Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Effect of flame treatment in the coating adhesion on polypropylene substrate
Submission Author:
Elisa Medeiros , PR , Brazil
Co-Authors:
Ricardo Brandes, Hazim Ali Al-Qureshi, Derce de Oliveira Souza Recouvreux, Elisa Medeiros
Presenter: Derce de Oliveira Souza Recouvreux
doi://10.26678/ABCM.COBEM2017.COB17-0489
Abstract
Some of the polymers largely used, such as Polypropylene (PP), have poor superficial properties making necessary a pre-treatment before coating the paint film. There is a number of pre-treatments related to the PP surface improvement, the most known at the industry is the flame process because it is possible to achieve the necessary level of surface energy in a short processing time. The flame process applied on polypropylene substrates increases the adhesion for painting films. Thus, the main objective in this work was to produce PP samples treated by flame treatment and perform morphological, chemical and surface tension characterizations. Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR) and Dyne Test Inks were employed to evaluate the material properties. The morphological analysis presented a superficial modification and the chemical analyses showed the formation of new functional groups after the flame treatment. This treatment increased the surface tension of the samples by approximately 20%. These results proved the efficacy of the flame treatment in the increase of the surface energy and in the adherence of the coatings applied to the PP substrates.
Keywords
Polypropylene, Flame treatment, Adherence, coating, Painting
