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

IF 2.7 3区化学 Q2 POLYMER SCIENCE Journal of Applied Polymer Science Pub Date : 2023-01-20 DOI:10.1002/app.53611

Chengsen Li, Xueping Gao, Bo Zhu, Xiaomin Yuan, Zhijie Qiu, Ye Zhang, Shuhan Yan

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引用次数: 4

Abstract

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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用马来酰亚胺改性水性聚氨酯施胶剂改善碳纤维增强环氧树脂复合材料的界面性能

采用N-(4-羟基苯基)马来酰亚胺(4-HPM)改性水性聚氨酯乳液(MWPU)作为表面施胶剂，改善碳纤维与环氧树脂基体之间的界面附着力。动态光散射(DLS)、透射电子显微镜(TEM)和热重分析(TGA)对改性MWPU的粒径分布、储存稳定性和热稳定性进行了表征。施胶后CF的表面反应性显著提高。测试了CFREs的界面抗剪强度(IFSS)和层间抗剪强度(ILSS)，并观察了其断裂形态。结果表明，在CF表面形成了连续均匀的施胶层，特别是当4-HPM含量为1.0 wt%时，MWPU乳液的综合性能和界面改性效果优于其他样品。与未施胶碳纤维相比，IFSS和ILSS分别提高了71.30%和30.81%。

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来源期刊

Journal of Applied Polymer Science 化学-高分子科学

CiteScore

5.70

自引率

10.00%

发文量

1280

审稿时长

2.7 months

期刊介绍： The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.

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