同步辐射二维小角X光散射实验装置的建立与应用

与一维小角散射实验法相比,二维小角X光散射实验法可用于研究非球对称的体系,即可探测物质中取向体系的颗粒度(或孔径)的变化、颗粒(或孔)形状的变化等信息.介绍了北京同步辐射装置二维小角X光散射实验设备的建造及所建立的分析方法,并用于研究不同活化剂条件下制备出来的沥青基活性炭纤维中孔分布的变化,得到了炭纤维中的孔的平均体积随活化剂中NH3含量的降低而变大的结论.

The Establishment of a Synchrotron Radiation Two Dimensional Small Angle X-Ray Scattering Equipment and It′s Application

Compared with the method of one dimensional small angle X-ray scattering, two dimensional small angle X-ray scattering has the advantage of being able to study non-global symmetric system, thus to obtain the information about size and shape of particles (or holes) in oriented system. In this paper we report the establishment of a two dimensional synchrotron radiation small angle X-ray scattering device in Beijing Synchrotron Radiation Facility and the data analysis method developed. The results of an experiment on pitch-based carbon fiber with this device show the voids in pitch-based carbon fiber become larger as NH 3 content in the activator decreases in the activating process.