Preparation of high strength foam glass-ceramics from waste cathode ray tube
Preparation of high strength foam glass-ceramics from waste cathode ray tube
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DOI：
10.1016/j.matlet.2010.02.006
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发表时间：
2010-04-30
影响因子：
3
通讯作者：
Gao, S. Y.
中科院分区：
文献类型：
--
作者：
Guo, H. W.;Gong, Y. X.;Gao, S. Y.
高强度多孔泡沫玻璃可广泛用作隔热、吸音、吸收冲击波的建筑材料。以废旧阴极射线管为原料，以SiC为发泡剂，采用烧结法制备了新型高强度泡沫微晶玻璃。在本研究中，通过差热分析（DTA）、X射线衍射（XRD）、扫描电子显微镜（SEM）和机械性能对样品进行了表征。通过强度试验研究了微晶增强材料对弯曲和压缩强度的影响。通过应用 XRD 和 SEM 测定样品的结晶行为。实验结果表明，通过改变SiC的用量并采用840-850℃左右的烧结温度，导致Pb、Pb(3)O(4)和Al(6)Si(2)O(13)的析出，可以获得5.61-23.73 MPa的惊人的高机械强度值。机械强度、微晶析出与SiC用量之间存在良好的相关性。 (C) 2010 Elsevier B.V. 保留所有权利。
The high strength porous foam glass can be widely used as heat insulation, sound absorption, shock wave absorbing constructional materials. The new high strength foam glass-ceramics from waste cathode ray tube were prepared by sintering method, and used SiC as foam agent. In this study, the samples were characterized by differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and mechanical property. The effect of micro-crystals reinforcement on the bending and compressive strength was investigated by the strength tests. The crystallization behavior of the samples was determined by the applying of XRD and SEM. The experimental results showed that the amazingly high mechanical strength values of 5.61-23.73 MPa can be obtained by changing the dosage of SiC and using the sintering temperature around 840-850 degrees C, leading to the precipitation of Pb, Pb(3)O(4), and Al(6)Si(2)O(13).Good correlations between mechanical strength, precipitation of micro-crystals and SiC dosage were observed. (C) 2010 Elsevier B.V. All rights reserved.