Method for preparing elongated-shaped silica sol
作者： Yoshiyuki Kashima , Yoshitane Watanabe , Hiroyuki Takagi
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摘要: A method for preparing a silica sol having an elongated shape comprising step (a) where aqueous solution containing water-soluble calcium salt or magnesium mixture of the is mixed with colloidal active silicic acid; (b) alkaline substance liquid obtained in (a); (c) part whole heated at 60° C. higher to obtain heel and feed prepared by separately added solution; water evaporated during said addition so that SiO2 concentration concentrated 6 30% weight.
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