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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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Titre : High performance leathers with special properties Type de document : texte imprimé Année de publication : 2001 Article en page(s) : p. 29-30 Langues : Anglais (eng) Catégories : Antibactériens
Cuirs et peaux -- Propriétés mécaniques
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Matériaux hautes performances
Résistance à l'abrasionIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Research and development has expanded the properties of specific leathers beyond normally expected levels. This means that better performance can be provided to consumer goods when using these leathers in construction, and that expansion into new applications has been made possible. Note de contenu : - New abrasion resistant leathers
- Anti-bacterial properties
- Flame retardant leathers
- Fig. Flame retardant leathersEn ligne : https://drive.google.com/file/d/169v5gLvMnaVvDIP-yDkPpukXQbs_ZO9F/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32183
in WORLD LEATHER > Vol. 14, N° 7 (11/2001) . - p. 29-30[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006174 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : High performance splits Type de document : texte imprimé Auteurs : Karl Flowers, Auteur Année de publication : 2020 Article en page(s) : p. 40-44 Langues : Anglais (eng) Catégories : Adhésion
Anisotropie
Cuirs et peaux -- Finition
Enduction
Essais de pelage
Résistance à la déchirureIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : To be able to reduce cost in the automotive or furniture upholstery trim, manufacturers are often inclined to use coated or finished splits in the panels that are partially or fully hidden. The flesh split, spearated at the liming stage or the tanned stage, is processed with the intention of being used as high-performance split. The dyed crust split is then roller ans spray finished as a finishde split. Alternatively, a transfer/foil coating (coated split) is used on a surface that will become the new 'grain' surface. If the split is to be finished, a pre-ground and grounding coat may need to be applied first. The pre-ground,or ground, coat takes the role of helpming adhesion, binding the nap down, filing the 'grain', and ensuring consistency of absorbency.
The main physical properties that a high-performance split must have include :
- High tear strength
- Emboss retention
- Surface and nap cleanliness
- No organge peel
- Good finish adhesion
- Tear strength
The side that ends up being the 'grain side' is decided by the tanner and is decided by the cleanliness and the thickness of the split. For normal thickness leathers, the fibre strength increases as one moves from the grain through the bulk of the corium (to a peak) and then decreases into the flesh, due to the fibre size and angle of weave. The angle of weave is lower in the flesh and grain, overall, and the fibre diameter is smaller than the corium fibres.Note de contenu : - Fig. 1 : The anisotropic influence of the hide structure on tear strength
- Fig. 2 : Emboss retention
- Fig. 3 : The smoothness and cleanliness of nap required for high-performance coatings
- Fig. 4 : The finish adhesion test, also known as the peel test
- Emboss retention
- Cleanliness and finish adhesionEn ligne : https://drive.google.com/file/d/1fHSS0KFHQEt6pWj6IbyzyhkUCdzoLxS9/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34089
in INTERNATIONAL LEATHER MAKER (ILM) > N° 41 (05-06/2020) . - p. 40-44[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21717 - Périodique Bibliothèque principale Documentaires Disponible High performance strain sensor based on leather activated by micro-cracking conductive layer / Jianzhong Ma in COLLAGEN AND LEATHER, Vol. 5 (2023)
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Titre : High performance strain sensor based on leather activated by micro-cracking conductive layer Type de document : texte imprimé Auteurs : Jianzhong Ma, Auteur ; Zhijie Cheng, Auteur ; Sha Tan, Auteur ; Tian Zheng, Auteur ; Yan Zong, Auteur Année de publication : 2023 Article en page(s) : 12 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Capteurs de contraintes
Cuir
Hydroxydes doubles lamellaires
Nanotubes de carbone à parois multiplesUn nanotube de carbone multifeuillet est constitué de plusieurs feuillets de graphènes enroulés les uns autour des autres. Il existe deux modèles pour décrire la structure des nanotubes multifeuillets :
- le modèle poupée russe: les plans de graphène sont arrangés en cylindres concentriques ;
- le modèle parchemin: un seul feuillet de graphène est enroulé sur lui-même, comme une feuille de papier.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Flexible strain sensors are capable to detect external force induced strain change owing to their unique ability to convert deformation into electrical signals. Generally, micro/nano patterning of conductive layer in strain sensor is an effective method to improve its sensitivity, however the sophisticated manipulation process is limited only in laboratory scale. In this report, a simple and scalable fabrication strategy was used to create micro-cracking conductive layer as an alternative patterning method to achieve high performance of strain sensor. In details, the sensor was fabricated using leather as the substrate to filtrated acidified multi-walled carbon nanotubes (a-MWCNTs)/layered double hydroxides (LDHs) suspension. During stretching process, micro-cracking structure emerged on the percolated a-MWCNTs/LDHs layer, causing a rise up of resistance according to increasing strain and generated a detectable electrical signal. The prepared sensor had a large detecting range (60%), high sensitivity (GF of 7238.92 at strain 30–60%), fast response (tensile response time of 270 ms), good stability and repeatability. The sensor also inherited the advantages of leather, such as biodegradability and good air permeability, and the introduction of a-MWCNTs/LDHs further enhanced its fire retardancy properties. These features ensured the sensor as an eco-friendly, comfortable and safe electronic device for human motion detection. Note de contenu : - EXPERIMENTAL SECTION : Materials - Preparation of a-MWCNTs - Preparation of a-MWCNTs/LDHs suspensions - Preparation of the a-MWCNTs/LDHs/leather sensors - Characterization
- RESULTS AND DISCUSSION : Fabrication of a-MWCNTs/LDHs/leather composite sensor - Morphologies and structures of a-MWCNTs, LDHs, a-MWCNTs/LDHs and a-MWCNTs/LDHs/leather - Sensing performance of a-MWCNTs/LDHs/leather composite sensors - Flame retardant properties of a-MWCNTs/LDHs/leather composites - Hygienic and mechanical properties of a-MWCNTs/LDHs/leather composites
- Table 1 : Vertical burning test of leather and leather based compositesDOI : https://doi.org/10.1186/s42825-023-00134-6 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-023-00134-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40074
in COLLAGEN AND LEATHER > Vol. 5 (2023) . - 12 p.[article]High quality biodiesel and glycerin from fleshings / Jiri Pecha in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 10 (10/2012)
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Titre : High quality biodiesel and glycerin from fleshings Type de document : texte imprimé Auteurs : Jiri Pecha, Auteur ; Karel Kolomaznik, Auteur ; Michaela Barinova, Auteur ; Lubomir Sanek, Auteur Année de publication : 2012 Article en page(s) : p. 312-322 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biocarburants
Cuirs et peaux -- Déchets -- Recyclage
Echarnage
GlycérineLe glycérol, ou glycérine, est un composé chimique de formule HOH2C–CHOH–CH2OH. C'est un liquide incolore, visqueux et inodore au goût sucré, utilisé dans de nombreuses compositions pharmaceutiques. Sa molécule possède trois hydroxyles correspondant à trois fonctions alcool responsables de sa solubilité dans l'eau et de sa nature hygroscopique. Un résidu glycérol constitue l'articulation centrale de tous les lipides de la classe des triglycérides et des phosphoglycérides.
PROPRIETES PHYSIQUES : Le glycérol se présente sous la forme d'un liquide transparent, visqueux, incolore, inodore, faiblement toxique si ingéré (mais laxatif à haute dose), au goût sucré.
Le glycérol peut se dissoudre dans les solvants polaires grâce à ses trois groupes hydroxyles. Il est miscible dans l'eau et l'éthanol ; et insoluble dans le benzène, le chloroforme et le tétrachlorométhane.
Son affinité avec l'eau le rend également hygroscopique, et du glycérol mal conservé (hors dessicateur ou mal fermé) se dilue en absorbant l'humidité de l'air.
- PROPRIETES CHIMIQUES : Dans les organismes vivants, le glycérol est un composant important des glycérides (graisses et huiles) et des phospholipides. Quand le corps utilise les graisses stockées comme source d'énergie, du glycérol et des acides gras sont libérés dans le sang.
- DESHYDRATATION : La déshydratation du glycérol est faite à chaud, en présence d'hydrogénosulfite de potassium (KHSO3) et produit de l'acroléine
- ESTERIFICATION : L'estérification du glycérol conduit à des (mono, di ou tri) glycérides.
- AUTRES PROPRIETES : Le glycérol a un goût sucré de puissance moitié moindre que le saccharose, son pouvoir sucrant est de 0,56-0,64 à poids égal13.
Le glycérol a des propriétés laxatives et diurétiques faibles.
Comme d'autres composés chimiques, tels que le benzène, son indice de réfraction (1,47) est proche de celui du verre commun (~1,50), permettant de rendre "invisibles" des objets en verre qui y seraient plongés.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Animal fleshings represent more than 50% of the total waste generated by the leather industry. Generally, the fleshings represent undesirable waste the elimination of which is often connected with expenses. However, this waste contains valuable protein and fat fractions. For this reason, a complex procedure for separation and utilization of both fractions was suggested. The method involves sodium chloride removal with subsequent protein and fat separation. The proposed desalting operation facilitated significant reduction of ash content and consequently the obtained protein fraction has acceptable properties for commercial application. A mathematical model of this process was worked out. The model enables to find the optimal conditions at which the practical desalting should be carried out. The obtained fat is deacidified and the resulting quality product is suitable for direct biodiesel production. The analyses of the prepared biodiesel confirmed high conversion of transesterification reaction and thus optimal purity of the feedstock. Even the sulfur content which could be an issue in fleshings utilization for biodiesel production was low enough to meet the biodiesel standard of quality EN 14 214. Note de contenu : - Materials
- Analytical methods
- Protein separation without prior desalting
- Desalting and protein separation
- Biodiesel synthesis from refined fatPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15933
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVII, N° 10 (10/2012) . - p. 312-322[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14184 - Périodique Bibliothèque principale Documentaires Disponible High stability organic tanning using plant polyphenols. Part 1 / Anthony D. Covington in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 82, N° 2 (03-04/1998)
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Titre : High stability organic tanning using plant polyphenols. Part 1 : The interactions between vegetable tannins and aldehydic crosslinkers Type de document : texte imprimé Auteurs : Anthony D. Covington, Auteur ; Bi Shi, Auteur Année de publication : 1998 Article en page(s) : p. 64-71 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This new tannage is based on natural products, the plant polyphenols or vegetable tannins. The chemistry applies only to the condensed or catechol tannins, because it involves crosslinking the flavonoid ring system. The preferred vegetable tannin is mimosa, in which the presence of pyrogallol groups appears to aid the reaction. The preferred crosslinker is oxazolidine. High shrinkage temperature is achieved by heating to 60° to drive the reaction ; note, the pH requirements for fixing the two components of the tannage are mutually exclusive. Shrinkage temperatures > 110° are easily achieved. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7867
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 82, N° 2 (03-04/1998) . - p. 64-71[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007021 - Périodique Bibliothèque principale Documentaires Disponible High stability organic tanning using plant polyphenols. Part 2 / Bi Shi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 83, N° 1 (01-02/1999)
PermalinkHigh-strength collagen biomaterials / Kenneth E. Hughes in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIII (Année 1988)
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PermalinkHistological analysis of the skin dermal components in bovine hides stored under different conditions / S. Montelli in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 2 (02/2015)
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PermalinkHistological structure of hides and crossbreeds by italian beef breed bulls and the physical properties of the leather / Piotr Zapletal in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 80, N° 4 (07-08/1996)
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PermalinkL'histologie : une certaine forme de la connaissance de la peau / J. Prévot in TECHNICUIR, N° 7 (08-09/1973)
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PermalinkHistology of cockle lesions on new zealand lamb skins / George Halligan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), LXXXVII, N° 2 (02/1992)
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PermalinkHomogeneous Zr and Ti co-doped SBA-15 with high specific surface area : preparation, characterization and application / Qiang Taotao in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
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PermalinkPermalinkPermalinkHow much Cr(VI) is formed during extraction of leather with phospahte buffer ? / Dipankar Chaudhuri in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIX, N° 3 (03/2004)
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PermalinkHow raman spectroscopy can be used to examine the structural changes caused by certain penicillium species on chrome-tanned leather / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 2 (02/2011)
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PermalinkHow Stahl is driving sustainability in the beamhouse in INTERNATIONAL LEATHER MAKER (ILM), N° 36 (07-08/2019)
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PermalinkHow to improve draw and layout in every stage of beamhouse processing / Korshed Alam in INTERNATIONAL LEATHER MAKER (ILM), N° 44 (11-12/2020)
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PermalinkPermalinkPermalinkHow to test for benzidine dyes in dye mixture / Alois Püntener in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 77, N° 1 (01-02/1993)
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PermalinkHPLC versus spectrophotometry for the quantitation of trace amounts of formaldehyde in leathers / Nicolas Blanc in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 1 (01/2009)
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PermalinkHumic acid derivatives as tanning and retanning agents / Anna Bacardit in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 2 (03-04/2012)
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PermalinkHydothermal isometric tension apparatus and its application to the study of thermal stability of preserved red deer skin / P. Hanacziwskyj in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 73 (Année 1989)
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