摘要
以玻纤增强环氧预浸料、阻燃环氧结构胶膜和高密度Nomex蜂窝芯通过共固化工艺制备了夹层结构复合材料板,并对其进行了相关性能研究。通过分析预浸料蒙皮和胶膜中环氧树脂基体流变特性,以及研究共固化过程中的固化压力和升温制度对所制备夹层板力学性能的影响关系,制定出了适宜的复合材料成型工艺制度。结合上述研究成果,进一步对采用不同面重胶膜和铺层结构制备出的夹层板进行了性能测试,考核结果表明:胶膜用量的增加可以明显提高Nomex蜂窝夹层板的滚筒剥离强度和长梁弯曲性能,而对平面压缩性能影响较小,但会明显降低复合材料的整体阻燃和烟毒性能;此外,对称铺层结构的材料整体结构稳定性明显优于非对称铺层结构。
Glass fiber reinforced epoxy prepreg,flame retardant adhesive film and high density Nomex honeycomb core were used to manufacture sandwich composites by co-curing process in autoclave. The rheological properties of epoxy resins from prepreg face and adhesive film,the influences of applied pressure and heating during cocuring process on the mechanical properties of as-prepared sandwich panels,were investigated to determine a moderate processing profile. Combined with the above results,the properties of sandwich panels manufactured by using different areal density adhesive films and ply structures were further measured. It is found that by increasing the areal density of adhesive film,climbing drum peel strength and long beam bending properties both improve obviously and there is no significant effect on flatwise compressive strength. However,the flame retardant properties,smoke density and toxic gas release properties all decrease. The experiment results also show that the Nomex honeycomb cored sandwich panels with symmetric ply structure have more mechanical stability than unsymmetric ply structures.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2015年第10期42-47,共6页
Fiber Reinforced Plastics/Composites
关键词
Nomex蜂窝夹层
流变
共固化
预浸料
胶膜
铺层结构
nomex honeycomb cored sandwich
rheology
co-curing
prepreg
adhesive film
ply structure
