抛光砖废渣复合发泡法制备闭孔泡沫陶瓷

发布时间：2018-05-31 06:45

  本文选题：抛光砖废渣 + 闭孔泡沫陶瓷　； 参考：《材料导报》2017年20期

【摘要】：以抛光砖废渣粉为主要原料,采用复合发泡法制备高温发泡陶瓷。通过正交试验确定了发泡剂的复合比,研究了复合发泡机制及烧成制度对发泡体孔结构和性能的影响。结果表明,多种发泡剂协同作用,拓宽了单一发泡剂的放气温度区间,利于形成均匀封闭的气孔结构。按炭黑、碳酸钙、氧化铁、碳化硅质量比1∶3∶1.5∶1(四者占反应体系的总质量分数为6.5%)与瓷粉等混合制坯,程序升温至1 160℃下保温100min,可制得闭气孔率为62.94%,气孔直径为1.2~1.9mm,体积密度为369kg/m~3,吸水率为0.44%,导热系数为0.079 W/(m·K)的闭孔泡沫陶瓷。
[Abstract]:High-temperature foamed ceramics were prepared by composite foaming method with polished brick slag powder as main raw material. The composite ratio of foaming agent was determined by orthogonal test, and the effects of compound foaming mechanism and sintering system on the pore structure and properties of foaming agent were studied. The results show that the synergistic effect of various foaming agents widens the degassing temperature range of a single foaming agent and is conducive to the formation of a uniform and closed pore structure. According to the mass ratio of carbon black, calcium carbonate, iron oxide and silicon carbide to 1: 3: 1.5: 1 (the total mass fraction of the reaction system is 6.5), the mass ratio of carbon black, calcium carbonate, iron oxide and silicon carbide is mixed with porcelain powder. The closed cell foam ceramics with closed air porosity of 62.94 mm, pore diameter of 1.2 ~ 1.9mm, volume density of 369kg / m ~ (-3), water absorption of 0.44 and thermal conductivity of 0.079 W / m ~ (K) can be prepared by programmed heating to 1 160 鈩，

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