| 摘要: |
| 基于“元素循环”理念,模拟地下成岩机理,将陶瓷废弃物中的Si、Al和Ca元素,经水热固化技术转换为硅酸钙铝水合物（C A S H）和铝代托勃莫来石,用于制作室内薄板材料,并采用万能材料试验机对薄板样品进行三点法抗折强度测试,同时采用X射线衍射（XRD）仪、傅里叶变换红外光谱（FTIR）仪、扫描电子显微镜（SEM）及湿度应答测试设备等研究其晶相、官能团、微观形貌和调湿性能.结果表明：原材料配合比和水热反应条件均会影响样品的抗折强度,当陶瓷废料掺量为70%,在约200℃、12h的水热固化环境下,样品的抗折强度最高可达23MPa;水热固化过程中生成的铝代托勃莫来石可以提升样品的孔隙率,使材料在具有高强度的同时还具备调湿功能. |
| 关键词: 陶瓷废弃物 水热 抗折强度 托勃莫来石 调湿 |
| DOI：103969/j.issn.1007 9629202004021 |
| 分类号: |
| 基金项目: |
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| Application of Hydrothermal Curing Technology of Ceramic Waste in Indoor Sheet Materials |
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LAN Haoran1, JING Zhenzi1, XIAO Libiao2, HUANG Lingyan2, LIU Yijun2
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1.School of Materials Science and Engineering, Tongji University, Shanghai 201804, China;2.Mona Lisa Group Co., Ltd., Foshan 528211, China
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| Abstract: |
| Based on the concept of element circulation, the mechanism of diagenesis of underground accumulative rocks was simulated with a view to convert Si, Al and Ca elements in the ceramic wastes into calcium aluminum silicate hydrate(C A S H) gel and further to aluminum substituted tobermorite by hydrothermal synthesis, with the result that indoor sheet materials were prepared. The flexural strength of the materials were tested by three point method with universal material testing machine, and XRD, FTIR, SEM and humidity response test equipment were used to investigate the change of crystal phase and functional group, micro morphology and humidity regulating performance. The mix proportion of raw materials was measured. The hydrothermal reaction conditions affect the flexural strength of the samples. The highest flexural strength of 23MPa can be obtained when 70% ceramic waste is cured in hydrothermal environment at about 200℃ for 12h. At the same time, the generated tobermorite can enhance the porosity of the sample, so that the material has the function of humidity regulation. |
| Key words: ceramic waste hydrothermal flexural strength tobermorite humidity regulating |
