[article]
| Titre : |
Leather finishing : Preparation and application of cationic organosilicone/polyurethane micro-emulsion |
| Type de document : |
texte imprimé |
| Auteurs : |
Shen Yiding, Auteur ; Haihua Wang, Auteur ; Guiqiang Fei, Auteur ; Fan Xiaojing, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 108-115 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse morphologique
Analyse thermique
Caractérisation
Cuirs et peaux -- Finition
Cuirs et peaux -- Propriétés mécaniques
Essais de résilience
Granulométrie
Microémulsions
Organosilicones
Polymères -- Analyse
Polyuréthanes
Résistance à l'abrasion
Rhéologie
Tension superficielle
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Using a catalyst and cosolvent, hydroxyl-terminated polydimethylsiloxane (HPMS) based polyurethane (PU) micro-emulsion (WPU/HPMS) derived from isophorone isocyanate (IPDI) and poly- tetramethylene glycol (PTMG) was synthesised by self-emulsifying copolymerization. The polymer was then used in leather finishing.
The structure, rheological behavior, morphology and heat performance were characterized by Fourier transform infared spectroscopy (FT-IR), 1H nuclear magnetic resonance (1H NMR), gel permeation chromatography (GPC), light scattering (LS), transmission electron microscopy (TEM), interfacial tension (IT), wide-angle X-ray diffraction (WAXD), differential scanning calorimeter (DSC) and thermogravimetry (TG).
The results reveal that WPU/HPMS micro-emulsion is endowed with low surface tension, pseudoplasticity and thixotropy, which are beneficial to the properties of coating. DSC and TG diagrams also reveal that the application range of product was enlarged. Furthermore, the WPU/HPMS micro-emulsion was found to be a good finishing agent, endowing leather with a brightness, softness, plump/full and smooth surface, and thus improving the quality of leather. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Materials - Synthesis of WPU/HPMS micro-emulsion
- POLYMER ANALYSIS
- FINISHED LEATHER PROPERTIES
- RESULTS AND DISCUSSION : FT-IR analysis - H NMR analysis - Particle size and morphology - Surface tension of the emulsion - Rheological behavior of PU/HPMS micro-emulsion - Thermal analysis
- APPLICATION OF WPU/HPMS MICRO-EMULSION IN LEATHER FINISHING : Leather finishing process - Mechanical properties
- Table 1 : Chemical shift of various protons
- Table 2 : Surface tension of WPU and WPU/HPMS micro emulsions
- Table 3 : The n, k values for WPU and WPU/HPMs micro-emulsions
- Table 4 : Experimental results of DSC for WPU and WPU/HPMS
- Table 5 : The effect of HPMS on the heat resistance of waterborne WPU cast
- Table 6 : Physical and chemical indexes of leather after finishing
- Table 7 : Contact angles of the leather surface
- Table 8 : Results of dry rubbing fastness
- Table 9 : Results of wet rubbing fastness
- Table 10 : Flex resistance of finishing leather |
| En ligne : |
https://drive.google.com/file/d/1ZThmNSkOEZ-xvm6Vb5hiiI3yrvChyyYO/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39028 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 3 (05-06/2007) . - p. 108-115
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Leather finishing : Preparation and application of cationic organosilicone/polyurethane micro-emulsion in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 3 (05-06/2007)
