Aging characteristics and lifespan prediction for composite insulator silicone rubber in a mountainous region environment

Ning, Kai; Lu, Jiazheng; Jiang, Zhenglong; Xie, Pengkang; Feng, Tao; Hu, Jianping; Fu, Zhiyao; Tang, Zhuang

doi:10.1016/j.polymertesting.2023.108023

Cited by 9 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At 20 vol.% of SR content, the conductivity of conductive materials with thermal aging is almost similar to that of those without thermal aging. Thermal aging can remove impurities, enhance rCB dispersion, and promote better interfacial interactions between components [13]- [16], resulting in a more efficient conductive network and higher conductivity compared to the non-aged state. However, the overall results show that the electrical conductivity without and with thermally aged samples is falling at the same magnitude (× 10 -3 ) and the electrical conductivity is not influenced much by the effect of thermal aging at 100 ˚C for 72 hours.…”

Section: Electrical Conductivitymentioning

confidence: 99%

“…However, the conductive material with 5 vol.% to 20 vol.% of SR decreases after thermal aging due to degradation of the SR component, resulting in a decrease in mechanical properties [6]. The main contributor to SR aging is the breakdown of molecular structure in a hightemperature environment, causing the conductive material insulator's SR to deteriorate, leading to the rubber's seal failing, moisture entering, and eventually deteriorating the conductive material rod [16].…”

Section: Flexural Propertiesmentioning

confidence: 99%

“…The initial decomposition temperature of the epoxy/SR/rCB conductive materials with thermal aging at 5 vol.% SR is slightly lower as compared to the epoxy/0 vol.% SR/rCB conductive material with thermal aging. During thermal aging, the silicone rubber may undergo oxidation reactions, leading to the formation of reactive species such as free radicals [16]. These radicals can initiate chain scission or crosslinking reactions, altering the material's decomposition behaviour.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

See 2 more Smart Citations

Effect of Silicone Rubber on the Properties of Epoxy/Recovered Carbon Black (rCB) Conductive Materials

Pei Chee Leow,

Pei Leng Teh,

Cheow Keat Yeoh

et al. 2024

IJNeaM

View full text Add to dashboard Cite

The primary focus of this study is to investigate the effect of silicone rubber (SR) content on the mechanical, thermal, electrical conductivity, and morphological properties of epoxy/recovered carbon black (rCB) conductive material. The conductive material is used to produce the electrostatic discharge (ESD) tray for the electronic packaging industry. This study investigated the effect of silicone rubber content (0, 5, 10, 15, and 20 vol.%) on the properties of epoxy/SR/rCB conductive materials, with the rCB content fixed at 15 vol.% for its optimum electrical conductivity. The silicone rubber acts as a toughening agent for epoxy. Through the fracture toughness result, it can be identified that silicone rubber plays a role in improving the toughness properties of the epoxy/SR/rCB conductive material. The optimum results for mechanical properties were recorded at 5 vol.% SR. The addition of SR to the epoxy matrix enhances the electrical properties of the epoxy/SR/rCB conductive material. The effect of thermal aging on epoxy/SR/rCB conductive materials was also studied to determine the properties of the conductive material materials at high temperatures for a long period of time. After thermal aging, the mechanical, thermal, electrical conductivity, and morphological properties of the epoxy/SR/rCB conductive material were slightly reduced.

show abstract

Section: Electrical Conductivitymentioning

confidence: 99%

Section: Flexural Propertiesmentioning

confidence: 99%

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

See 1 more Smart Citation

Effect of Silicone Rubber on the Properties of Epoxy/Recovered Carbon Black (rCB) Conductive Materials

Pei Chee Leow,

Pei Leng Teh,

Cheow Keat Yeoh

et al. 2024

IJNeaM

View full text Add to dashboard Cite

show abstract

“…According to the standard provisions of DL/T 376-2010, SIR composite insulators need to bear the support role of the transmission line, so the shore hardness cannot be less than 50 HA. The shore hardness of SIR will increase with the operation years, and after 10 years of operation, the mean shore hardness will increase from the initial 70 HA to about 85 HA [16]. After the hardening of composite insulators, the mechanical properties of the sheds are seriously affected, accompanied by more serious performance deterioration, including the decline or even loss of hydrophobicity.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of aging and degradation for silicone rubber composite insulator based on machine learning

Liu

Yang

et al. 2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Silicone rubbers, as the main material of composite insulator sheds, have aging phenomenon for the long-term operation in the outdoor, which has an important impact on the performance degradation of composite insulator. Periodic examine and replacement of severely aged composite insulator is of great significance for the safe operation of power system. However, there is no clear standard to estimate the aging degree. In order to evaluate the degree of aging and degradation more accurately, the experimental test and analysis of the silicone rubber sheds were carried out from three aspects: physical characteristics, chemical composition and electrical properties. The physical characteristic results show that the surface of the aging silicone rubber will appear obvious holes and cracks, as well as hardening. Chemical composition results show that the internal composition of the continuous decomposition, while a large number of heavy metal elements accumulate in the pollution. The change of physical characteristics and chemical composition of silicone rubber sheds may lead to the deterioration of electrical properties. According to the above results, the influence rule of measurement parameters and aging degree was obtained, and the key feature parameters of aging were summarized and extracted. Based on the feature parameters, a decision tree aging evaluation model is established for state evaluation. The accuracy of machine learning is 100% and 93.2% respectively. Furthermore, early warning of moderately aged insulators and replacement of severely aged insulators are proposed in the on-site maintenance of silicone rubber composite insulators.

show abstract

Effect of outdoor ageing on pyrolytic characteristics and kinetics of different organic components in waste photovoltaic panels

Li,

Tao,

Zhang

et al. 2024

Journal of Analytical and Applied Pyrolysis

View full text Add to dashboard Cite

Aging characteristics and lifespan prediction for composite insulator silicone rubber in a mountainous region environment

Cited by 9 publications

References 18 publications

Effect of Silicone Rubber on the Properties of Epoxy/Recovered Carbon Black (rCB) Conductive Materials

Effect of Silicone Rubber on the Properties of Epoxy/Recovered Carbon Black (rCB) Conductive Materials

Evaluation of aging and degradation for silicone rubber composite insulator based on machine learning

Effect of outdoor ageing on pyrolytic characteristics and kinetics of different organic components in waste photovoltaic panels

Contact Info

Product

Resources

About