A method for measuring shrinkage temperature of leather / Ning Duo in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 5 (09-10/2011)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 5 (09-10/2011) . - p. 221-224 Titre : A method for measuring shrinkage temperature of leather Type de document : texte imprimé Auteurs : Ning Duo, Auteur ; Liu Yahua, Auteur ; Huang Jianbing, Auteur ; Lv Bin, Auteur ; Zhang Ting, Auteur Année de publication : 2011 Article en page(s) : p. 221-224 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux Mesures dimensionnelles sans contact Mesures physiques Température de retrait Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : We propose an innovative method for the simultaneous determination of multiple leather samples' shrinkage temperature via non-contact electrical measurement. We use a single-chip microcomputer (SCM) to manage the whole measurement process. While controlling the heating module to give uniform temperature increases, the SCM collects information from the sample displacement and temperature sensors and displays it in real-time on the screen. We are also able to transmit the raw data to a host computer via a RS232 serial port for further study, such as comparative analysis of multiple samples' deformation process. Further, we have designed a standard sampling device that is easy to operate and effectively reduces human factors on measurement results. Our approach improves upon the traditional mechanical-contact measurement method and generates accurate measurement and real-time data display of leather shrinkage. En ligne : https://drive.google.com/file/d/1GBAu3d1W2Cd2kXn4Vy5679P-dTfm8Cit/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12223 [article]

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Preparation and characterization of modified protein retanning agent based on leather waste / Wang Xuechuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 3 (05-06/2016)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 3 (05-06/2016) . - p. 136-141 Titre : Preparation and characterization of modified protein retanning agent based on leather waste Type de document : texte imprimé Auteurs : Wang Xuechuan, Auteur ; Zhang Ting, Auteur ; Ren Longfang, Auteur ; Qiang Taotao, Auteur Année de publication : 2016 Article en page(s) : p. 136-141 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylate de butyle Agents de tannage Caractérisation Collagène Cuirs et peaux -- Déchets -- Recyclage Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux de chèvres Greffage (chimie) Retannage Styrène Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Collagen extracted from leather wastes was used as the main raw material, a modified protein retanning agent was prepared by free radical polymerization reaction with butyl acrylate and styrene. The product was characterized by FT-IR, TEM, particle size analysis and other methods. The retanning properties were studied on goat garment leather. The results showed that grafting took place between collagen and the non-ionic monomers. The grafting rate was about 65%. The latex particles of the modified collagen cross-linking emulsion were spherical and uniform, the average particle size was about 117nm. The resistances of the product to electrolyte, acid and alkali were good. The thickening rate [substance increase] of the leather was about 10% when using the retanning agent. The leather has good resistance to wet and dry rubbing after retanning, the fixing effect was remarkable. The shrinkage temperature was up to 122°C. Compared with similar commercial retanning agents, the tensile strength and tearing strength of leather retanned by the self-prepared retanning agent increased by 28.5% and 37.8%, respectively. Note de contenu : - EXPERIMENTAL PROCEDURES : Reagents and apparatus - Preparation of modified collagen retanning agent - Characterization - The application of collagen retanning agent on leather - RESULTS AND DISCUSSION : Characterization of modified collagen retanning agent - The application of collagen retanning agent in leather En ligne : https://drive.google.com/file/d/1flVupBNcHccMn5FrnO29d9kywrKG8Yky/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26447 [article]

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