Adhesion study of carbon fiber/polyaryletherketone thermoplastic composites with epoxy coatings

doi:10.19936/j.cnki.2096-8000.20240928.005

Abstract

Abstract: With the rapid development of continuous fiber reinforced thermoplastic composites in aerospace field, the surface coating for thermoplastic composites has also become particularly important, therefore, a systematic study of the adhesion of conventional epoxy coatings to carbon fiber reinforced polyaryletherketone (CF/PAEK) thermoplastic composites was carried out. The effects of abrasive blasting treatment, plasma treatment and abrasive blasting treatment + plasma treatment on the microscopic morphology, roughness, contact angle and chemical properties of the composite surface, as well as the adhesion strength between the composites and the epoxy coatings, were investigated separately. The results show that those three surface treatments can effectively increase the adhesion strength between the composites and the epoxy coating. Among them, the highest adhesion strength of 26.6 MPa was obtained for the composite surface coating after sandblasting + plasma treatment, which was 23.1% higher than that of untreated. Meanwhile, the heat resistance and hydraulic oil resistance of the composite surface coating adhesion strength after the three surface treatment were good, and the retention rate is higher than 80%.

Key words: thermoplastic composites, epoxy coatings, adhesion, plasma treatment, abrasive blasting treatment

CLC Number:

TB332

LI Moying, ZHENG Linfeng, LIU Gang, LI Mengjiao, YAO Jianan. Adhesion study of carbon fiber/polyaryletherketone thermoplastic composites with epoxy coatings[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(9): 37-42.

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