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β射线检测聚4-甲基-1-戊烯泡沫密度梯度

β-ray Detecting Technology for Density Gradient of Poly 4-methyl-1-pentene Foams
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摘要 低密度多孔材料的密度均匀性及其梯度对材料性能有极其重要的影响.现有检测技术不能满足物理实验的检测需求,故新建一种β射线检测技术及相应软件,用以对低密度多孔材料的密度分布进行高灵敏定量表征.本工作叙及该系统的装置、原理和方法,通过对不同工艺制备的聚4-甲基-1-戊烯(TPX)泡沫进行测试,给出了样品密度分布的2D、3D图及密度不均匀度的统计图,并对不同样品泡沫进行对照,可明显看出泡沫密度均匀性的差异.该技术不仅满足了测量要求的空间及密度分辨率,还可实现轴向密度分布的无损检测以及径向密度分布测量.
出处 《原子能科学技术》 EI CAS CSCD 北大核心 2007年第z1期426-430,共5页 Atomic Energy Science and Technology
基金 国家自然科学基金资助项目(10574096)
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参考文献9

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