先进复合材料T300/5405综合环境实验谱的研究  

Synthetical Environmental Spectrum Aging of T300/5405 Advanced Composite Material

作　　者：曹东[1,2] 张晓云[2] 陆峰[2] 刘建华[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100191 [2]北京航空材料研究院,北京100095

出　　处：《材料工程》2014年第7期73-78,共6页Journal of Materials Engineering

摘　　要：运用扫描电子电镜(SEM)、动态力学分析(DMA)和红外光谱分析(IR)技术,研究了先进复合材料T300/5405在四种综合环境实验模式下的吸湿性能变化、弯曲强度和剪切强度变化趋势,探讨了复合材料T300/5405的老化机理。研究发现:先进复合材料T300/5405的吸湿性能并不随循环老化方式的不同而产生明显的变化;力学性能的变化对老化方式也并不敏感。显微结构分析表明间断性的紫外辐射对复合材料造成了明显的破坏。老化方式4对复合材料的物理性能影响显著,复合材料的玻璃化转化温度在经过老化后有所降低。Scanning electron microscope （SEM）, dynamic mechanical analysis （DMA） and infraredspectra analysis （IR） were employed to investigate the absorption properties, flexural strength andshear strength of T300/5405 advanced composite material after synthetical environmental spectrumaging. The aging mechanism of composite T300/5405 was also discussed. The results show that theabsorption properties exhibit no obvious change in different synthetical aging methods; the mechanicalproperties of the material are not relevant to synthetical aging method as well. SEM results show thatdiscontinued ultraviolet radiation causes damage to the composite. Synthetical aging mode 4 exhibitsgreatest effect on the physical properties of composites and the glass transition temperature （Tg） de-creases after aging.

关 键 词：先进复合材料 综合环境实验谱 力学性能 动态力学分析 红外分析 

分 类 号：TB332[一般工业技术—材料科学与工程]