[article]
| Titre : |
Preparation of high-solid, low-viscosity waterborne polyurethane: based on multiparticle size composite emulsification |
| Type de document : |
texte imprimé |
| Auteurs : |
Kunpeng Lou, Auteur ; Siliang Li, Auteur ; Yang Cao, Auteur ; Menghang Li, Auteur ; Xiaoxuan Zou, Auteur ; Bo Jing, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 907-923 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Caractérisation
Emulsification
Granulométrie
Haut extrait sec
Polymères en émulsion
Polyuréthanes
Revêtements en phase aqueuse
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In this paper, waterborne polyurethane (WPU-SL) with high solid content and low viscosity was successfully prepared by compounding large particle size emulsion (WPU-L) with a variety of small particle size emulsions (WPU-S) by investigating the effects of small particle size type, particle size ratio, and volume ratio on the emulsion properties. A series of characterization techniques of the waterborne polyurethane was carried out by FTIR, DSC, contact angle, viscometer, particle size meter, and universal testing machine. The results show that the WPU-L/WPU-S = 5/1 emulsion has a high solid content, good emulsion stability, and excellent coating film properties. When WPU-S1 and WPU-S3, two small particle size emulsions with a particle size ratio of 2.45 and 3.79, were emulsified with WPU-L, the solid content was up to 61.23%, the viscosity was only 342 mPa s, the tensile strength reached 20.97 MPa, and the adhesion grade was 5B, which was the most excellent overall performance, showing satisfactory results. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of small-particle waterborne polyurethane (WPU-S) - Preparation of large-particle waterborne polyurethane (WPU-L) - Preparation of high-solid content waterborne polyurethane (WPU-SL) - Preparation of WPU films
- CHARACTERIZATION
- RESULTS AND DISCUSSION : FTIR spectra of WPU - Emulsion properties of small particle size emulsions (WPU-S) and large particle size emulsions (WPU-L) - The particle size of WPU-SL emulsions and their solid content and viscosity - Thermal properties of WPU-SL emulsions - Water absorption of WPU-SL emulsions and their contact angle - Tensile properties of WPU-SL emulsions - Adhesion of WPU-SL emulsions |
| DOI : |
https://doi.org/10.1007/s11998-023-00859-3 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-023-00859-3.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41066 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 3 (05/2024) . - p. 907-923
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Preparation of high-solid, low-viscosity waterborne polyurethane: based on multiparticle size composite emulsification in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)
