[article]
| Titre : |
Polyurea : A revolution in coating technology |
| Type de document : |
texte imprimé |
| Auteurs : |
Santosh Kumar, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 73-84 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Polyurée
Revêtements
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Polyurea is a state of the art, high performance, elastomeric membrane which offers several advantages to the owner, contractor and applicator. This technology gives blend of exciting properties such as fast curing even at low temperatures, water insensitivity along with excellent chemical resistance, mechanical properties, high durability and negligible VOC content. The broad window of application conditions and excellent properties makes polyurea a very suitable coating for several applications such as roof repair, containment liners, membranes, car park decks, bridges and offshore etc. The new developments in the raw material and the advancement in application equipment have widened the application domain tremendously. Continuous development of new raw materials for formulation work will move this technology to a higher level of industrial coating work in near future. |
| Note de contenu : |
- Polyurea chemistry/formulation
- Raw materials for polyurea : Isocyanate - Polyetheramines - Chain extenders - Diluent - Additives, fillers & pigments
- Key formulation parameters affecting property of polyurea
Type of prepolymer - Secondary amine content - Cross linking density - - Performance issues - Fast reaction rates - Moisture sensitivity - Flexibility and hardness - Low or no volatile organic compounds (VOCs) - Excellent adhesion - High abrasion resistance - Cheminical resistance - Superior tensile strength - Heat and fire resistance - Ability to function at extreme conditions
- Applications of polyurea coatings : Tank coatings - Tank linings - Marine - Pipeline coatings & linings - Rail cars - Roof coating - Truck bed liners - Water parks & playgrounds -
Architectural design - Shielding foam structure - Anti skid performances - Fuel storage & containments
- Latest developments in polyurea coating systems : Influence of the functionality of the system - 2,4'-Isomer content of the prepolymer - Fast property development - Flexibility and/or hardness
- Limitations of Polyurea : Fast curing - Fast build up of a thick layer - Cost |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11495 |
in PAINTINDIA > Vol. LVII, N° 7 (07/2007) . - p. 73-84
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Polyurea : A revolution in coating technology in PAINTINDIA, Vol. LVII, N° 7 (07/2007)
