Nomex蜂窝夹层结构真空袋共固化过程蜂窝变形

复合材料学报, 2009, 26(4): 29-35.

Nomex蜂窝夹层结构真空袋共固化过程蜂窝变形

郑义珠 ^1, , 顾轶卓 ^2, , 孙志杰 ^3, , 李敏 ^4, , 张佐光 ^5,

1.北京航空航天大学材,料科学与工程学院,空天材料与服役教育部重点实验室,北京,100191

2.北京航空航天大学材,料科学与工程学院,空天材料与服役教育部重点实验室,北京,100191

3.北京航空航天大学材,料科学与工程学院,空天材料与服役教育部重点实验室,北京,100191

4.北京航空航天大学材,料科学与工程学院,空天材料与服役教育部重点实验室,北京,100191

5.北京航空航天大学材,料科学与工程学院,空天材料与服役教育部重点实验室,北京,100191

基金项目: 北京航空航天大学博士研究生创新基金

关键词：蜂窝夹层结构 , 共固化工艺 , 芯材变形 , 芯材内压

Core crush of Nomex honeycomb sandwich structure during cocuring process with vacuum bag

针对蜂窝夹层板的共固化工艺,以玻璃纤维120斜纹织物/环氧5224体系为面板,以Nomex蜂窝为夹芯材料,研究了蜂窝侧向抗压刚度的影响因素,并通过自行建立的成型过程气压测试装置,分析了芯材内压的影响因素及蜂窝的变形情况.结果表明:对于孔格边长和芯材高度较大的情况,蜂窝侧向抗压能力较小,在真空压力的作用下容易发生变形;芯材内压与芯材内气体的膨胀和预浸料铺层的渗透性直接相关,因此芯材内压受温度制度、预浸料层数和胶膜影响较大;芯材内压对抵抗蜂窝变形起到重要作用,预浸料凝胶前较大的芯材内压有利于抑制蜂窝变形的发生.

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