三维编织玻璃纤维/环氧树脂复合材料薄壁管轴向压缩性能的温度效应  

Temperature effect on axial compressive properties of three-dimensional glass fiber/epoxy resin braided composite thin-walled tubes

作　　者：李紫伦 杨安坤 覃小红[1] 武鲜艳 易洪雷[2] LI Zilun;YANG Ankun;QIN Xiaohong;WU Xianyan;YI Honglei(College of Textiles,Donghua University,Shanghai 201620,China;College of Material and Textile Engineering,Jiaxing University,Jiaxing 314001,China;School of Mechanical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]东华大学纺织学院,上海201620 [2]嘉兴学院材料与纺织工程学院,嘉兴314001 [3]浙江大学机械工程学院,杭州310027

出　　处：《复合材料学报》2023年第10期5588-5600,共13页Acta Materiae Compositae Sinica

基　　金：中国博士后科学基金(2022 M712731);国家自然科学基金(51805210);嘉兴市公益性研究计划项目(2022 AY10022);国家级大学生创新创业训练计划项目(202210354022)。

摘　　要：通过三维编织成型技术与树脂传递模塑工艺(RTM)制备了15°、25°、35°3种编织角三维编织玻璃纤维/环氧树脂复合材料薄壁管,分别在低温(-100℃、-50℃)、室温(20℃)和高温(80℃、110℃、140℃、170℃)环境下对三维编织复合材料薄壁管进行轴向准静态压缩性能测试,基于X射线微计算机显微断层扫描技术(显微CT)研究了温度和编织角对三维编织玻璃纤维/环氧树脂复合材料薄壁管轴向压缩性能和损伤形态的影响。结果表明:三维编织玻璃纤维/环氧树脂复合材料薄壁管准静态压缩性能具有显著的温度效应。温度越高,增强体与基体的结合越弱,编织复合材料薄壁管的压缩强度、压缩模量与比吸收能越低。随着温度的升高,编织复合材料薄壁管的破坏模式发生从局部剪切失效到纤维束-基体界面大面积脱粘的改变。编织角对三维编织复合材料薄壁管的压缩强度、压缩模量及比能量吸收均有不同程度影响,小编织角编织复合材料薄壁管沿编织纱线方向的取向更高,能承受更大的轴向载荷,因此抗压缩性能更好。Three-dimensional(3D)braided glass fiber/epoxy resin composite thin-walled tubes with three braiding angles of 15°,25°,and 35°were prepared by 3D braiding molding technology and resin transfer molding process(RTM).The quasi-static compression performance test of 3D braided composite thin-walled tubes was carried out at low temperature(−100℃,−50℃),normal temperature(20℃)and high temperature field(80℃,110℃,140℃ and 170℃).The effects of temperature and braiding angle on compression properties and compression failure pattern of 3D braided composite thin-walled tubes were studied based on X-ray micro-computer tomography(Micro-CT).The results show that the quasi-static compression behavior of 3D braided composite thinwalled tubes has a significant temperature effect.As the temperature increases,the failure mode of the braided composite thin-walled tubes changes from local shear failure to large-area debonding of the fiber tows-matrix interface.The braiding angle has different effects on the compressive strength,compressive modulus and specific energy absorption of 3D braided composite thin-walled tubes.The braided composite thin-walled tubes with small braiding angle have a higher orientation along the braided yarn direction which can withstand greater axial compounding,so the compression performance is better.

关 键 词：三维编织复合材料薄壁管 编织角 准静态压缩性能 温度效应 破坏模式 X射线显微CT 

分 类 号：TB332[一般工业技术—材料科学与工程]