造孔剂对粉煤灰基多孔陶瓷性能的影响

发布时间：2018-04-21 19:15

本文选题：粉煤灰基多孔陶瓷 + 造孔剂　；参考：《新型建筑材料》2017年07期

【摘要】：利用粉煤灰、赤泥为主要原料制备粉煤灰基多孔陶瓷,研究漂珠和氧化铝空心球2种造孔剂对粉煤灰基多孔陶瓷的基本物性和微观结构的影响。SEM显示漂珠制备的粉煤灰基多孔陶瓷中漂珠大部分形成的是闭气孔,而氧化铝空心球颗粒外壳之间相互发生反应,晶体向空心球内部增长,形成较多的连通气孔,影响其保温性能和强度。在造孔剂掺量为15%时,漂珠制备的多孔陶瓷收缩率比氧化铝空心球制备的低6.7%,气孔率高3.7%,性能稳定。
[Abstract]:Fly ash based porous ceramics were prepared by using fly ash and red mud as main raw materials. The effect of two kinds of pore-making agents on the basic physical properties and microstructure of fly ash based porous ceramics. SEM shows that most of the floating beads are air-closed pores in the fly ash based porous ceramics prepared by drifter beads and alumina hollow spheres, and the effect of these two pore-making agents on the basic physical properties and microstructure of fly ash based porous ceramics is studied. However, the shell of alumina hollow spheres reacts with each other, and the crystal grows into the hollow spheres, forming more continuous air holes, which affect the thermal insulation performance and strength of alumina hollow spheres. When the amount of pore-forming agent is 15, the shrinkage of the porous ceramics prepared by bleach beads is 6.7% lower than that prepared by alumina hollow spheres, and the porosity is 3.7. the properties of the porous ceramics are stable.
【作者单位】：重庆交通大学土木工程学院;云南省建筑科学研究院;
【分类号】：TQ174.1

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