Silicone rubber filled wollastonite mineral filler for high voltage insulation application

Rizali, Sahril (2018) Silicone rubber filled wollastonite mineral filler for high voltage insulation application. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This thesis presents the preparation of artificial reinforcement filler for polymeric composite insulation for high voltage outdoor application. Silicone Rubber (SiR) is considered as one of the most established insulator in High Voltage (HV) industry. SiR possesses great function ability such as its lighter weight, great heat resistance and substantial electrical insulation properties. Dynamic researches were performed all around the world in order to explore the unique insulating behaviour of SiR but not much of attention was given to the analysis of the surface resistivity, relative permittivity and inclined plane tracking and erosion testing of SiR despites of their importance in determining SiR performances electrically. Therefore, this three testing was performed in this research. High surface resistivity represents the sturdiness of SiR from outside while good relative permittivity reading especially at high frequency represents the ability of the material’s bulk to withstand high electrical stress. Inclined plane tracking and erosion represent the electrical resistivity of the of material. Compounding process using open two roll mill and vulcanized process using hot press was the method used to produce SiR/CaSiO3 composites. The characterization used in this research are Particle size analysis (PSA), X-ray diffraction (XRD) and Scanning electron microscopy (SEM). SiR/40wt.% CaSiO3 composites shows the good performance as insulator performance for high voltage insulation application compare to other composites equal to 4.70 relative permittivity, 3.7 x 1013 Ω/sq for surface resistivity, the lowest mass losses (0.02g) for erosion and pass the inclined plane test.

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