Effect of epoxy resin-silane on physical properties of coated films on steel surfaces / S. Kiatkamjornwong in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 87, B3 (09/2004)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 87, B3 (09/2004) . - p. 149-157 Titre : Effect of epoxy resin-silane on physical properties of coated films on steel surfaces Type de document : texte imprimé Auteurs : S. Kiatkamjornwong, Auteur ; W. Yusabai, Auteur Année de publication : 2004 Article en page(s) : p. 149-157 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Epoxydes Métaux -- Revêtements protecteurs Réaction de couplage Résistance thermique Revêtements -- Propriétés mécaniques Revêtements organiques Silanes Index. décimale : 667.9 Revêtements et enduits Résumé : Physical and mechanical properties of epoxy resin-based coatings were improved using either a combination of a silane coupling agent aminoethylaminopropyltrimethoxysilane (AEAPS) and an epoxy resin, or an epoxy resin alone. An epoxy resin, with added AEAPS at the concentration of 1 or 3wt% at a film thickness of 25 to 100µm, showed better adhesion on steel surfaces than the epoxy resin alone. The epoxy resin, cured with an AEAPS concentration of 7wt% at a film thickness of 100µm, could withstand heat at 300°C for 20 minutes. The heat-resistance result was measured in terms of colour difference (ΔE) by a colorimetric method, from which the maximum ΔE between the coated film with the epoxy resin-AEAPS and the epoxy resin alone was 3.4. The heat resistance of coated films of epoxy resin-AEAPS tested by thermo-gravimetric analysis showed that the heat resistance increased with increasing AEAPS concentration. The Si-O-Si cross-linking position, found by Fourier transform infrared spectroscopy (FTIR), confirmed its effect on heat endurance and corrosion prevention. The authors found that the use of AEAPS of 7wt% for a 100µm film could prevent the occurrence of corrosion under a 1000-hour salt-spray exposure. The corrosion rate was found to be 0.39 mil (9.9µm) per year. The flooring with AEAPS addition to the epoxy resin was better than that with cycloaliphatic amine. The addition of AEAPS of 15.5wt% improved the film mechanical properties, hardness, compressive strength and chemical resistance in comparison with the neat epoxy resin or the combination of AEAPS and cycloaliphatic amine. Note de contenu : - EXPERIMENTAL : Epoxy resin coating on steel surface - Epoxy resin flooring on steel surface - CHARACTERISATION AND TESTING : Epoxy resin-based coating - RESULTS AND DISCUSSION : Evaluation of epoxy-coated film by colorimetry - Thermal properties of the cured films - Effect of silane content on the adhesion of the epoxy coating - Effect of silane content in the epoxy-based coating on corrosion resistance - Effect of silane content on the mechanical properties of the epoxy-based flooring - Table 1 : Epoxy coating composition - Table 2 : Epoxy flooring composition - Table 3 : Colour difference (ΔE) of the colour changes in the epoxy/AEAPS coating at different AEAPS (wt%) concentrations caused by heat exposure at various film thicknesses - Table 4 : Ahesive tape test on epoxy/silane coated film - Table 5 : Effect of salt-spray exposure time and coating thicknesss on cut usting and surface appearance - Table 6 : Hardness of epoxy/AEAPS flooring DOI : 10.1007/BF02699629 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699629.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5452 [article]

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