| Titre : |
Sustainable polyurethanes are here to stay : Bio-based polyols provide flexible, versatile multi-substrate solutions |
| Type de document : |
texte imprimé |
| Auteurs : |
Wolfgang Geuking, Auteur ; Nathan Noyes, Auteur ; Eric Brouwer, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 34-38 |
| Langues : |
Anglais (eng) |
| Catégories : |
Biopolymères
Colles:Adhésifs
Durée de vie (Ingénierie)
Matériaux -- Allègement
Polyesters
Polyols
Polyuréthanes
Résistance à l'humidité:Résistance à l'eau
Résistance thermique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The polyester polyols presented in this paper are based on C36-dimer acids from natural oils, giving these products high renewable content. To meet industry's need to move towards sustainable and bio-based materials, a new portfolio of 100 0/0 bio-based-polyester polyols have been developed. The branched non-crystalline dimer-acid structure offers (low temperature) flexibility, prevents strain-induced crystallisation and enhances wetting properties, while the hydrocarbon character imparts water repellence and affinity for a wide range of substrates. Furthermore, they provide a unique combination of enhanced hydrolytic and thermo-oxidative stability, which is highly relevant for demanding applications such as transportation and electronic adhesives or renewable energy systems. |
| Note de contenu : |
- Changing needs for a changing world
- Bio-based-polyol technology
- New 100% bio-ased polyols for polyurethane adhesives
- Highly durable polyurethane adhesives
- Exposure trials
- Flexibility and reduced flex fatigue
- Versatile adhesion
- Life-cycle analysis
- Measuring bio-content
- Sustainability in use
- Fig. 1 : Thermo-oxidative and hydrolytic resistance of bio-based, reactive PU-adhesive films
- Fig. 2 : Elongation curves for adhesives films
- Fig. 3 : Adhesion to a variety of difficult to bond substrates
- Fig. 4 : Adhesion to polycarbonate
- Fig. 5 : Adhesion after exposure to high humidity
- Fig. 6 : Typical life-cycle analysis of cumulated CO2 equivalent absorption and emissios for fossil fuel-based and biobased products
- Fig. 7 : Reduced fuel consumption due to light weightingin cars, enabled by bio-based adhesives
- Table 1 : Bio-based-polyol grades |
| En ligne : |
https://drive.google.com/file/d/1UT0AfpRUKppLatm1Mmz-nFvGy9COVskO/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35862 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2021) . - p. 34-38
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Sustainable polyurethanes are here to stay in EUROPEAN COATINGS JOURNAL (ECJ), N° 4 (04/2021)
