共注射RTM成型一体化复合材料的热传导分析  

Heat Transfer Analysis of Integral Composites Fabricated by Co-injection RTM

作　　者：尹昌平[1] 肖加余[1] 曾竟成[1] 江大志[1] 刘钧[1] 代晓青[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《材料工程》2009年第8期43-48,共6页Journal of Materials Engineering

摘　　要：依据已制备的碳环氧/泡沫/碳酚醛一体化复合材料结构,通过合理简化,建立了一体化复合材料结构热传导有限元模型。计算了指定热载荷条件下一体化复合材料结构内部温度分布,讨论了防热层厚度、隔热层厚度、隔热层热导率对一体化复合材料温度分布的影响。选用气凝胶复合材料为夹芯材料,计算得到了满足指定热载荷条件的隔热层的最小厚度,为以气凝胶复合材料为夹芯材料一体化复合材料热设计提供了依据。On the basis of the structure of loading-bearing/heat-insulated/thermal protective integration material, which loading-bearing layer material was carbon fiber reinforced epoxy resin, heat-insulated layer material was foam, and thermal-protective layer material was carbon fiber reinforced phe nolic resin, the finite element analysis （FEA） model was built to analyze the heat transfer of the integral composite materials. The temperature distribution inside the integral material was calculated by using the model, and the effects of thickness of thermal protective layer, thickness and thermal conductivity of heat-insulated layer on temperature field were discussed. Silica aerogel composite was consumed to substituted the foam to fabricated the heat-insulated layer, the thickness satisfied the defined thermal environment condition was calculated, the results were important for heat transfer design of the integral material using silica aerogel composite as heat-insulated layer.

关 键 词：承载 隔热 防热 共注射RTM 一体化 

分 类 号：TB332[一般工业技术—材料科学与工程]