Organic fluorosilicone modified polyacrylate emulsion finishing agent / Sui Zhihui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 4 (07-08/2019)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 4 (07-08/2019) . - p. 208-212 Titre : Organic fluorosilicone modified polyacrylate emulsion finishing agent Type de document : texte imprimé Auteurs : Sui Zhihui, Auteur ; San Jinglong, Auteur ; Wang Xu, Auteur ; Zu Bin, Auteur ; Cao Xiangyu, Auteur ; Qiang Xihuai, Auteur Année de publication : 2019 Article en page(s) : p. 208-212 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymères Cuirs et peaux -- Finition Fluoropolymères Hydrophobie Latex Polyacrylates Polymères en émulsion Polymérisation en émulsion Résistance thermique Revêtements antisalissures Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In order to improve the hydrophobicity and applied properties of leather products, 3- (Trimethoxysilyl)propyl methacrylate (KH-570) and Dodecafluoroheptyl methacrylate (G04) were used as modified monomers preparing a fluorosilicone polyacrylate leather finishing agent by semi-continuous seed emulsion polymerisation. The structure of the prepared latex film was characterised and analysed by FTIR and XPS. The effects of the addition of silicone monomer on the latex film and the application properties were investigated by SEM and TG. The results showed that: both the organic fluorine and the silicone monomers participated in the polymerisation, and the particle size of the emulsion was 50-70nm. XPS showed that the fluorine and silicon elements in the film-air interface were 1.74% and 3.12% higher than the theoretical values. SEM showed that the surface microstructure of the latex film of the fluorosilicone copolymer emulsion was relatively rough, and the roughness was helpful to further improve the hydrophobicity and antifouling property of the finished leather. TG showed that, after the addition of silicone monomer, the heat resistance of the film was obviously improved. Compared with fluorinated polyacrylate emulsion, the contact angle of the leather sample finished by organo fluorosilicone polyacrylate emulsion to water increased about 7°. The applied properties of the finished leather were also improved. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of fluorosilicone polyacrylate - Finishing technology of leather - FTIR characterisation of polymer film - Testing of emulsion particle size - XPS analysis of latex film surface - SEM analysis of latex film - TG analysis of latex film - Contact angle of finished leather to water - Testing of the finished leather applied properties - RESULTS AND DISCUSSION : FTIR analysis of latex film - XPS analysis of latex film - Scanning electron microscopy of latex film - Measurement of contact angle of leather to water - Testing of the finished leather applied properties En ligne : https://drive.google.com/file/d/1Au_o7I11Y6vnpVSH9P51Ieebo4ZKsFs1/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32801 [article]

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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]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 1 (01-02/2023) . - p. 1-4 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 Polyuréthanes Index. 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 leather En ligne : https://drive.google.com/file/d/1d_WJZIXs1zK5qGap1DDngHkVOX0uhsbX/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38866 [article]

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