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使用小铜管试样,己研究了增加云母粘合树脂含量对于无溶剂环氧树脂浸渍的对地绝缘的浸渍特性和电气性能的影响。在本研究中,通过将云母箔中粘合树脂量提高到24%,对包括脂环族环氧、双酚 A 环氧、酚醛环氧、缩水甘油酯和聚丁二烯等六种不同云母粘合材料作了评价。对每一组云母粘合材料和无溶剂环氧树脂都测取了浸渍漆挂漆量和流失量数据。并计算了挂漆效率(R/D)值,发现极少数例外,均随着云母粘合树脂含量的增加而急剧下降。在150℃和1 KV 时测得的功率因数数据表明某些云母粘合树脂,例如脂环族环氧,双酚 A 环氧和聚丁二烯,随云母粘合剂量的增加而功率因数降低。另一方面,如酚醛环氧云母粘合树脂当粘合树脂含量增加时,显示功率因数更高。所得结论是对于这许多正在发展的树脂来说,当云母粘合树脂含量在12～18%的范围内时,电气相容性和浸渍效率达到最佳的平衡。
Using small copper coupons, the effect of increasing the mica binder resin content on the impregnation and electrical properties of a ground-based insulation impregnated with a solvent-free epoxy has been studied. In this study, six different mica including alicyclic epoxy, bisphenol A epoxy, phenolic epoxy, glycidyl ester and polybutadiene were prepared by increasing the amount of binder resin in the mica foil to 24% Adhesive material was evaluated. For each group of mica adhesive materials and solvent-free epoxy resin impregnated paint were measured the amount of paint and the amount of loss data. And calculated the paint hanging efficiency (R / D) value, with very few exceptions were found, with mica binder resin content decreased sharply. Power factor data measured at 150 ° C and 1 KV indicate that certain mica binder resins, such as cycloaliphatic epoxies, bisphenol A epoxies, and polybutadienes, decrease in power factor as mica binder levels increase . On the other hand, as the phenolic epoxy mica binding resin shows a higher power factor as the binder resin content increases. The conclusion is that for many of the resins under development, the best balance of electrical compatibility and impregnation efficiency is achieved when the mica binder resin content is in the range of 12-18%.