水溶性高分子PVP对陶瓷凝胶注模成型坯体表面起皮的抑制作用与机理

无机材料学报, 2002, 17(3): 480-488. doi: 10.3321/j.issn:1000-324X.2002.03.016

水溶性高分子PVP对陶瓷凝胶注模成型坯体表面起皮的抑制作用与机理

马景陶 ^1, , 谢志鹏 ^2, , 苗赫濯 ^3, , 黄勇 ^4, , 程一兵 ^5,

1.清华大学材料系新型陶瓷与精细工艺国家重点实验室,北京,100084

2.清华大学材料系新型陶瓷与精细工艺国家重点实验室,北京,100084

3.清华大学材料系新型陶瓷与精细工艺国家重点实验室,北京,100084

4.清华大学材料系新型陶瓷与精细工艺国家重点实验室,北京,100084

5.Dept.of Materials Engineering, Monash University, Clayton, Victoria 3800 Australia)

基金项目: 国家重点基础研究发展计划(973计划)(G2000067204-01) 国家高技术研究发展计划(863计划)(863-715-06-0100)

关键词：氧化铝 , 凝胶注模成型 , 氧阻聚 , 聚乙烯吡咯烷酮

Inhibitive Role and Mechanism of Water-Soluble Polymer PVP on the Surface-Exfoliation Problem of Ceramic Green Bodies Prepared by Gelcasting

在凝胶注模成型的丙烯酰胺单体溶液中加入适量的聚乙烯吡咯烷酮(PvP),可有效地克服在空气气氛下单体聚合形成凝胶网络的氧阻聚问题,从而消除了坯体表面起皮现象,达到精确控制坯体尺寸的目的.本文研究了加入PVP对A12O3粉料的分散性、陶瓷浆料的静/动态流变特性、生坯的强度以及显微结构的影响;并通过红外光谱初步分析了PVP消除陶瓷坯体表面起皮现象的作用机制,即利用PVP增稠作用和PVP分子间的氢键作用在表面处起到粘结粉体的作用.

参考文献

[1]	Young A C,Omatete O O,Janney M A,et al.Journal of the American Ceramic Society,1991,74(3):612-618.
[2]	Janney M A,Omatete O O,Walls C A,et al.Journal of the American Ceramic Society,1998,81(3):581-591.
[3]	Omatete O O,Janney M A,Strehlow R A.Ceramic bulletin,1991,70(10):1641-1649.
[4]	Janney M A,Omatete O O.Method for molding ceramic powder using a water-based gelcasting process.US,Patent,4145908,1992.
[5]	Odian G G.Principles of Polymerization.3nd ed..New York:A Wiley-Interscience publication,John Wiley & Sons,Inc.,1991,262-266.
[6]	Wang H T,Liu X Q,Meng G Y.Materials Research Bulletin,1997,32(12):1705-1712.
[7]	Zhou Long-jie,Huang Yong,Xie Zhi-peng.Journal of the European Ceramic Society,2000,20(1):85-90.
[8]	Chrambach A,Odbard D R.Science,1971,172:440-451.
[9]	Landham R R,Nahass P,Leung D K,et al.Am.Ceram.Soc.Bull.,1987,66(10):1513-1516.
[10]	Ha Jung-Soo.Ceramics International,2000,26(3):251-254.
[11]	谢志鹏,黄勇,程一兵.陶瓷部件的无氧阻聚凝胶注模成型方法.中国,专利,00124982 7,2000
[12]	Pugh R J,et al.Surfactant science series,volume51:surface and colloid chemistry in advanced ceramics processing.New York:1994,195-197.
[13]	Collyer A A,Clegg D W.Rheological Measurement.London and New York:Elsevier applied science,1988,300-302.
[14]	Philip Molyneux.Water-Soluble Synthetic Polymers:Properties and Behavior(I).England:CRC Press,Inc.,1982,172-175.
[15]	Santhiya D,Subramanian S,Natarajan K A,et al.Colloids and surfaces,A:Physicochemical and engineering aspects,2000,164:143-154.
[16]	SADTLER RESEARCH LABORATORIES,INC.,Monomers & Polymers IR Grating Spectra,Volume 13-15,D4212P,D3624K,D4482P,Copyright 1973.
[17]	Khan A U,Briscoe B J,Luckham P F.Colloids and surfaces,A:Physicochemical and engineering aspects,2000,161:243-257.
[18]	Bauer W,Ritzhaupt-Kleissl H-J,Hausselt J.Ceramics international,1999,25:201- 205.

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