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Journal ArticleDOI

Fabrication of self-cleaning superhydrophobic silicone rubber insulator through laser texturing

TL;DR: In this article, a simple and high throughput way of fabrication of superhydrophoresis is proposed for the transmission and distribution of the power system networks, which can be used for super-hydrophoric super-insulators.
Abstract: Silicone insulators are gaining its importance in the transmission and distribution of the power system networks. This study proposes a simple and high throughput way of fabrication of superhydroph...
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Journal ArticleDOI
TL;DR: In this article , the authors compared the specific strategies developed to produce super-hydrophobic rubber coatings and analyzed the characteristics and applications of superhydrophilic rubber coating, and applied them on fabric, concrete and asphalt pavement to prevent wetting.

8 citations

Journal ArticleDOI
TL;DR: In this article, the octadecylamine-modified epoxy resin was sprayed on the surface of carbon fiber/epoxy prepreg and hierarchical micro/nanostructures were formed on the surfaces of the composites through hot pressing.
Abstract: In this study, novel carbon fiber/epoxy (CF/EP) composites with anti-icing properties were made using a combination of octadecylamine modification and hard templating. First, the octadecylamine-modified epoxy resin was sprayed on the surface of CF/EP prepreg. Hierarchical micro/nanostructures were formed on the surfaces of the composites through hot pressing with aluminum templates that had been modified by sandblasting and anodizing. The resulting composites were superhydrophobic, with static contact angles of up to 155° and sliding angles as low as 8°. Superhydrophobicity was maintained after abrading with 400 grit SiC sandpaper. The anti-icing properties of the composites were quantified by measuring droplet freezing time and ice adhesion force. Compared to untreated CF/EP, the surface treatments used here increased the time to freeze a 5 μL surface droplet from 76 to 640 s at − 20 °C, and reduced ice adhesion strength from roughly 74 kPa to 50 kPa.

5 citations

Journal ArticleDOI
TL;DR: A review of the development and application of super-hydrophobic insulation for outdoor highvoltage applications is presented in this article , where the methods of preparing insulation exhibiting super-rophobic properties to mitigate the pollution problem under high voltages in the outdoors are explored.
Abstract: The aim of this article is to present a review of the development and application of superhydrophobic insulation for outdoor high-voltage applications. The methods of preparing insulation exhibiting superhydrophobic properties to mitigate the pollution problem under high voltages in the outdoors are explored. In addition, the existing evaluation techniques at the material development stage are reviewed and potential new modifications are discussed. The self-cleaning and anti-icing properties, the electrical performance, and prospects of superhydrophobic insulators are also addressed. Although superhydrophobic insulators may show promising behavior in small-scale laboratory conditions that do not use electrical stress, the effect of surface micro–nano structure responsible for the superhydrophobicity on the performance under the actual outdoor and weathering conditions under voltage remains to be fully understood and verified. Therefore, there is a need to verify the feasibility of superhydrophobic insulators for outdoor high-voltage applications with a solid evaluation protocol, while using material screening methods in the laboratory, and with reference to field experience.

4 citations

Journal ArticleDOI
22 Aug 2022-Coatings
TL;DR: In this paper , the authors introduce the research progress and current situation of self-cleaning, anti-icing surface preparation, and aging test technology of composite insulators, and look forward to the future development of composite INSulators.
Abstract: Composite insulators are widely used in power systems because of their advantages of light weight, good pollution resistance, and high mechanical strength. With the increasingly serious environmental pollution problem, especially in winter at high latitudes, composite insulators are easily affected by fog, bird droppings, algae, and icing. Long-term exposure to the outdoor insulator surface will cause aging, which will then pose ae potential safety hazard to the stable operation of insulators. Therefore, the self-cleaning, anti-icing, and aging test technologies of composite insulators are particularly important. This paper introduces the research progress and current situation of self-cleaning, anti-icing surface preparation, and aging test technology of composite insulators, and looks forward to the future development of composite insulators.

4 citations

Journal ArticleDOI
TL;DR: In this article , a comprehensive overview of the performance principles and current application status of functional coatings for overhead transmission lines is provided, and a summary of the key issues in the research of functional coating and gives an outlook on potential future research directions.
Abstract: Overhead transmission line is the main method of power transmission. Conductors, insulators, and towers are the primary electrical equipment of overhead transmission lines. Due to overhead transmission lines work in the natural environment, problems such as icing, corona discharge, contamination deposition, and corrosion will arise. As a result, some accidents may occur, which cause enormous economic losses. The above problems can be solved by coating functional coatings with superhydrophobic, semiconductive, anti-corrosion, and other characteristics on electrical equipment, which has the advantages of low cost and high efficiency. Therefore, functional coatings have become a research hotspot in the field of external insulation in recent years. In view of the various problems of different electrical equipment in overhead transmission lines, distinctive solutions need to be adopted, so this review classifies the coatings according to the usage scenarios and functions. In each category, first briefly outlines the causes of the electrical equipment problem, then introduces the mechanism of using this type of functional coating to solve the problem, next summarizes the development and application status of this type of coating, after summarizes the limitations of this coating, and finally provides a summary of the key issues in the research of functional coatings and gives an outlook on potential future research directions. This review intends to provide readers with a comprehensive overview of the performance principles and current application status of functional coatings for overhead transmission lines.

4 citations

References
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Journal ArticleDOI
TL;DR: A transmittance and self-cleaning polymethylsiloxane (PMS) coating with superhydrophobic surfaces was fabricated through an easy sol-gel method by using fluorine-free and available materials as mentioned in this paper.
Abstract: A transmittance and self-cleaning polymethylsiloxane (PMS) coating with superhydrophobic surfaces was fabricated through an easy sol–gel method by using fluorine-free and available materials (methy...

9 citations

Journal ArticleDOI
TL;DR: In this paper, a very high contact angle and low sliding angle hysteresis was achieved using a single-pot coating solution containing fluorosurfactant (FS 61) and fluoro-monomer (OCO) with a very low contact angle.
Abstract: Hydrophobic cotton fabric with a very high contact angle and low sliding angle hysteresis was prepared using a single-pot coating solution containing fluorosurfactant (FS 61) and fluoro-monomer (oc...

9 citations

Journal ArticleDOI
09 Jan 2019
TL;DR: In this paper, a new method of impregnation of silver nanoparticles (AgNPs) into polymer film was proposed and tested against bacterial cells and different sizes of nanoparticles were embedded in polystyrene film using thermal annealing and soft molding technique.
Abstract: The major challenge faced in biomedical field is the formation of biofilm on polymer devices like catheters. It is important to functionalize the biomedical devices with a bactericidal agent through an easy and safe process in order to protect them from bacterial attack. In this article, the new method of impregnation of silver nanoparticles (AgNPs) into polymer film was proposed and tested against bacterial cells. The different sizes of silver nanoparticles were embedded in polystyrene film using thermal annealing and soft molding technique. Silver films having different thickness were deposited on the highly polished machinable glass ceramic (MACOR) substrate using direct current (DC) sputtering and subjected to at 750 °C for 15 min. After the heat treatment, AgNPs were formed on MACOR sample. It was then characterized using field emission scanning electron microscope (FE-SEM). Image-J software was used to analysed shape, size and distribution of AgNPs. The spin coating method was adopted to coat polystyrene film on to MACOR substrate supported AgNPs and allow it to cure for 24 h. After curing, the polystyrene film was peeled off and finally, AgNPs got transferred to polystyrene film. The AgNPs embedded polystyrene film was analyzed using FE-SEM and atomic force microscopy (AFM). Spread plate (plate counting) method was used to evaluate the bacterial killing potential of modified polystyrene film against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) bacteria. The modified polystyrene film shows effective antibacterial ability against both the types of bacteria compared to the plain polystyrene surface.

7 citations

Journal ArticleDOI
TL;DR: Based on the reaction of AgNO3 and dopamine-hydrochloride in the weak alkaline conditions, carbon-silver microspheres with layered structure were produced, which subsequently were surface modified as discussed by the authors.
Abstract: Based on the reaction of AgNO3 and dopamine-hydrochloride in the weak alkaline conditions, carbon–silver microspheres with layered structure were produced, which subsequently were surface-modified ...

7 citations

Journal ArticleDOI
TL;DR: The complex composition in industrial pollutants includes immiscible liquid and miscible solution that present a great challenge to deal with the effluent as discussed by the authors, and the interaction between them is studied in this paper.
Abstract: The complex composition in industrial pollutants includes immiscible liquid and miscible solution that present a great challenge to deal with the effluent. In this research, the interaction between...

6 citations