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Avoiding filter effects of flame retardants / Christian Battenberg in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 1 (2021)
[article]
Titre : Avoiding filter effects of flame retardants : Completely halogen-free flame retardancy of epoxy-fiber composite components Type de document : texte imprimé Auteurs : Christian Battenberg, Auteur ; Frank Osterod, Auteur ; Adrian Beard, Auteur Année de publication : 2021 Article en page(s) : p. 46-49 Langues : Anglais (eng) Catégories : Epoxydes
Éther de diglycidyle et de bisphénol A
Halogènes -- Suppression ou remplacement
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Matières plastiques -- Additifs
Réticulants
ThermodurcissablesIndex. décimale : 668.4 Plastiques, vinyles Résumé : To meet stringent flame retardancy demands of areas such as transportation and electronics, components based on thermosets increasingly require a soluble, non-powder flame retardant (FR) due to low layer thickness in the final product or due to liquid processing methods. Two flame-retardants developed by Clariant meet these requirements. Note de contenu : - Halogen-free flame retardants for fiber composites
- Powdered flame retardants are unsuitable
- Alternatives for DOPO and phosphazene
- Lower viscosity than with other flame retardants
- V-O rating can be easily achieved
- Fig. 1 : Basic properties of the Exolit flame retardants compared with a DOPO- and a phosphazene-based reference in each case : the FR achieve similar or even better values than the references for all properties
- Fig. 2 : The cured epoxy resin with 40 phr ATH shows strong opacity due to the added FR particles. The cured epoxy resin with 100 phr Exolit EP 360, on the other hand, shows no opacity
- Table 1 : Comparison of different blends of an epoxy resin made from DGEBA with different FR additions
- Table 2 : Comparison of different systems of epoxy resin, hardener and Exolit FRPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35107
in KUNSTSTOFFE INTERNATIONAL > Vol. 111, N° 1 (2021) . - p. 46-49[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22531 - Périodique Bibliothèque principale Documentaires Disponible Methylcyclohexyl diamine (Baxxodur EC 210) - a hardener for epoxy systems with superior carbamate stability / Irene Gorman in SURFACE COATINGS INTERNATIONAL, Vol. 101.5 (10-11/2018)
[article]
Titre : Methylcyclohexyl diamine (Baxxodur EC 210) - a hardener for epoxy systems with superior carbamate stability Type de document : texte imprimé Auteurs : Irene Gorman, Auteur ; Michael Henningsen, Auteur ; Frank Hettche, Auteur ; Matthaeus Kopczynski, Auteur ; Alexander Panchenko, Auteur ; Marc Hofmann, Auteur ; Chin Li, Auteur ; Raj Sundar, Auteur Année de publication : 2018 Article en page(s) : p. 258-262 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Calorimétrie
DiamineUne diamine est un type de polyamine contenant exactement deux groupes amine. Les diamines sont principalement utilisées comme monomères pour synthétiser des polyamides, des polyimides et des polyurées. La principale diamine produite est le 1,6-diaminohexane, précurseur du Nylon 6-6, suivie de l'éthylènediamine1. L'hydrazine (H2NNH2) n'est en général pas considérée comme une diamine puisque ce n'est ni une amine (pas de carbone), ni une dibase.
Epoxydes
Éther de diglycidyle et de bisphénol A
Réticulants
Revêtements -- Additifs
Revêtements -- Propriétés mécaniques
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : Epoxy-based industrial maintenance coatings «fer excellent chemical and mechanical performance. However, the amine type hardeners often employed can easily react with atmospheric carbon dioxide and moisture to form carbamate salts. These carbamate salts accumulate on the surface and cause blush and intercoat adhesion issues. Adducts based on methylcyclohexyl diamine (MCDA, Baxxodur EC 210), a cycloaliphatic diamine curative for epoxy resin systems, displayed enhanced carbamate stability when compared to adducts based on both isophorone diamine (IPDA) and m-xylylene diamine (MXDA). This behaviour was further validated in coating tests, where coating formulations based on MCDA exhibited superior gloss. The cure behaviour, mechanical properties, and thermal properties of MCDA, IPDA, and MXDA cured systems were also assessed using various analytical techniques such as differential scanning calorimetry and rheology. Overall, MCDA was proven to be an attractive building block for epoxy diamine industrial coating systems. Note de contenu : - EXPERIMENTAL : Materials - Adduct synthesis - Preparation of reactive DGEBA-adduct mixtures - Methods
- RESULTS AND DISCUSSION : Adduct production - Thermal properties - Rheological properties - Carbamate stability
- Fig. 1 : Diamine-type epoxy hardeners employed in this study
- Fig. 2 : Idealised MCDA-based adduct
- Fig. 3 : Viscosity development of DGEBA hardened with the various adducts and adduct-BnOH mixtures, at a) 23°C and b) 75°C. Viscosity data for DGEBA hardened with IPDA-A8 is not reported because the starting viscosity of this formulation exceeded 10000 mPas
- Fig. 4 : Shore D development over time of DGEBA hardened with MCDA-A16, IPDAA16, and MXDA-A16 adducts at 23°C (ambient atmosphere)
- Fig. 5 : Adducts and adduct-BnOH mixtures aged at 23°C and 50% relative humidity for 48 hours. The presence of carbamates was detected visually through the observation of white precipitate or surface irregularities, as was the case for IPDA-A2.5-BnOH
- Fig. 6 : Carbamate stability of pure adducts and adduct-BnOH mixtures aged at 23°C and 50% relative humidity, and spectral gloss readings of DGEBA hardened with A2.5-BnOH adducts at 8°C and 70% relative humidity
- Table 1 : Summary of adducts and adduct-BnOH mixtures
- Table 2 : Thermal properties of DGEBA hardened with adducts and adduct-BnOH mixtures
- Table 3 : Rheological properties of DGEBA hardened with adducts and adduct-BnOH mixtures
- Table 4 : Shore D and tack development of DGEBA hardened with adducts and adduct-BnOH mixturesEn ligne : https://drive.google.com/file/d/1dnph6wSwc5MaA4x6fGb3WMYc6rqh8L6d/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31657
in SURFACE COATINGS INTERNATIONAL > Vol. 101.5 (10-11/2018) . - p. 258-262[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20356 - Périodique Bibliothèque principale Documentaires Disponible Multi-detection method for the fast screening of bisphenol A diglycidyl ether conjugates in the can-coating material / Monika Beszterda in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 6 (11/2022)
[article]
Titre : Multi-detection method for the fast screening of bisphenol A diglycidyl ether conjugates in the can-coating material Type de document : texte imprimé Auteurs : Monika Beszterda, Auteur ; Magdalena Tadrowska, Auteur Année de publication : 2022 Article en page(s) : p. 1901-1907 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chromatographie en phase liquide à hautes performances
Criblage
Éther de diglycidyle et de bisphénol A
Ions
Spectrométrie de masseIndex. décimale : 667.9 Revêtements et enduits Résumé : Untargeted screening high-pressure liquid chromatography-mass spectrometry method for the bisphenol A diglycidyl ether conjugates (BADGEs) present in the can-coating material was developed. The method was based on the detection of ions [M+H]+, [M+NH4]+, [M+Na]+ and the respective product ions formed as a result of the cone voltage-induced fragmentation, mainly those at m/z 135, 191, and 207. The method allowed the detection of the most common and most abundant BADGEs present in the can-coating materials, namely H2O, BuEtOH, and BPA adducts. DOI : https://doi.org/10.1007/s11998-022-00668-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00668-0.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38506
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 6 (11/2022) . - p. 1901-1907[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23804 - Périodique Bibliothèque principale Documentaires Disponible Recent developments in UV cure epoxy acrylate oligomers / R. D. Kulkarni in PAINTINDIA, Vol. LXI, N° 7 (07/2011)
[article]
Titre : Recent developments in UV cure epoxy acrylate oligomers Type de document : texte imprimé Auteurs : R. D. Kulkarni, Auteur ; M. E. Chaudhari, Auteur ; S. Mishra, Auteur Année de publication : 2011 Article en page(s) : p. 58-64 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylates Les monomères acrylates sont un groupe d'esters faisant partie des vinyles, car renfermant une double liaison carbone-carbone et sont utilisés pour former des polyacryliques qui ont de multiples usages.
Epoxydes
Éther de diglycidyle et de bisphénol A
Oligomères
Réticulation (polymérisation)
Revêtements -- Séchage sous rayonnement ultravioletTags : 'UV curing' Oligomères 'Éther de diglycidyle et bisphénol A' 'Epoxy acrylate' 'Epoxyde cycloaliphatique' 'Monomère acrylate hybride' Index. décimale : 667.9 Revêtements et enduits Résumé : The performance properties and industrial applications of epoxy acrylate prepolymer based UV cure coatings are primarilygoverned by the nature of structural modification in backbone / en capping of pre polymer. The present review paper therefore covers the recent developments in the synthesis and characterisation of diverse epoxy acrylate oligomers including acrylate capped BPA/novolac epoxy, epoxidised oils and cycloaliphatic epoxy systems. The alkoxysilane, siloxane, adipic acid, fluorinated and phenyl phtalazinone modifications of epoxy diacrylate for obtaining special performance properties have been highlighted. Note de contenu : - Acrylated bisphenol-A epoxy oligomers
- Epoxy novolac (meth)acrylate oligomers
- Acrylated epoxidised oils and cycloaliphatic hybrid epoxy acrylates
- Modified speciality epoxy acrylate oligomers : Alkoxysilane modified epoxy acrylate oligomer - Polydimethylsiloxane epoxy acrylate oligomer - Adipic acid modified methacrylated epoxy resin - Epoxy methacrylate with phenyl phthalazinone backbone
- Applications of epoxy acrylate UV cure coatings (Reinhold S., 2006)
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11870
in PAINTINDIA > Vol. LXI, N° 7 (07/2011) . - p. 58-64[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13281 - Périodique Bibliothèque principale Documentaires Disponible Tentative identification of BADGE derivatives in epoxy type coatings in a model sample: a beverage can in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 6 (11/2022)
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Titre : Tentative identification of BADGE derivatives in epoxy type coatings in a model sample: a beverage can Type de document : texte imprimé Année de publication : 2022 Article en page(s) : p. 1893-1900 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aliments -- Emballages
canettes
Caractérisation
Chromatographie en phase liquide
Epoxydes
Éther de diglycidyle et de bisphénol A
Revêtements intérieurs
Revêtements organiques
Spectrométrie de masseIndex. décimale : 667.9 Revêtements et enduits Résumé : Organic coatings have been applied to the inside surfaces of cans intended to come into contact with food and beverages. In general, polymeric coatings are complex formulations that may contain different components such as resins, crosslinking agents, catalysts, wetting agents, etc. The most widely used type of polymeric coating is epoxy, which is obtained by the condensation of epichlorohydrin and bisphenol A, which yields bisphenol A diglycidyl ether (BADGE). The resulting finished material may have starting substances such as monomers and additives, and also non-intentionally added substances that can potentially migrate from the food contact material into the food. In the present study, a beverage can, as a model sample, was evaluated. First, the internal surface was identified as epoxy-based coating using an infrared spectrometer with attenuated total reflectance. In the second part of the work, an acetonitrile extract of the can sample was obtained in order to tentatively identify potential BADGE derivatives using a non-targeted screening by liquid chromatography coupled to tandem mass spectrometry in positive and negative atmospheric pressure chemical ionization mode. Several BADGE derivatives could be tentatively identified comparing their characteristic m/z with a homemade database developed taking into account possible starting substances used in epoxy resins. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : Reagents and standards - Sample and extraction procedure - Instrumental equipment
- RESULTS AND DISCUSSION : Characterization of the type of coating by FTIR-ATR analysis - Non-targeted screening by LC analysis
- Table 1 : Tentatively identified BADGE derivatives in the acetonitrile extract by LC-MSPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38505
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 6 (11/2022) . - p. 1893-1900[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23804 - Périodique Bibliothèque principale Documentaires Disponible