Interpreting Surface Degradation of HTV Silicone Rubber Filled with Micro/Nano-Silica Under AC and DC Voltages

In this study, high-temperature vulcanized silicone rubber filled with different concentrations of micro- and nano-sized silica were tested under synergistic exposure to multi-stress conditions for a time period of 5000 h separately under alternating current and direct current voltages. Different ch...

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Vydáno v:Journal of electronic materials Ročník 49; číslo 9; s. 5399 - 5410
Hlavní autoři: Akbar, Muhammad, Ullah, Rahmat, Abdul Karim, M. R.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York Springer US 01.09.2020
Springer Nature B.V
Témata:
Aging
Characterization and Evaluation of Materials
Chemistry and Materials Science
Contact angle
Direct current
Electronics and Microelectronics
Elongation
Fourier transforms
High temperature
Hybrid composites
Hydrophobicity
Instrumentation
Leakage current
Materials Science
Mechanical properties
Optical and Electronic Materials
Performance degradation
Performance evaluation
Silicon dioxide
Silicone resins
Silicone rubber
Solid State Physics
Tensile strength
mechanical strength
Surface degradation high-temperature vulcanized silicone rubber
aging
functional group
nano fillers
silica
ISSN:0361-5235, 1543-186X
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Shrnutí:In this study, high-temperature vulcanized silicone rubber filled with different concentrations of micro- and nano-sized silica were tested under synergistic exposure to multi-stress conditions for a time period of 5000 h separately under alternating current and direct current voltages. Different characterization methods were used to evaluate the degradation performance. After each aging cycle, leakage current was measured and hydrophobicity classifications were determined by using contact angle measurement and amethod proposed by the Swedish Transmission Research Institute. Scanning electron microscopic study and Fourier transform infrared spectroscopy were performed for each test sample. Mechanical performance was assessed by measuring hardness, tensile strength and elongation-at-break. An outcome of this investigation revealed that samples stressed with DC voltage experienced 20–30% degradation compared to AC-stressed samples under common environmental stresses. All hybrid composites were found more resistant to aging but to a different degree depending on the composition. The test sample designated as TS2 was found to offer the highest resistance to aging.
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content type line 14
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-020-08265-w