Effect of Carbon as Foaming Agent on Pore Structure of Foam Glass

摘要：

　　Insulation effect and mechanical performance of foam glass depend,to a large extent,on foam structure.Hence understanding foam formation is not only a problem of significant fundamental interest but also of tremendous practical impact.In this paper,foam growth was modeled comparing to grain growth theory in sintering.TG-DTG analysis of carbon black indicated that pre-oxidation took place prior to foaming temperature.Furthermore effects of heating rate and particle size of carbon black on foam structure have been taken into account.Several borosilicate foam glasses were fabricated by powder sintering process at different heating rates using carbon black of different particle sizes as foaming agent,respectively.It was found that increasing the heating rate tended to decrease the pre-oxidation of carbon black resulting in inhomogeneous foam distribution.Foam structure of sample heated at a rate of 8 ℃/min using carbon black with particle size of 0.15mm was optimal.

关键词： Borosilicate foam glass Foam structure Foam growth

作者: Dongsheng Lv Xiuhua Li Lei Wang Juanjuan Du Jie Zhang

作者单位: Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, P.R.China

会议类型: 国际会议

会议名称: The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))

会议地点: 哈尔滨

会议语种:英文

页码: 765-768

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）