【摘要】 利用X-射线小角度散射法测定颗粒的尺寸及其分布已经是众所周知并得到广泛应用的方法,但是,利用该方法测定多孔材料的孔径及其分布还没有得到普遍的重视和应用。本文是利用X-射线小角度散射法进行离子交换树脂孔尺寸测定的初步尝试,目的是为以后用此法测定溶胀态下离子交换树脂的孔结构打下基础,而溶胀态下树脂的孔结构这个有重大实际意义的课题是用其它方法,比如压汞法,吸附法和BET等方法很难解决并且直到现在还没有解决的一个问题。文中主要叙述方法的理论基础,实验布置及部分干态下树脂平均孔径及其分布均结果,重点讨论克拉基小角散射装置的特点和实验方法。更多还原

【Abstract】 The measurement of the size and distribution of particals through the SAXS (small angle X-ray scattering) method has been widely known and used, yet the measurement of the hole size and distribution of porous materials through this method has not been widely valued and used·This paper is a preliminary study of the measurement of the hole size through SAXS method, for the purpose of ets ting the first steps for measuring the hole size of expanded ion exchange resin in solvent through the same method.The question of the measurement of the hole size of the expanded ion exchange resin in solvent is of great importance and is still difficult to be solved through other methods, like mercury porosimetry, absorption process, and BET method, The paper states mainly the basic theroy, the experiment procedure of this method and the result of the distribution and the average hole size of ion exchange resin in a partly dry state, and discusses in detail the experimental method and feature of Kratry’s small angle X-ray scattering device.更多还原