摘要
采用湿法手糊成型工艺,利用铺层过程中基体的流动性使金属颗粒与基体混合,并在固化后形成颗粒嵌入层间基体富集区的颗粒增韧薄层结构,成功制备了一种层间含不锈钢颗粒增韧的碳纤维/环氧复合材料层合板。通过三点弯曲试验测试,发现该材料相比无颗粒增韧层合板具有更好的抗弯性能。此外,对比分析了不同颗粒含量对材料性能的影响,分别测试了颗粒含量为0、30、45和60 g/m^(2)等4种类型的试验件。测试结果表明:当层间不包含颗粒时,其弯曲强度为399.7 MPa,而层间添加一定量的不锈钢颗粒后,其弯曲强度明显上升,且颗粒含量越高强度提升越多;在颗粒含量分别为30、45和60 g/m^(2)时,其弯曲强度分别达到了454.9、506.1和569.6 MPa,存在随颗粒密度线性增长的趋势。
A kind of carbon fiber/epoxy composite laminates with toughened stainless steel particles are successfully prepared by the wet hand pasting process,in which the metal particles are mixed with the matrix through the fluidity of the matrix during the layering process,and the particles are embedded into the toughened particle thin layer structure of the matrix rich area after curing.Through the three-point bending test,it is found that the material has a higher flexural resistance than the non-particle toughened laminates do.In addition,the effects of different particle contents on material properties are compared and analyzed.The specimens with a particle content of 0 g/m^(2),30 g/m^(2),45 g/m^(2)and 60 g/m^(2)are respectively tested.The results show that,when the interlayer particle content is 0 g/m^(2),its flexural strength is 399.7 MPa.After adding a certain amount of stainless steel particles between the layers,the flexural strength increases significantly.The higher the particle content is,the more the strength increases.At a particle content of 30 g/m^(2),45 g/m^(2)and 60 g/m^(2),the flexural strength reaches 454.9 MPa,506.1 MPa and 569.6 MPa respectively,which has a linear increase with the particle density.
作者
张耀
张航
蔡登安
胡彦鹏
张楠
ZHANG Yao;ZHANG Hang;CAI Deng’an;HU Yanpeng;ZHANG Nan(State Key Laboratory of Mechanics and Control for Aerospace Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2023年第6期293-298,共6页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金项目(52005256)
江苏省基础研究计划(自然科学基金)资助项目(BK20190394)
江苏高校优势学科建设工程资助项目(PAPD)
南京航空航天大学大学生创新创业训练计划项目(2022CX001080)。
关键词
层合板
不锈钢颗粒
层间增韧
三点弯曲
碳纤维
laminate
stainless steel particles
interlaminar toughening
three-point bending
carbon fiber
