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以PMMA为造孔剂的凝胶注模工艺制备多孔Al2O3陶瓷
作者:郝边磊1 2 陈仕乐2  健2 汪长安2 
单位:(1. 景德镇陶瓷大学材料科学与工程学院 江西 景德镇 333403  2. 清华大学材料学院 新型陶瓷与精细工艺国家重点实验室 北京 100084) 
关键词:多孔陶瓷 氧化铝 凝胶注模 造孔剂 
分类号:TQ174;TM285
出版年,卷(期):页码:2019,47(9):0-0
DOI:
摘要:

 以Al2O3为原料、聚甲基丙烯酸甲酯(PMMA)微球为造孔剂、异丁烯/马来酸酐共聚物(Isobam104)为胶凝剂和分散剂、一水柠檬酸(CA)作为稳定剂,采用凝胶注模与造孔剂相结合的方法制备出多孔Al2O3陶瓷。研究了分散胶凝剂、稳定剂含量对浆料流变性能的影响,以及造孔剂添加量、不同烧结温度对多孔Al2O3陶瓷气孔率和抗压强度的影响。结果表明:制备的多孔Al2O3陶瓷具有均匀的多孔结构,平均孔径为4 μm左右;当造孔剂含量从10% (质量分数)增至50%时,多孔Al2O3陶瓷的气孔率从45.53%上升至64.98%,抗压强度从31.74 MPa下降至9.83 MPa;当烧结温度从1 500 ℃升高至1 650 ℃时,多孔Al2O3陶瓷的气孔率从60.31%下降至47.81%,抗压强度从9.00 MPa上升至54.75 MPa。

 
基金项目:
国家自然科学基金(51572145,51872159)。
作者简介:
参考文献:

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