SiC多孔陶瓷的绿色制备及性能优化

doi:10.16552/j.cnki.issn1001-1625.2024.1184

摘要/Abstract

摘要： 造孔剂法制备多孔陶瓷具有绿色环保的优势,但如何平衡显气孔率与抗压强度之间的关系,已成为制备多孔陶瓷的重要问题。针对这一问题,本研究以碳化硅(SiC)为骨料,以木炭和工业级瓜尔胶制成的颗粒为造孔剂,优化工艺,以制备环保高性能过滤陶瓷。通过设计特殊形貌造孔剂、调整浆料中造孔剂比例、优化烧结温度,可以有效平衡SiC多孔陶瓷的显气孔率与抗压强度。研究表明,当有孔道造孔剂与无孔道造孔剂颗粒数量比例为1:3、甲基纤维素质量分数为1.3%、烧结温度为1 450 ℃时,得到SiC多孔陶瓷的显气孔率为81.24%,抗压强度为1.29 MPa。

关键词: 碳化硅, 多孔陶瓷, 造孔剂法, 抗压强度, 显气孔率, 绿色环保

Abstract: The preparation of porous ceramics by pore-forming agent method has the advantage of green environmental protection, but how to balance the relationship between apparent porosity and compressive strength has become an important issue in the preparation porous ceramics. To address this issue, this study used silicon carbide (SiC) as aggregate, charcoal and industrial-grade guar gum particles as pore-forming agents, and optimized the process to prepare environmentally friendly and high-performance filter ceramics. By designing pore-forming agents with special morphology, adjusting the proportion of pore-forming agents in the slurry and optimizing sintering temperature, the apparent porosity and compressive strength of SiC porous ceramics were effectively balanced. The results show that when the number ratio of pore-forming agent particles with pore channels to those without pore channels is 1:3, the mass fraction of methylcellulose is 1.3%, and the sintering temperature is 1 450 ℃, the obtained SiC porous ceramics have an apparent porosity of 81.24% and a compressive strength of 1.29 MPa.

Key words: silicon carbide, porous ceramics, pore-forming agent method, compressive strength, apparent porosity, green environmental protection

中图分类号:

TQ174.7

王竞一, 杨一帆, 段国林. SiC多孔陶瓷的绿色制备及性能优化[J]. 硅酸盐通报, 2025, 44(5): 1869-1877.

WANG Jingyi, YANG Yifan, DUAN Guolin. Green Preparation and Performance Optimization of SiC Porous Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(5): 1869-1877.

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