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Production moderne de résine et polymère en émulsion / Harald Schmidt in EUROPEAN COATINGS JOURNAL (ECJ), N° 1-2/94 (01-02/1994)
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Titre : Production moderne de résine et polymère en émulsion Type de document : texte imprimé Auteurs : Harald Schmidt, Auteur ; Wolfgang Munch, Auteur Année de publication : 1994 Article en page(s) : p. 30-42 Langues : Anglais (eng) Tags : 'Peinture émulsion' Liant Fabrication Polycondensation 'Polymérisation Polyester 'Acrylique dérivé polymère' Automatisation EQuipement Index. décimale : 667.9 Revêtements et enduits Résumé : Cet article met en évidence les exigences qui doivent être rencontrées lors du planning et de la construction de nouvelles usines pour la fabrication de résines synthétiques et polymères en émulsion. De plus, il traite de la technologie moderne d'équipement, en particulier du point de vue de la protection de l'environnement, des réglementations ayant trait à la sécurité, de l'efficacité, de l'économie et de l'amélioration de la qualité des produits par l'automatisation. Note de contenu : I - Planning et construction d'usines nouvelles
II - Technologie d'équipement : 1) Chargement des matières premières (a. Matières premières solides - b. Matières premières liquides) - 2) Equipements pour réactions par polycondensation (a. Schéma directionnel des équipements de production - b. Equipements pour le vide - c. Systèmes de chauffage - d. Instruments et équipements de contrôle - e. Contrôle de la réaction par mesure continue de la viscosité) - 3) Ateliers de production de résines acryliques et de polymères en émulsion (a. Configuration générale de l'atelier de production - b. Systèmes de chauffage - c. Instuments et équipements de contrôle) - 4) Ateliers de polyaddition - 5) Ateliers de liants (a. Organisation générale des ateliers de production - b. Systèmes de chauffage - c. Instruments et équipements de contrôle)
III - Automatisation par système de contrôle du procédé assisté par ordinateurPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11240
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 1-2/94 (01-02/1994) . - p. 30-42[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 002490 - Périodique Bibliothèque principale Documentaires Disponible Cerium acetate-modified aminopropylsilane triol : A precursor of corrosion-preventing coating for aluminum-finned condensers / T. Sugama in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)
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Titre : Cerium acetate-modified aminopropylsilane triol : A precursor of corrosion-preventing coating for aluminum-finned condensers Type de document : texte imprimé Auteurs : T. Sugama, Auteur Année de publication : 2005 Article en page(s) : p. 649-659 Note générale : Bibliogr. Langues : Américain (ame) Tags : Propriété thermique Etude expérimentale Corrosion sel Protection corrosion Stabilité Effet concentration Polycondensation solution Préparation Acier Aluminium Couche protectrice anticorrosion Cérium Acétate Inhibiteur Amine polymère Siloxane Matériau revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : A poly-acetamide-acetoxyl methyl-propylsiloxane (PAAMPS) polymer containing a cerium (Ce) oxide derivative was synthesized through three spontaneous reactions: condensation, amidation, and acetoxylation. The PAAMPS synthesizing took place between the Ce acetate dopant and aminopropylsilane triol (APST) as the film-forming precursor aqueous solution at 150°C. PAAMPS was evaluated for use as a corrosion-preventing coating for air-cooled condensers consisting of two metal components : aluminum fins and carbon steel tube. The key factors to ensuring the maximum performance of the PAAMPS/Ce oxide coating system in mitigating the corrosion of both aluminum and steel included (1) minimizing the content of non-reacted water-soluble APST and Ce acetate remaining in the coating, (2) lowering the susceptibility of the coating's surface to moisture, (3) precipitating a passive Ce3+ oxide (Ce2O3( film insensitive to Cl dissolution over the metal's surfaces, and (4) possessing excellent adhesion to the metal's surfaces. The combination of these factors considerably decreased the rate of the cathodic oxygen reduction reaction at the corrosion site of the metals. In fact, the corrosion rate, measured in milli-inches per year (mpy), of bare steel was reduced more than one order of magnitude by applying this coating. Correspondingly, the coating extended the useful lifetime of steel exposed in a salt-fog chamber at 35°C from only ~10 hr to ~768 hr. Furthermore, tins coating system far better protected an aluminum substrate from the corrosion than it did one of steel. Even a very thin nanoscale coating film deposited on the aluminum's surfaces reduced the corrosion rate, (mpy), by nearly two orders of magnitude over that of the bare aluminum. Also, the salt-spray resistance of aluminum panels covered by this nanoscale film was strikingly extended to more than 1440 hr, compared with -40 hr for bare aluminum. DOI : 10.1007/BF02774594 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02774594.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3790
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 8 (10/2005) . - p. 649-659[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003121 - Périodique Bibliothèque principale Documentaires Disponible Latent acid catalysts for process control of phenolics / Graham Murray in JEC COMPOSITES MAGAZINE, N° 61 (12/2010)
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Titre : Latent acid catalysts for process control of phenolics Type de document : texte imprimé Auteurs : Graham Murray, Auteur Année de publication : 2010 Article en page(s) : p. 57-58 Langues : Anglais (eng) Tags : Phénoplaste 'Pile combustible' Application 'Pressage à chaud' Résol Polycondensation 'Matériau composite' 'Contrôle de processus' Index. décimale : 668.4 Plastiques, vinyles Résumé : For composite products where fire safety is paramount and high temperature resistance is important, the polymer of choice is phenolic. Phenolic composites are usually produced using resole resins, which are polymerised by the addition of strong acid catalysts or by hot pressing. Resole resins however, can be highly reactive when mixed with strong acids and dangerous exothermic reactions can result. The reactivity of an acid catalysed resole can be so rapid that the processing becomes impossible. This often means the pre-mixing of resin and catalyst must be done immediately before use, limiting applications to those where compounding is close to production operations because shipping and storage is problematic. Finding an effective latent acid catalyst to control polymer chemistry solves many process issues. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13777
in JEC COMPOSITES MAGAZINE > N° 61 (12/2010) . - p. 57-58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012656 - Périodique Bibliothèque principale Documentaires Disponible A new approach to correlate functional group distribution and reaction conditions of melamine formaldehyde resin / Sourabh Bhattacharya in PAINTINDIA, Vol. LI, N° 5 (05/2001)
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Titre : A new approach to correlate functional group distribution and reaction conditions of melamine formaldehyde resin Type de document : texte imprimé Auteurs : Sourabh Bhattacharya, Auteur Année de publication : 2001 Article en page(s) : p. 49-58 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Mélamine Polycondensation Alcoxylation Butanol 'Réactivité chimique' Durcissement 'Matières plastiques' 'Relation mise en œuvre propriété' Dureté 'Propriété mécanique' Index. décimale : 667.9 Revêtements et enduits Résumé : An innovative approach has been taken to establish definite correlation between reaction conditions and functional group distribution of melamine-formaldehyde resins. Four selective melamine-formaldehyde resins were synthesized under different melamine, formaldehyde, butanol ratios and pH. The functional groups of the final resins were characterized using Fourier Transform Infrared spectroscopy, Proton -Fourier Transform Nuclear Magnetic Resonance spectroscopy, along with other conventional chemical analysis. The effect of reaction conditions on molecular weight and its distribution were studied using Gel Permeation Chromatography. Further substantiation were carried out after curing with alkyd as well as with acrylic and subsequent correlation with the film hardness. Scanning Electron Microscopy was used to identify incompatibility. Based on these experiments author of this paper, it was confirmed that the structure and curing behaviour of melamine-formaldehyde resin can be predicted using various reaction conditions. The present work will also help in establishing a relation between the selection of melamine-formaldehyde resin with known structure as a cross-linker in the field of paint industry. Note de contenu : - Synthesis of MF-resin
- Characterisation of MF-resin
- Reactivity study
- Analysis of IR spectra
- NMR study
- GPC analysis
- Comparative studies of MF-resins under investigation
- Measurement of cured film hardness
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12587
in PAINTINDIA > Vol. LI, N° 5 (05/2001) . - p. 49-58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001266 - Périodique Bibliothèque principale Documentaires Disponible Novel synthesis of carboxy - functional soybean acrylic - alkyd resins for water - reducible coatings / Changchun Wang in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 904 (05/2000)
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Titre : Novel synthesis of carboxy - functional soybean acrylic - alkyd resins for water - reducible coatings Type de document : texte imprimé Auteurs : Changchun Wang, Auteur ; Geng Lin, Auteur ; Joon-Hwan Pae, Auteur ; Frank N. Jones, Auteur Année de publication : 2000 Article en page(s) : p. 55-61 Note générale : Bibliogr. Langues : Américain (ame) Tags : Alkyde résine Acrylate copolymère Matériau revêtement Préparation Polycondensation Huile soja Méthacrylique acide Acrylique Polyélectrolyte Relation composition propriété Stabilité chimique Hydrolyse stockage Utilisation Peinture eau Etude expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : A new process was developed for synthesis of alkyd resins in which a conventional monoglyceride is reacted with a carboxy-functional acrylic ceride is reacted with a carboxy-functional acrylic copolymer. The novel products are called acrylic-alkyd resins. The carboxy-functional acrylic copolymers were synthesized by solution-free radical polymerization. Gelation during alkyd resin synthesis was avoided by; (1) limiting the molecular weight of the acrylic copolymers to Mn 3500-5000 and (2) limiting the number average functionality about 6.5-10 carboxyl groups per molecule. Further, the carboxyl groups were derived from a mixture of acrylic and methacrylic acids (1/1.2 mol ratio) in the expectation that this would help control the process. Three series of acrylic copolymers were prepared from various combinations of acrylic monomers and reacted with a monoglyceride prepared from soybean oil and trimethylol propane. The composition of the acrylic resin was adjusted to minimize phase separation [observed visually and by scanning probe microscopy (SPM)] within cast films. The most satisfactory results were obtained with copolymers of 62-71 wt% of methyl methacrylate, 5-21 wt% of lauryl methacrylate, 7.2 wt% of acrylic acid, and 10.3 wt% of methacrylic acid, In preliminary tests, waterborne coatings made from acrylic-alkyd resins based on these acrylics had excellent stability, with acid numbers changing less than 10% after nine months of storage. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5807
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Code-barres Cote Support Localisation Section Disponibilité 001209 - Périodique Bibliothèque principale Documentaires Disponible Preparation of modified polyesters containing triphosphorous and their applications to PU flame-retardant coatings / Hong-Soo Park in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 1 (01/2006)
PermalinkSolvent blends based on dipropylene glycol dimethyl ether for the production of alkyd and polyester resins by the azeotropic process / Felipe A. Donate in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 902 (03/2000)
PermalinkSynthesis and characterisation of epoxy phenol novolac resins / Kishor R. Patil in PAINTINDIA, Vol. L, N° 10 (10/2000)
PermalinkSynthesis of alkyds and polyesters using graphic user interface based computer program / Sanjit Datta in PAINTINDIA, Vol. XLIX, N° 4 (04/1999)
PermalinkSynthesis of alkyld resins via acylation for high performance industrial coatings / D. V. Gaykar in PAINTINDIA, Vol. LI, N° 7 (07/2001)
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