Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10732255 | Radiation Physics and Chemistry | 2005 | 5 Pages |
Abstract
Structure and mechanical properties of polycarbonate (PC) were investigated with varied electron beam processing parameters such as dose, dose rate and dose fractionation. PC showed noticeable decrease in ductility after doses of 100Â kGy; a decrease in tensile strength is relatively minor. Molecular weight degradation was also noticed after 100Â kGy. At 150Â kGy and high dose rate (21Â kGy/s), the tensile strength and ductility were evaluated against dose fractionation. It was found that tensile strength and ductility decreased with increasing number of passes, which resulted from longer cooling off times. The same temperature effect was observed with lower dose rate (1.2Â kGy/s) when mechanical properties of irradiated samples were decreased significantly compared with samples irradiated with higher dose rate. No significant variation in molecular weight change was noticed in both cases.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
J. Chen, M. Czayka, Roberto M. Uribe,