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Paper Information

Title: 

STUDY OF THE ELECTRICAL AND THERMAL PROPERTIES AND ACCELERATED AGEING OF SILICON RUBBER

Type: PAPER
Author(s): MESHKATODDINI M.R.*
 
 *ELECTRIC MATERIALS RESEARCH UNIT, ELECTRICAL ENGINEERING DEPARTMENT, PWIT UNIVERSITY, TEHRAN, IRAN
 
Name of Seminar: INTERNATIONAL POWER SYSTEM CONFRENCE
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVANIR
Date:  2004Volume 19
 
 
Abstract: 

SILICON RUBBER IS ONE OF THE INSULATING MATERIALS WHICH ARE INCREASINGLY USED IN ELECTRIC INDUSTRY.
IN THIS RESEARCH ELECTRICAL AND THERMAL AGEING STRESSES WERE APPLIED TO DIFFERENT SPECIMENS OF SILICON RUBBER. THESE EXPERIMENTS WERE ACCOMPLISHED TO INVESTIGATE THE AGEING BEHAVIOR OF THIS MATERIAL UNDER SEVERE AMBIENT CONDITIONS AND TO PRESENT A METHOD TO ESTIMATE ITS REMAINING LIFETIME. IT WAS SHOWN THAT MERELY APPLICATION OF ELECTRIC VOLTAGE, UP TO SURFACE FLASHOVER VOLTAGE OF THE SPECIMENS, DURING A SHORT PERIOD IS NOT ABLE TO CAUSE A DEGRADATION; BUT OTHER AMBIENT AGEING FACTORS SUCH AS HEAT, POLLUTION, SALT FOG OR ULTRA-VIOLET RADIATION ARE NECESSARY TOO.
TEMPERATURES HIGHER THAN 350OC CAN CAUSE AGEING AND DEGRADATION IN SILICON RUBBER. THIS PHENOMENON IS IN AGREEMENT WITH ARRHENIUS LAW, AND THE REMAINING LIFETIME OF THE INSULATION CAN BE ESTIMATED BY USING IT. THE INFLUENCE OF THERMAL TREATMENT ON RAW SILICON AND FINAL SILICON RUBBER PRODUCT ARE ALSO STUDIED IN THIS PAPER AND ITS FLASH POINT HAS BEEN MEASURED.

 
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