文档介绍：第 27 卷第 12 期无机材料学报 Vol. 27 No. 12
2012 年 12 月 Journal of anic Materials Dec., 2012

文章编号: 1000-324X(2012)12-1331-05 DOI: .
蛋白发泡法制备泡沫陶瓷固化工艺研究
殷刘彦, 周新贵, 余金山, 赵爽, 罗征, 杨备
(国防科学技术大学新型陶瓷纤维及其复合材料重点实验室, 长沙 410073)
摘要: 选用蛋清蛋白作为发泡剂, 采用蛋白发泡法制备了高孔隙率的泡沫氮化硅陶瓷. 设计了三种不同固化工艺:
常压固化、恒压固化和高压固化, 固化气压依次升高, 研究了固化气压对泡沫陶瓷开孔率、孔隙形貌和孔径分布的
影响. 其中, 恒压固化制品的平均孔径和开孔率最高, 分别为 210 μm 和 %, 且孔径分布比较均匀, 常压固化次
之, 高压固化制品开孔率和平均孔径最低. 常压和恒压固化制品为椭球形孔洞, 有一定的排列取向, 而高压固化制
品多为规则的球形孔. 随着固化气压的升高, 制品孔壁厚度增加, 高压固化制品的孔壁厚度最高, 其压缩强度接近
50 MPa.
关键词: 蛋白发泡; 泡沫陶瓷; 氮化硅; 固化工艺
中图分类号: TB332 文献标识码: A
Study on the Consolidation Process of Protein Foaming in the Preparation of
Ceramic Foams
YIN Liu-Yan, ZHOU Xin-Gui, YU Jin-Shan, ZHAO Shuang, LUO Zheng, YANG Bei
(National Key Laboratory of Science and Technology on Advanced Ceramic Fibers posites, National University of
Defense Technology, Changsha 410073, China)
Abstract: High porosity Si3N4 ceramic foams were fabricated by protein foaming method using egg white protein
as foam agents. Atmosphere-, constant- and high-pressure consolidation processes were tested to prepare ceramic
foams. The effects of air pressure on cellular structure, open porosity and pore size distribution of the as-prepared
ceramic foams were investigated. The results showed that ceramic foams with average pore size and porosity of