Aging assessment of silicone rubber materials under corona discharge accompanied by humidity and UV radiation-Reference-Cited by-同舟云学术

Aging assessment of silicone rubber materials under corona discharge accompanied by humidity and UV radiation

Published:2024-01-01 Issue:1 Volume:13 Page:
ISSN:2191-9097
Container-title:Nanotechnology Reviews
language:en
Short-container-title:

Author:

Mahmood Atif¹,Muneeb Ahmed²,Saeed Usman³,Alam Shahid¹,Al-Ammar Essam A.⁴,Kang Jee-Hyun⁵,Zoubi Wail Al⁵,Choi Dongwhi⁶

Affiliation:

1. Department of Electrical and Computer Engineering, COMSATS University , 57000 , Sahiwal , Pakistan

2. Department of Botany, Division of Science and Technology, University of Education Lahore , Lahore 54000 , Pakistan

3. Department of Chemical Engineering, Muhammad Nawaz Sharif University of Engineering and Technology, MNS UET , Multan , 60000 , Pakistan

4. Department of Electrical Engineering, College of Engineering, King Saud University , P.O. Box 800 , Riyadh 11421 , Saudi Arabia

5. School of Materials Science and Engineering, Yeungnam University , Gyeongsan 38541 , Republic of Korea

6. Department of Mechanical Engineering (Integrated Engineering Program), Kyung Hee University, 1732 Deogyeong-daero , Yongin , Gyeonggi, 17104 , Republic of Korea

Abstract

Abstract High voltage (HV) outdoor insulators are subjected to both electrical and environmental stresses, which may lead to their failure. Among the causes, corona discharge, humidity and UV radiation are considered to be the most damaging factors. Efforts are therefore underway to investigate new materials for improving the performance of insulating systems. In this research work, silicone-based room temperature vulcanized samples filled with alumina trihydrate (ATH), silicon dioxide and magnesium hydroxide (MH) were prepared and exposed to AC corona discharge for a duration of 110 h. The electric discharge was also accompanied by UV radiation and two different humidity levels. Following aging of the test samples, diagnosis was conducted to assess their integrity. Measurements based on determining the static contact angle demonstrated the loss of hydrophobicity of all the materials, while hydrophobicity recovery phenomena revealed that ATH-doped materials demonstrated a comparatively higher increase in the contact angle than in samples filled with silicone dioxide (silica) and MH. Scanning electron microscopy analysis revealed deep cracks and block-like structures on their surfaces. Similarly, energy-dispersive X-ray analysis indicated the signs of surface oxidation of the aged samples. However, the data of elemental composition exhibited the loss of filler contents as well as that of carbon from the base matrix. The overall assessment showed that resistance to suppress aging is influenced by both the filler type and its concentration in the investigated composites. The ATH-filled composites exhibited outstanding performance when exposed to the rigors of corona discharge and other environmental stresses. This research contributes to materials science and HV engineering by addressing the development of composites for enhanced insulator performance, with future aspects lying in the utilization of nano-composites for advanced functionality and durability.

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/ntrev-2024-0018/pdf

Reference39 articles.

1. Cheng L, Mei H, Wang L, Guan Z, Zhang F. Research on aging evaluation and remaining lifespan prediction of composite insulators in high temperature and humidity regions. IEEE Trans Dielectr Electr Insul. 2016 Oct;23(5):2850–7.

2. Wang J, Pan Z, Wang Y, Wang L, Su L, Cuiuri D, et al. Evolution of crystallographic orientation, precipitation, phase transformation and mechanical properties realized by enhancing deposition current for dual-wire arc additive manufactured Ni-rich NiTi alloy. Addit Manuf. 2020 Aug;34:101240.

3. Kuang W, Wang H, Li X, Zhang J, Zhou Q, Zhao Y. Application of the thermodynamic extremal principle to diffusion-controlled phase transformations in Fe-CX alloys: Modeling and applications. Acta Materialia. 2018 Oct;159:16–30.

4. Yang W, Jiang X, Tian X, Hou H, Zhao Y. Phase-field simulation of nano-α′ precipitates under irradiation and dislocations. J Mater Res Technol. 2023 Jan;22:1307–21.

5. Yang S, Huang Z, Hu Q, Zhang Y, Wang F, Wang H, et al. Proportional optimization model of multiscale spherical BN for enhancing thermal conductivity. ACS Appl Electron Mater. 2022 Aug;4(9):4659–67.