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Student from the Department of Applied Science gain Master's for the preparation and study of electrical and mechanical durability properties of polymer and ceramic complexes |
Student from the Department of Applied Science gain Master's for the preparation and study of electrical and mechanical durability properties of polymer and ceramic complexes
The committee consisted of discussion of Prof. Balkis Mohammad president and Prof. Dr. Ahmad Hammad, from the Faculty of Education, Pure science at Anbar University and L.Abdul Latif useful members and dr. Shehab Ahmed supervisor and Prof. Dr. Basma Mohammed expert and scientifically L. Mustafa Rahim linguistical expert.
The researcher revealed that he has been in this business Add silica powdered (SiO2) different proportions by weight (3.75,7.5,11.25,15 wt%) to the epoxy polymer and the size of Habibi (63 μm). After forming manner stereotyping hand cut samples and studied electro-mechanical durability. And it found that the strength of electrical insulation vary with the thickness of the samples. As well as decreases with decreasing the average time for the rise of voltages due to thermoelectric effects. He also dropped the durability of electrical insulation with the increase in the proportion of silica added. And the coefficient Jonk to test the durability of the bow has increased its value increased Addition ratio, and through knowledge of the effect of silica content on the durability of the dielectric coefficient Jonk is determined by the relationship between the strength of electrical insulation, mechanical and durability properties, so as to estimate the deterioration in the mechanical properties as a result of electrical breakdown Insulation electrical. The Shore D hardness and Vickers hardness microwave and tensile strength has increased with the increase in added all proportion because of the transformation of the material properties of ductility to fragile.
It appeared cracks microscopic abnormalities irregularly in the range of electrical breakdown area at high additions of silica, while the case of the Fusion and perforation and regularity of electrical breakdown of the samples with added low-lying ratios and epoxy point without popping in addition, this means that the amount of deterioration in the structure of the insulation material is less in the case of adding silica despite the decrease in the strength of electrical insulation as a result of these additions.