MXene在芳纶表面的构筑及纤维性能研究  

Construction of MXene on aramid fiber surface and fiber properties

作　　者：文欣欣 张晶威 唐凯 雒瑞银 李京津 于杰 滕翠青[1] WEN Xinxin;ZHANG Jingwei;TANG Kai;LUO Ruiyin;LI Jingjin;YU Jie;TENG Cuiqing(State Key Laboratory of Advanced Fiber Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620;Ningxia Taihe Aramid Fiber Co.,Ltd.,Ningxia 750411;Taihe New Materials Group Co.,Ltd.,Yantai 264001)

机构地区：[1]东华大学材料科学与工程学院先进纤维材料国家重点实验室,上海201620 [2]宁夏泰和芳纶纤维有限责任公司,宁夏回族自治区银川750411 [3]泰和新材集团股份有限公司,山东烟台264001

出　　处：《合成纤维工业》2025年第2期1-6,17,共7页China Synthetic Fiber Industry

基　　金：国家重点研发计划资助项目(2021YFB3700102)。

摘　　要：从无损改性的角度出发,采用表面涂层改性的方法,在芳纶(AF)表面涂覆聚L-3,4-二羟基苯丙氨酸(PDOPA),利用PDOPA的“二次反应”在AF表面构筑二维片状碳化钛纳米片(MXene)制得表面构筑MXene的AF(AF-MXene),研究了AF-MXene的力学性能、表面性能及AF-MXene/环氧树脂复合材料的界面黏结性能。结果表明:MXene表面含有大量羟基,可以均匀地沉积在AF表面,在纤维表面形成褶皱,显著增强纤维表面粗糙度和表面活性;在AF表面构筑MXene纳米片后,AF的拉伸强度没有下降,基本实现无损改性,且经168 h紫外辐照后,拉伸强度保持率仍高达98.0%;在机械锁合和化学接枝的协同作用下,AF-MXene/环氧树脂复合材料的界面剪切强度较AF/环氧树脂复合材料提高了43.8%。In view of non-destructive modification,a surface coating modification method was adopted to coat poly-L-3,4-dihydroxy-phenylalanine(PDOPA)on the surface of aramid fiber(AF).Utilizing the"secondary reaction"of PDOPA,fibers named AF-MXene were prepared by constructing two-dimensional titanium carbide nanosheets(MXene)on the surface of AF.The mechanical properties and surface properties of AF-MXene,and the interfacial bonding characteristics of AF-MXene/epoxy resin composites were studied.The results showed that MXene contained a large number of hydroxyl groups on the surface,which could uniformly cover the surface of AF and significantly enhance the fiber surface roughness and activity due to the wrinkles formation on the fiber surface;the tensile strength of AF did not decrease after constructing MXene nanosheets on the surface of AF,basically achieving non-destructive modification;the tensile strength retention rate was still as high as 98.0%after ultraviolet irradiation for 168 h;under the synergistic effect of mechanical interlocking and chemical grafting,the interfacial shear strength of AF-MXene/epoxy resin composites was increased by 43.8%compared with that of AF/epoxy resin composites.

关 键 词：芳纶 碳化钛纳米片 表面构筑 界面黏结 无损改性 力学性能 

分 类 号：TQ342.73[化学工程—化纤工业]