陶瓷添加剂ISOBAM对氧化铝浆料流变性能的影响

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (4): 1338-1343.

陶瓷添加剂ISOBAM对氧化铝浆料流变性能的影响

林小清¹, 王浩键¹, 梁若繁¹, 宋小姣¹, 吴敏¹, 关康¹, 彭诚¹, 杜杨²

1.华南理工大学材料科学与工程学院,广州 510640;
2.上海劲途新材料科技有限公司,上海 201100

收稿日期:2020-10-27 修回日期:2020-12-08 出版日期:2021-04-15 发布日期:2021-05-11
通讯作者: 彭诚,博士,副教授。E-mail:mscpeng@scut.edu.cn
作者简介:林小清(1996—),女,硕士研究生。主要从事高性能陶瓷材料的研究。E-mail:2442164732@qq.com
基金资助:
国家自然科学基金(51702100);广东扬帆计划引进创新创业团队项目(2017YT05C019)

Effect of ISOBAM on Rheological Behavior of Alumina Slurries

LIN Xiaoqing¹, WANG Haojian¹, LIANG Ruofan¹, SONG Xiaojiao¹, WU Min¹, GUAN Kang¹, PENG Cheng¹, DU Yang²

1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;
2. Shanghai Kingstour Technology Co. Ltd., Shanghai 201100, China

Received:2020-10-27 Revised:2020-12-08 Online:2021-04-15 Published:2021-05-11

摘要/Abstract

摘要： ISOBAM(异丁烯-马来酸酐共聚物)是一种新型的陶瓷添加剂,主要用作凝胶注模成型中浆料的分散剂和凝胶剂。以α-Al₂O₃为对象,分别研究了pH值、ISOBAM添加量和球磨时间对Al₂O₃浆料流变性质的影响及Al₂O₃浆料的凝胶机理。结果表明,ISOBAM对氧化铝浆料有明显的分散作用,其主要分散机理是ISOBAM通过羧基的氢键作用吸附在氧化铝颗粒表面,增加了颗粒表面负电荷密度,提高了颗粒Zeta电位绝对值。其中,添加0.2%质量分数的ISOBAM的浆料可以快速凝胶化,原因是浆料的pH值接近等电点,ISOBAM分子和氧化铝能够通过氢键作用而形成凝胶网络。

关键词: ISOBAM, 氧化铝浆料, 流变性, 分散剂, 凝胶剂, 凝胶机理

Abstract: ISOBAM is a novel ceramic additive and mainly used for gel-casting processing as dispersant and gelling agent. The effect of pH value, addition of ISOBAM and milling time on the rheological behavior of alumina slurries was investigated. The gelling mechanism of ISOBAM was also studied. The results show that ISOBAM has an apparent dispersing effect on alumina slurries, due to the interaction via hydrogen bonding between carboxyl group and alumina surface and the improvement of Zeta potential. The alumina slurry with 0.2% (mass fraction) ISOBAM gelatinizes rapidly, since its pH value is close to the isoelectric point. Elastic network forms between ISOBAM molecules and alumina particles via hydrogen bonds.

Key words: ISOBAM, alumina slurry, rheological behavior, dispersant, gelling agent, gelation mechanism

中图分类号:

TQ174

林小清, 王浩键, 梁若繁, 宋小姣, 吴敏, 关康, 彭诚, 杜杨. 陶瓷添加剂ISOBAM对氧化铝浆料流变性能的影响[J]. 硅酸盐通报, 2021, 40(4): 1338-1343.

LIN Xiaoqing, WANG Haojian, LIANG Ruofan, SONG Xiaojiao, WU Min, GUAN Kang, PENG Cheng, DU Yang. Effect of ISOBAM on Rheological Behavior of Alumina Slurries[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(4): 1338-1343.

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