摘要
采用动态水热合成法制备了纳米硬硅钙石纤维,研究了石灰活性和石英粒度对硬硅钙石纤维合成过程的影响规律,同时,采用场发射扫描电镜(FESEM)、X射线衍射(XRD)等测试手段对硬硅钙石纤维微观形貌和物相进行分析和表征。结果表明:碳酸钙经1 000℃煅烧4 h后获得的石灰活性较高,与23μm粒径晶质石英粉反应并添加氧氯化锆作为添加剂,可制备纳米级硬硅钙石纤维,纤维直径约为82 nm,体积密度仅为70. 4 kg/m^3。研究结果可为超轻硬硅钙石纤维的工业化生产提供理论指导。
Nano xonotlite fibers were synthesized by hydrothermal method in this study.The effects of lime activity and silica powder particle size on the hydrothermal synthesis of xonotlite were studied,and the phase and microstructure of xonotlite fibers were characterized by x-ray diffractometer(XRD)and field emission scanning electron microscopy(FESEM).The results show that the activity of lime obtained by calcination for4hours at 1000℃ is higher than other temperatures.The lime combined with 23μm silica powder and ZrOCl2 as additive can synthesize nano-scale xonotlite fibers with diameter 82nm and bulk density 70.4kg/m3.The results can provide theoretical guidance for the industrial production of ultra-light xonotlite.
作者
肖宇
彭忠泽
封金鹏
XIAO Yu;PENG Zhongze;FENG Jinpeng(School Resources&Environment, Materials, Guangxi University, Nanning 530004, China)
出处
《矿产保护与利用》
2018年第6期94-97,102,共5页
Conservation and Utilization of Mineral Resources
基金
国家自然科学基金(51264002)
广西大学"国家级大学生创新创业训练计划"资助项目(20170593048)
广西自然科学基金项目(2018GXNSFAA138166)
关键词
硬硅钙石
水热合成
石灰
石英
纤维
xonotlite
hydrothermal synthesis
lime
silica
fibers
