摘要
采用色谱/质谱联用技术研究了一种复合硅醇盐:乙氧-叔丁氧基硅烷[Si(OEt)x(OBut)4-x]的水解-聚合过程.测定了水解过程不同阶段胶体中各物质的水解行为、空间结构构成以及含量的变化.结果表明:Si(OEt)(OBut)3具有高于Si(OEt)2(OBut)2的水解速率,随着水解的进行,二聚体和三聚体相继形成.
The hydrolysis and polymerization processes of the hybridized Si(OEt)x(OBut)4-x were investigated by gas chromatogram/mass spectrum technique. The hydrolyzation behaviors,steric configurations and abundance percentage of different hydrolytic products were investigated in detail. The results show that Si(OEt)(OBut)3 is immediately hydrolyzed and its reaction rate is higher than that of Si(OEt)2(OBut)2. Dimers turned up soon after the mixing of Si(OEt)x(OBut)4-x with water, and two kinds of trimers were formed successively.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1998年第3期338-343,共6页
Journal of The Chinese Ceramic Society
基金
中日合作研究项目
关键词
水解
聚合
色谱法
质谱法
叔丁氧基硅烷
hybridized alkoxide, hydrolysis/polymerization, gas chromatogram/mass spectrum technique