Metallization of carbon fiber reinforced polymers: Chemical kinetics, adhesion, and properties

SURFACE & COATINGS TECHNOLOGY

卷:308

Article; Proceedings Paper

Addou, Fouzi¹  Duguet, Thomas¹  Bosso, Piera²  Zhang, Anne¹  Amin-Chalhoub, Eliane¹  Fanelli, Fiorenza³  Vahlas, Constantin¹ 

[1] Univ Toulouse, CIRIMAT, CNRS INPT UPS, 4 Allee Emile Monso,BP44362, F-31030 Toulouse, France

[2] Univ Bari Aldo Moro, Dept Chem, Via Orabona 4, I-70126 Bari, Italy

[3] Univ Bari Aldo Moro, Dipartimento Chim, CNR NANOTEC, Via Orabona 4, I-70126 Bari, Italy

关键词: Epoxy/C fibers composite;    Metallization;    Adherence;    MOCVD;    Cu;   

DOI  :  10.1016/j.surfcoat.2016.06.098

来源: Elsevier

【 摘 要 】

In the present study, we investigate different surface pretreatments and their influence on a subsequent surface metallization. A direct liquid injection metalorganic CVD (DLI-MOCVD) process is presented for the low temperature metallization of composites, ultimately aiming at the surface functionalization of 3D parts. The process involves the organometallic precursor Cu(I) hexafluoroacetylacetonate 2-methyl-1-hexene-3-yne (hfac)Cu(MHY). We determine chemical kinetics of the global deposition reaction and show the improvement of the adhesion of the Cu films by applying surface pretreatments that etch and/or activate the surface before deposition. To this purpose, gas phase and wet chemical processes are used. Gas phase pretreatments consist either in the use of a remote microwave plasma, an in situ UV oxidation, or in the deposition of acrylic acid/ethylene plasma buffer layer by using an atmospheric pressure cold plasma jet. The liquid phase pretreatment is based on a commercial series of solutions that includes swelling, oxidation, and neutralization steps. The adhesive strength of the Cu films on poly-epoxy and on carbon fiber/poly-epoxy composite surfaces is specifically investigated by scratch and cross-cut testing, and is correlated with topographical, chemical, and energetic characteristics of the surfaces prior deposition, investigated by interferometry, X-ray photoelectron spectroscopy and wettability measurements through the sessile drop method. Pretreatments result in surface functionalization and topographical changes which significantly increase the surface energy and improve the wettability. In some cases the induced modification of the microstructure of the Cu films is found to be beneficial to the electrical resistivity. (C) 2016 Published by Elsevier B.V.

【 授权许可】

Free