Preparation of high performance ceramic tiles using waste tile granules and ceramic polishing powder

This paper presents an innovative approach to reusing waste tile granules(TG) and ceramic polishing powder(PP) to produce high performance ceramic tiles.We studied formulations each with a TG mass fraction of 25.0% and a different PP mass fraction between 1.0% and 7.0%.The formulations included a small amount of borax additive of a mass fracton between 0.2% and 1.2%.The effects of these industrial by-products on compressive strength,water absorption and microstructure of the new ceramic tiles were investigated.The results indicate that the compressive strength decreases and water absorption increases when TG with a mass fraction of 25.0% are added.Improvement of the compressive strength may be achieved when TG(up to 25.0%) and PP(up to 2.0%) are both used at the same time.In particular,the compressive strength improvement can be maximized and water absorption reduced when a borax additive of up to 0.5% is used as a flux.Scanning electron microscopy reveals that a certain amount of fine PP granules and a high content of fluxing oxides from borax avail the formation of glassy phase that fills up the pores in the new ceramic tiles,resulting in a dense product with high compressive strength and low water absorption.

瓷质抛光砖表面显微结构与防污性能的关系探讨

采用光学显微镜、扫描电镜等对抛光砖的表面显微结构进行了研究。结果表明:气孔率对抛光砖的防污性能有明显影响,但抛光砖中石英晶体在冷却过程中与玻璃体膨胀系数的差异产生的热应力,促使玻璃体沿石英周边形成了微裂纹,抛光时机械力的作用使晶粒剥落造成表面孔洞,是造成瓷质抛光砖容易吸污的主要原因之一。

提高瓷质抛光砖表面防污性能的研究

从瓷质抛光砖的制备烧结过程和抛光过程阐述了瓷质抛光砖表面普遍存在的抗污染性能差、防污时效短等缺陷产生的原因,并根据瓷质抛光砖表面防污原理从生产工艺到外加剂两方面分析了提高瓷质抛光砖表面防污性能的可行方案和措施,着重讨论了使用自制外加剂来提高瓷质抛光砖表面防污性能的作用机理、防污效果及其发展应用的前景和意义,通过显微照片的对比分析也说明该自制外加剂的使用不仅能提高瓷砖表面的抗污染性能,同时也提高了砖表面的视觉效果。