氢氧化钠处理对GF VER复合材料界面及力学性能的影响  

Effect of sodium hydroxide treatment on the interface and mechanical properties of GF VER composites

作　　者：明琳 冯旭煌 邵灵达 丁昊 孙泽宇 马雷雷[1,2] 田伟[1,2] 祝成炎[1,2] MING Lin;FENG Xuhuang;SHAO Lingda;DING Hao;SUN Zeyu;MA Leilei;TIAN Wei;ZHU Chengyan(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Sci-Tech University Huzhou Research Institute Co.,Ltd.,Huzhou 313000,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),杭州310018 [2]浙江理工大学湖州研究院有限公司,浙江湖州313000

出　　处：《现代纺织技术》2023年第6期100-109,共10页Advanced Textile Technology

基　　金：浙江理工大学湖州研究院项目(2023)。

摘　　要：为改善玻璃纤维(Glass fiber,GF)与乙烯基酯树脂(Epoxy vinyl ester resin,VER)间界面性能,使用氢氧化钠溶液对GF进行表面改性处理。借助扫描电镜、红外光谱仪、万能材料试验机、摆锤冲击试验机等,分析改性前后GF的表面形态与化学结构的变化。测试改性前后GF VER复合材料的单丝和纤维束界面剪切强度、弯曲强度、抗冲击强度。研究氢氧化钠处理对GF VER复合材料的界面性能和力学性能的影响。结果表明:经过氢氧化钠溶液处理后,GF浸润性得到改善,表面变得粗糙,表面活性基团增多。单丝和纤维束的界面剪切强度相比改性前分别提升了25.31%、27.48%。GF VER复合材料的弯曲强度与抗冲击强度相比改性前分别提升了20.96%、25.40%。Fiber-reinforced composites have many advantages,such as good mechanical properties,corrosion resistance,high-temperature resistance,and high moldability.It is the fastest-developing and most widely used class of composite material.The technology of fiber-reinforced composites has gradually matured in all aspects since the 1960s and is one of the new materials focused on research and development worldwide.Fiber-reinforced composites continue to develop toward high performance,multifunctionality,and complexity.To meet this demand for the materials,academics at home and abroad have investigated fiber-reinforced composites in greater depth,and current research primarily focuses on modifying the interfaces of composites.The small size region of the composite interface makes it more difficult for researchers to characterize its chemical structure,physical properties,and mechanical properties.Characterization of interfacial properties is thus also one of the hot spots in academic research.There is still a need to explore and refine the relationship between the microscopic interfacial and macroscopic mechanical properties of composites.We aimed to modify the glass fiber(GF)surface with a sodium hydroxide solution to improve the interfacial properties between GF and vinyl ester resin(VER).Glass fibers were soaked in sodium hydroxide solutions at concentrations of 1 mol L,2 mol L,and 3 mol L for 24 h,48 h,72 h,and 96 h.Glass fiber reinforced vinyl ester resin(GF VER)composites were made by using vacuum-assisted resin infusion molding technique.The interfacial shear strength between the fibers and the resin matrix was investigated by using the characterization method for the interfacial property of fiber extraction.We aim to examine the effect of the modification treatment on the surface morphology and the chemical interaction of the GF by using scanning electron microscopy and infrared spectroscopy.Before and after modification,the GF VER composites were tested for interfacial shear strength,flexural strength,and impact s

关 键 词：玻璃纤维 乙烯基酯树脂 界面改性 力学性能 真空辅助树脂灌注成型 

分 类 号：TS15[轻工技术与工程—纺织材料与纺织品设计]