硅酸盐通报2025，Vol.44Issue(7)：2388-2395,8.DOI:10.16552/j.cnki.issn1001-1625.2024.1561
铝硅复合微胶囊的制备及其在水泥基材料中的应用
Preparation of Aluminum Silicon Composite Microcapsules and Application in Cement-Based Materials
摘要
Abstract
In order to realize the slow-controlled release of inorganic salt-accelerating materials in cement-based materials and achieve the effect of time-varying regulation of cement setting and hardening,in this paper,aluminum sulfate(AlS)was used as the core material and tetraethyl orthosilicate(TEOS)was used as the precursor to prepare aluminum silicon composite microcapsules(SiO2-AlS)with nano-SiO2 as the shell and AlS as the core.The structure of SiO2-AlS was characterized by nitrogen adsorption specific surface area method,laser particle size analysis,X-ray diffraction and scanning electron microscopy.The feasibility of the preparation method was verified,and the slow-release effect and application performance of SiO2-AlS were investigated.The results show that the prepared SiO2-AlS shows slow-release effect in solution,which can promote the hydration process of cement,shorten the setting time,and improve the early compressive strength of cement-based materials.However,SiO2-AlS has little effect on the initial fluidity of cement-based materials,which can meet the construction requirements.关键词
硫酸铝/SiO2/微胶囊/凝结时间/流动度/抗压强度Key words
aluminum sulfate/SiO2/microcapsule/setting time/liquidity/early compressive strength分类
建筑与水利引用本文复制引用
吴庆勇,赵爽,韩斌,王伟,乔敏,杜爽,陈俊松..铝硅复合微胶囊的制备及其在水泥基材料中的应用[J].硅酸盐通报,2025,44(7):2388-2395,8.基金项目
江苏省自然科学基金(SBK2022020408) （SBK2022020408）
国家重点研发计划(2023YFB3711400) （2023YFB3711400）
南京市科技计划(202401033) （202401033）
