摘要
采用DTA、IR方法研究TiO2对CaO-Al2O3-SiO2玻璃体系结构的影响。DTA分析结果表明,随氧化钛质量分数的变化,玻璃转变温度Tg呈现先升高后降低的趋势;析晶放热峰值温度Tp则逐渐降低。IR分析表明,少量的Ti4+的引入,有助于Al3+进入玻璃网络中。当氧化钛质量分数超过4%时,Ti4+以[TiO4]的形式进入玻璃网络,使网络结构加强;当氧化钛质量分数达到8%时,出现六配位状态的[TiO6]8-。随着氧化钛质量分数的增加,密度逐渐增大;化学稳定性先降低后升高,在一定范围内,引入TiO2能提高玻璃耐碱性。
The effect of TiO2 on the CaO-Al2O3-SiO2 glass system was studied by DTA and IR. The DTA analysis showed that with the change of titania content, the glass transition temperature （Tg） increased at first and then decreased,and the crystallization exotherm peak temperature （Tp） decreased gradually. The IR analysis showed that the introduction of a small amount of Ti4＋ was helpful for Al3＋ to enter the glass network. When the titania content exceeded 4%, Ti4＋ in form of [TiO4] entered the glass network, making the network stronger. When the titania content reached 8%, six-coordination state [TiO6]8appeared. With the increase of titania content, the density increased granually. The chemical stability decreased at first and then increased. In a certain range, the introduction of TiO2 can increase the alkali resistance of glass.
出处
《玻璃纤维》
CAS
2012年第2期1-4,8,共5页
Fiber Glass
基金
山东省优秀中青年科学家奖励基金(BS2009CL057)
