RADIATION STUDY ON POLYMER-MATRIX COMPOSITE-MATERIALS

The present study is on the effect of gamma radiation on the electroco nductivity of two polymer - matrix composite materials and their appli cation. When the absorption dose came to the peak value dose 6 X 10(4) Gy, the electroconductivity of the graphite - PMMA composite materials reached a peak value of 14 s . m-1. The electroconductivity of the co pper - PMMA composite material decreased with the increase of the abso rption dose in the range of 4.0 X 10(4) to 7.5 X 10(4)Gy and then kept stable at about 2.5 X 10(-5) s . m-1. The two composite materials wer e analysed by infrared spectrum, microphotography and XPS. The two com posite materials are of amosphous structure. The two composite materia ls show excellent properties of polarogram. They can be used in polaro graphic analysis as solid electrode. Graphite - polymethyl methacrylat e can be powdered and mixed with plastics, rubber or coating as antist atic electric material.