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| 引用本文: | 王智,何坚,王子仪,梁淑哲,刘振华.多孔微波吸收功能集料制备及性能研究[J].建筑材料学报,2021,24(1):106-114 |
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| 多孔微波吸收功能集料制备及性能研究 |
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王智1, 何坚1, 王子仪2, 梁淑哲1, 刘振华1
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1.重庆大学材料科学与工程学院，重庆400030;2.重庆交通大学交通运输学院，重庆400074
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| 摘要: |
| 采用页岩、有机物(米粒)、锰锌铁氧体，通过模板法烧结制备多孔微波吸收功能集料，研究了该集料以及用该集料制备的功能砂浆的微波吸收性能.结果表明：在本体系中，在1000℃下烧结30min后，即可制备出孔结构可控且抗压强度为65MPa的多孔微波吸收功能集料；孔径为245～833μm、有机物掺量为25%时，微波辐照30s的功能集料和功能砂浆微波辐照温升最高，可分别从室温升至2188、1194℃，功能砂浆融冰时间为485s；多孔结构能改善功能集料与自由空间阻抗匹配，吸收损耗更多微波，明显增强功能集料和功能砂浆的微波吸收能力，提高其微波辐照温升. |
| 关键词: 微波吸收 多孔集料 微波辐照温升 强度 |
| DOI：103969/j.issn.1007 9629202101015 |
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| 基金项目:国家自然科学基金资助项目(51461135005) |
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| Preparation and Properties of Porous Microwave Absorption Functional Aggregate |
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WANG Zhi1, HE Jian1, WANG Ziyi2, LIANG Shuzhe1, LIU Zhenhua1
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1.College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China;2.College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing 400074, China
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| Abstract: |
| The microwave absorption properties of porous microwave absorption functional aggregate and mortar prepared by template sintering were studied by using shale, organic matter(rice) and Mn Zn ferrite. The results show that in this system, the porous microwave absorption functional aggregate with controllable pore structure and compressive strength of 65MPa can be prepared after sintering at 1000℃ for 30min. When the pore diameter is 245833μm and the content of organic matter is 25%, the temperature rise of functional aggregate and functional mortar irradiated by microwave for 30s is the highest, which can rise from room temperature to 2188℃ and 1194℃ respectively, and the melting time of functional mortar is 485s. The porous structure can improve the impedance match between functional aggregate and free space, absorb more microwave, significantly enhance the microwave absorption capacity of functional aggregate and functional mortar, and increase the temperature rise of microwave irradiation. |
| Key words: microwave absorption porous aggregate temperature rise of microwave irradiation strength |
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