材料科学与工程2001，Vol.19Issue(1)：94-98,5.
锡酸四丁酯［［Sn(OBun)4］水解缩合实验研究
Experimental Study on Hydrolysis and Condenation of Tetrabutylorthostannate［［Sn(OBun)4］
摘要
Abstract
In this paper,it was investigated experimentally that the SnO2 sol solution stability in teh sol-gel process derived by the precursor Tetrabutyiorthostannate (Sn(OBun)4:TBOS) was dramatically influenced by stability agent Acetylacetone (acacH),catalyst species,solution pH values.Based on the experimental observations, the sol stability role of agent acacH correlated to the chelate intermediate Sn(OBun)2(acac)2 as well as catalysis mechanismi were suggested through convincing discussion.It is revealed from rheological measurements of SnO2 sol systems that the relationship between the intrinsic viscosity ［η］ and the sol solution concentration of SnO2 sol particles is in good agreement with Quasi-Linear model of macromolecules,the functionality of modified monomer f is approximately equal to 2。0,and SnO2 sol particles show themselves as quasi-linear chain.On the other hand,its fractal dimension D≈1.80,and fractal structure stands between self-avoiding walk (SAW) chain and random Gussian chain.The evidence that the chelate intermediate Sn(OBun)2(acac)2 exists in the sol-gel process is presented by this study.关键词
SnO2溶胶体系/溶胶液稳定性/螯合中间体/分形结构分类
通用工业技术引用本文复制引用
郭玉忠,黄瑞安,王剑华..锡酸四丁酯［［Sn(OBun)4］水解缩合实验研究[J].材料科学与工程,2001,19(1):94-98,5.基金项目
国家科委重点科技攻关项目 （）
