Investigation of Contamination Flashover Voltage of A Porcelain Long Rod Insulator with Silicone Rubber Coating on The Trunks

2006 ◽  
Author(s):  
Basanta Gautam ◽  
Shigeki Matsumura ◽  
Shouta Matsushita ◽  
Takuma Hashimoto ◽  
Kenji Sakanishi ◽  
...  
Keyword(s):  
Silicone Rubber ◽  
Flashover Voltage ◽  
Rubber Coating ◽  
Long Rod ◽  
Contamination Flashover

scholarly journals Influence of Silicone Rubber Coating on the Characteristics of Surface Streamer Discharge

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3784
Author(s):  
Xiaobo Meng ◽  
Liming Wang ◽  
Hongwei Mei ◽  
Chuyan Zhang
Keyword(s):  
Silicone Rubber ◽  
Electrical Power ◽  
Electrical Power System ◽  
Streamer Discharge ◽  
Reliable Operation ◽  
Pollution Flashover ◽  
Flashover Voltage ◽  
Streamer Propagation ◽  
Rubber Coating ◽  
Rubber Coatings

A pollution flashover along an insulation surface—a catastrophic accident in electrical power system—threatens the safe and reliable operation of a power grid. Silicone rubber coatings are applied to the surfaces of other insulation materials in order to improve the pollution flashover voltage of the insulation structure. It is generally believed that the hydrophobicity of the silicone rubber coating is key to blocking the physical process of pollution flashover, which prevents the formation of continuously wet pollution areas. However, it is unclear whether silicone rubber coating can suppress the generation of pre-discharges such as corona discharge and streamer discharge. In this research, the influence of silicone rubber coating on the characteristics of surface streamer discharge was researched in-depth. The streamer ‘stability’ propagation fields of the polymer are lower than that of the polymer with silicone rubber coating. The velocities of the streamer propagation along the polymer are higher than those along the polymer with silicone rubber coating. This indicates that the surface properties of the polymer with the silicone rubber coating are less favorable for streamer propagation than those of the polymer.

Preparation and Performance of RTV Coating for Anti-Pollution Flashover with Superhydrophobicity by Filling CaCO3/SiO2 Composite Particles into Silicone Rubber

2011 ◽  
Vol 328-330 ◽  
pp. 1263-1267 ◽  
Author(s):  
Jing Hai ◽  
Jin Xin Yang ◽  
Jiang Cheng ◽  
Zhuo Ru Yang
Keyword(s):  
Silicone Rubber ◽  
Spray Coating ◽  
Composite Particles ◽  
Coating Film ◽  
Water Contact ◽  
Pollution Flashover ◽  
Flashover Voltage ◽  
Strong Adhesion ◽  
Rubber Coating ◽  
And Performance

Room temperature vulcanizing (RTV) silicone rubber coating with superhydrophobicity for anti-pollution flashover is prepared by filling silica-encapsulated calcium carbonate particles (CaCO3/SiO2 composite particles) into polydimethylsiloxane (PDMS) rubber. Two-step spraying technology is applied for fabricating the superhydrophobic RTV coating film on outdoor insulators. The primary spray coating provides basically the strong adhesion and certain hydrophobicity, and the second one produces the appropriate roughness structure and further enhances the superhydrophobicity. The water contact angle on the prepared RTV coating film is 165°and the sliding (rolling) angle of water droplet is about 5°, allowing water droplets to move easily on the coating surface and give self-cleaning function of the RTV coated insulator surface. The flashover voltage of insulators with superhydrophobic RTV coating is 29.95 kV, quite higher than that of insulators with common RTV coating (23.29) and that without RTV coating (11.34 kV).

scholarly journals In Vivo Biocompatibility and Analytical Performance of Intravascular Amperometric Oxygen Sensors Prepared with Improved Nitric Oxide-Releasing Silicone Rubber Coating

2003 ◽  
Vol 75 (4) ◽  
pp. 1037-1037
Author(s):  
Megan C. Frost ◽  
Steven M. Rudich ◽  
Huiping Zhang ◽  
Martin A. Maraschio ◽  
Mark E. Meyerhoff
Keyword(s):  
Nitric Oxide ◽  
Silicone Rubber ◽  
Oxygen Sensors ◽  
Analytical Performance ◽  
Rubber Coating ◽  
Nitric Oxide Releasing

scholarly journals Effect of mineral oil on flashover voltage of HTV silicone rubber under AC corona ageing: from the view of trap level distribution

2020 ◽  
Vol 14 (23) ◽  
pp. 5498-5504
Author(s):  
Yu Yu ◽  
Ke Wang ◽  
Yan Yang ◽  
Gang Li ◽  
Guangning Wu ◽  
...  
Keyword(s):  
Silicone Rubber ◽  
Mineral Oil ◽  
Trap Level ◽  
Flashover Voltage

Improvement of ethanol selectivity of silicalite membrane in pervaporation by silicone rubber coating

2002 ◽  
Vol 210 (2) ◽  
pp. 433-437 ◽  
Author(s):  
H Matsuda ◽  
H Yanagishita ◽  
H Negishi ◽  
D Kitamoto ◽  
T Ikegami ◽  
...  
Keyword(s):  
Silicone Rubber ◽  
Rubber Coating

Evaluation of the Hydrophobicity on Silicon Rubber Coating with Loads of Alumina Trihydrate and Nanosilica for Use in Electrical Insulation Coatings

2015 ◽  
Vol 820 ◽  
pp. 405-410
Author(s):  
Daniella Cibele Bezerra ◽  
Ignat Pérez Almirall ◽  
Edson Guedes da Costa ◽  
Ana Cristina Figueiredo de Melo Costa ◽  
Edcleide Maria Araújo
Keyword(s):  
Silicone Rubber ◽  
Room Temperature ◽  
Salt Spray ◽  
Rubber Matrix ◽  
Spray Chamber ◽  
Heterogeneous Distribution ◽  
The Matrix ◽  
Rubber Coating ◽  
Rubber Coatings ◽  
Alumina Trihydrate

This study aims to evaluate the hydrophobicity of vulcanized silicone rubber coatings at room temperature (RTV SR) with loads of alumina trihydrate (ATH) and nanosilica (NS) in the polymeric silicone rubber matrix, in order to obtain coatings ATH/NS/RTV SR to cover the surface of glass electrical insulators. The coatings were characterized by scanning electron microscopy (SEM), testing in salt spray chamber, loss test and recovery of hydrophobicity. These coatings showed varying sizes of agglomerates and heterogeneous distribution of particles within the matrix RTV SR. In the test in salt spray chamber smaller leakage current values was observed for the insulator coating with the ATH/NS loads. In the loss and recovery of the hydrophobicity test the best result was observed for insulating load RTV SR / 20: 1 (ATH: NS).

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