二乙醇单异丙醇胺-三异丙醇胺激发沸石粉后期活性机理研究  

Late Activity Mechanism of Zeolite Powder Activated by Diethanol-Isopropanolamine and Triisopropanolamine

作　　者：王信刚[1] 陈涛 赵华 李玉洁 WANG Xingang;CHEN Tao;ZHAO Hua;LI Yujie(School of Civil Engineering and Architecture,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学建筑工程学院,南昌330031

出　　处：《硅酸盐通报》2021年第9期2891-2897,共7页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(52062032,51972158);江西省主要学科学术和技术带头人-领军人才项目(20204BCJ22001)。

摘　　要：以二乙醇单异丙醇胺-三异丙醇胺(DEIPA-TIPA)为助磨增强剂激发沸石粉后期活性。采用激光散射粒度分布分析仪表征沸石粉的粒径分布,采用X射线衍射仪(XRD)、环境扫描电子显微镜(ESEM)、热重分析仪(TGA)分别表征水泥水化产物的成分、微观形貌、氢氧化钙(CH)含量。结果表明,加入0.04%(质量分数)的助磨增强剂(m(DEIPA)∶m(TIPA)=6∶4),沸石粉比表面积提高了85.4 m 2·kg^(-1),平均粒径减小了1.45μm。水泥胶砂中掺入10%(质量分数)活化激发的沸石粉,沸石粉28 d活性指数提高了7%。DEIPA-TIPA助磨增强剂通过吸附-分散作用和络合作用促进了沸石粉-水泥体系的水化过程以及沸石粉的二次水化反应,在一定程度上提高了水化产物的均匀性和密实度,从而起到提高水泥胶砂强度的作用。Diethanol-isopropanolamine and triisopropanolamine(DEIPA-TIPA)grinding&enhancing aid(GEA)was used for activating the late activity of zeolite powder(ZP).The particle size distribution of ZP was characterized by laser scattering particle size distribution analyzer.The composition,micro-morphology,CH content of hydration products were characterized by XRD,ESEM and TGA.The results show that the specific surface area of ZP increases by 85.4 m 2·kg^(-1)and the average particle size decreases by 1.45μm when 0.04%(mass fraction)GEA(m(DEIPA)∶m(TIPA)=6∶4)is added.Adding 10%(mass fraction)activated ZP to cement mortar,the activity index of ZP increases 7%in 28 d.DEIPA-TIPA GEA promotes the hydration process of ZP-cement system and the secondary hydration reaction of ZP through adsorption-dispersion mechanism and complexation,which enhances the strength of cement mortar to a certain extent by improving the uniformity and compactness of hydration products.

关 键 词：沸石粉 助磨增强剂 活化激发 吸附-分散作用 络合作用 

分 类 号：TQ172[化学工程—水泥工业]