Water Absorption and Dehydration Characteristics of Epoxy Resin in Acid-base Salt Solution

CHEN Lu; DU Gang; YANG Jie; ZHOU Hongling; LI Guangmao

doi:10.13296/j.1001-1609.hva.2022.06.013

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Water Absorption and Dehydration Characteristics of Epoxy Resin in Acid-base Salt Solution

更新时间：2025-04-26

- Water Absorption and Dehydration Characteristics of Epoxy Resin in Acid-base Salt Solution
- High VoltageApparatus Vol. 58, Issue 6, Pages: 93-97(2022)
- 作者机构：
  
  广东电网有限责任公司广州供电局
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2022.06.013
  CLC： TM215.1
- Published：2022
- 稿件说明：
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CHEN Lu, DU Gang, YANG Jie, et al. Water Absorption and Dehydration Characteristics of Epoxy Resin in Acid-base Salt Solution[J]. High voltageapparatus, 2022, 58(6): 93-97.
DOI：

CHEN Lu, DU Gang, YANG Jie, et al. Water Absorption and Dehydration Characteristics of Epoxy Resin in Acid-base Salt Solution[J]. High voltageapparatus, 2022, 58(6): 93-97. DOI： 10.13296/j.1001-1609.hva.2022.06.013.

摘要

环氧树脂由于其优异的绝缘密封性能被广泛应用于干式空心电抗器，然而在湿热环境中环氧树脂易吸水受潮导致材料性能劣化，严重影响设备的安全稳定运行，掌握材料的吸水与脱水行为对其实际应用具有重要意义，因此文中研究了环氧树脂在不同酸碱盐溶液中的吸水与脱水特性。实验结果表明：环氧树脂在不同溶液中的吸水过程符合菲克第二定律；吸水速率和饱和吸水率与两侧溶液浓度差有关，环氧树脂在去离子水中的吸水速率最大；脱水过程也是一种渗透作用，环氧树脂脱水速率很快，相对平衡脱水率几乎能达到100%。

Abstract

Epoxy resin is used widely in dry-type air-core reactor due to its excellent insulating and sealing properties. However

in humid and hot environment

epoxy resin is prone to absorb water and moisture

which leads to properties deterioration of the material and seriously affects safe and stable operation of equipment. Master the water absorption and dehydration behavior of the material is of great significance to its actual application. Therefore

the water absorption and dehydration properties of epoxy resin in different acid-base salt solutions are studied in this paper.The experimental results show that the water absorption process of epoxy resin in different solutions complies with Fick’s second law; both the water absorption rate and saturated water absorption rate are related to the concentration difference of solution on both sides and the water absorption rate of epoxy resin in deionized water is the highest. The dehydration process is also a kind of osmosis. The dehydration rate of epoxy resin is very fast and the relative equilibrium dehydration rate can reach almost 100%.

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Related Author

LI Guangmao

DU Gang

ZHOU Hongling

YANG Jie

PANG Zhikai

CHEN Lu

ZHANG Lei

ZHOU Xiu

Related Institution

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electrical Power University

Electric Power Research Institute of State Grid Ningxia Electric Power Co., Ltd.

China Electric Power Research Institute

Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University

State Grid Shaanxi Electric Power Company

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