摘要
阐述了水玻璃改性剂的各种作用机理:阻缓老化、细化凝胶基本颗粒、扩大粘结颈截面积、改变胶粒配位数及胶粒表面憎永化以减轻失永收缩等。提出了筛选改性剂的五项原则,基于上述原则,作者成功地研制了一种复合改性剂,它的使用效果证明了上述理论的可靠性。
Abstract
The various functions of water-glass modifleant, involving delaying the aging, subdividing the foundamental grain size of silica gel, enlarging the cross-section of bonding-neck, increasing the coordinated number of foundamental grain and hydrophobiclizing the surface of silica gel to reduce the dehydrating shrinkage, have been discussed in this paper. On the basis of those principle, the authors have suggested five-point principle in choosing modificant and developed an effective compound modif leant, application of which proved the reliability of above theory.
出处
《铸造》
CAS
CSCD
北大核心
1991年第3期23-27,共5页
Foundry
