Preparation of copolyamide water-based sizing agent for carbon fiber and interfacial modification of CF/PA6 composites

doi:10.19936/j.cnki.2096-8000.20230628.003

Abstract

Abstract: In order to improve the interfacial properties of carbon fiber reinforced polyamide 6(CF/PA6) composites, the CF/PA6 composites were prepared by vacuum molding process using copolyamide water-based sizing agent as surface modifier. The microstructure, elemental changes and mechanical properties of CF and CF/PA6 composites were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy and universal testing machine. The experimental results show that the sizing process can successfully connect the copolyamide to the surface of carbon fiber and improve the binding ability between carbon fiber and polyamide 6. When the concentration of copolyamide waterborne sizing agent is 0.5%, the mechanical properties of CF/PA6 composite is the best. The bending strength and interlaminar shear strength of CF/PA6 composite are 1044.5 MPa and 70.6 MPa, which are increased by 64.4% and 97.8% respectively, compared with those without treatment.

Key words: carbon fiber, polyamide 6, sizing agent, surface modification, mechanical property, composites

CLC Number:

TB332

WANG Shaofei, XUE Kanghao, FAN Lin, YANG Qing, LÜ Yueen, DING Xiaoma, ZHAO Le, ZHANG Hui, LIU Yong. Preparation of copolyamide water-based sizing agent for carbon fiber and interfacial modification of CF/PA6 composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(6): 17-22.

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