Effect of Gamma Irradiation on Electrical Conductivity of Polymer Composites of Polypropylene with Oxides of Aluminum and Iron

CZU 541.64

The effects of gamma irradiation on the electrician conductivity of composites of polypropylene (PP) with various percentages of fillers α-Al₂O₃ and α-Fe₂O₃ have been investigated. It has been established that the senility to radiation is associated with the amount of filler α-Al₂O₃, which is reflected as the dependence of logarithmic values of resistivity on temperature and on the radiation dose. It has been found out that by changing the composition percentage of fillers and dose the irradiation can be modified and physical properties of the composite materials under study can be controlled.

Keywords: electret, resin, polypropylene, aluminum oxide, iron oxide, electro conductivity, γ-radiation.