聚酰胺6/双向经编玻璃纤维复合材料的制备及其界面改性研究  

Preparation and interfacial modification of polyamide 6/bidirectional warp⁃knitted glass fiber composites

作　　者：陈胜 梁颖超 吴方娟 方辉 范新凤 陈晖[2] 王永刚 CHEN Sheng;LIANG Yingchao;WU Fangjuan;FANG Hui;FAN Xinfeng;CHEN Hui;WANG Yonggang(College of Materials Science and Engineering,Fujian University of Technology,Fuzhou 350118;School of Machine Engineering and Automation,Fuzhou University,Fuzhou 350108;Jiangsu FRD Science&Technology Co,Ltd,Changzhou 213200)

机构地区：[1]福建工程学院材料科学与工程学院,福州350118 [2]福州大学机械工程及自动化学院,福州350108 [3]飞荣达科技(江苏)有限公司,江苏常州213200

出　　处：《中国塑料》2022年第5期24-28,共5页China Plastics

基　　金：大学生创新创业训练计划项目(202110388007);中央引导地方科技发展专项(2021L3015)。

摘　　要：采用3-氨丙基三乙氧基硅烷(KH550)和甲苯二异氰酸酯(TDI)对双向经编玻璃纤维(BWKGF)进行表面改性处理,制备KH550改性BWKGF(k-BWKGF)和TDI改性BWKGF(t-BWKGF),并采用热塑性树脂传递模塑成型(T-RTM)工艺制备了聚酰胺6(PA6)/BWKGF、PA6/k-BWKGF和PA6/t-BWKGF复合材料;通过红外光谱仪(FTIR)、场发射扫描电子显微镜(FESEM)和万能试验机对改性前后BWKGF结构、复合材料的微观形貌及力学性能进行了表征。结果表明,k-BWKGF和t-BWKGF表面接枝了活性基团;改性处理增大了BWKGF表面的粗糙度,改善了其和PA6间的界面结合效果;改性处理提升了复合材料的力学性能,PA6/t-BWKGF和PA6/k-BWKGF的拉伸强度分别达到了130 MPa和140 MPa,比PA6/BWKGF分别提高了44.5%和55.5%。The bidirectional warp-knitted glass fibers(BWKGF)were modified with 3-aminopropyltriethoxysilane and to luene diisocyanate to prepare k-BWKGF and t-BWKGF,respectively.Polyamide 6(PA6)/BWKGF,PA6/k BWKGF,and PA6/t-BWKGF composites were then prepared through a thermoplastic resin transfer molding process.The structures of modified BWKGF and the microstructure and mechanical properties of the composites were characteri zed using an infrared spectroscope,a field emission scanning electron microscope,and a universal testing machine.The results indicated that the surfaces of k-BWKGF and t-BWKGF were grafted with active groups.The surface roughness of BWKGF increased and the interfacial bonding between BWKGF and PA6 was improved after modification.In addi-tion,the mechanical properties of the composites were improved due to the surface modification of BWKGF.The tensile strength of PA6/k-BWKGF and PA6/t-BWKGF reached 130 MPa and 140 MPa,respectively,which were 44.5%and 55.5%higher than that of PA6/BWKGF,respectively.

关 键 词：玻璃纤维 聚酰胺6 阴离子聚合 复合材料 力学性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]