![](./images/home.jpg)
![](./images/bar_spacer.gif)
Détail de l'auteur
Auteur Li Zeyang |
Documents disponibles écrits par cet auteur
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
![](./images/orderby_az.gif)
Organic fluorosilicone modified waterborne polyurethane leather finishing agent / Zhao Wenjing in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 1 (01-02/2023)
![]()
[article]
Titre : Organic fluorosilicone modified waterborne polyurethane leather finishing agent Type de document : texte imprimé Auteurs : Zhao Wenjing, Auteur ; Sui Zhihui, Auteur ; Qi Zhang, Auteur ; Deng Lihua, Auteur ; Li Zeyang, Auteur ; Zu Bin, Auteur Année de publication : 2023 Article en page(s) : p. 1-4 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Cuirs et peaux -- Finition
Douceur (toucher)
Fluorosilicones
Granulométrie
Hydrophobie
Polymères en émulsion
Polymérisation en émulsion
PolyuréthanesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In order to improve the hydrophobicity and softness of leather, a fluoro-silicon-modified waterborne polyurethane (FSiWPU) leather finishing agent was prepared by emulsion polymerisation using 1H,1H,2H,2H-Nonafluoro-1-hexanol (F9) and N-(2-aminoethyl) -3-aminopropyl trimethoxy silane (KH-792) as modified monomers. The structure of the latex film and the film was characterised by FTIR, XRD and UV. The effects of F9 and KH-792 on the properties of the film was investigated. The water contact angle and application properties of the coated leather were tested. FTIR and XRD showed that F9 and KH-792 were successfully introduced into the main chain of waterborne polyurethane. The particle size of the modified composite emulsion was 106nm; the UV transmittance of the composite emulsion was significantly reduced compared to pure aqueous polyurethane. The water contact angle of the leather finished with the composite emulsion was 111° Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of fluorosilicone waterborne polyurethane emulsion - Finishing technology of leather - Fourier transform infrared spectra (FTIR) analysis - XRD analysis of emulsion - Particle size analysis of emulsion - UV analysis of emulsion - Contact angle of finished leather to water - Testing of the finished leather applied properties
- RESULTS AND DISCUSSION : FTIR analysis - Emulsion particle size distribution test - Testing of the finished leather's applied performance
- Table 1 : Application performance of the finished leatherEn ligne : https://drive.google.com/file/d/1d_WJZIXs1zK5qGap1DDngHkVOX0uhsbX/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38866
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 1 (01-02/2023) . - p. 1-4[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 23893 - Périodique Bibliothèque principale Documentaires Disponible Preparation and properties of corn starch/polyacrylate emulsion finishing agent / Li Zeyang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 108, N° 3 (05-06/2024)
[article]
Titre : Preparation and properties of corn starch/polyacrylate emulsion finishing agent Type de document : texte imprimé Auteurs : Li Zeyang, Auteur ; Sui Zhihui, Auteur ; Zhang QI, Auteur ; Deng Lihua, Auteur ; Cao Xiangyu, Auteur ; Fang Hu, Auteur Année de publication : 2024 Article en page(s) : p. 122-126 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylate de butyle
Amidons
Caractérisation
Chimie analytique
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 -- Finition
Emulsions
Maïs et constituants
Méthacrylate de méthyle
PolyacrylatesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Corn starch modified polyacrylate emulsion was prepared by semi-continuous seed emulsion polymerization with methyl methacrylate (MMA), butyl acrylate (BA) and oxidized starch (OSt) as the main raw materials and was subsequently used for leather finishing. The structure of starch/polyacrylate emulsion film was characterized by FT-IR, XPS and 1HNMR and the properties of leather coated with the emulsion were tested. The results showed that after corn starch was oxidized, the oxidized starch reacted with acrylate monomers, and the polyacrylate emulsion modified using oxidized starch was successfully prepared. Compared with a polyacrylate emulsion, the particle size distribution of modified composite emulsion is more concentrated. After finishing with polyacrylate emulsion containing oxidized starch, the leather was folded 20,000 times without developing cracks; In the wear resistance test, the gray scale of dry-wiped interlining cloth increased from 4.0 to 5.0, and the gray scale of wet-wiped interlining cloth increased from 3.5 to 4.5 ; The softness increased from 4.35 mm to the highest value at 5.23 mm; The tensile strength increased from 523N to 581N; The yellowing resistance is also obviously improved. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of oxidized starch - Preparation of polyacrylate emulsion containing oxidized starch - Particle size analysis of emulsion - FTIR characterization of latex film - XPS characterization of latex film - 1H-NMR analysis - Testing of the crust leather applied performance
- RESULTS AND DISSCUSION : FT-IR analysis - XPS analysis - 1HNMR analysis - Particle size distribution test of emulsion - Testing of the crust leather’s applied performance
- Table 1 : Element content on the surface of latex film
- Table 2 : Test of latex film performance
- Table 3 : Testing of the finished leather applied performancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41137
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 108, N° 3 (05-06/2024) . - p. 122-126[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité - - Périodique Bibliothèque principale Documentaires Disponible