3D Interconnetive Porous Silica Ceramics Prepared by Gel Casting with Egg White Protein as a Foaming Agent
Highly porous silica ceramics were produced by gel casting with egg white protein (EWP) as a foaming agent and evaluated by measuring the porosity,mechanical strength and microstructure.After drying,the green bodies were debindered and sintered at 1300 ℃ for 4 h.The influences of the EWP content on the open porosity as well as the strength were investigated.The porosity of the obtained porous silica ceramics was within 70.2%-86.1%,and the bending strength decreased from 6.81 MPa to 5.48 MPa.It was found that the strength dependence of the porosity was well described by a modified exponential relation of the form σ=σ0 exp(-BP),where P is the porosity and B is a constant (B =1.37 was obtained by fitting the experimental data).This finding is in agreement with other literature data and seems to indicate a common feature of all porous ceramics.
Direct protein foaming Egg white protein Silica Porous ceramics
Hai Xu Jiachen Liu Yingna Zhao Zhenguang Hou
School of Materials Science and Engineering of Tianjin University,Tianjin,300072,P.R.China School of Materials Science and Engineering of Tianjin University,Tianjin,300072,P.R.China;School of
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
555-558
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）