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Supression of Water Treeing by BN nanosheet in XLPE nanocomposites subjected to tensile stress
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Abstract
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.
Keywords
XLPE/BNNs composites;tensile stress;water tree
Speaker
汉涛 王
Xi'An Jiaotong UniversitySubmission Author
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Important Date
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Conference Date
Sep 25
2022
toSep 29
2022
-
Aug 15 2022
Early Bird Registration
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Sep 10 2022
Contribution Submission Deadline
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Nov 10 2022
Registration deadline
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Nov 30 2022
Draft paper submission deadline
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Nov 30 2022
Final Paper Deadline
Sponsored By
IEEE DEIS
Organized By
Chongqing University
Contact Information
- Zhengyong Huang
- 61******@qq.com
Previous Conferences
-
2020-09-06 China Beijing
2020 IEEE International Conference on High Voltage Engineering and Application -
2018-09-10 Greece
2018 IEEE International Conference on High Voltage Engineering and Application -
2016-09-19 China Chengdu, China
2016 IEEE International Conference on High Voltage Engineering and Application
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