报告详情
Supression of Water Treeing by BN nanosheet in XLPE nanocomposites subjected to tensile stress
编号：55
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更新：2022-08-29 10:59:58 浏览：79次
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摘要
Purpose/Aim
By using organic nanoparticles to modify the polymer, the water tree resistance of insulating materials can be effectively improved and the occurrence of water branches can be reduced. However, there are few studies on inhibiting water tree growth through two-dimension nanoparticles. This work focuses on the water treeing supression by 2D BNNs, espercailly treated by tensile stress.
Experimental/Modeling methods
XLPE/BNNs nanocomposites were selected as experimental materials. XLPE/BNNs composites with different mass fractions (1wt%,3wt%,5wt% and 10wt%) were prepared.The specimens are in the shape of a disc with a diameter of (35±1) mm and a thickness of (5.0±0.1) mm. Seven defects are manufactured in the sample. The radius of the defect tip is (40±1) µm, the included angle is 28°, the diameter of the defect tip is 1.0 mm, and the defect depth is 3mm.The water tree development was carried out by plaque test AC accelerated aging method. Before experiments, the samples are stretched. The treeing growth results were discussed by polarizing microscope and SEM.
Results/discussion
The 2D nanostructures of BNNs can hinder the growth of water branches and reduce the growth length of water tree; It can be found that the higher the concentration of BN, the smaller the length of the horizontal direction of the water tree. After tensile stress, the treeing growth becomes wider in the parallel direction.
Conclusions
The flake structure of BN can effectively inhibit the growth of branches. Thensile stress could extend the water treeing branches by introducing more Capillary channel of water.
By using organic nanoparticles to modify the polymer, the water tree resistance of insulating materials can be effectively improved and the occurrence of water branches can be reduced. However, there are few studies on inhibiting water tree growth through two-dimension nanoparticles. This work focuses on the water treeing supression by 2D BNNs, espercailly treated by tensile stress.
Experimental/Modeling methods
XLPE/BNNs nanocomposites were selected as experimental materials. XLPE/BNNs composites with different mass fractions (1wt%,3wt%,5wt% and 10wt%) were prepared.The specimens are in the shape of a disc with a diameter of (35±1) mm and a thickness of (5.0±0.1) mm. Seven defects are manufactured in the sample. The radius of the defect tip is (40±1) µm, the included angle is 28°, the diameter of the defect tip is 1.0 mm, and the defect depth is 3mm.The water tree development was carried out by plaque test AC accelerated aging method. Before experiments, the samples are stretched. The treeing growth results were discussed by polarizing microscope and SEM.
Results/discussion
The 2D nanostructures of BNNs can hinder the growth of water branches and reduce the growth length of water tree; It can be found that the higher the concentration of BN, the smaller the length of the horizontal direction of the water tree. After tensile stress, the treeing growth becomes wider in the parallel direction.
Conclusions
The flake structure of BN can effectively inhibit the growth of branches. Thensile stress could extend the water treeing branches by introducing more Capillary channel of water.
关键词
XLPE/BNNs composites;tensile stress;water tree
报告人
汉涛 王
Xi'An Jiaotong University稿件作者
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重要日期
-
会议日期
09月25日
2022
至09月29日
2022
-
08月15日 2022
提前注册日期
-
09月10日 2022
报告提交截止日期
-
11月10日 2022
注册截止日期
-
11月30日 2022
初稿截稿日期
-
11月30日 2022
终稿截稿日期
主办单位
IEEE DEIS
承办单位
Chongqing University
联系方式
- Zhengyong Huang
- 61******@qq.com
历届会议
-
2020年09月06日 中国 Beijing
2020 IEEE International Conference on High Voltage Engineering and Application -
2018年09月10日 希腊
2018 IEEE International Conference on High Voltage Engineering and Application -
2016年09月19日 中国 Chengdu, China
2016 IEEE International Conference on High Voltage Engineering and Application
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