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The liquid metal look / Wei Liu in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 197, N° 4510 (03/2007)
[article]
Titre : The liquid metal look Type de document : texte imprimé Auteurs : Wei Liu, Auteur ; Carolyn Lavallee, Auteur Année de publication : 2007 Article en page(s) : p. 18-22 Langues : Anglais (eng) Catégories : Absorbeurs de rayonnement ultraviolet
Oxychlorure de bismuth
Photostabilité
Pigments métalliques
RéflectanceIndex. décimale : 667.2 Colorants et pigments Résumé : Recent advances mean bismuth oxychloride pigment is being used for variety of purposes. This paper looks at its application in coatings.
The liquid metal look is essentially a smooth, highly reflective, non-grainy appearance. This is accomplished by using either a continuous film or by using very thin platelets, on the order of 30-50 nanometers, to reduce the scattering of light from edges of platelets. It has been desirable in the automotive industry for some time and is now making an appearance in other coating applications, such as teletronics.
This is accomplished by using either a continuous film or by using very thin platelets of a highly reflective pigment. One of the pigments that satisfy these requirements is bismuth oxychloride. This pigment has been better know for applications such as button and costume jewellery coatings, but recent advances make it feasible for less traditional applications as well, such as achieving the liquid metal effect.
Bismuth oxychloride is made by the reaction of bismuth nitrate in acid solution with chloride. By suitably controlling pH and temperature, the formation of BiOCl is thermodynamically preferred over Bi2O3, bismuth oxide. With very fine control of these same parameters the crystals grow as very thin patelets. The chemical reaction is as follows :
Bi(NO3)3 + H2O + 3NaCl --> BiOCl + 2HCl + 3NaNO3
The resulting platelets are about 90nm thick at the edge and somewhat thicker in the middle. It is the shape of these platelets, along with the index refraction (about 2.0), that is responsible for its pearlescent appearance.Note de contenu : - Bi(NO3)3 + H20 + 3NaCl -> BiOCl + 2HCl + 3NaNO3
- Optical properties vs effect
- UV stability
- Applications
- Applications in coatings
- Blended
- Test result
- UV absorber
- TABLE : 1. Physical properties of BiOCl and TiO2 coated mica - 2. L change for BiOCl crystal stabilised by cerium hydroxide in medium shade after 240hr QUV 340 exposure - 3. L* change for BiOCl crystal stabilised by cerium hydroxide and UV absorber in medium shade after 240hr QUV exposureEn ligne : https://drive.google.com/file/d/1bguGWEO5jMB1nJugjzoXYUUtA2H_EmKg/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27409
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 197, N° 4510 (03/2007) . - p. 18-22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006367 - Périodique Bibliothèque principale Documentaires Disponible The pre-treatment study of varied woods with high performance light stabilisers / Yung-Chi Yang in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4637 (12/2017)
[article]
Titre : The pre-treatment study of varied woods with high performance light stabilisers Type de document : texte imprimé Auteurs : Yung-Chi Yang, Auteur ; Yu-Shu Sung, Auteur ; Yin-Ting Lai, Auteur ; Chung-Han Lu, Auteur ; Hsiao-Fang Chiu, Auteur ; Chih-Hsien Chein, Auteur ; Steven Lee, Auteur ; Nick Lee, Auteur ; I-Chyang Lin, Auteur ; Yao-Hsing Huang, Auteur Année de publication : 2017 Article en page(s) : p. 31-35 Langues : Anglais (eng) Catégories : Analyse de variance En statistique, l'analyse de la variance (terme souvent abrégé par le terme anglais ANOVA : ANalysis Of VAriance) est un ensemble de modèles statistiques utilisés pour vérifier si les moyennes des groupes proviennent d'une même population. Les groupes correspondent aux modalités d'une variable qualitative (p. ex. variable : traitement; modalités : programme d'entrainement sportif, suppléments alimentaires ; placebo) et les moyennes sont calculés à partir d'une variable continue (p. ex. gain musculaire).
Ce test s'applique lorsque l'on mesure une ou plusieurs variables explicatives catégorielles (appelées alors facteurs de variabilité, leurs différentes modalités étant parfois appelées "niveaux") qui ont de l'influence sur la loi d'une variable continue à expliquer. On parle d'analyse à un facteur lorsque l'analyse porte sur un modèle décrit par un seul facteur de variabilité, d'analyse à deux facteurs ou d'analyse multifactorielle sinon. (Wikipedia)
Bois -- Revêtements
Bois -- Vernis
Essais accélérés (technologie)
Photostabilité
Stabilisants (chimie)
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : The authors discuss how the pre-treatment of wood surfaces prior to tha application of a clear top coat can extend the protection of lignin from UV light degradation. Note de contenu : - FIGURES : Route of photodegradation of lignin - 2. Different type of woods - 3. The effect of Southern Pine coated with acrylic resin after weathering for 300hr (prediction profiler - 4. The effect of Southern Pine and pretreatments with butyl carbitol after weathering for 300hr (prediction profiler - 5. The effect of Southern Pine and pretreatments with IPA after weathering for 300hr (prediction profiler) - 6. Photo of Douglas Fir after weathering test for 300hr - 7. Photo of African Teak after weathering test for 300hr - 8. Photo of Southern Beech after weathering test for 300hr - 9. Photo of Southern Pine after weathering test for 300hr - 10. Photo of Luanta Fir after weathering test for 300hr
- TABLES : 1. Compositions of waterborne model formulation - 2. Compositions of wood pretreatment model formulation - 3. Solubility parameter of different co-solvents - 4. Details of screening design and test results - 5. Analysis of variance (ANOVA) - 6. Parameter estimates - 7. Effect testsEn ligne : https://drive.google.com/file/d/1a42uNi_6uF9CwoknFsYw0oJFK_nT9ZWY/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29647
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4637 (12/2017) . - p. 31-35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19443 - Périodique Bibliothèque principale Documentaires Disponible The study of colour fastness of commercial microencapsulated photoresponsive dye applied on cotton, cotton/polyester and polyester fabric using a pad-dry-cure process / Mateja Kert in COLORATION TECHNOLOGY, Vol. 133, N° 6 (12/2017)
[article]
Titre : The study of colour fastness of commercial microencapsulated photoresponsive dye applied on cotton, cotton/polyester and polyester fabric using a pad-dry-cure process Type de document : texte imprimé Auteurs : Mateja Kert, Auteur ; Marija Gorjanc, Auteur Année de publication : 2017 Article en page(s) : p. 491-497 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants photochromiques
Colorimétrie
CotonLe coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Encapsulation
Microcapsules
Photostabilité
Polyesters
Résistance à l'abrasion
Résistance au lavage
Solidité de la couleur
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Commercial microencapsulated photoresponsive dye was applied on cotton, polyester/cotton and polyester fabric using a pad-dry-cure process. Colour fastness of the photoresponsive fabrics to washing, wet cleaning, dry cleaning, rubbing and light was investigated. The CIELAB colour values of the fabrics before and after testing were measured using a reflectance spectrophotometer, and the colour differences were calculated to evaluate the fastness properties. The fabrics had better colour fastness to wet cleaning and washing than to dry cleaning. The fabrics showed higher colour fastness to wet than to dry rubbing. The photoresponsiveness of the fabrics decreased with prolonged exposure time to artificial light due to low photostability of the microcapsules. Note de contenu : - Fabrics - Coating of photochromic microcapsules into the textile
- Colour measurements
- Colour fastness to washing
- Colour fastness to wet and dry cleaning
- Colour fastness to rubbing
- Colour fastness to lightDOI : 10.1111/cote.12297 En ligne : https://drive.google.com/file/d/17qm79txEqEJnF7lNTUCI1CFopSiJPf6k/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29496
in COLORATION TECHNOLOGY > Vol. 133, N° 6 (12/2017) . - p. 491-497[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19395 - Périodique Bibliothèque principale Documentaires Disponible The synthesis, photophysical and thermal properties of new anthrapyrimidine colorants / Sreejit R. Menon in COLORATION TECHNOLOGY, Vol. 127, N° 6 (2011)
[article]
Titre : The synthesis, photophysical and thermal properties of new anthrapyrimidine colorants Type de document : texte imprimé Auteurs : Sreejit R. Menon, Auteur ; Ganapati S. Shankarling, Auteur Année de publication : 2011 Article en page(s) : p. 383-389 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anthrapyrimidine
Colorants
Diméthylsulfoxyde
Photostabilité
Polypropylène
Solvatochromisme
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The thermal and photostability of novel anthrapyrimidine-containing colorants obtained by the condensation of various substituted aromatic amines with 6-bromo-7H-benzo[e]perimidin-7-one are described. The colorants were characterised by proton nuclear magnetic resonance, elemental analysis and mass spectra. Thermogravimetric analysis showed that these colorants are thermally stable up to 250 °C. The UV–visible absorption spectra of the colorants were studied in solvents of differing polarity; the colorants exhibited slight positive solvatochromism. The photostability studies in dimethyl sulphoxide solvent were recorded by monitoring photodegradation of the colorants spectrophotometrically using a standard calibration curve. All the colorants exhibited excellent photostability. The light fastness study of two colorants in polypropylene showcases their ability as useful colorants for plastics. Note de contenu : - EXPERIMENTAL : Materials and analysis - Synthesis of 1-amino-4-bromo-anthraquinone - Synthesis of 6-bromo-7H-benzo[e]perimidin-7-one - Synthesis of colorants (5a-5e)
- RESULTS AND DISCUSSION : Synthesis of anthrapyrimidine colorants - Photophysical properties of colorants 5a-5e - Thermal stability of colorants 5a-5e - Photostability of colorants 5a-5e - Light fastness of colorants 5c and 5e extruded with polypropyleneDOI : 10.1111/j.1478-4408.2011.00330.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12652
in COLORATION TECHNOLOGY > Vol. 127, N° 6 (2011) . - p. 383-389[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13476 - Périodique Bibliothèque principale Documentaires Disponible The use of mixed tocopherols to improve UV and heat resistance of leather / Cheng-Kung Liu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 1 (01/2010)
[article]
Titre : The use of mixed tocopherols to improve UV and heat resistance of leather Type de document : texte imprimé Auteurs : Cheng-Kung Liu, Auteur ; Liu Linshu, Auteur ; Nicholas P. Latona, Auteur ; Mila Aldema-Ramos, Auteur Année de publication : 2010 Article en page(s) : p. 9-15 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux
Cuirs et peaux -- Propriétés mécaniques
Photostabilité
Résistance au rayonnement ultraviolet
Résistance thermique
Solidité de la couleur
Vitamine EIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Most leather products are constantly exposed to outdoor environments, therefore UV and heat resistance are very important qualities, particularly for non-chrome-tanned (chrome-free) leather. In recent years, we have addressed this problem and focused on an environmentally friendly finishing process that will improve the UV and heat resistance of leather. Tocopherols are well-known antioxidants commonly used in the cosmetic and food industries. Tocopherols have been reported as potent free radical scavengers and highly protective agents for collagen fibers against UV and heat damage. Our previous research on alpha-tocopherol showed that it significantly improved UV and heat resistance of leather. Mixed tocopherols, on the other hand, are more abundant and are produced from a renewable source such as soybeans. We have investigated its potential to be applied to leather for improving UV and heat resistance. Experiments were conducted by adding 5 to 12% mixed tocopherols to the grain layer finishes of chrome-free leather. The treated samples were tested in a weatherometer, where they were exposed to artificial sunlight at a high temperature. Colorfastness and mechanical properties tests showed that mixed tocopherols significantly improved UV and heat resistance of leather. Note de contenu : - EXPERIMENTAL : Materials and procedure : Leather preparation - Scanning Electron Microscopy - Leather properties testing
- RESULTS AND DISCUSSION : Color lightfastness - tensile properties - Stiffness - Dynamic mechanical behavior
- Table 1 : Coating experimentsEn ligne : https://drive.google.com/file/d/1Ixua0RX4chrgsMRgnyMy1z5ViqLMIkyk/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8090
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CV, N° 1 (01/2010) . - p. 9-15[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011907 - Périodique Bibliothèque principale Documentaires Disponible Treatment of hides with tara-modified protein products / Maryann M. Taylor in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 12 (12/2013)
PermalinkUnique rare earth pigments for more thermally comfortable leathers in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 7 (07/2014)
PermalinkUser-friendly UV / Zo-Hong Tsai in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 197, N° 4512 (05/2007)
PermalinkPermalinkWeather stabilization and pigmentation of UV-curable powder coatings / Misev Ljubomir in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 891 (04/1999)
PermalinkWhiter wool from fleece to fabric / Keith R. Millington in COLORATION TECHNOLOGY, Vol. 127, N° 5 (2011)
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