Table of Contents
Advances in Aerospace Engineering
Volume 2014, Article ID 325729, 7 pages
http://dx.doi.org/10.1155/2014/325729
Research Article

Cold Plasma Pretreatment of Carbon Fibre Composite Substrates to Improve Adhesive Bonding Performance

Department of Mechanical Engineering, Polytechnic School, University of Genoa, Via all’Opera Pia 15, 16145 Genoa, Italy

Received 30 June 2014; Revised 6 October 2014; Accepted 20 October 2014; Published 11 November 2014

Academic Editor: Stuart Edwardson

Copyright © 2014 Chiara Mandolfino et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The purpose of the paper is to investigate the effects of low pressure plasma treatment on wettability of carbon fibre reinforced polymer samples and on shear properties of adhesive bonded joints based on these substrates. In particular, two plasma process parameters, exposure time and power input, were optimized, performing contact angle evaluation on lap-shear tests. The plasma treatment was also compared with a conventional mechanical abrasion and untreated and only degreased specimens. The experimental results show that choosing the optimal parameters is possible to improve the wettability of composite substrates and reduce the contact angle.