偏高岭土在NaOH溶液中的反应过程与结构演变研究  

Study on Reaction Process and Structural Evolution of Metakaolin in Sodium Hydroxide Solution

作　　者：许悦 刘乐平 XU Yue;LIU Le-ping(College of Chemistry and Materials,Guangxi Key Laboratory of Natural Polymer Chemistry and Physics,Nanning Normal University,Guangxi Nanning 530001,China)

机构地区：[1]南宁师范大学化学与材料学院,广西天然高分子化学与物理重点实验室,广西南宁530001

出　　处：《广州化工》2022年第6期58-61,共4页GuangZhou Chemical Industry

基　　金：广西科技引导创新项目(No:AC19050011)。

摘　　要：从NaOH激发偏高岭土材料具有较低的力学强度这一问题入手,以偏高岭土和NaOH溶液为主要原材料,制备碱激发偏高岭土净浆。研究在不同温度下,不同搅拌时间对试样反应产物的影响以及微观结构的变化。本研究结果表明在-20℃、0℃和20℃三个温度下,随着搅拌时间的延长,最终的反应产物均为凝胶结构以及具有较高结晶度的沸石结构。Starting from the problem of low mechanical strength of NaOH activated metakaolin materials,metakaolin and NaOH solution were used as the main raw materials to prepare alkali-activated metakaolin slurry.The effects of different stirring times and different temperatures on the reaction products of the samples and the changes in the microstructure were studied.The results showed that at three temperatures of-20℃,0℃and 20℃,with the prolongation of time,the final reaction products were all gel structure and zeolite structures with high crystallinity.

关 键 词：偏高岭土 NAOH 结构演变 低温 

分 类 号：TU521.3[建筑科学—建筑技术科学]