Improve the interfacial properties of carbon fiber reinforced epoxy resin composites by maleimide-modified waterborne polyurethane sizing agent

被引：11
作者：
Li, Chengsen [1 ,2 ]
Gao, Xueping [1 ,2 ]
Zhu, Bo [1 ,2 ]
Yuan, Xiaomin [1 ,2 ]
Qiu, Zhijie [1 ,2 ]
Zhang, Ye [1 ,2 ]
Yan, Shuhan [1 ,2 ]
机构：
[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, State Key Lab Crystal Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China
[2] Shandong Univ, Carbon Fiber Engn Res Ctr, Sch Mat Sci & Engn, Jinan, Shandong, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2023年 / 140卷 / 11期
关键词：
carbon fibers; cure; fiber; matrix bond; mechanical properties; CHEMICAL INTERACTION; GRAPHENE OXIDE; ADHESION; NANOTUBE;
D O I：
10.1002/app.53611
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The N-(4-hydroxyphenyl) maleimide (4-HPM) modified waterborne polyurethane emulsions (MWPU) were used as surface sizing agents to improve the interfacial adhesion between carbon fibers (CF) and epoxy resin matrix. Dynamic light scattering (DLS), transmission electron microscope (TEM), and thermogravimetric analysis (TGA) showed the particle size distribution, storage stability, and thermal stability of the modified MWPU. And the surface reactivity of CF increased significantly after sizing. The interfacial shear strength (IFSS) and the interlaminar shear strength (ILSS) of CFREs were tested, and the fracture morphology was observed. The result showed that a continuous and uniform sizing layer is formed on the surface of CF. In particular, the comprehensive performance and interfacial modification effect of the MWPU emulsion outperformed other samples when the 4-HPM content was 1.0 wt%. Compared with unsized carbon fibers, the IFSS and ILSS are up to 71.30% and 30.81% higher, respectively.
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页数：15
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