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Interfacial strengthening and dynamic mechanical properties of CF/PEEK composites with a water-based PAAs/Montmorillonite nanocomposite sizing agent
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DOI：10.1016/j.compstruct.2026.120434.png)
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Abstract
En 中文
This article conducted an investigation into the interfacial strengthening of carbon fiber-reinforced PEEK (CF/PEEK) through the modification of CF with a water-based PAAs/Montmorillonite (MMT) nanocomposite sizing agent. The surface roughness of CF exhibited a significant growth with the augmentation of MMT content. Compared with desized CF (e.g., DCF), the surface energy of PAAs/MMT-sized CF (e.g., PMCF1) increased by 503.95 %. The flexural strength, modulus, and interlaminar shear strength (ILSS) of PMCF1/PEEK increased by 61.24 %, 19.87 %, and 12.95 %, respectively. The interfacial strengthening can be explained by two factors: 1) increasing roughness and surface energy of CF due to MMT, and 2) enhanced interaction and molecular chains entanglement due to PI. Thinner CF fabrics contributed to a further enhancement of the mechanical properties of the composites. The flexural strength, modulus, and ILSS of TPMCF0.3/PEEK reached 800.82 MPa, 95.03 GPa, and 62.98 MPa, respectively. This is due to the higher CF volume fraction and resin impregnation of the thin CF fabric system. The flexural strength achieved in this study have an outstanding performance among related studies. The interface modification method described in this paper holds promise to enhance the strength of the CF/PEEK.
Keywords:
CF/PEEK composites
interfacial strengthening
PAAs/MMT nanocomposite
surface modification
mechanical properties
Journal
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7.1
Papers:
1.8W
Citations:
8.0W
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