| Titre : |
Preparation and properties of polyurethane finishing agent using butylamine as chain-extension agent |
| Type de document : |
texte imprimé |
| Auteurs : |
Keyong Tang, Auteur ; Bing Zhu, Auteur ; Xuejing Zheng, Auteur ; Dennis C. Shelly, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
p. 295-301 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Allongement à la rupture
Butylamine
Cuirs et peaux -- Finition
Cuirs et peaux -- Propriétés mécaniques
Humidité -- Absorption
Polyuréthanes
Résistance à l'humidité
Transition vitreuse
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
With isophorone diisocyanate (IPDI), polytetrahydrofuran (PTMG), and dimethylolpropanoic acid (DMPA) as monomers, aqueous polyurethane finishing agents were synthesized. Butylamine, ethylene glycol and ethylene diamine were used as chain-extension agents. The aqueous polyurethane finishing agents were dried to yield polyurethane films (PU films). Mechanical properties of the films were studied. Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and water absorption were employed to characterize the structure and behaviors of the polyurethane films. Properties of the films obtained by different chain-extension agents were compared. Results show that the properties of the butylamine chain-extended film are better than those of the films chain-extended by either ethylene glycol or ethylene diamine. The elongation at break was the highest, 1454%. The glass transition temperature (Tg) reached -82°C and the water resistance was also better. |
| Note de contenu : |
- EXPERIMENTAL : Materials and apparatus - Synthesis of aqueous polyurethane finishing agents - Preparation of polyurethane films - Characterization (Mechanical behavior - FTIR - Thermal analysis - Water absorption)
- RESULTS AND DISCUSSION : Mechanical properties of different PU films - Glass transition temperature (Tg) of the PU film - Water absorption of the PU films |
| En ligne : |
https://drive.google.com/file/d/13-BZ54p88tuTxZCgHHWO1PWIG7dtpMU_/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17833 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 9 (09/2009) . - p. 295-301
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