柔性玻璃制备及加工技术进展

柔性玻璃是柔性显示、柔性电子印刷等新兴领域发展的关键技术材料。柔性玻璃厚度极薄,生产中受玻璃本身特性、成形工艺、裁切及卷材工艺等因素的影响,生产难度极大,国内外柔性玻璃尚处于试验研发阶段。详细介绍了溢流下拉法、浮法、狭缝下拉法及二次拉引法四种柔性玻璃制备技术的发展历程,阐述了几大玻璃知名企业采用的柔性玻璃成形技术,同时总结了柔性玻璃切边、覆膜卷板、柔性玻璃增强等后续加工工艺,以期为我国的柔性玻璃研究提供参考。

Effect of TiO_2 on Crystallization of the Glass Ceramics Prepared from Granite Tailings

The effect of TiO2 on the crystallization behaviors of the glass ceramics prepared from granite tailings was investigated by differential scanning calorimetry （DSC）, X-ray diffraction （XRD）, and field emission scanning electron microscopy （FESEM）. The results showed that the crystallization peak temperature decreased firstly, and then increased with the increase of TiO2 content. The optimum addition amount of TiO2 was 8 wt%. With a single-step heat treatment at 924 ℃ for I h, augite precipitated as the only crystalline phase both on the surface and in the interior. The avrami parameter of the sample was 3.25, suggesting a two- dimensional crystallization mechanism. The activation energies for phase separation and crystallization of augite were 321.75 and 698.83 kJ/mol, respectively.

牵引速度对狭缝下拉法柔性玻璃拉薄过程的影响

采用狭缝下拉法拉制柔性玻璃,研究了一定条件下牵引速度对玻璃拉伸展薄过程的影响。实验结果表明:牵引速度的调整并不会影响狭缝出口玻璃液的流量,可通过调整牵引速率有效实现玻璃的减薄,同时,狭缝端部结构设计和定边辊在玻璃展薄过程中发挥着重要作用。