摘要
分析了酯法比ＣＯ＿２法水玻璃砂强度高的原因，指出充分发挥水玻璃粘结效率的关键在于细化水玻璃凝胶胶粒。据此，选用能阻抑胶粒长大的化合物对水玻璃进行改性，有效地提高了水玻璃砂的粘结强度，透射电镜观察证实，改性水玻璃比普通水玻璃的凝胶胶粒细小。
Investigations carried out on which. bonding strength of sodium silicate cured by CO2 isworse than that cured by organic ester say that the particle size of silicate gel is not small e-nough.Some chemical compounds that will inhibit the growth of gel particles have been usedin the modification. It has been confirmed bv observations with a transmission electron mi-croscope that the gel particles of modified sodium silicate are much finer than those of com-mercially available sodium silicate.
出处
《华中理工大学学报》
CSCD
北大核心
1995年第1期81-84,共4页
Journal of Huazhong University of Science and Technology
基金
国家教委博士点基金
关键词
铸造
水玻璃
凝胶
粘结
二氧化碳
硬化
改性
modified sodium silicate
CO2 gas curing
gel particles
bonding strength
