摘要
以钛酸丁酯为原料,采用溶胶-凝胶法制备Ti(OH)_(4)溶胶。通过旋转流变仪作为主要表征手段,对Ti(OH)_(4)溶胶的黏度、流动性能、涂膜性能进行分析,研究了R(nCH_(3)COOH∶nH_(2)O)值对Ti(OH)_(4)溶胶流变特性的影响,阐述了溶胶流变性和涂膜性能的相关性。结果表明:当R逐渐增大至1.2~1.8时,Ti(OH)4溶胶表现为Bingham流体,初始黏度从0.270 Pa·s下降至0.156 Pa·s,流动系数接近于水;在R值低于0.9时,Ti(OH)_(4)溶胶表现为HerschelBulkley流体,初始黏度从0.304 Pa·s上升至3.011 Pa·s,流动系数从0.724下降至0.419。在R=0.9时,涂膜效果最佳,膜厚度约为10μm,表面光滑完整,对结晶紫的去除率可达95.5%。
Ti(OH)_(4) sol was prepared by the sol-gel method using butyl titanate as raw materials.The viscosity,flow properties and coating properties of Ti(OH)_(4) sol were analyzed by rotating rheometer as the main characterization means.The influence of R(nCH_(3)COOH:nH_(2)O)value on the rheological properties of Ti(OH)_(4)sol was studied,and the correlation between the rheological properties of sol and coating properties was expounded.Results showed that when R gradually increased from 1.2 to 1.8,Ti(OH)_(4) sol appeared as Bingham fluid,the initial viscosity decreased from 0.270 Pa·s to 0.156 Pa·s,and the flow coefficient was close to water;When the R was lower than o.9,Ti(OH)_(4)sol appeared as Herschel-Bulkley fluid,the initial viscosity increased from 0.304 Pa.s to 3.011 Pa·s,and the flow coefficient decreased from 0.724 to 0.419.In addition,when R=0.9,the film thickness was about 10μm,and the surface is smooth and intact,the removal rate of crystal violet reached 95.5%.
作者
段宁
李崇瑞
陆成龙
张银凤
张湘泰
李幸泽
熊江敏
DUAN Ning;LI Chongrui;LU Chenglong;ZHANG Yinfeng;ZHANG Xiangtai;LI Xingze;XIONG Jiangmin(School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation,Hubei Polytechnic University,Huangshi 435003,China;Hubei Engineering Research Center for Collaborative Technology of Advanced Material Manufacturing and Solid Waste Recycling,Hubei Polytechnic University,Huangshi 435003,China)
出处
《中国陶瓷》
CAS
CSCD
北大核心
2023年第3期38-45,共8页
China Ceramics
