| Titre : |
Preparation and properties of waterborne polyurethane modified by stearyl acrylate for water repellents |
| Type de document : |
texte imprimé |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 1283-1292 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Acrylate de stéaryle
Caractérisation
Emulsions -- Stabilité
Enduction textile
Essais (technologie)
Granulométrie
Humidité -- Absorption:Eau -- Absorption
Imperméabilisation
Polymères -- Synthèse
Polymères en émulsion
Polyuréthanes
Rhéologie
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Double bond end-capped waterborne polyurethane (DWPU) was synthesized from toluene diisocyanate, hydroxypropyl polysiloxane, trimethylolpropane, N-methyldiethanolamine, and hydroxyethyl acrylate. Then water repellents with long-chain hydrophobic alkyl structure were obtained by radical copolymerization of stearyl acrylate (SA) and DWPU. The waterproofing performance and other properties of the water repellents were studied for different SA contents. The results showed that, for the water repellent with SA content of 50 wt%, the water absorption of the film reduced to 4.29% while the water contact angle of fabric coated by the water repellent rose to 141.5°. In addition, the optimum SA content of the water repellent was 40%, achieving the highest score of 85 points in the waterproof performance evaluation. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of DWPU - Preparation of staryl acrylate-modified waterborne polyurethane (SAWPU) - Preparation of test samples - Characterization and testing
- RESULTS AND DISCUSSION : IR characterization of SAWPU - Appearance and stability of SAWPU emulsions - Particle size and viscosity of SAWPU emulsions - Water absorption of SAWPU - Surface energy and lag angle of SAWPU films - Water repellency of fabric coated by SAWPU emulsion - Static contact angle of fabric - Surface morphology of fabrics - Color difference - Washing resistance of coated fabric |
| DOI : |
10.1007/s11998-018-0096-x |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0096-x.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31343 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 6 (11/2018) . - p. 1283-1292
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