无开裂K_2O—PbO—B_2O_3—SiO_2系统凝胶的研究  

Study on K_2O-PbO- B_2O_3-SiO_2 System Gel without Cracking

作　　者：吕文生[1] 周世珪[1] 沈定坤[2] 杜新民[2] 陈幼新[2] 

机构地区：[1]华东理工大学无机材料系,200237 [2]中国科学院上海硅酸盐研究所,200050

出　　处：《玻璃》1995年第4期1-4,共4页Glass

摘　　要：本文以二甲亚砜取代乙醇,并将凝胶进行热陈化处理,制得了无裂纹的K_2O-PbO-B_2O_3-SiO_2系统玻璃。其中,凝胶经热陈化处理平均孔径由36.5A提高到108.2A;以二甲亚砜取代乙醇,促进凝胶有机基因的分解,有利于凝胶向玻璃转变。A K2O-Pbo-B2O3-SiO2 system glass rod without cracks was obtained by substitu-ting dimethylsalfoxide for ethanol and by thermal aging. Through thermal aging, the average pore radius of gel is increased from 36.5A to 108.2A; replacement ethanol with dimethylsulfoxide which promotes the deposition of organic groups of gel network is helpful for gel to turn into glass. Thus the cracking of gel during heat treatment is restrained effeotively.

关 键 词：开裂 K₂O—PbO—B₂O₃—SiO₂系统 凝胶 

分 类 号：TQ427[化学工程]