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1K PUR dispersion with comparable performance to 2K waterborne coatings / Makoto Nakao in COATINGS TECH, Vol. 16, N° 2 (02/2019)
[article]
Titre : 1K PUR dispersion with comparable performance to 2K waterborne coatings Type de document : texte imprimé Auteurs : Makoto Nakao, Auteur Année de publication : 2019 Article en page(s) : p. 22-27 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dispersions et suspensions
Essais accélérés (technologie)
Formulation (Génie chimique)
Polyuréthanes
Résistance à l'humidité
Résistance aux taches
Résistance chimique
Revêtement monocomposant
Revêtements -- Propriétés physiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : The Next-gen 1K PUD, a novel 1K PU dispersion, outperformed commercially available 1K PUDs by exceeding their chemical and stain resistance and matched even the performance of crosslinked 2KWB coatings. Moreover, the Next-gen 1KPUD demonstrated faster dry times than the 2KWB coatings, which will increase productivity during the coating application. A coating formulated with the Next-gen 1KPUD passed all the AAMA 615-13 physical performance requirements. Further, its film hardness matched that of a crosslinked 2KWB coating. Finally, accelerated weathering tests under QUV-A and Xenon arc exposure showed that a coating formulated with Next-gen 1KPUD will perform commercially available 1K PUDs and a 2KWB coating that were evaluated. Note de contenu : - EXPERIMENTAL : Physical properties comparison with high-performance PUD and 2KWB PU system - Physical properties for American Architectural Manufacturer Association 615-13 performance evaluation - Accelerated weathering
- RESULTS AND DISCUSSION : Physical properties comparison with high-performance PUD and 2KWB PU - Physical properties for AAMA 615-13 performance evaluation - Accelerated weathering performance
- Table 1 : Key properties of a Newly Developed 1KPUD
- Table 2 : Characteristics of high-performance PUDs and 2KWB systems
- Table 3 : Physical properties for AAMA 615-13
- Table 4 : Generic formulation used for this study
- Table 5 : Base formulations for accelerated weathering study
- Table 6 : Results of chemical resistance and stain resistance
- Table 7 : Results of dry times and König pendulum hardness development
- Table 8 : Results of Humidity resistance
- Table 9 : Results of physical properties for AAMA 615-13
- Fig. 1 : Gloss retention results of QUV-A ASTM D4587 (cycle 2)
- Fig. 2 : Results of Xenon arc ASTM D6695 (cycle 1)En ligne : https://drive.google.com/file/d/13a9N-bNeXZljqfVjWv9TqmOs60ImMhbd/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31851
in COATINGS TECH > Vol. 16, N° 2 (02/2019) . - p. 22-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20648 - Périodique Bibliothèque principale Documentaires Disponible Acrylic and acrylic/styrene copolymer dispersions / Manfred Schwartz in EUROPEAN COATINGS JOURNAL (ECJ), N° 3/98 (03/1998)
[article]
Titre : Acrylic and acrylic/styrene copolymer dispersions Type de document : texte imprimé Auteurs : Manfred Schwartz, Auteur ; Heribert Kossman, Auteur Année de publication : 1998 Article en page(s) : p. 134-140 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère styrène acrylique
Couches minces
Dispersions et suspensions
Polyacryliques
Polymères en émulsion
Résistance aux conditions climatiques
Revêtements en bâtimentIndex. décimale : 667.9 Revêtements et enduits Résumé : Latex paints can be formulated from a variety of polymer dispersions. This article compares the properties of acrylic and acrylic/styrene dispersions when used as binders in such paints. The films formed from these dispersions absorb little water. Acrylic/styrene films are more permeable to water vapour than straight acrylic ones. There is no difference in the performance of acrylic and acrylic/styrene latices in mat paints formulated for use outdoors. Note de contenu : - Acrylic copolymer dispersions
- Tests on polymer-dispersion films : Water absorption in polymer films - Preparation for the measurement of water vapour transmission - Results of the water absorption and water vapour transmission tests
- Weathering of masonry paints : Effect of the binder type and pigment volume concentration - Effect of pigment/extender ratio on weathering properties - Effect of the filler typeEn ligne : https://drive.google.com/file/d/1nGf18yR_6aye6NbjYDjPlIcyyxO0JaBo/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11067
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 3/98 (03/1998) . - p. 134-140[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000590 - Périodique Bibliothèque principale Documentaires Disponible Acrylic copolymer dispersions - binders for latex paints / Gerd Aumann in EUROPEAN COATINGS JOURNAL (ECJ), N° 10/01 (10/2001)
[article]
Titre : Acrylic copolymer dispersions - binders for latex paints Type de document : texte imprimé Auteurs : Gerd Aumann, Auteur ; Manfred Schwartz, Auteur Année de publication : 2001 Article en page(s) : p. 46-53 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymères
Décoloration
Dispersions et suspensions
Farinage (défauts)
Hydrophobie
Latex
Liants
Liants en phase aqueuse
Polyacryliques
Revêtements organiquesIndex. décimale : 667.6 Peintures Résumé : Solvent-based emulsion paints are still the state of the art for many coating applications. However, interest continues to grow in binders that permit the formulation of solvent-free emulsion based paint systems. This requirement can be met by selecting polymer dispersions with an appropriate minimum film-forming temperature (MFFT). Therefore, the similarities and differences between pure (or straight) acrylic (Ak) and acrylic/styrene (Ak/S) dispersions with different MFFTs will be discussed In the following. Other variables that we considered are the pigment volume concentration (PVC in the range of 46 to 68%), the grade of titanium dioxide pigment and the composition of the extenders used in the formulation. Note de contenu : - Raw materials used
- Results of the tests
- Hydrophobic binder supports film formation at 5°C
- Solvent-free paints absorbs more water then solvent-containing
- Colour change due to artificial weathering
- Chalking results depends on binder typeEn ligne : https://drive.google.com/file/d/13bkhSDxb7fQuXXW1toekxSXnpAMcER38/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10936
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10/01 (10/2001) . - p. 46-53[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000638 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Acrylic latex paints Titre original : a comparative study (Part II) Type de document : texte imprimé Auteurs : Roland Baumstark, Auteur ; Carlos Costa, Auteur ; Manfred Schwartz, Auteur Année de publication : 2001 Article en page(s) : p. 50-65 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dispersions et suspensions
Latex
Liants
Polyacryliques
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : In earlier work two commercially available aqueous dispersions were used to demonstrate the suitability and differences of acrylic/styrene (Ak/S) and pure acrylic (Ak) copolymers as binders for masonry paints. With the help of a variety of model dispersions, the current work continues to look at the two binder types by studying how chemically different monomers affect the film properties and those of formulated paints. Note de contenu : - MODEL DISPERSIONS WITH TYPICAL BINDER MONOMERS
- RESULTS OF TESTS ON THE POLYMER DISPERSION FILMS : Good water solubility of monomer causes high water uptake of the polymer film - High Water-vapour transmission rate relates to hydrophilic polymer - Repeated washing and drying influences the tensile strenght - n-butylacrylate copolymers exhibits the greatest photostability, styrene lowers the photostability - High styrene content efectuate yellowing of the pure binder during artificial weathering - Results of natural weathering are contradictive to the accelerated artificial weathering tests
- RESULTS OF TESTS ON PIGMENTED COATING : Water absorption, WVTR's and tensile strengths of the pigmented paints
- WEATHERING OF THE PAINF FILMS : Artificial weathering shows differences in the chalking behaviour but not concerning yellowing - Dirt pick-up-resistance is enhanced by binders'Tg and hydrophobicity - Interpretation of the study resultsEn ligne : https://drive.google.com/file/d/1lADJoXg6Oo26qZOwU2bHfLKc0Fd7lXuf/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10957
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 5/01 (05/2001) . - p. 50-65[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000635 - Périodique Bibliothèque principale Documentaires Disponible Acrylic latex paints : a comparison study (part I) / Manfred Schwartz in EUROPEAN COATINGS JOURNAL (ECJ), N° 03/01 (03/2001)
[article]
Titre : Acrylic latex paints : a comparison study (part I) Type de document : texte imprimé Auteurs : Manfred Schwartz, Auteur Année de publication : 2001 Article en page(s) : p. 112-119 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Applications extérieures
Chlorure de polyvinyle
Dispersions et suspensions
Etudes comparatives
Formulation (Génie chimique)
Latex
Liants
Polyacryliques
Polymères -- Détérioration
Revêtements en bâtiment:Peinture en bâtiment
Revêtements en phase aqueuse:Peinture en phase aqueuse
Revêtements organiquesIndex. décimale : 667.6 Peintures Résumé : Dispersion or emulsion paints are formulated with a variety of chemically different types of binders, which in most cases can be classified as acrylic esters copolymers or vinyl ester copolymers. A suitable binder is necessary to give a high quality paint. Experiments on masonry paints in the PVC range of 35 to 55% show that after many years of outdoor exposure no significant difference between straight acrylic and acrylic/styrene copolymers can be found. More important is the optimisation of the pigment volume concentration and the pigment/extender combination than the type of the binder. Note de contenu : - Various acrylic copolymer dispersions with similar particle size
- Paint formulations
- Water is the main source of damage a coating
- Neutralisation of binders with NaOH gives better WA and WVTR results
- Outdoor weathering results
- Colour changes due to outdoor exposure
- Yellowing of acrylic based paints is not better than acrylic/styrene
- Chalking due to out door exposure
- TABLES : 1. Polymer dispersions (Tg = glass transition temperature) - 2. Paint formulations (solid contents of the paints : 58%) - 3. Results of laboratory tests made with paints of PVC 40% - 4. Results of laboratory tests made with paints of PVC 50% - 5. Results of laboratory tests made with paints of PVC 60% - 6. Dirt pick-up and polymer degradation/chalking of the paint
- FIGURES : 1. Colour change of masonry paint at PVC 50% by outdoor exposure - 2. L*-value of masonry paints at PVC 50% as function of outdoor exposure - 3. b*-value of masonry paints at PVC 50% as function of outdoor exposureEn ligne : https://drive.google.com/file/d/1UuWSsdvM0IRQI3BZDQ-gxfLwYhPEGGqi/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24210
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 03/01 (03/2001) . - p. 112-119[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000632 - Périodique Bibliothèque principale Documentaires Disponible Additives heighten performance solutions / Christophe Paulo in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4589 (10/2013)
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