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Performance of flame retardants on leather / Huang Zan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 6 (11-12/2005)
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Titre : Performance of flame retardants on leather Type de document : texte imprimé Auteurs : Huang Zan, Auteur ; Li Lixin, Auteur ; Wang Yinghong, Auteur ; Lin Yunzhou, Auteur ; Wuyong Chen, Auteur Année de publication : 2005 Article en page(s) : p. 225-231 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés physiques
Cuirs et peaux de porcs
Essais de comportement au feu
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Five flame retardants obtained as commercial products or prepared by the laboratory, including amino sulfonic ammonium [sulphamic acid], borax, ammonium polyphosphate, pentaerythritol-dihydrogenphosphate bisestermelamine and phosphated amino resin, were selected to treat wet blue pig. A unified treatment process was used with type and dosage of flame retardant as the two running parameters. The flammability of the leather was tested by two methods - vertical flame test (ALCA Method E 50) and oxygen index test method (ASTM D 2863-74). Besides the fire-safety characteristics, other physical and mechanical properties of leather samples, such as tensile strength, tear strength, breaking stretch [elongation], thickness, Ts, etc. were also evaluated. The results indicate that all of the above flame retardants can enhance the flame resistance of leather.
According to the oxygen index (OI) value of the leather samples treated with different flame retardants (12%), the performance of flame retardants on leather can be ranked as : ammonium polyphosphate > borax > phosphated amino resin > pentaerythritol-dihydrogenphosphate bisester-melamine > amino sulfonic ammonium [sulphamic acid]. The results of vertical flammability test indicate that all the tested flame-retardant chemicals can improve the fire resistance of leather and that, ammonium polyphosphate is the best flame retardant at the dosage of 12%. The results of the mechanical properties tests show that all these chemicals, except pentaerythritoldihydrogenphosphate bisester-melamine, have an influence on the leather’s thickness, handle and grain condition and reduce the strength of the leather to a greater or lesser extent.Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Preparation of leather samples - Oxygen Index Test - Vertical Flame Test - Determination of other Properties
- RESULTS AND DISCUSSION : Absorption of flame retardant - Flammability - Vertical flame test - Influence of flame retardants on leather’s thickness - Influence of flame-retardant chemicals on other properties of leather
- Table 1 : Absorption of flame retardants with different dosage
- Table 2 : Flame retardant effects of the chemicals
- Table 3 : Vertical flame test results of chemicals at the dosage of 12%
- Table 4 : Properties of leather samples treated by flame retardants at dosage of 12%En ligne : https://drive.google.com/file/d/1eoQTAMhnLewNbicJQ6AQ08Fmnz0m31h2/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39211
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 6 (11-12/2005) . - p. 225-231[article]Preparation and characterization of collagen-tio2 nanocomposite improved by glutaraldehyde / Zhou Nan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 5 (09-10/2006)
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Titre : Preparation and characterization of collagen-tio2 nanocomposite improved by glutaraldehyde Type de document : texte imprimé Auteurs : Zhou Nan, Auteur ; Wuyong Chen, Auteur ; Li Shengli, Auteur ; Gu Haibin, Auteur ; Lin Yunzhou, Auteur ; Jia Lirong, Auteur Année de publication : 2006 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens
Caractérisation
Collagène
Cuirs et peaux -- Propriétés mécaniques
Dioxyde de titane
Glutaraldéhyde
Matériaux hybrides
Nanoparticules
pH
Stabilité hydrothermaleIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Previous work from this laboratory has demonstrated that a collagen-TiO2 nanocomposite could be prepared via a sol-gel procedure. However, the shrinkage temperature produced by this kind of nanocomposite is low. In this experiment, the collagen-TiO2 nanocomposite was improved by adding glutaraldehyde and increasing the pH level. Results show that the optimum amount of glutaraldehyde is 6% (based on pickled pelt weight), and the optimal pH level for preparation is 3.5. These conditions raise the shrinkage temperature of the nanocomposite from 73.8°C to 82.2°C.
Scanning Electron Micrographs (SEM) images indicate that the collagen fibril has been wrapped with nanoparticles. Meanwhile, results from Atomic Force Microscopy (AFM) suggest that nano-TiO2 with a particle size of 40nm can be formed in-situ in the collagen. Further experiments demonstrated that the introduction of nanoparticles endows the nanocomposite with antibacterial activity.Note de contenu : - EXPERIMENTAL PROCEDURES : Preparation of nano-TiO2 precursor solution - Preparation of collagen - Preparation of collagen-TiO2 nanocomposite - Determination of hydrothermal stability and mechanical properties - SEM and AFM analyses - Determination of antibacterial ability
- RESULTS AND DISCUSSION : Effect of glutaraldehyde on hydrothermal stability of nanocomposite - Effect of pH on hydrothermal stability of nanocomposite
- PERFORMANCE ANALYSIS OF NANOCOMPOSITE : Hydrothermal stability and mechanical properties - Scanning Electron Micrographs (SEM) Analysis - Atomic Force Microscope (AFM) Analysis - Antibacterial Activity
- Table 1 : Hydrothermal stability and mechanical properties
- Table 2 : The diameters of mould inhibition zones of samples (mm)En ligne : https://drive.google.com/file/d/1YMkuoB2rPmy6utuVddKuLwqEC_MsuvsT/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39056
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 5 (09-10/2006)[article]