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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。
Aiming at the co-curing process of the honeycomb sandwich panel, the glass fiber 120 twill fabric / epoxy 5224 system is used as the panel and the honeycomb Nomex as the sandwich material to study the influence factors of the cellular lateral compressive rigidity. Through the self-established forming process Air pressure test device, analysis of the impact of the core material and honeycomb deformation factors. The results show that the lateral compressive capacity of the honeycomb is small and the deformation of the honeycomb is prone to occur under the action of vacuum pressure. The inner pressure of the core material and the expansion of the gas in the core material and the pre-impregnation Therefore, the internal pressure of the core material is affected by the temperature system, the number of prepreg layers and the film. The internal pressure of the core material plays an important role in resisting the deformation of the honeycomb. Before the prepreg gel Large core pressure is conducive to inhibiting the occurrence of cellular deformation.