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The effects of the interaction of pigment coating with ink on the offset print quality / Sinan Sonmez in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 6 (11/2022)
[article]
Titre : The effects of the interaction of pigment coating with ink on the offset print quality Type de document : texte imprimé Auteurs : Sinan Sonmez, Auteur ; Roland Gong, Auteur ; Paul D. Fleming, Auteur ; Qingliu Wu, Auteur Année de publication : 2022 Article en page(s) : p. 1851-1858 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Encre
Enrobage (technologie)
Formulation (Génie chimique)
Huile de soja
Offset (imprimerie)
Papier et carton couché
Revêtements organiques
RugositéIndex. décimale : 667.9 Revêtements et enduits Résumé : The study was carried out in order to determine the effect of coating formulations on printing quality. For this purpose, five different coating formulations were created in which kaolin and precipitated calcium carbonate pigments (PCC) were mixed in different proportions. Coating formulations were applied in two layers on a base cardboard. Calendering of the coated base cartons was carried out using a laboratory calender. The prints were made on the calendered cardboards using mineral oil-based, vegetable (soybean) oil-based, and UV inks in a laboratory type offset printing machine. As a result of the study, it was determined that the coating of the base cardboard surface affects the optical and physical properties of the cardboard, the surface properties change according to the amount of pigment used in the formulations, and this change affects the printing quality. In the study, the best printing results in terms of printing quality were obtained with the use of UV ink. Mineral oil-based and vegetable (soybean) oil-based ink were compared in terms of printing quality, and since the values obtained are close to each other, it can be said that vegetable oil-based inks can be preferred instead of mineral oil-based ink, and more environmentally friendly sustainable productions can be realized. It has always provided better results in terms of surface smoothness and printability in coated formulations where the kaolin ratio is increased. Note de contenu : - MATERIALS AND METHODS : Base cardboard characteristics - Coating formulations and application - Performing the test printings
- RESULTS AND DISCUSSION : The surface roughness properties of unprinted coated cardboards - Print density properties - Print lightness properties - Print color properties - Print chroma properties - Delta gloss properties
- Table 1 : Base cardboard layers and their weights
- Table 2 : The properties of the pigment
- Table 3 : The properties of the binder (latex)
- Table 4 : The coating formulationsDOI : https://doi.org/10.1007/s11998-022-00656-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00656-4.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38502
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 6 (11/2022) . - p. 1851-1858[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23804 - Périodique Bibliothèque principale Documentaires Disponible The efficiency of various treatments in protecting wood surfaces against weathering / V. Jirous-Rajkovic in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 87, B1 (02/2004)
[article]
Titre : The efficiency of various treatments in protecting wood surfaces against weathering Type de document : texte imprimé Auteurs : V. Jirous-Rajkovic, Auteur ; D. Radovan, Auteur ; A. Bogner, Auteur Année de publication : 2004 Article en page(s) : p. 15-19 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Détérioration
Bois -- Revêtements protecteurs
Bois -- Vernis
Bois extérieurs
Essais accélérés (technologie)
Essais d'adhésion
Lasures
Nitrate de fer
Photostabilisants
Résistance aux conditions climatiques
Revêtements organiques
Stabilisant à la lumière de type amine encombrée
Traitement chimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Wood exposed to the outdoors undergoes photo-oxidative degradation in a natural weathering process.
The efficacy of various treatments for the protection of wood surfaces from weathering elements (ultraviolet radiation and water) was investigated by using the measurements of the changes in adhesion on fir and oak samples after their exposure to natural climatic conditions and after accelerated weathering.
The most efficacious of the six UV-protective treatments proved to be the treatment of the wood surfaces with a semi-transparent stain, followed by treatments with a transparent wood stain containing two types of photostabilisers. The stabilisation of the wood surfaces by ferric nitrate did not improve the performance of the wood stain used.Note de contenu : - Wood samples
- Chemical treatments
- Coatings
- Accelerated weathering
- Natural weathering
- Adhesion testing
- Table 1 : Sample codes and description of the treatments
- Table 2 : Mean adhesive strength (MPa) and standard deviations of samples after QUV exposure
- Table 3 : Mean adhesive strength (MPa) and standard deviations of samples after natural exposureDOI : 10.1007/BF02699559 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699559.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5477
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 87, B1 (02/2004) . - p. 15-19[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000392 - Périodique Bibliothèque principale Documentaires Disponible The experience factor in coating development / Gerhard Grüll in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2020)
[article]
Titre : The experience factor in coating development : Two decades of research into the durability of exterior wood coatings Type de document : texte imprimé Auteurs : Gerhard Grüll, Auteur Année de publication : 2020 Article en page(s) : p. 16-22 Langues : Anglais (eng) Catégories : Applications extérieures
Bois -- Revêtements protecteurs
Durée de vie (Ingénierie)
Revêtements -- Analyse
Revêtements -- Détérioration
Revêtements organiques
Revêtements protecteurs -- DétériorationIndex. décimale : 667.9 Revêtements et enduits Résumé : The service life of exterior wood coatings has been a key issue in the research group on surfaces at Holzfoschung Austria for about 20 years. It is worth summarising the experience gathered during this period and loocking back on the development of conclusions for practice. Have early theories and recommendations from a young research team been proven in practice ? Note de contenu : - Estimated maintenance intervals
- Limit states help with maintenance decisions
- Standardised testing to ascertain real-life durability
- Opaque coatings proved more durable
- Service life prediction model
- Hail resistance to improve durability
- Fig. 1 : Time to failure as a function of dry film thickness of 26 out of 30 coating systems on wood in natural weathering
- Fig. 2 : Time to failure as a function of brightness of 26 out of 30 coating systems on wood in natural weathering
- Fig. 3 : Time tofailure of 26 out of 30 coating systems on wood in natural weathering compared to artificial weathering
- Fig. 4 : The SERVOWOOD service life prediction model gives results relative to a reference system ; a web-based application to use this model is under development
- Fig. 5 : Schematic of hail damage and degradation of a coating on wood with moisture ingress, followed by growth of blue stain fungi and flaking ; maintenance can be possible until step 3
- Fig. 6 : Section through a hail impact on coated wood after nine months natural weathering ; vanish without primer, strong discoloration and fungal growth in the wood and varnish with primer, no fungal growth, hardly any discoloration
- Table 1 : Guidance values for maintenance intervals of exterior wood coatings on cladding and balconies
- Table 2 : Definition of limit states for wood coating systemEn ligne : https://drive.google.com/file/d/1UIKTEwCWqAj9pZ5fqRVBN20kOldC2IRg/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34589
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 9 (09/2020) . - p. 16-22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22344 - Périodique Bibliothèque principale Documentaires Disponible The formation of polyester-melamine/urethane coatings / Nadezda Denisova in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4651 (05/2019)
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Titre : The formation of polyester-melamine/urethane coatings Type de document : texte imprimé Auteurs : Nadezda Denisova, Auteur ; Natalija B. Skopintseva, Auteur ; Daria Afanaseva, Auteur ; Evgenii Indeikin, Auteur Année de publication : 2019 Article en page(s) : p. 48-50 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique
Coil coatings
Copolymère mélamine-Formaldéhyde
Diisocyanate d'hexaméthylène
MéthylationLa méthylation est l'attache ou la substitution d'un groupement méthyle sur un substrat. La déméthylation est au contraire, la suppression d'un groupe méthyle sur un substrat.
Réticulation (polymérisation)
Revêtements -- Analyse
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés physiques
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : One of the cost-effective ways to significantly influence the coating formation process and the performance of polyester coatings is to use a cross-linking agent containing an isocyanate. Methylated melamine-formaldehyde with a high degree of alkylation (HMMM) and methyl ethyl ketoxime-blocked hexamethylene diisocyanate (HDI) were used for polyester resin cross-linking. The influence of cross-lin king agents on coating performance and characteristics was studied using Small Amplitude Oscillatory Shear Rheomenty (SAOS), Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) techniques. The cross-linking degree of the polyester system containing the mixture of HMMM and HDI was shown to be significantly lower than that of the systems where only one of the cross-linking agents was used. High loss modulus values G" in the system with HMMM as compared to the system with HDI can be explained by a less dense three-dimensional network structure. With the decrease of HMMM and HDI the formation of three-dimensional network starts at a higher temperature. At the same time, when only the hardener content is reduced it leads to the decrease of the cross-linking degree. Note de contenu : - Table 1 : System ingredients
- Table 2 : Cross-linking reaction start temperatures for the compositions studies
- Table 3 : Cross-link concentrations for the system
- Table 4 : Physical and mechanical properties of the films, PTM = 224°C, 60 sec
- Fig. 1 : Storage modulus (G') and loss modulus (G") during coating curing
- Fig. 2 : TGA - analysis a) Sample 1, b) Sample 2
- Fig. 3 : Storage modulus (G') and loss modulus (G") during coating curing
- Fig. 4 : The influence of curing temperature on residual heat of reaction
- Fig. 5 : The influence of curing temperature on the TgEn ligne : https://drive.google.com/file/d/1BasgjNlsCHEPzXR6seqIu44IjZbJI9pu/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32608
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4651 (05/2019) . - p. 48-50[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20960 - Périodique Bibliothèque principale Documentaires Disponible The influence of barrier pigments in waterborne barrier coatings on cellulose nanofiber layers / Mohammed Al-Gharrawi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 1 (01/2022)
[article]
Titre : The influence of barrier pigments in waterborne barrier coatings on cellulose nanofiber layers Type de document : texte imprimé Auteurs : Mohammed Al-Gharrawi, Auteur ; Rachel Ollier, Auteur ; Jinwu Wang, Auteur ; Douglas W. Bousfield, Auteur Année de publication : 2022 Article en page(s) : p. 3-14 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aliments -- Emballages
CelluloseLa cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Eléments finis, Méthode des
Matériaux -- Propriétés barrières
Nanofibres
Revêtements en phase aqueuse
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Layers of cellulose nanofibers (CNF) have great potential to be used in food packaging applications because of their oxygen and grease barrier properties. However, because of their sensitivity to moisture, they likely will need to be used in a layered structure with water vapor barrier layers. Waterborne barrier coatings (WBBC) have the potential to provide this water vapor barrier, but their performance on paper with a CNF layer has not been described in the literature. Paper that had a CNF layer was coated with three different WBBC with various levels of two different barrier pigments to improve the water vapor barrier properties of these systems. The effective diffusion coefficient of these systems was obtained by fitting the data to a two-layer diffusion model. A finite element code was used to predict the flux rate of water vapor through the barrier layers in the presence of a barrier pigment. The dangers of samples “blocking” in production have been tested as well as grease barrier properties. The presence of the CNF layer on paper is shown to improve the performance of the water vapor barrier layer, in some cases, by a factor of six. Adding barrier pigment to the WBBC improves barrier properties at low concentration by 15%, but as the concentration of pigment increases, the barrier properties decrease. The water vapor transmission rate does not decrease to the same order of magnitude as expected from simple theoretical models and the finite element calculations. This result likely is linked to fine bubbles in the coatings that are hard to remove or other defects that are generated during coating or drying. Barrier pigments remove concerns around blocking. All samples had good grease barrier properties. Note de contenu : - Table 1 : Ranking system for blocking test
- Table 2 : The values of effective moisture diffusion coefficient Dc in coatings obtained from fitting equation (1) for various pigment types and concentrations for polymers A, B, C. Values are in m2/s × 1010DOI : https://doi.org/10.1007/s11998-021-00482-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00482-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37140
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 1 (01/2022) . - p. 3-14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23313 - Périodique Bibliothèque principale Documentaires Disponible The influence of coating color, heartwood and sapwood, on moisture content and growth of microorganisms on the surface during outdoor exposure of Norway spruce boards / Tinh Sjökvist in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)
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