硅溶胶-酚醛树脂共结合Al2O3-SiC-C砖性能研究

doi:10.3969/j.issn.1001-1935.2024.03.008

耐火材料 ›› 2024, Vol. 58 ›› Issue (3): 218-223.DOI: 10.3969/j.issn.1001-1935.2024.03.008

硅溶胶-酚醛树脂共结合Al₂O₃-SiC-C砖性能研究

吕宝栋¹⁾, 高东升²⁾, 鞠茂奇^2,3), 杨帆³⁾

1)鞍钢集团朝阳钢铁有限公司炼铁厂辽宁朝阳 122000
2)武汉科技大学湖北武汉 430081
3)中冶武汉冶金建筑研究院有限公司湖北武汉 430081

收稿日期:2023-10-19 出版日期:2024-06-15 发布日期:2024-06-21
通讯作者: 鞠茂奇,男,1995年生,博士,工程师。 E-mail:mcc_maoqiju@126.com
作者简介:吕宝栋:男,1986年生,硕士。 E-mail:86598487@qq.com

Properties of silica sol-phenolic resin co-bonded Al₂O₃-SiC-C bricks

Lyu Baodong, Gao Dongsheng, Ju Maoqi, Yang Fan

First author's address: Ironmaking Plant,Chaoyang Iron & Steel Co.,Ltd.of Ansteel Group Corporation,Chaoyang 122000,Liaoning,China

Received:2023-10-19 Online:2024-06-15 Published:2024-06-21

摘要/Abstract

摘要： 为了缓解酚醛树脂碳化引起的Al₂O₃-SiC-C砖组织结构劣化,提升Al₂O₃-SiC-C砖的力学性能和抗渣性能,以粒度分别为5～3、3～1和≤1 mm的高铝矾土为骨料,以电熔白刚玉(≤0.045 mm)、SiC(≤0.075 mm)、α-Al₂O₃微粉和鳞片石墨(≤0.15 mm)等为基质,以热固性酚醛树脂和硅溶胶为结合剂,制备了硅溶胶-酚醛树脂共结合Al₂O₃-SiC-C砖。在酚醛树脂外加量为4.5%(w)的基础上,探究了硅溶胶的加入量(外加质量分数分别为0、0.45%、0.90%和1.35%)对Al₂O₃-SiC-C砖常温力学性能、高温力学性能和抗渣性能的影响。结果表明:引入适量硅溶胶可以有效提升Al₂O₃-SiC-C砖的力学性能及抗渣性能,当硅溶胶加入量为0.45%(w)时,试样具有优异的常温、高温力学性能及抗渣性能。

关键词: 硅溶胶, 酚醛树脂, Al₂O₃-SiC-C砖

Abstract: To mitigate the structural deterioration of Al₂O₃-SiC-C bricks induced by phenolic resin carbonization and enhance their mechanical properties and slag resistance,silica sol-phenolic resin co-bonded Al₂O₃-SiC-C bricks were prepared using bauxite (5-3,3-1 and ≤1 mm) as aggregates,white fused corundum (≤0.045 mm),SiC (≤0.075 mm),α-Al₂O₃ micropowder and flake graphite (≤0.15 mm) as the matrix,and thermosetting phenolic resin and silica sol as the binders.Based on the extra addition of 4.5 mass% phenolic resin,the effects of the silica sol extra addition (mass fractions of 0,0.45%,0.90% and 1.35%,respectively) on the cold and hot mechanical properties and slag resistance of the bricks were investigated.The results show that an appropriate addition of silica sol can effectively improve the mechanical properties and slag resistance of the Al₂O₃-SiC-C bricks,and the specimen with 0.45% silica sol performs excellent cold and hot mechanical properties and slag resistance.

Key words: silica sol, phenolic resin, Al₂O₃-SiC-C bricks

中图分类号:

TQ175

吕宝栋, 高东升, 鞠茂奇, 杨帆. 硅溶胶-酚醛树脂共结合Al₂O₃-SiC-C砖性能研究[J]. 耐火材料, 2024, 58(3): 218-223.

Lyu Baodong, Gao Dongsheng, Ju Maoqi, Yang Fan. Properties of silica sol-phenolic resin co-bonded Al₂O₃-SiC-C bricks[J]. Refractories, 2024, 58(3): 218-223.

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硅溶胶-酚醛树脂共结合Al₂O₃-SiC-C砖性能研究

Properties of silica sol-phenolic resin co-bonded Al₂O₃-SiC-C bricks

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