对干式空心电抗器绝缘层性能的影响研究

Study on the Influence of Different Molding Process on Insulation Performance of Dry Type Air Core Reactor

干式空心电抗器绝缘层主要由环氧树脂玻纤复合材料组成。成型工艺是影响环氧树脂复合材料性能的重要因素之一。针对不同固化和冷却工艺对环氧树脂玻纤复合材料的力学性能的影响展开研究,并测试其层间剪切强度和耐应力开裂性能。结果表明:阶梯固化和缓慢冷却工艺较一步法固化和快速冷却工艺均能提高复合材料板材的层间剪切强度和耐应力开裂性;采用阶梯固化和缓慢冷却工艺得到的环氧树脂玻纤复合材料的层间剪切强度最高、耐应力开裂性能最好。

The insulating layer of dry-type air core reactor is mainly composed of epoxy resin glass fiber composite.Different molding process is one of the important factors affecting the performance of epoxy resin composite.In this study,the effects of different curing and cooling processes on the mechanical properties of epoxy glass fiber composites were studied,and the interlaminar shear strength and stress cracking resistance were tested.The results show that the interlaminar shear strength and stress cracking resistance of the composite sheet can be improved by step curing and slow cooling process compared with one-step curing and rapid cooling process.The interlaminar shear strength and stress cracking resistance of the epoxy resin glass fiber composite obtained by step curing and slow cooling process are the highest.