Nano particle reinforcement of HTV silicone rubber for high voltage insulators

Author(s):  
Isaias Ramirez Vazquez
Author(s):  
Nurbahirah Norddin ◽  
Intan Mastura Saadon ◽  
Najwa Kamarudin ◽  
Norain Rahim ◽  
Jeefferie bin Abd Razak

<span>This paper is about preparation of silicone rubber (SiR) samples with different filler for high-voltage insulation purpose. The fillers used were silica from waste glass, calcium carbonate from cockle shell, silica/calcium carbonate and wollastonite. All the fillers were crushed into powder and undergo internal mixer and hot press as a material preparation. It was expected that the combination of filler with silicone rubber would give better result when experiencing ageing process. The direct current (DC) inclined plane test was used to investigate the tracking and erosion on silicone rubber composites. The tracking length was observed between the top and bottom electrode. Comparison would then be made between the silicone rubbers with different fillers based on the result obtained from the experiment.</span>


High Voltage ◽  
2018 ◽  
Vol 3 (4) ◽  
pp. 289-294 ◽  
Author(s):  
Muhammad Tariq Nazir ◽  
Bao Toan Phung ◽  
Shihu Yu ◽  
Yuanyuan Zhang ◽  
Shengtao Li

2017 ◽  
Vol 37 (7) ◽  
pp. 671-680 ◽  
Author(s):  
Hidayatullah Khan ◽  
Muhammad Amin ◽  
Muhammad Yasin ◽  
Muhammad Ali ◽  
Ayaz Ahmad

Abstract Ethylene propylene diene monomer (EPDM) and silicone rubber (SiR) are well-known polymers for high-voltage (HV) outdoor applications. In this research work, the effect of hybrid SiO2 (a mixture of 15% microsized and 5% nanosized silica) has been investigated on the mechanical, thermal, and electrical properties of EPDM and SiR composites. Using the ASTM standard procedure, the EPDM and SiR composites filled with hybrid silica were compounded by two roll mill and simple blending techniques, respectively. It was observed that with the addition of hybrid SiO2, the composites exhibited improved tensile strength of ~2500 kPa, reduced elongation at break, and enhanced hardness. The samples filled with SiR hybrid silica showed higher thermal stability and volume/surface resistivities relative to EPDM hybrid composites. However, EPDM hybrid composites showed higher dielectric strength of ~23.4 kV/mm as compared with SiR composites. From these characterization results, it can be suggested that SiR hybrid composites are more suitable for outdoor HV insulation applications.


2018 ◽  
Vol 8 (1) ◽  
pp. 2542-2545
Author(s):  
G. Satheesh ◽  
B. Basavaraja ◽  
P. M. Nirgude

High voltage insulators are mainly used to support transmission lines. This paper focuses on simulating the electric field along the surface of contaminated Silicone Rubber (SIR) insulators. The electric field (EF) distribution is important to determine the EF stress occurring on the insulator surface. So, the EF distribution is analyzed using a FEM tool in MATLAB under various conditions. Two types of insulators, straight and alternate sheds, were considered. Results showed that higher EF stresses occurs on the trunk portions of both straight shed and alternate shed types. Also, the results showed higher EF magnitude on the straight shed compared to the alternate shed, under both clean and contamination conditions.


2021 ◽  
Vol 8 ◽  
pp. 23
Author(s):  
Guowei Li ◽  
Yong Wang ◽  
Xuexia Xu

The electric field distortion caused by the high voltage current environment in the cable terminal will greatly increase the failure probability and reduce the operation safety; therefore, it is necessary to ensure the uniform distribution of the electric field in the terminal. This paper briefly introduced the high-voltage cable terminal and non-linear materials. The traditional silicone rubber and the silicone rubber added with nano-SiO2 were prepared. The electrical conductivity of the two silicone rubbers was tested, and the electric field of the cable terminal was simulated. The results demonstrated that the nano-SiO2 improved silicone rubber had a higher non-linear conductivity and was less affected by temperature. The calculation results of the simulation model also showed that the distribution of the internal field strength was more uniform, and the maximum field strength on the reinforced insulation was smaller after the improved silicone rubber was used as the reinforced insulation.


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