Title: Improved moisture and hydrocarbons barrier of epoxy resin-based coating

Authors: Peter Lubomir Polak, Marly Grinapel Lachtermacher, Ronaldo Domingues Mansano

Addresses: Laboratorio de Sistemas Integraveis, Departamento de Engenharia de Sistemas Eletronicos, Escola Politecnica, Universidade de Sao Paulo, Av. Prof. Luciano Gualberto, 158-Trav. 3-05508-900-Sao Paulo-SP–Brasil. ' Petroleum Chemist – CENPES – Petrobras, Av. Jequitiba, 950-Quadra 7-Ilha do Fundao – Cidade Universitaria-21949-900 Rio de Janeiro-RJ-Brasil. ' Laboratorio de Sistemas Integraveis, Departamento de Engenharia de Sistemas Eletronicos, Escola Politecnica, Universidade de Sao Paulo, Av. Prof. Luciano Gualberto, 158-Trav. 3-05508-900-Sao Paulo-SP–Brasil

Abstract: To improve the surface characteristics of epoxy resin coatings, a treatment by fluorine-containing plasma was used to develop a coating with low surface free energy and improved chemical resistance. Through the coating analysis it was possible to verify information about the CFn bond formation and the fluorination depth. The best plasma process parameters presented the best fluorination depth, 90 nm, and fluorine concentration was nearly 30%. The improvement in contact angle of water was 50% and of raw petroleum was 130%. Salt spray test proves that the coating fluorination decreases the chance of substrate corrosion.

Keywords: surface treatment; plasma processing; corrosion protection; polymeric coatings; fluorination; moisture; hydrocarbons; epoxy resin coatings; salt spray testing; substrate corrosion.

DOI: 10.1504/IJSURFSE.2008.022286

International Journal of Surface Science and Engineering, 2008 Vol.2 No.6, pp.480 - 487

Published online: 26 Dec 2008 *

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