| 添加剂对发泡法制备镁质多孔材料性能及微观结构的影响 |
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| 引用本文： | 韩基铄,李国华,陈树江,高慧楠,袁林.添加剂对发泡法制备镁质多孔材料性能及微观结构的影响[J].人工晶体学报,2019,48(7):1350-1355. |
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| 作者姓名： | 韩基铄 李国华 陈树江 高慧楠 袁林 |
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| 作者单位： | 辽宁科技大学高温材料与镁资源工程学院,鞍山,114051;中国建材研究总院,瑞泰科技股份有限公司,北京100024 |
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| 基金项目： | 国家重点研发计划课题(2017YFB0310701) |
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| 摘 要： | 选用高纯镁砂(d50≤0.074mm)为主要原料,以TiO2、B2O3为添加剂,以油酸钾为发泡剂制备镁质多孔材料,于1580℃烧成并保温3h,采用XRD、SEM等手段对烧后试样的物相组成和显微结构进行表征。结果表明:添加TiO2和B2O3均使试样的体积密度和筒压强度随着添加剂含量的增加而增加,添加TiO2的试样增加幅度大于添加B2O3的试样。随着TiO2含量的增加,方镁石晶格常数降低,随着B2O3含量的增加,方镁石晶格常数增大;添加TiO2的试样主晶相为方镁石,有硅酸盐相和钛酸钙生成,添加B2O3的试样,只有方镁石相;随着TiO2含量的增加,试样中的气孔分布变得均匀,孔径减小,孔壁越来越厚,当TiO2添加量超过2%时,试样中的气孔数量开始减少,有部分小气孔消失,随着B2O3含量增加,气孔减少,孔径变小,生成的白色硅酸盐液相位于方镁石晶粒间。
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| 关 键 词： | 镁质多孔材料 发泡法 添加剂 孔径 |
Effect of Additives on Properties and Microstructure of Magnesia Porous Materials Prepared by Foaming |
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| HAN Ji-shuo,LI Guo-hua,CHEN Shu-jiang,GAO Hui-nan,YUAN Lin.Effect of Additives on Properties and Microstructure of Magnesia Porous Materials Prepared by Foaming[J].Journal of Synthetic Crystals,2019,48(7):1350-1355. |
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| Authors: | HAN Ji-shuo LI Guo-hua CHEN Shu-jiang GAO Hui-nan YUAN Lin |
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| Affiliation: | (College of High-temperature Materials and Magnesium Resource Engineering,University of Science and Technology Liaoning,Anshan 114051,China;Ruitai Materials Technology Co.,Ltd.,China Building Materials Academy,Beijing 100024,China) |
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| Abstract: | Selection of high purity magnesia(d 50≤0.074 mm)as main raw material,magnesia porous materials was prepared with TiO 2 and B2O3 as additives and potassium oleate as foaming agent,sintered at 1580℃and kept at heat 3 h,the phase composition and microstructure of sintered samples were characterized by XRD and SEM methods.The results shows that adding both TiO2 and B2O3 increases the bulk density and numerical tube pressure of samples as the additive content increases,the sample with TiO2 added has a larger increase than the sample with B2O3 added.With the increase of TiO2 content,the lattice constant of periclase decreases,and the lattice constant of periclase increases with the increase of B2O3 content;the main crystal phase of the sample added with TiO2 is periclase,with silicate phase and calcium titanate formation,add B2O3 samples,only periclase phase;as the TiO2 content increases,the pore distribution in the sample becomes uniform,the pore size decreases,and the pore walls become thicker.When the amount of TiO 2 added exceeds 2%,the number of pores in the sample begins to decrease,and some small pores disappear,as the B2O3 content increases,the pores decrease,the pore diameter becomes smaller,and the resulting white silicate liquid phase is located in the periclase grains. |
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| Keywords: | magnesia porous material foaming method additive aperture |
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