摘要
采用热压罐成型工艺,分别制备环氧树脂(EP)含量为38%、铺层参数为[0°/+45°/–45°/90°]5的EP/GF层合板1,EP含量为33%、铺层参数为[0°/+45°/–45°/90°]5的EP/GF层合板2和EP含量为33%、铺层参数为[0°/90°/0°/+45°/–45°/90°/0°/+45°/–45°/90°]1s的层合板3。研究了EP含量、铺层参数对EP/GF层合板力学性能的影响,并在室温干态、–50℃低温干态、80℃高温干态和高温湿态四种环境试验条件下对层合板的力学性能进行了测试。结果表明,在相同铺层参数条件下,相比层合板1,低EP含量的层合板2的拉伸强度、面内压缩强度和层间剪切强度分别提高7.9%,11.2%和12.6%;增加0°,90°方向GF铺层,有利于提升层合板的拉伸强度和面内压缩强度;复合材料层合板的力学性能受温度、湿度影响较大,在高温湿态条件下,层合板3的拉伸强度和面内压缩强度和层间剪切强度分别下降46%,33.8%和36.1%。
Using the autoclave molding process,the epoxy resin(EP)/glass fibre(GF)laminates 1 with EP content of 38%and ply parameters of[0°/+45°/–45°/90°]5,EP/GF laminates 2 with EP content of 33%and ply parameters of[0°/+45°/–45°/90°]5,EP/GF laminates 3 with EP content of 33%and lay parameters of[0°/90°/0°/+45°/–45°/90°/0°/+45°/–45°/90°]1s were prepared.The effects of EP content and ply parameters on the mechanical properties of EP/GF laminates were studied.Besides,the mechanical properties of laminates were tested under four experimental environmental conditions:room temperature dry state,–50℃cold temperature dry state,80℃elevated temperature dry state,elevated temperature wet state.The results show that under the same ply parameter conditions,compared with laminate 1,the tensile strength,in-plane compressive strength and interlaminar shear strength of laminate 2 with low EP content increases by 7.9%,11.2% and 12.6%respectively.Increasing the GF layer in the direction of 0°and 90°is conducive to improving the tensile strength and in-plane compressive strength of the laminate.The mechanical properties of the composite laminate are greatly affected by temperature and humidity.Under elevated temperature wet state conditions,the tensile strength,in-plane compressive strength and interlaminar shear strength of the laminate 3 decrease by 46%,33.8% and 36.1% respectively.
作者
高琦
赵文忠
张晨晖
李建伟
Gao Qi;Zhao Wenzhong;Zhang Chenhui;Li Jianwei(No.20 Research Institute of CETC,Xi’an 710068,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2021年第7期65-70,共6页
Engineering Plastics Application
关键词
环氧树脂含量
铺层参数
玻璃纤维
湿热条件
力学性能
epoxy resin content
ply parameter
glass fiber
hygrothermal condition
mechanical property
