无机材料学报

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炭纤维预制体的微波加热性能及其加热机理探讨

邹继兆1, 曾燮榕2,3, 熊信柏2,3, 黎晓华2,3, 唐汉玲1, 李龙1   

  1. 1. 西北工业大学材料学院, 西安 710072; 2. 深圳大学材料学院, 深圳 518060; 3. 深圳市特种功能材料重点实验室, 深圳 518060
  • 收稿日期:2006-10-31 修回日期:2006-12-05 出版日期:2007-11-20 网络出版日期:2007-11-20

Microwave Heating Effect and Mechanism for Carbon Fiber Preforms

ZOU Ji-Zhao 1, ZENG Xie-Rong 2,3, XIONG Xin-Bo 2,3, LI Xiao-Hua 2,3,TANG Han-Ling 1, LI Long 1

  

  1. 1. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China; 2. College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; 3. Shenzhen Key Laboratory of Special Functional Materials, Shenzhen 518060, China
  • Received:2006-10-31 Revised:2006-12-05 Published:2007-11-20 Online:2007-11-20

摘要: 通过研究微波功率、炭纤维预制体的密度和叠层层数对预制体微波加热效果的影响, 分析了微波电场在预制体中的分布特点, 提出了炭纤维预制体的微波加热模型, 并对其损耗机制进行了探讨. 结果表明: 在(2450±50)MHz的微波波段, 炭纤维预制体能吸收微波而加热, 其损耗机制主要为偶极子极化、界面极化及电导损耗.

关键词: 炭纤维, 微波加热, 温度梯度, 预制体

Abstract: Carbon fiber felts with different surface characteristics, stacking numbers, bulk densitywere heated by microwave irradiation to study the influence of these physical properties on microwave heating effect, analyzing the electric field distributions in the microwave oven. It indicates that carbon fiber preforms can be heated by microwave in (2450±50)MHz frequency. Furthermore, models of microwave heating were developed, and mechanisms of microwave energy loss were discussed. It is deduced that there are three kinds of heating mechanisms, which are doublet polarization, interface polarization and electrical conduction dissipation, respectively.

Key words: carbon fiber, microwave heating, temperature gradient, preform

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