基于流变优化的氧化铝轻质隔热耐火材料3D打印制备

doi:10.3969/j.issn.1001-1935.2026.02.012

耐火材料 ›› 2026, Vol. 60 ›› Issue (2): 151-155.DOI: 10.3969/j.issn.1001-1935.2026.02.012

基于流变优化的氧化铝轻质隔热耐火材料3D打印制备

张淳, 吴滨

安徽工业大学冶金工程学院安徽马鞍山 243000

收稿日期:2025-05-15 出版日期:2026-04-15 发布日期:2026-04-15
作者简介:张淳:女,2005年生,本科。E-mail:2677532204@qq.com

3D printing preparation of lightweight thermal insulation alumina refractories based on rheological optimization

Zhang Chun, Wu Bin

First author’s address:School of Metallurgical Engineering,Anhui University of Technology,Ma’anshan 243000,Anhui,China

Received:2025-05-15 Online:2026-04-15 Published:2026-04-15

摘要/Abstract

摘要： 为了协同优化氧化铝基轻质隔热耐火材料的综合性能并实现3D打印,以活性氧化铝为原料,聚羧酸酯FS20为分散剂,通过调整固含量(固相质量分数分别为50%、55%、60%和65%)、黏结剂羧甲基纤维素钠CMC(外加质量分数分别为0.2%、0.4%、0.6%和0.8%)、增塑剂膨润土(外加质量分数分别为1%、2%、3%、4%和5%)和造孔剂改性稻壳(外加质量分数分别为5%、10%、15%和20%)的配比,优化浆料流变性能,并利用直写成型3D打印技术制备氧化铝轻质隔热耐火材料。结果表明:当浆料固含量为60%(w),聚羧酸酯FS20外加量为0.2%(w),CMC外加量为0.8%(w),膨润土外加量为4%(w),改性稻壳外加量为15%(w)时,浆料具有最佳流变性;3D打印成功制备体积密度为2.16 g·cm^-3,显气孔率为33.4%,常温抗折强度为46.2 MPa,常温热导率为 0.470 W·(m·K)^-1的轻质隔热耐火材料。

关键词: 流变性能, 3D打印, 改性稻壳, 轻质隔热耐火材料, 力学性能

Abstract: To synergistically optimize the comprehensive performance of lightweight thermal insulation alumina refractories and enable their 3D printing,with activated alumina as the raw material and polycarboxylate FS20 as the dispersant,the rheological properties of the slurry were optimized by adjusting the solid loadings (50%,55%,60%,and 65%,by mass),as well as the extra additions (by mass) of binder sodium carboxymethylcellulose (CMC,0.2%,0.4%,0.6%,and 0.8%),plasticizer bentonite (1%,2%,3%,4%,and 5%),and pore-forming agent modified rice husk (5%,10%,15%,and 20%).Lightweight thermal insulation alumina refractories were prepared via direct ink writing 3D printing.The results show that the slurry with 60% solid loading has the best rheological properties,with the additions of 0.2% polycarboxylate FS20,0.8% CMC,4% bentonite,and 15% modified rice husk.The lightweight thermal insulation refractory material was successfully prepared by 3D printing,with a bulk density of 2.16 g·cm^-3,an apparent porosity of 33.4%,a cold modulus of rupture of 46.2 MPa,and a thermal conductivity of 0.47 W·(m·K)^-1.

Key words: rheological properties, 3D printing, modified rice husk, lightweight thermal insulation refractories, mechanical properties

中图分类号:

TQ175

张淳, 吴滨. 基于流变优化的氧化铝轻质隔热耐火材料3D打印制备[J]. 耐火材料, 2026, 60(2): 151-155.

Zhang Chun, Wu Bin. 3D printing preparation of lightweight thermal insulation alumina refractories based on rheological optimization[J]. Refractories, 2026, 60(2): 151-155.

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基于流变优化的氧化铝轻质隔热耐火材料3D打印制备

3D printing preparation of lightweight thermal insulation alumina refractories based on rheological optimization

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