Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Dielectric strength

The Effect of Ferrite Content on the Thermomechanical and Dielectric Strength Properties of Epoxy Composite

Lamees S. Faiq; Zahraa F. Attiyah

Engineering and Technology Journal, 2016, Volume 34, Issue 1, Pages 186-192

Different concentrations of cadmium ferrite (2%, 5%, 8%, 10% and 15%) were incorporated into epoxy resin. Cadmium ferrite was prepared by conventional ceramic technique. Composites are prepared by mixing the ferrite with epoxy by hand lay - up method at different percentages. The effect of ferrite content on tensile strength, hardness, thermal properties such thermal conductivity, thermal diffusivity and specific heat beside the dielectric strength were investigated. Using ferrite powders as filler to form particulate composite could lead to composite properties improvement. All the measured properties were improved with the increasing of the filler content. The results showed the important role of perfect adhesion between the filler and the polymer on the composite properties. It is found that the uniform distribution of filler particles in all directions of composite leads to the improved properties.

Studing Some Effective Parameter on The Dielectric Properties of Composite Materials Containing of Un Saturated Polyester Resin

Anaam Wadi Watan; Suad Hammed Aleabi

Engineering and Technology Journal, 2015, Volume 33, Issue 3, Pages 83-90

The studyof dielectric constant (єr) and the dielectric strength (Ebr) of the composite materials consist of the unsaturated polyester resin reinforced with aluminum powder and unsaturated polyester resin reinforced with aluminum powder and the copper oxide .The composites were made in different weight fraction (5%,10%,15).
The results showed that dielectric strength decreases with thickness increase and decrease with the weight fraction. But the dielectric constant decrease with the frequency increase and increase with the weight fraction increase.