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首页> 美国政府科技报告 >Absorbed dose thresholds and absorbed dose rate limitations for studies of electron radiation effects on polyetherimides
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Absorbed dose thresholds and absorbed dose rate limitations for studies of electron radiation effects on polyetherimides

机译：吸收剂量阈值和吸收剂量率限制用于研究电子辐射对聚醚酰亚胺的影响

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The threshold values of total absorbed dose for causing changes in tensile properties of a polyetherimide film and the limitations of the absorbed dose rate for accelerated-exposure evaluation of the effects of electron radiation in geosynchronous orbit were studied. Total absorbed doses from 1 kGy to 100 MGy and absorbed dose rates from 0.01 MGy/hr to 100 MGy/hr were investigated, where 1 Gy equals 100 rads. Total doses less than 2.5 MGy did not significantly change the tensile properties of the film whereas doses higher than 2.5 MGy significantly reduced elongation-to-failure. There was no measurable effect of the dose rate on the tensile properties for accelerated electron exposures.

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