环氧复合材料层板热压成型孔隙缺陷影响因素  

Effects of different factors on the void defect in epoxy composite laminates in hot pressing process

作　　者：汪赫男[1] 张佐光[1] 顾轶卓[1] 李敏[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100083

出　　处：《复合材料学报》2007年第5期55-60,共6页Acta Materiae Compositae Sinica

基　　金：国家863资助项目(2001AA335020);国家973资助项目(2003CB615602)

摘　　要：针对玻璃纤维/环氧复合材料,采用真空袋和热压机工艺,研究了层板中孔隙含量、形态及其分布规律,考察了成型温度、工艺压力、预浸料吸湿量、铺层方式等因素对孔隙缺陷的影响,并应用Kardos气泡模型对实验结果进行了理论分析。结果表明:孔隙缺陷的主要影响因素随工艺方法而变化,单向层板中孔隙率的分布规律有着很好的一致性;同时Kardos气泡模型可用于判断孔隙缺陷的形成状况。Glass/epoxy fiber composite laminates were prepared by the vacuum bag and the hot pressing process. The content, shape and distribution of voids were investigated. The several factors which affect the voids formation were studied, including the temperature condition, applied pressure, environmental moisture and the laminate lay- up type. The Kardos void formation model was used to analyze the experimental results. It indicates that the main factors affecting the voids formation change with different processing methods, and the distributions of voids in uni- directional composite laminates have significant coherence; the Kardos void formation model can be used to estimate the voids formation.

关 键 词：复合材料 热压工艺 孔隙 环氧树脂 

分 类 号：TB332[一般工业技术—材料科学与工程]