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Al2O3修饰液改性多孔陶瓷的制备及材料性能研究

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狄娜, 刘波, 许圆圆. Al2O3修饰液改性多孔陶瓷的制备及材料性能研究[J]. 矿产综合利用, 2024, 45(2): 16-22. doi: 10.3969/j.issn.1000-6532.2024.02.003
引用本文: 狄娜, 刘波, 许圆圆. Al2O3修饰液改性多孔陶瓷的制备及材料性能研究[J]. 矿产综合利用, 2024, 45(2): 16-22. doi: 10.3969/j.issn.1000-6532.2024.02.003
shu
DI Na, LIU Bo, XU Yuanyuan. Preparation and Properties of Fly Ash Based Porous Ceramics Modified by Al2O3[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(2): 16-22. doi: 10.3969/j.issn.1000-6532.2024.02.003
Citation: DI Na, LIU Bo, XU Yuanyuan. Preparation and Properties of Fly Ash Based Porous Ceramics Modified by Al2O3[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(2): 16-22. doi: 10.3969/j.issn.1000-6532.2024.02.003
shu

Al2O3修饰液改性多孔陶瓷的制备及材料性能研究

  • 1.

    长春科技学院，吉林　长春　130000

  • 2.

    电子科技大学成都学院，四川　巴中　611731

  • 3.

    中国科学院地理科学与资源研究所，北京　100101

  • 基金项目: 江苏省重点研发项目（212400410184）
详细信息
    作者简介: 狄娜（1990-），女，硕士，研究方向为材料工程

  • 中图分类号: TD989;TQ174.2

Preparation and Properties of Fly Ash Based Porous Ceramics Modified by Al2O3

  • 1.

    Changchun Institute of Science and Technology, Changchun 130000, Jilin, China

  • 2.

    Chengdu College, University of Electronic Science and Technology of China, Bazhong 611731, Sichuan, China

  • 3.

    Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

    摘要

  • 这是一篇陶瓷及复合材料领域的论文。为了提高粉煤灰基多孔陶瓷材料的性能，利用Al2O3修饰液对样品进行表面处理，并对其开展物理、力学性能、吸附效果和微观实验。结果表明：烧结温度越高，多孔陶瓷的气孔率与吸水率越小，强度和表观密度越大，在1100 ℃的温度条件下，多孔结构烧结成型的效果较佳；当修饰液的浓度从0增至50 mol/L，多孔陶瓷的饱和吸附率增加了4.5倍左右，同时密实度和强度也显著提高；氧化铝修饰液的表面改性效应对钙长石晶体的形成起到促进作用，使得孔陶瓷的强度与吸附性能显著提升。

    This is an article in the field of ceramics and composites. In order to improve the performance of fly ash-based porous ceramic materials, the samples were surface-treated using Al2O3 modifying liquid, and physical and mechanical properties, adsorption effects and microscopic experiments were carried out on them. The results showed that the higher the sintering temperature, the smaller the porosity and water absorption of the porous ceramics, and the greater the strength and apparent density. Optimal sintering and molding of porous structures at a temperature of 1100 °C. When the concentration of Al2O3 modifying liquid was increased from 0 to 50 mol/L, the saturated adsorption rate of the porous ceramics increased about 6 times, and at the same time, the densities and strengths were also significantly increased. The surface modification effect of the Al2O3 modifying liquid promotes the formation of the caliche feldspar crystals, which results in a significant increase in the strength and adsorption properties of the porous ceramics. strength and adsorption performance were significantly improved.

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  • 图 1  不同温度下的材料物理力学测试结果

    Figure 1. 

    下载: 全尺寸图片 幻灯片

    图 2  不同烧结温度下的断口微观形貌

    Figure 2. 

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    图 3  不同修饰液浓度下的物理力学测试结果

    Figure 3. 

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    图 4  不同浓度下的陶瓷吸附实验结果

    Figure 4. 

    下载: 全尺寸图片 幻灯片

    图 5  不同浓度条件下的多孔陶瓷微观形貌

    Figure 5. 

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    图 6  Al2O3修饰前后的多孔陶瓷的XRD

    Figure 6. 

    下载: 全尺寸图片 幻灯片

    表 1  粉煤灰化学组分 /%

    Table 1.  Chemical components of fly ash

    SiO2 Al2O3 CaO Fe2O3 MgO 其他
    56.4 8.5 21.7 3.2 3.9 6.3
    下载: 导出CSV

    表 2  多孔陶瓷的配比

    Table 2.  Proportion of porous ceramics

    名称 粉煤灰 造孔剂 黏结剂 助溶剂
    质量占比/% 55 25 8 12
    下载: 导出CSV
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收稿日期:  2022-07-03
刊出日期:  2024-04-25

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