[article]
| Titre : |
High performance acrylic resin based on hybrid chemistry for 2k polyurethane coating system |
| Type de document : |
texte imprimé |
| Auteurs : |
Pratik N. Mehta, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 41-56 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Hybridisation technique offers the advantage of each component, used for hybridisation, contributing its individual benefit to the overall system. The present work is focussed on use of hybrid chemistry in development of resins for improved performance. Silicones exhibit excellent weatherability because of its strong chemical bond and hydrophobic properties. Here a silicon-carbon hybrid chemistry is applied to develop siloxane modified acrylic resins for 2K polyurethane coating system. Acrylic resins were developed with built- in siloxane linkages, which are introduced by hybridizing acrylic polymer with polysiloxanes. Resins were characterised and evaluated in 2K polyurethane system as against conventional acrylic resin. Biuert type polyisocyanate is used as a crosslinker. Effect ofsiloxane content of resin and its correlation to various coating parameters were studied. Remarkable improvement in gloss retention, Tensile strength, % elongation and adhesion on different substrates without affecting the other properties was seen. |
| Note de contenu : |
- Silicones
- An approach
- Experimental : materials, synthesis and characterizations
A) Polysiloxane
B)Polyisocyanate
- Synthesis of hybrid polymers
A) Synthesis of acrylic polyol resins
B) Siloxane modifications of acrylic polyol resins
- Characterization of siloxane modified polymers
- Preparation of clear coating film
- Preparation of paint
- Characterization of paint – physical properties
- Preparation of coated panels for evaluation
- Characteristics of paint – dry film properties
- Results and discussion
- Characterization of siloxane modified acrylic resin
- Tensile properties and siloxane cross linking of cured clear coat polymers
- Characteristics of paint – curing study
- Characteristics of paint – dry film properties
- Chemical resistance performance analysis
- Adhesion on different substrate (1 mm grid test)
- Corrosion resistance properties
- QUV resistance analysis
|
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12094 |
in PAINTINDIA > Vol. LIII, N° 3 (03/2003) . - p. 41-56
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High performance acrylic resin based on hybrid chemistry for 2k polyurethane coating system in PAINTINDIA, Vol. LIII, N° 3 (03/2003)
