![](./images/home.jpg)
![](./images/bar_spacer.gif)
Catégories
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
Etendre la recherche sur niveau(x) vers le bas
Dynamic light scattering and zeta potential of a leather finishing system / Xia Yan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 1 (01-02/2012)
![]()
[article]
Titre : Dynamic light scattering and zeta potential of a leather finishing system Type de document : texte imprimé Auteurs : Xia Yan, Auteur ; Zhao Pengxiang, Auteur ; Wuyong Chen, Auteur Année de publication : 2012 Article en page(s) : p. 32-36 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants
Cuirs et peaux -- Finition
Polyacryliques
Polymères en émulsion
Polyuréthanes
Potentiel zeta
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Finishing is one of the significant steps in the process by which the tanning industry transforms leather into an end-product. Therefore, a deep study of the finishing system is necessary to help the control of this step and bring innovation to the finishing process. Based on principles of dynamic light scattering (DLS) and zeta potential, the stability of a leather finishing system was investigated. Polyrethane and acrylic resin were used to prepare a single finishing system and wax emulsion, silicone oil and pigment paste were added to the single finishing system to make three binary finishing systems, then a ternary system was prepared by adding was emulsion and silicone oil to the single finishing system.
The particle size and zeta potential of the single, binary and ternary finishing systems were characterized using the zetasizer nano-ZS (Malvern Instruments Ltd., UK). The results showed that the stability of the finishing system was not affected with the addition of was emulsion and silicone oil, because the zeta potential was always greater than 30mv, however ; a significant decrease of zeta potential was observed due to the addition of pigment to the finishing system, which indicates a decrease of the finishing system's stability. The results provide a comprehensive and theoretical understanding of the interactions among materials in a finishing system.Note de contenu : - EXPERIMENTALE PROCEDURE : Materials - Preparationof samples for the test of particle size and zeta potential - Measurement of particle size distribution and zeta potential of finishing system
- RESULTS AND DISCUSSION : Particle size distribution - Zeta potential of finishing systemEn ligne : https://drive.google.com/file/d/1sLX_CMIVNamg502Rrvg4YI-sRkBuUw3j/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13552
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 96, N° 1 (01-02/2012) . - p. 32-36[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 13659 - Périodique Bibliothèque principale Documentaires Disponible Eco friendly automotive leather concept / Florian Schrey in LEATHER INTERNATIONAL, Vol. 215, N° 4836 (11-12/2013)
![]()
[article]
Titre : Eco friendly automotive leather concept Type de document : texte imprimé Auteurs : Florian Schrey, Auteur Année de publication : 2013 Article en page(s) : p. 6 Langues : Anglais (eng) Catégories : Cuir dans les automobiles
Cuirs et peaux -- Finition
Liants
Polyacryliques
Polyuréthanes
Tannage végétalIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : On the finishing Bide in-house GST/Seton tannery we were facing other challenges.
Using only natural binders is limiting the wear properties. We were looking for a sensitive mix of natural binders together with high tech PUs and Acrylics to get the best performances in using as little finish as possible and having as little coverage as possible. The amount applied is about hall of today's automotive semi-aniline.
The result of this development is a smooth yet firm leather article, which has a rich and round body. Natural characteristics such as growth marks or neck wrinkles are a part of this article and get blended in with the finish we use.
Due to very compact lead-in processes and run Urne optimised recipes in production for ECO¬Line leathers, we were able to achieve a further reduction on "high/brand marks" like water and electricity consumption on these leathers.
Corinova, with its characteristics, reminds us of the classic vegetable-tanned ultra luxury vachette leathers that are used for leather goods. Each hide is unique, which is a sign of authenticity and supports the idea of individualisation. The leathers can currently be produced in black and dark brown shades.
In the development of GST/Seton — Corinova, we have created a superior eco-friendly product. The environment matters and leather can be one of the first consumer choices if produced in an eco-friendly manner.En ligne : https://drive.google.com/file/d/1ZyRGpO2JsDpVpEktYqlFPDJZN64ZIQvJ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20448
in LEATHER INTERNATIONAL > Vol. 215, N° 4836 (11-12/2013) . - p. 6[article]Réservation
Réserver ce document
Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 15842 - Périodique Bibliothèque principale Documentaires Disponible 15880 - Périodique Bibliothèque principale Documentaires Disponible Eco-friendly protective coatings based on poly(urethane sulfone amide) dispersions for carbon steel / H. A. Mohamed in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 2 (03/2017)
![]()
[article]
Titre : Eco-friendly protective coatings based on poly(urethane sulfone amide) dispersions for carbon steel Type de document : texte imprimé Auteurs : H. A. Mohamed, Auteur ; S. M. M. Morsi, Auteur ; B. M. Badran, Auteur ; A. M. Rabie, Auteur Année de publication : 2017 Article en page(s) : p. 437-446 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone
Anticorrosifs
Anticorrosion
Copolymère uréthane sulfone amide
Dispersions et suspensions
Métaux -- Revêtements protecteurs
PolyuréthanesIndex. décimale : 667.9 Revêtements et enduits Résumé : Eight eco-friendly protective coatings (PU, PUA1, PUA3, PUA5, T30PUA5, T60PUA5, T90PUA5, and T120PUA5), were formulated based on series of laboratory-synthesized poly(urethane co-sulfone amide) copolymer dispersions (CPDs) as binders. The first four formulations were based on CPDs prepared by the copolymerization reaction of PU based on castor oil (CO) with aromatic polyamide sulfone (APAS) in four different concentrations (0%, 1%, 3%, and 5% solid to solid). The other four formulations were based on CPDs synthesized by the copolymerization reaction of PU based on transesterified CO with triethanolamine (CON) at different time intervals (30, 60, 90, and 120 min) with APAS at only one concentration. The effect of the degree of copolymerization and transesterification reactions on the physical, chemical, and mechanical properties of the formulated coatings was studied. The results showed that the copolymerization and transesterification reactions led to an increase in the density and viscosity of the coating formulations. Additionally, the hardness of the dried films increased with copolymerization and transesterification reactions. The transesterification reaction decreased the adhesion force of the coated films. The copolymerization process caused a decrease in the water uptake of the coated films. However, the transesterification reaction increased the water uptake. The prepared formulations were applied on carbon steel substrates to estimate their efficiency as eco-friendly protective coatings for steel. The weight loss of the coated steel panels decreased with an increase in the amount of the copolymerized APAS within the PU chains, while it increased with an increase in the transesterification time of the CON used in the preparation of the coated copolymers. From the corrosion test results, PUA5 and T30PUA5 showed the best anticorrosive performance as estimated from the degree of rusting, weight loss measurements, and failure at scribe. DOI : 10.1007/s11998-016-9861-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9861-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28158
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 2 (03/2017) . - p. 437-446[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 18781 - Périodique Bibliothèque principale Documentaires Disponible Effect of acid groups in hydroxyl functional resins on the properties of polyester-urethane powder coating / Bin Wu in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 906 (07/2000)
[article]
Titre : Effect of acid groups in hydroxyl functional resins on the properties of polyester-urethane powder coating Type de document : texte imprimé Auteurs : Bin Wu, Auteur ; Sanjay Padaki, Auteur Année de publication : 2000 Article en page(s) : p. 55-62 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acidité
Couches minces
Essais de brouillard salin
Formulation (Génie chimique)
Groupement carboxyle
HydroxyleEn chimie organique, un hydroxyle (ou oxhydryle) peut désigner deux entités.
Un groupement -OH, appelé aussi hydroxy, qui se rencontre en particulier dans les alcools et les phénols.
Un radical : HO^{\bullet}. Il est produit par exemple lors de réactions de dissociation de peroxydes, en présence d'ions de métaux de transition (Fe(II), Cu(I), réaction de Fenton), de chauffage ou de rayonnement.
Liants
Polyesters
Polyuréthanes
Résistance aux conditions climatiques
Réticulation (polymérisation)
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements poudre:Peinture poudreIndex. décimale : 667.9 Revêtements et enduits Résumé : Hydroxyl-terminated polyester resins with different acid numbers were synthesized and used in powder coating formulations. Coatings were formulated with isophorone diisocyanate (IPDI)-based hardeners and tested for mechanical performance, appearance, and weathering. This study found that resins containing a high concentration of residual acid groups (also referred to as undercondensed resins) had to be formulated according to their total reactive number, the sum of acid and hydroxyl numbers, in order to achieve complete cure. High acid numbers also caused poor overbake and salt spray resistance. The addition of adipic or benzoic acids to the powder formulation accelerated cure. Note de contenu : - RESULTS AND DISCUSSION: Resins - Powder formulation - Curing chemistry - Effect of AN and crosslinker stoichiometry on curing - Acid catalysis - Effect of residual acid groups on coating properties - Overbake resistance - Salt fog testing (ASTM B 117) - Curing residual carboxyl groups Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17986
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 72, N° 906 (07/2000) . - p. 55-62[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001211 - Périodique Bibliothèque principale Documentaires Disponible Effect of cardanol diol on the synthesis, characterization, and film properties of aqueous polyurethane dispersions / Kattimuttathu I. Suresh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 4 (07/2014)
![]()
[article]
Titre : Effect of cardanol diol on the synthesis, characterization, and film properties of aqueous polyurethane dispersions Type de document : texte imprimé Auteurs : Kattimuttathu I. Suresh, Auteur ; M. G. Harikrishnan, Auteur Année de publication : 2014 Article en page(s) : p. 619-629 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact
Caractérisation
Cardanol
Granulométrie
Morphologie (matériaux)
Polymères en émulsion
Polyols
Polyuréthanes
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés thermiques
Taille des particules
ViscoélasticitéIndex. décimale : 667.9 Revêtements et enduits Résumé : This article reports on the effect of a diol prepared from a renewable resource, cardanol, on the synthesis, film formation and film properties of aqueous polyurethane dispersions. The PU dispersions were prepared by the acetone process from poly(tetramethylene ether)glycol (PTMEG) and isophorone diisocyanate (IPDI) prepolymer at constant NCO/OH ratio of 1:1.1. Dispersions with two different concentrations of cardanol diol (OH value 140 mg KOH/g) were prepared through chain extension and characterized for solid content, particle size, and particle-size distribution (PSD). Free films were prepared by casting and were studied for their thermal, mechanical, viscoelastic, and hydrophobic properties. Due to the broad PSD, the dispersions containing cardanol diol exhibit better film formation property in comparison to the butane diol chain-extended PU. Soft and flexible films were obtained using cardanol diol as chain extender, whereas brittle film was obtained with butane diol chain extender. Morphological characterization using atomic force microscopy (AFM) and scanning electron microscopy (SEM) suggests a heterogeneous and amorphous nature of the polyurethanes-containing cardanol diol. The thermomechanical and viscoelastic properties show that incorporation of cardanol diol decreases the glass transition temperature and modulus of the films but enhances the properties like thermal stability, hydrophobicity, elongation, etc., of the polyurethane films. Note de contenu : - EXPERIMENTAL : Materials - preparation of cardanol diol - Synthesis of polyurethane dispersion - Preparation of PU films - Characterizations
- RESULTS AND DISCUSSION : Synthesis and characterization of PU dispersions - Particle size and particle-size distribution (PSD) - Mechanical properties - Contact angle measurements - Film morphology - Thermogravimetric analysisDOI : 10.1007/s11998-014-9571-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9571-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21722
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 4 (07/2014) . - p. 619-629[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 16424 - Périodique Bibliothèque principale Documentaires Disponible Effect of finishing auxiliaries on permeability of leathers / Murali Sathish in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 11 (11/2015)
![]()
PermalinkEffect of free monomer TDI content in the hardener on properties of the 2K PU coatings / Sameer Kapole in PAINTINDIA, Vol. LXII, N° 8 (08/2012)
PermalinkEffect of HMMM crosslinking on polyurethane dispersion based on Karanja oil / Vilas D. Athawale in PAINTINDIA, Vol. LX, N° 9 (09/2010)
PermalinkEffect of hydrophilic chain extenders on properties of hyperbranched waterborne polyurethane / Wang Xuechuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 2 (03-04/2016)
![]()
PermalinkEffect of nanosilica and Zno nanoparticles / Anabel Crespo Soler in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4608 (05/2015)
![]()
PermalinkEffect of novel synthetic clay on the property of waterborne polyurethane leather finishing agent: enhanced thermal, mechanical and UV-resistant performance / Wang Chunhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 3 (05-06/2018)
![]()
PermalinkEffect of particles sizes and pigment volume concentrations on the barrier properties of polyurethane coatings / Fuchun Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)
![]()
PermalinkEffect of polyether soft segments on structure and properties of waterborne UV-curable polyurethane nanocomposites / Shengwen Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)
![]()
PermalinkEffects of blending poly(lactic acid) and thermoplastic polyester polyurethanes on the mechanical and adhesive properties in two-component injection molding / Marco Klute in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 5 (2022)
![]()
PermalinkEffects of expanded graphite, aluminum hydroxide, and kaolin on flame retardancy and smoke suppression of polyurethane composites / Q. Cao in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 1 (2021)
![]()
PermalinkEffects of pigmentation on siloxane-polyurethane coatings and their performance as fouling-release marine coatings / Stacy A. Sommer in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 6 (11/2011)
![]()
PermalinkEfficient deflection mixheads for very small to very large outputs / Jürgen Wirth in KUNSTSTOFFE INTERNATIONAL, Vol. 105, N° 3 (03/2015)
![]()
PermalinkElastic meltblown nonwovens with high functionality and memory effect in CHEMICAL FIBERS INTERNATIONAL, Vol. 72, N° 3 (09/2022)
![]()
PermalinkL'élastomère PUR est " fort comme l'acier " / Peter Plate in CAOUTCHOUCS & PLASTIQUES, N° 813 (05/2003)
PermalinkEmerging research trends in the field of polyurethane and its nanocomposites : Chemistry, Synthesis, Characterization, Application in coatings and Future perspectives / Swati Jakhmola in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
![]()
Permalink