| Titre : |
Vinyl ester resins and their blends for protective Coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Arun Maithani, Auteur ; Deepak Srivastava, Auteur ; Devendra Agarwal, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 97-104 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Vinyl ester resins (VER's) of varied acid values (12, 26 and 40 mg/gm solid) were prepared by reacting different monoepoxies (DEGBA, cresyl, phenyl and butyl glycidyl ether) with methacry/ic acid (mole ratio 1:0.9) in the presence of triphenyl phosphene (1 phr by wt. of epoxy resin) as catalyst and hydroquinone (200 ppm) as an inititor at 85 ± 1 °C. The samples of different VER's for curing studies was prepared by using 10/4/0.2 (by wt.) of resin, reactive diluents (Styrene) and benzoyl peroxide respectively. Blends of different VER's of comparable acid values were also cured in the same manner as with the individual VERs. The curing conditions of the experimental coatings were determined by using the Differential Scanning Calorimetry (DSC) system.. The DSC scans were obtained under dynamic and isothermal conditions choose a temperature and time for completion of curing reaction (90 min at 85°C) The coatings of individual VER's and their blends when exposed to different chemicals for a period of one year showed better chemical resistance properties than already available monoepoxy based coating systems. Thermal stability of VER's having lower acid values was better than those of VERs having higher acid values. Cresyl and phenyl based VER's blend showed better mechanical and chemical resistance properties as compared to those synthesized from DEGBA and butyl based VER's blend. |
| Note de contenu : |
- Synthesis of vinyl ester resins and their blends
- Curing of vinyl ester resins and their blends
- Thermal stability of vinyl ester resins and their blends
- Chemical Resistance
- Studies of the curing behavior of vinyl ester resins and their blends |
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in PAINTINDIA > Vol. LVI, N° 10 (10/2006) . - p. 97-104
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Vinyl ester resins and their blends for protective Coatings in PAINTINDIA, Vol. LVI, N° 10 (10/2006)
