| Titre : |
Sustainable, low-emissions, high-performance polyols for wood floor coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Gary Spilman, Auteur ; Scott Moore, Auteur ; Simone J. Marshall, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 34-43 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésion
Bois -- Vernis
Brillance (optique) -- Mesure
Dureté (matériaux)
Formulation (Génie chimique)
Isocyanates
Polyols
Polyuréthanes
Résistance à l'abrasion
Résistance aux taches
Résistance chimique
Vernis -- Additifs
Vernis bi-composant
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The industrial wood coatings space is undergoing some challenges and changes while continuing to grow. The development of sustainable, low-emissions, high-performance wood floor coating technologies continues to be of high interest to the coatings industry. Sustainable content in these coatings contributes to an improved environmental footprint, while low-emission compositions improve the indoor air quality and thereby the health and well-being of building and home occupants desiring to re-occupy these structures as soon as possible. Biorenewablecontent polyols that incorporate low volatile organic content (VOC) (<150 g/L) technology to yield two-component (2K) polyurethane wood floor coatings that have excellent stain and chemical resistance, excellent adhesion to both bare and prefinished floors, good abrasion resistance, low odor, and excellent gloss have been developed. The new coating properties may be readily tailored to meet the individual needs of different floor coating jobs by simply adjusting the isocyanate index or isocyanate type. This study compared a new fully formulated, 150 g/L coating based on this sustainable resin technology and demonstrated properties consistent with being the best overall protective coating for wood at the most economical usage (matching or better finish is achieved with only two coats vs the commercial products needing four or five coats over both original and refinished wood flooring) and lowest VOC in the test group. Initial performance from converting the new floor-coating products into waterborne systems was also investigated. |
| Note de contenu : |
- Table 1 : Isocyanate materials used
- Table 2 : Formulation additives
- Table 3 : Adhesion data
- Table 4 : Chemical resistance (MFMA specification)
- Table 5 : Hardness data
- Table 6 : Isocyanate blending results
- Table 7 : Catalyst ladder at two index levels for IPDI trimer
- Table 8 : Final 2K coating formulation taber test data
- Table 9 : Benchmark samples
- Table 10 : Final film properties of RMG 2K SB formulated 150 g/L coating vs MFMA specification
- Fig. 1 : König hardness results of commercial vs developmental samples
- Fig. 2 : a) Pencil hardness and b) adhesion results of commercial vs developmental samples
- Fig. 3 : Taber abrasion results at 100 and 500 cycles, grams weight loss
- Fig. 4 : Impact results
- Fig. 5 : Gloss reading readings for various products tested ve RMG 2K SB
- Fig. 6 : Gloss and distinctness of image from the developmental 2K solventborne coating over scuffed UV-cured OEM floor finish on maple
- Appendix : Final wood coating formulation for 75% we solids at 150 g/L VOC |
| En ligne : |
https://drive.google.com/file/d/1X210OPR2aKp7V5EM5u7S47PvbF1lJjQB/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31828 |
in COATINGS TECH > Vol. 15, N° 10 (10/2018) . - p. 34-43
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