摘要
利用溶胶-凝胶法制备块玻璃、玻璃纤维、粉末和陶瓷材料等方面的研究成果早已有所介绍。从能量观点看,这种方法是可行的。用溶胶-凝胶法制得的玻璃,同用常规法获得的组成相同的玻璃相比,具有相同的物理性质与化学性质。它还具有高纯度、高均匀度等的特点。由于溶胶-凝胶法的合成温度较低,同常规玻璃生产方法相比,大大降低了能耗。溶胶-凝胶法特别适合于制备难熔玻璃和高温下不稳定的玻璃,几种处于微分相区域的含碱或碱土金属的硅酸玻璃已用该法制备出来。这在一定程度上扩大了玻璃形成范围。 本文介绍利用溶胶-凝胶法制备玻璃,其组成均处在常规法中CaO-SiO_2系统微分相区域。
In this work gels and glasses, in immiscible region of CaO-SiO2 system were prepared by sol-gel process. TG. DTA and IK spectra of the gels were measured and gelling time of the sols was determined under different conditions. The experimental results showed that under acidic condition all the samples of various compositions in CaO-SiO2 system have a minimum gelling time which decreases with the increase of CaO content. Hydrolysis-polymerization, gel-to-glass process were also investigated.
出处
《玻璃与搪瓷》
CAS
北大核心
1990年第4期5-9,共5页
Glass & Enamel
