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[article]
Titre : Changing perspectives : How legislation is affecting the development of epoxy paints Type de document : texte imprimé Auteurs : Martin Gerlitz, Auteur Année de publication : 2018 Article en page(s) : p. 18-24 Langues : Anglais (eng) Catégories : Amines Une amine est un composé organique dérivé de l'ammoniac dont certains hydrogènes ont été remplacés par un groupement carboné. Si l'un des carbones liés à l'atome d'azote fait partie d'un groupement carbonyle, la molécule appartient à la famille des amides. Découvertes en 1849, par Wurtz les amines furent initialement appelées alcaloïdes artificiels.
On parle d'amine primaire, secondaire ou tertiaire selon que l'on a un, deux ou trois hydrogènes substitués.
Par exemple, la triméthylamine est une amine tertiaire, de formule N(CH3)3.
Typiquement, les amines sont obtenues par alkylation d'amines de rang inférieur. En alkylant l'ammoniac, on obtient des amines primaires, qui peuvent être alkylées en amines secondaires puis amines tertiaires. L'alkylation de ces dernières permet d'obtenir des sels d'ammonium quaternaire.
D'autre méthodes existent : 1. Les amines primaires peuvent être obtenues par réduction d'un groupement azoture, 2. Les amines peuvent aussi être obtenues par la réduction d'un amide, à l'aide d'un hydrure, 3. L'amination réductrice permet l'obtention d'amines substituées à partir de composés carbonylés (aldéhydes ou cétones), 4. Les amines primaires peuvent être obtenues par la réaction de Gabriel.
Anticorrosion
Chimie industrielle -- Législation -- Pays de l'Union européenne
Coût -- Contrôle
Durée de vie (Ingénierie)
Epoxydes
Essais de brouillard salin
Polymères en émulsion
Réduction des composés organiques volatils
Réticulants
Réticulation (polymérisation)
Revêtements en phase aqueuse -- Séchage:Peinture en phase aqueuse -- Séchage
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : The development of epoxy protective coatings is increasingly being driven by legislative requirements rather than technical ones. A new REACH deadline in May 2018 will lead to some materials used in low volumes being withdrawn. Issues arising from this and technical developments which can lead to cost benefits are discussed. Note de contenu : - How tougher reach requirements drive development
- VOC reduction remains in focus
- Zero-VOC coatings demonstrate excellent performance
- Health and safety aspects of formulation development
- The many facets of total coatings cost reduction
- Low temperature ambient cure offers several benefits
- Faster cure comes at a price
- Performance gains that can generate savings
- An overview of the product development panorama
- FIGURE : Minimum film formation temperature (MFT) and pot life comparison of 2K epoxy amine systems based either on LER with reactive diluents or SER dispersions
- TABLES : 1. Salt spray test results of system A (liquid epoxy resin containing reactive diluents) and system B (water-borne solid epoxy resin dispersion) cured with the same water-borne amine curative – 2. Test results on water-borne systems after four years of outdoor exposure in a marine environment – 3. Comparison of different epoxy components in terms of cure speed, pot life and drying behavior – 4. Features of the main curative technologies currently used in anticorrosive epoxy paintsEn ligne : https://drive.google.com/file/d/1xrh3uGBufyYEJGkOJhLAoTXk06xhO4xM/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30195
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 2 (02/2018) . - p. 18-24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19608 - Périodique Bibliothèque principale Documentaires Disponible Changing the landscape of the coatings market / Philippe de Micheli in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 200, N° 4547 (04/2010)
[article]
Titre : Changing the landscape of the coatings market Type de document : texte imprimé Auteurs : Philippe de Micheli, Auteur Année de publication : 2010 Article en page(s) : p. 14-18 Langues : Anglais (eng) Catégories : Dispersions et suspensions
Polymères en émulsion
Polyuréthanes
Résines photoréticulables
Réticulation (polymérisation)
Revêtements -- Séchage sous rayonnement ultravioletTags : 'Substrats bois' plastiques' 'Dispersions de polyuréthanes' Emulsions 'Réticulation UV' Index. décimale : 667.9 Revêtements et enduits Résumé : Eco-friendly UV resins for wood coating technologies face changes in end-user markets for pigmented and clear systems. Note de contenu : - TECHNOLOGY SUBSTITUTION IN THE WOOD INDUSTRY
- WATER-BASED UV SYSTEMS FOR INDUSTRIAL COATING APPLICATIONS : General properties of UV PUDs / Different product profiles for different applications / Primers and self-sealing systems for wood coating / Clear topcoats for wood and plastic substrates / High gloss clear topcoats for wood and plastic substrates / Pigmented base and topcoats / Clear topcoats for outdoor applications / Clear coatings for metal substrates / Next steps in water-based UV technology.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10077
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 200, N° 4547 (04/2010) . - p. 14-18[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012360 - Périodique Bibliothèque principale Documentaires Disponible Characterization and thermal properties of polygenipin-crosslinked hide powders / Jie Liu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 4 (04/2018)
[article]
Titre : Characterization and thermal properties of polygenipin-crosslinked hide powders Type de document : texte imprimé Auteurs : Jie Liu, Auteur ; Eleanor M. Brown, Auteur ; Cheng-Kung Liu, Auteur ; Keyong Tang, Auteur Année de publication : 2018 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse thermique
Caractérisation
Couleur
Génipine
Poudre de peaux
Réticulation (polymérisation)
Stabilité thermique
ThermogravimétrieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Genipin is a naturally occurring iridoid compound, it is widely used as an ideal biological protein crosslinking agent due to its low toxicity compared to glutaraldehyde and formaldehyde. Under alkaline condition, genipin could undergo ring-opening polymerization via nucleophilic attack of hydroxyl ions followed by an aldol condensation. Because of the fact that polygenipin could create long-range intermolecular crosslinking between protein chains, preliminary investigations have been carried out to study effect of polygenipin crosslinking on color and thermal stability of hide powder by using colorimetry, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The results show that the peak denaturation temperature (Tp) for hide powders obtained from DSC increased to a maximum and then decreased with increasing of the molecular weight of polygenipin. Degree of crosslinking was evaluated, and the results suggest that thermal stability of hide powder is influenced not only by degree of crosslinking, but also by the type of crosslinking. Thermogravimetric analysis also confirms that long-range intermolecular crosslink bridges formed between collagen molecules results in more thermally stable hide powders. This study suggests that polygenipin can be potentially useful in producing eco-friendly leather. Note de contenu : - EXPERIMENTAL : Materials - Preparation of polygenipin - Preparation of the polygenipin crosslinked hide powders - Colors parameters - Degree of crosslinking (DC) - Differential scanning calorimetry (DSC) - Thermogravimetric analysis (TGA)
- RESULTS AND DISCUSSION : Characterization of polygenipin - Color parameters of polygenipin crosslinked hide powders - Degree of crosslinking - Differential scanning calorimetry - Thermogravimetric analysisEn ligne : https://drive.google.com/file/d/1Llp-sHkQH85153d8dB0r7CFGqTdROUTK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30338
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 4 (04/2018)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19772 - Périodique Bibliothèque principale Documentaires Disponible Characterization of cured-induced residual stresses / O. Klinkova in JEC COMPOSITES MAGAZINE, N° 67 (08-09/2011)
[article]
Titre : Characterization of cured-induced residual stresses Type de document : texte imprimé Auteurs : O. Klinkova, Auteur ; Sylvain Drapier, Auteur ; Jean-Michel Bergheau, Auteur Année de publication : 2011 Article en page(s) : p. 49-52 Langues : Anglais (eng) Catégories : Caractérisation
Composites à fibres de carbone -- Propriétés mécaniques
Contraintes résiduelles
Epoxydes
Matériaux -- Imprégnation
Modélisation tridimensionnelle
Réticulation (polymérisation)
Simulation par ordinateurIndex. décimale : 668.4 Plastiques, vinyles Résumé : Numerical prediction of residual stresses during composite manufacturing is essential to get a better knowledge of the process, and hence to analyze the effects of processing parameters on the mechanical integrity of the part. The objective of this research is to validate a numerical model for the manufacturing process of the T300/914 composite material. Note de contenu : - Component properties
- Manufacturing process
- Measurements
- Experimental results
- Numerical model
- Numerical resultsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17295
in JEC COMPOSITES MAGAZINE > N° 67 (08-09/2011) . - p. 49-52[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13510 - Périodique Bibliothèque principale Documentaires Disponible Characterization of fatty acid based self-crosslinking poly(urethane urea) anionomers : morphological perspective / Ashish Patel in PAINTINDIA, Vol. LXII, N° 10 (10/2012)
[article]
Titre : Characterization of fatty acid based self-crosslinking poly(urethane urea) anionomers : morphological perspective Type de document : texte imprimé Auteurs : Ashish Patel, Auteur ; Ashok Dighe, Auteur Année de publication : 2012 Article en page(s) : p. 51-62 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acides gras
Caractérisation
Copolymère uréthane-urée
Couches minces
IonomèresUn ionomère est un copolymère thermoplastique « réticulé ioniquement ». La réticulation améliore la cohésion du polymère et la conductivité électrique.
Résistance chimique
Réticulation (polymérisation)
RevêtementsIndex. décimale : 667.9 Revêtements et enduits Résumé : Fatty acid based self-crosslinking polyurethane urea (PUU) anionomers can find potential applications in coatings field due to enhanced chemical resistance properties. To optimize their performance in coatings, the molecular features that influence the microphase morphology and dynamic mechanical (DM) behavior of polymer films must be understood and exploited. In this work, comprehensive materials characterization of model PUU anionomers films with oxidative-crosslinking microstructure is addressed. For this, linoleic fatty acid based precursor (LPE) was included in polymer backbone which provides reactive sites for autooxidative polymerization. Three series of compositions were prepared with urea content of 8.4 %, 13.2 % and 18.1 % where within each series LPE content has been increasing in same proportion. Different experimental techniques like FTIR, DSC, DMA and mechanical testing were utilized to study the effect of compositional variables on the extent of phase segregation, domain structure and mechanical properties of fully cured polymer samples. The extent soft segment (SS) oxidative crosslinking had market effect on the microphase morphology and DM properties of materials of lowest urea content. Significant phase mixing was observed with evolvement of single heterogenous phase in the sample with highest LPE content. Samples with 13.2 % urea shows less sensitivity towards increased SS crosslinking in their microphase morphology change. Their mechanical and DM properties were observed to be dominated by interlocked hard domains. With higher urea content, such kind of hard segment cohesion results due to greater strength of bidenate H-bonding among urea linkages. While samples with highest % urea, were clearly found to be well microphase separated compared to other two series with highest HS interconnectivity and have marginal effect of extent of SS crosslinking on microphase separation. This study gives an insight about effect of extent of complex oxidative crosslinking on the microphase separation. This study gives an insight about effect of extent of complex oxidative crosslinking on the microphase separation and DM behavior of segmented PUU anionomers based films with different urea content which is useful in designing such materials in coating system with specific surface structure and function. Note de contenu : - MATERIALS
- METHODS : Preparation of fatty acid modified PUDs - Preparation of films - Instrumental analysis
- FOURIER TRANSFORM INFRARED SPECTROSCOPY
- THERMAL ANALYSIS
- DYNAMIC MECHANICAL : Effect on the storage modulus - Effect on loss factor (tan delta)
- MECHANICAL PROPERTIESPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16265
in PAINTINDIA > Vol. LXII, N° 10 (10/2012) . - p. 51-62[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14240 - Périodique Bibliothèque principale Documentaires Disponible Characterization of immiscibly blended polyurethane coatings part 1 : selective staining for enhanced micro-Raman spectroscopy / Nicholas W. M. Heller in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)
PermalinkCharacterization of infrared absorption by powder coatings on steel panels / W. W. Carr in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 889 (02/1999)
PermalinkPermalinkChitosan hydrogels covalently crosslinked with a natural reagent / S. Vilchez in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 1/1009 (01-02/2009)
PermalinkChrome tanning improvement by chitosan application / Viktoriia Plavan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 3 (05-06/2012)
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PermalinkCobalt-free curing systems for polymer concrete / Roel Zuijderduin in JEC COMPOSITES MAGAZINE, N° 84 (10/2013)
PermalinkCollaboration speeds up automotive manufacturing / Frank Deutschländer in JEC COMPOSITES MAGAZINE, N° 82 (07/2013)
PermalinkColloid chemistry, part VIII : film forming processes / Vladimir V. Verkholantsev in EUROPEAN COATINGS JOURNAL (ECJ), N° 12/97 (12/1997)
PermalinkA comparative study of grafting steps on the preparation and properties of modified nanosilica for UV-curable coatings / Jianbing Wu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 5 (09/2014)
PermalinkComparative study of photoinitiator curing efficiency using regression data analysis / C.-H. Chang in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 70, N° 886 (11/1998)
PermalinkComparing the properties of isocyanate and non-isocyanate curing coatings / Dmitrii Smirnov in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4652 (06/2019)
PermalinkComparison of the effectiveness of electric IR and other energy sources to cure powdercoating / R. J. Dick in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 831 (04/1994)
PermalinkComposite materials. Catégorization, manufacturing process, mechanism and end uses / Priti Trivedi in PAINTINDIA, Vol. LIXV, N° 12 (12/2014)
PermalinkConservation concerns for acrylic emulsion paint coatings / M. Veeramani in PAINTINDIA, Vol. LXXII, N° 5 (05/2022)
PermalinkPermalinkPermalinkCopolyester resin chemistry enhances adhesive performance / Mark Mulready in ADHESIVES AGE, Vol. 39, N° 13 (12/1996)
PermalinkCross-linking in adhesives using vibration technology / Markus Menacher in ADHESION - ADHESIVES + SEALANTS, N° 1/2012 (2012)
PermalinkCross-linking of gelatin with epichlorohydrin in a sodium-acetate-trihydrate/urea deep eutectic solvent system / Yuming Cui in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 3 (03/2023)
PermalinkCross-linking phosphoric acid hydrolysates of collagen with cyanidric chloride / I. Chakarska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 2 (03-04/2008)
PermalinkCross-linking reaction between genipin and porcine acellular dermal matrix / Dan Nianhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 4 (07-08/2015)
PermalinkCrosslink density and cure window of oligourethane diol/melamine high-solids coatings / M. Yaseen in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 70, N° 879 (04/1998)
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PermalinkCrosslinking vs. interdiffusion rates in melamine-formaldehyde cured latex coatings : a model for waterborne automotive basecoat / Mitchell A. Winnik in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 892 (05/1999)
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PermalinkDefects in solvent-free organic coatings studied bu atomic force microscopy, scanning acoustic microscopy, and confocal laser microscopy / Jakob Lange in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 838 (11/1994)
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