• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Radiation Degradation of Polytetrafluoroethylene-Lead Composites
【24h】

Radiation Degradation of Polytetrafluoroethylene-Lead Composites

机译：聚四氟乙烯-铅复合材料的辐射降解

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Composites of polytetrafluoroethylene (PTFE) with Pb (0-15 wt.%) were fabricated and irradiated up to 50 kGy in a Co-60-gamma chamber to evaluate the effect of Pb in improving the radiation tolerance of PTFE. Thermal and mechanical properties were measured for the irradiated and un-irradiated PTFE samples and its composites. The number average molecular weight of PTFE was estimated at different doses from the enthalpy of crystallization values obtained by Differential Scanning Calorimetry. Reduction in the percentage increase in the enthalpy of crystallization and melting of PTFE-15% Pb composite, during irradiation indicated the stabilizing effect of lead on PTFE. Surface morphology of PTFE and its composites revealed that the formation of micro-cracks and blisters in PTFE, owing to radiation damage was controlled by lead. Elongation at break values and SEM images of the irradiated composites indicated that 15% Pb offered better stability to PTFE than 10% Pb.
机译：制备了具有Pb（0-15 wt。％）的聚四氟乙烯（PTFE）复合材料，并在Co-60-γ腔室中辐照高达50 kGy，以评估Pb在改善PTFE耐辐射性中的作用。测量了辐照和未辐照的PTFE样品及其复合材料的热性能和机械性能。由差示扫描量热法得到的结晶值的焓，以不同的剂量推定PTFE的数均分子量。辐照期间PTFE-15％Pb复合材料的结晶焓和熔融焓增加百分比的降低表明铅对PTFE具有稳定作用。 PTFE及其复合材料的表面形态表明，由于辐射破坏，PTFE中微裂纹和水泡的形成受铅控制。辐照复合材料的断裂伸长率值和SEM图像表明，与10％Pb相比，15％Pb对PTFE的稳定性更好。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号