[article]
| Titre : |
Siliconized epoxy coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Ananda Kumar, Auteur ; M. Alagar, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 152-159 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Unmodified epoxy and siliconized epoxy coating systems (in the absence and in the presence of 15% zinc powder) were developed by using epoxy resin GY 250 (DGEBA) and hydroxyl terminated polydimethylsiloxane with γ-aminopropyltriethoxysilane as crosslinker and dibutyltindilaurate as catalyst. Hexamethylenediamine (A), polyamidoamine (B), aromatic polyamine adduct I (C) and aromatic polyamine adduct II (D) were used as curing agents for unmodified epoxy and siliconized epoxy coating systems. Physical properties such as coating thickness (DFT), adhesion, water absorption, degree of rusting and blistering of unmodified epoxy and siliconized epoxy coating systems (in the absence and in the presence of 25% zinc powder) were studied. The effect of siloxane introduction and the addition of zinc powder (25%) into the unmodified epoxy coating systems were also studied. Similarly, the mechanical properties such as abrasion resistance, hardness and Impact strength of unmodified epoxy and siliconized epoxy coating systems with the addition of 25% zinc powder were discussed. It is observed from the studies, that the incorporation of siloxane in to the unmodified epoxy resin enhances the adhesion to steel specimens, reduces water absorption, degree of rusting and degree of blistering of steel specimens. Further, the addition of 25% zinc powder to the unmodified epoxy and siliconized epoxy coating systems improves the physical properties of the coating systems. Similarly, the incorporation of siloxane in to the unmodified epoxy resin Improves the impact strength, abrasion resistance and reduces the hardness values. Addition of 25% zinc powder to the unmodified epoxy and sillconized epoxy coating systems further improves the impact strength, abrasion resistance and hardness. |
| Note de contenu : |
- Preparation of prepolymer mix
- Preparation of siliconized epoxy coating system
- Physical properties of coatings
- Mechanical properties of the coating systems
- Correlation between electrochemical and physicomechanical data |
| En ligne : |
https://drive.google.com/file/d/1UEbgZZOvXkA-_JnLsPUAXN_SiXuCqKSY/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10972 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4/01 (04/2001) . - p. 152-159
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Siliconized epoxy coatings in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/01 (04/2001)
