| Titre : |
Chrome-less tanning - a non-pickling process based on Zr-Al-Ti complex tanning agent |
| Type de document : |
texte imprimé |
| Auteurs : |
Wang Kangjian, Auteur ; Chen Yining, Auteur ; Dan Nianhua, Auteur ; Dan Weihua, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 1-6 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Croûte (cuir) On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés mécaniques
Eaux usées -- Teneur en chrome hexavalent
Essais (technologie)
Etudes comparatives
pH -- Mesure
Tannage au chrome
Tannage minéralTannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium
Température de retrait
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
The non-pickting tanning for cattle hide upper leather was carried out with chrome-less process based on zirconium-aluminium-titanium tanning (DMT-II) in this paper. The best material offers of DMT-Il and chrome tanning agent were selected through preliminary experiments. The operating parameters in the tanning process, including the pretreatment, the temperature after basification and the final pH, were optimize using the orthogonal testing method. The chrome content of wastewater was chosen as an evaluation index. The evaluation indexes of the optimum scheme were compared with those of the conventional chrome tanning method. The shrinkage temperature of the crust leather (Ts), the chrome content of wastewater BOD5/COD and the gross mechanical property and the histological sections Were evaluated.
The results.showed that the shrinkage temperature of the crust leather could be up to 90°C when the tanning temperature was 35°C and the pH after tanning was 4.5, the chrome content of the wastewater was less than 50mgL-1. The BOD5/COD was much higher than those of the.converitional chrome tanning method. Moreover, the shrinkage temperature, mechanical properties, crust leather fibres tighter density were comparable to those of conventional chrome tanning. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Experimental procedures
- RESULTS AND DISCUSSION : Non-pickling chrome-less tanning preliminary experiment - Orthogonal test of non-pickling chrome-less tanning
- TABLE : 1. The factors and levels of orthogonal tests - 2. Non-pickling chrome-less tanning process - 3. Results of non-pickling chrome-less tanning preliminary experiment - 4. Results of orthogonal test of non-pickling chrome-less tanning - 5. Analysis of orthogonal test of non-pickling chrome-less tanning - 6. Results of optimum non-pickling chrome-less tanning and common chrome tanning process
- FIGURES : 1. Histological observation of the cross sections of crust leathers - 2. Histological observation of the longitudinal sections of crust leathers |
| En ligne : |
https://drive.google.com/file/d/10o_ZJ2LjsMaC060vjadNeJLmy-AxP2Uk/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30007 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 1 (01-02/2018) . - p. 1-6
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Chrome-less tanning - a non-pickling process based on Zr-Al-Ti complex tanning agent in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 1 (01-02/2018)
