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材料工程  2017, Vol. 45 Issue (12): 106-111    DOI: 10.11868/j.issn.1001-4381.2015.000246
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
含有机胶凝剂的Al2O3-SiO2系泡沫料浆的流变性能与固化特性
王鑫, 赵雷, 杜星, 方伟, 何漩, 叶林峰
武汉科技大学 省部共建耐火材料与冶金国家重点实验室, 武汉 430081
Rheological Properties and Curing Characteristics of Al2O3-SiO2 Foam Slurries Containing Organic Gelling Agent
WANG Xin, ZHAO Lei, DU Xing, FANG Wei, HE Xuan, YE Lin-feng
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
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摘要 采用泡沫法结合凝胶注模工艺制备莫来石多孔轻质材料,通过在Al2O3-SiO2系泡沫料浆中分别引入三醋酸甘油酯、聚酰亚胺、羟丙基纤维素作为胶凝剂,研究胶凝剂的种类对泡沫料浆流变性能的影响及其与固化时间的关系规律。结果表明:3种胶凝剂对泡沫料浆的流变性能影响程度不同。流变性能直接影响泡沫料浆的固化时间,提高泡沫料浆的触变性、黏度增长速率以及扩大线性黏弹性区间是缩短泡沫料浆固化时间的有效途径。3种胶凝剂中,三醋酸甘油酯固化效果最佳,以其作为胶凝剂的泡沫料浆初凝时间和固化时间均最短。
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王鑫
赵雷
杜星
方伟
何漩
叶林峰
关键词 泡沫料浆胶凝剂流变性固化时间    
Abstract:The direct foaming method combined with gelcasting was employed to prepare mullite ceramic foam. Triacetin, polyimide and hydroxypropyl cellulose were creatively proposed as gelling agent for gelcasting process, respectively. The influence of gelling agent on rheological properties and the correlation rule with the curing time were studied. The results show that different kinds of gelling agent have different influence on rheological properties. It is considered that the rheological properties have significant influence on the curing time. Ameliorating the thixotropy, improving the rate of viscosity growth, and enlarging the linear viscoelastic domain of foam slurry are conducive to shorten the curing time of foam slurry. Among these three gelling agents, the triacetin obtains the optimal effects, the initial curing time and curing time of foam slurry is both shortest.
Key wordsfoam slurry    gelling agent    rheological property    curing time
收稿日期: 2015-03-05      出版日期: 2017-12-19
中图分类号:  TQ175.1+3  
通讯作者: 赵雷(1969-),男,博士,教授,主要从事超稳定泡沫、多孔轻质材料及有机/无机复合(杂化)功能薄膜材料的研究工作,联系地址:湖北省武汉市青山区武汉科技大学材料与冶金学院(430081),E-mail:wustzhao@163.com     E-mail: wustzhao@163.com
引用本文:   
王鑫, 赵雷, 杜星, 方伟, 何漩, 叶林峰. 含有机胶凝剂的Al2O3-SiO2系泡沫料浆的流变性能与固化特性[J]. 材料工程, 2017, 45(12): 106-111.
WANG Xin, ZHAO Lei, DU Xing, FANG Wei, HE Xuan, YE Lin-feng. Rheological Properties and Curing Characteristics of Al2O3-SiO2 Foam Slurries Containing Organic Gelling Agent. Journal of Materials Engineering, 2017, 45(12): 106-111.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.000246      或      http://jme.biam.ac.cn/CN/Y2017/V45/I12/106
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