DMAA凝胶体系凝胶注模成型超细ZrO2陶瓷

doi:10.3724/SP.J.1077.2011.01105

无机材料学报 ›› 2011, Vol. 26 ›› Issue (10): 1105-1110.DOI: 10.3724/SP.J.1077.2011.01105 CSTR: 32189.14.SP.J.1077.2011.01105

DMAA凝胶体系凝胶注模成型超细ZrO₂陶瓷

许海仙, 丘泰, 杨建, 郭坚

(南京工业大学材料科学与工程学院, 南京 210009)

收稿日期:2010-11-27 修回日期:2011-01-07 出版日期:2011-10-20 网络出版日期:2011-09-20
作者简介:许海仙(1986-), 男, 硕士研究生, E-mail: wsxuhaixian@126.com
基金资助:
江苏省高技术研究计划项目(BG2002025)

Gel-casting of Fine Zirconia Using DMAA Gel System

XU Hai-Xian, QIU Tai, YANG Jian, GUO Jian

(Nanjing University of Technology, College of Materials Science and Engineering, Nanjing, 210009)

Received:2010-11-27 Revised:2011-01-07 Published:2011-10-20 Online:2011-09-20
Supported by:
High-tech R&D Program of Jiangsu Province (BG2002025)

摘要/Abstract

摘要： 为了降低传统丙烯酰胺(AM)/ N,N-亚甲基双丙烯酰胺(MBAM)凝胶体系的毒性, 制备高固相量、低粘度的超细ZrO₂(D₅₀=0.19um)浆料及高性能的生坯和陶瓷, 研究了低毒的N, N-二甲基丙烯酰胺(DMAA) /MBAM凝胶固化工艺及pH值和聚甲基丙烯酸铵(NH4PMAA)分散剂对浆料流变性的影响. 最终采用低粘度、高固相量、低毒性的浆料制备了性能优异的生坯和陶瓷. 浆料的固相量高达56vol%, 生坯表面光洁、不起皮、不开裂, 强度接近30MPa, 其内部颗粒结合紧密, 孔径呈单峰分布, ZrO₂陶瓷的抗弯强度及断裂韧性分别为960MPa和17.3MPa^.m^1/2, 其结构均匀、致密性好、四方相ZrO₂含量高.

关键词: 凝胶注模成型, ZrO₂, DMAA, 低毒单体

Abstract: In order to reduce the toxicity of gelcasting with traditional AM/MBAM Gel system and Prepare high properties green bodies and ceramics. Gelation process of low-toxic DMAA /MBAM system as well as the effect of pH and NH4PMAA on rheological behaviors of slurries were studied. The perfect green bodies and ceramics were prepared using high solid loading slurries with low viscosity and low-toxicity. The solid loading of slurries can be up to 56vol%. The green bodies are surface-smooth without cracking or exfoliation and their bending strength can reach 30MPa. The pore size distribution of the green bodies is single peaked. The mean bending strength of sintered ceramics is 960MPa and the fracture toughness can reach 17.3MPa^.m^1/2. The zirconia ceramics have good homogeneity and well dense structure, consisting of more tetragonal ZrO₂ phase.

Key words: Gel-casting, ZrO₂, DMAA, low-toxicity monomer

中图分类号:

TB34
TK01

许海仙, 丘泰, 杨建, 郭坚. DMAA凝胶体系凝胶注模成型超细ZrO₂陶瓷[J]. 无机材料学报, 2011, 26(10): 1105-1110.

XU Hai-Xian, QIU Tai, YANG Jian, GUO Jian. Gel-casting of Fine Zirconia Using DMAA Gel System[J]. Journal of Inorganic Materials, 2011, 26(10): 1105-1110.

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DMAA凝胶体系凝胶注模成型超细ZrO₂陶瓷

Gel-casting of Fine Zirconia Using DMAA Gel System

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