CHEMICAL EFFECTS OF DCCA TO THE SOL-GEL REACTION PROCESS

被引：53

作者：

UCHIDA, N

ISHIYAMA, N

KATO, Z

UEMATSU, K

机构：

[1] Department of Chemistry, Nagaoka University of Technology, Nagaoka

来源：

JOURNAL OF MATERIALS SCIENCE | 1994年 / 29卷 / 19期

关键词：

D O I：

10.1007/BF01151115

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of drying control chemical additives (DCCA) on the growth of silica particles, gelation time and physical properties of the dry gel were examined in a two-step silica sol-gel process. N,N-dimethylformamide, N,N-dimethylacetamide and ethylene glycol (EG) were applied as DCCAs. The shapes of growing silica particles were distorted spheres on addition of DCCA. EG accelerated the gelation process. Despite the use of DCCA, crack-free, dry gels were obtained only under limited conditions.

引用

页码：5188 / 5192

页数：5

共 8 条

[1] PREPARATION OF MONOLITHIC SILICA-GEL AND GLASS BY THE SOL-GEL METHOD USING N,N-DIMETHYLFORMAMIDE [J].