接枝改性纳米SiO_2粒子增强CF与聚酰亚胺树脂界面性能研究
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摘要
采用温和简单的浸渍法制备功能化改性二氧化硅(SiO_2),并在碳纤维表面引入了一层功能化改性SiO_2涂层,提高了碳纤维表面的润湿性和活性,同时增强了碳纤维/聚酰亚胺复合材料的界面。傅里叶变换红外光谱(FTIR)、X射线光电子能谱(XPS)证实了双-[γ-(三乙氧基硅基)丙基]四硫化物成功地将SiO_2功能化。扫描电子显微镜(SEM)结果表明,在添加量为1. 0%时,在碳纤维表面形成了均匀的涂层。在此条件下,与仅浸渍聚酰亚胺树脂相比,层间剪切强度(ILSS)和界面剪切强度(IFSS)分别提高了26. 37%和38. 27%。
Functional modified silicon dioxide( SiO_2) was prepared by mild and simple impregnation method,and a functional modified SiO_2 coating was introduced on the surface of carbon fiber,which could improve the wettability and activity of carbon fiber surface, and enhance the interface of carbon fiber/polyimide composites. Fourier transform infrared spectroscopy( FTIR), X-ray photoelectron spectroscopy( XPS) could confirm that bis-[γ-( triethoxysilyl) propyl]-tetrasulfide successfully functionalizes the SiO_2. Scanning electron microscope( SEM) results show that a uniform coating is formed on the surface of carbon fiber when the addition of SiO_2 is 1. 0%. Under this condition,interlaminar shear strength( ILSS)and interfacial shear strength( IFSS) could increase 26. 37% and 38. 27%,respectively,comparing with impregnated polyimide resins.
Functional modified silicon dioxide( SiO_2) was prepared by mild and simple impregnation method,and a functional modified SiO_2 coating was introduced on the surface of carbon fiber,which could improve the wettability and activity of carbon fiber surface, and enhance the interface of carbon fiber/polyimide composites. Fourier transform infrared spectroscopy( FTIR), X-ray photoelectron spectroscopy( XPS) could confirm that bis-[γ-( triethoxysilyl) propyl]-tetrasulfide successfully functionalizes the SiO_2. Scanning electron microscope( SEM) results show that a uniform coating is formed on the surface of carbon fiber when the addition of SiO_2 is 1. 0%. Under this condition,interlaminar shear strength( ILSS)and interfacial shear strength( IFSS) could increase 26. 37% and 38. 27%,respectively,comparing with impregnated polyimide resins.
引文
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[2]郑华升,李静,朱四荣.CFRP智能表层在结构健康监测中的应用[J].塑料工业,2017(3):157-160.
[3]乔伟静,田艳红,张学军.国产聚丙烯腈基高强高模碳纤维电化学氧化表面处理工艺[J].复合材料学报,2018,35(9):2449-2457.
[4]LEE H S,KIM S Y,NOH Y J,et al.Design of microwave plasma and enhanced mechanical properties of thermoplastic composites reinforced with microwave plasma-treated carbon fiber fabric[J].Composites Part B,2014,60:621-626.
[5]薛姗姗,刘海东,何琦,等.基于改性环氧树脂和二氧化硅纳米粒子的超疏水涂层的制备及其性能研究[J].塑料工业,2018,46(8):150-153.
[6]邹恒,董文洋,岳春波,等.化学接枝对碳纤维结构及其复合材料的影响[J].高分子材料科学与工程,2015,31(8):68-73.
[7]DANZI F,FANTERIA D,PANETTIERI E,et al.A numerical micro-mechanical study of the influence of fiber-matrixinterphase failure on carbon/epoxy material properties[J].Compos Struct,2017,159:625-635.
[8]郑志才,王尚,田雅萍,等.多壁碳纳米管在国产碳纤维增强环氧树脂复合材料中应用[J].工程塑料应用,2018,46(5):38-41.
[9]桑明珠,王凤,王士华,等.石墨烯/腰果酚改性酚醛树脂基碳纤维纸基复合材料制备及性能研究[J].塑料工业,2018,46(4):76-80.
[10]GABR M H,OKUMURA W,UEDA H,et al.Mechanical and thermal properties of carbon fiber/polypropylene composite filled with nano-clay[J].Composites Part B,2015,69:94-100.
[11]WU Q,ZHAO R Y,LIU Q L,et al.Simultaneous improvement of interfacial strength and toughness between carbon fiber and epoxy by introducing amino functionalized Zr O2,on fiber surface[J].Mater Design,2018,149:15-24.
[12]KIM B C,PARK S W,LEE D G.Fracture toughness of the nano-particle reinforced epoxy composite[J].Compos Struct,2008,86(1-3):69-77.