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- Title
Characterization and Analysis of Coalescence Nature of Sessile Droplet on Hydrophobic and Hydrophilic Insulator Surfaces.
- Authors
Indirajith, K.; Jaya, N.; Kumar, C. Naveen
- Abstract
In present decade, amidst all the remarkable equipment belonging to the power systems—the insulator stands out to be all-important because of their crucial role in power generation and transmission networks. Despite the above fact, they also transpire to have many constraints with respect to their normal function and longevity. Reports states that insulators are the weakest link due to their instant breakdown nature and other facts. Among all those notable facts, breakdown due to surface contamination of the insulators emerges to be intriguing for the present research world. Researchers present countless techniques to eliminate the same. Out of all the techniques, superhydrophobic coating stands out to be noteworthy for their resistance against moisture, wetting, ice and dust. Also, this coating outperforms the conventional RTV (Room Temperature Vulcanizing) silicone rubber coating with respect to delayed flashover occurrence. That is the time required for flashover occurrence is delayed in superhydrophobic coating. This novel attribute of superhydrophobic coating requires an experimental analysis. Hence, the proposed work serves this objective by preparing a superhydrophobic solution with PDMS (Polydimethylsiloxane) chemical. Results show that the contact angle and sliding angle of the water droplet dropped on this coating are above 170° and 5°, respectively. Simulation model for studying flashover occurrence, adhesion property of water was built using COMSOL Multiphysics Software.
- Subjects
HYDROPHILIC surfaces; CONTACT angle; SURFACE contamination; FLASHOVER; POWER transmission; SILICONE rubber
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2022, Vol 47, Issue 11, p14305
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-022-06748-y