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Effect of pigment particle size in coating application / Sanket Shinde in PAINTINDIA, Vol. LXIX, N° 12 (12/2019)
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Titre : Effect of pigment particle size in coating application Type de document : texte imprimé Auteurs : Sanket Shinde, Auteur Année de publication : 2019 Article en page(s) : p. 72-74 Langues : Anglais (eng) Catégories : Floculation
Pigments
Résistance aux conditions climatiques
Revêtements organiques
Rhéologie
Taille des particules
Transparence (optique)Index. décimale : 667.2 Colorants et pigments Résumé : Pigments come in various forms - inorganic, organic and what is often referred to as pearlescent or metalscent. The variations of pigments constitute the majority of coating formulations, and the majority of coating formulations, and can dictate the color, vibrancy, durability, protectivity and aesthetic quailty of a finished product. Note de contenu : - Flocculation
- Tint strength
- Transparency
- Flatting, transparency, gloss
- Film appearance and industrial coatings
- Rheological properties and stability
- Chalking weather resistanceEn ligne : https://drive.google.com/file/d/1RWid5v-AnCI7zoif0Lc9_NxiLgf_0aZu/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33643
in PAINTINDIA > Vol. LXIX, N° 12 (12/2019) . - p. 72-74[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible Effective protection and repair of the hair from daily weathering / Irene Montano in SOFW JOURNAL, Vol. 144, N° 3 (03/2018)
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Titre : Effective protection and repair of the hair from daily weathering Type de document : texte imprimé Auteurs : Irene Montano, Auteur ; Franziska Wandrey, Auteur Année de publication : 2018 Article en page(s) : p. 10-14 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antioxydants
Antiradicalaire
Cheveux -- Soins et hygiène
Cheveux -- Teinture
Cosmétiques
Essais de résilience
Extraits de plantes:Extraits (pharmacie)
Protection thermique
Résistance aux conditions climatiquesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Hair weathering is the deterioration of the hair shaft from root to tip and is the result of a series of cosmetic and environmental factors. Cosmetic practices such as brushing, combing, dyeing, straightening, perming, etc., as well as environmental factors such as exposure to UV light and polluted air can induce structural damage to the F-layer and the hair fiber. The cuticle becomes raised and porous, which exposes the cortex to further damage. A decrease in hair shine, color, elasticity and strength is observed, which eventually leads to hair damage. In different studies measured utilizing state-of-the-art technologies, a hair care ingredient that combines tara tannins derived from Caesalpinia spinosa pods and organic sunflower sprout extract (trade name KeraGuard), revealed a capacity to protect hair against free radicals and physical stresses. It was also shown to protect dyed hair from color fading and heat damage as well as to repair chemically treated hair. Note de contenu : - INTRODUCTION : The hair unit - The F-layer - The hair is constantly exposed to stress factors
- METHODS : Determination of the antioxidant power - Analysis of the radical scavenging properties by ESR spectroscopy - Electron spin resonance (ESR) spectroscopy on bleached hair - Hair color protection - Heat damage test
- RESULTS : Antioxidant power compared to that of vitamin C - Antioxidant protection effect on hair - Hair color protection against sequential washing and UV exposure - Restoraton of bleached hair - Protection of the hair from heat damage
- FIGURES : 1. Structure of the cuticle F-layer - 2. Antioxidant power compared to that of vitamin C and green tea - 3. Radical scavenging effect. Antioxidant protection effect at 0,5% and 1.0% active ingredient with/without washing - 4. Hair color protection effect against washing and UV exposure in comparison to the placebo - 5. Repair of bleached hair. Restoration effect of the hair after bleaching using 0.5% and 1.0% active ingredientEn ligne : https://drive.google.com/file/d/1io77hGKB52fP6fVx8j1AX16-_-gxZoar/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30350
in SOFW JOURNAL > Vol. 144, N° 3 (03/2018) . - p. 10-14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19758 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Effects without drawbacks : Special encapsulation makes metallic effects inert and weather-resistant Type de document : texte imprimé Auteurs : Laurent Deloux, Auteur ; Marc Hunger, Auteur ; Gordon Price, Auteur ; Volker Wilhelm, Auteur Année de publication : 2018 Article en page(s) : p. 89-93 Langues : Anglais (eng) Catégories : Aluminium L'aluminium est un élément chimique, de symbole Al et de numéro atomique 13. C’est un métal pauvre, malléable, de couleur argent, qui est remarquable pour sa résistance à l’oxydation13 et sa faible densité. C'est le métal le plus abondant de l'écorce terrestre et le troisième élément le plus abondant après l'oxygène et le silicium ; il représente en moyenne 8 % de la masse des matériaux de la surface solide de notre planète. L'aluminium est trop réactif pour exister à l'état natif dans le milieu naturel : on le trouve au contraire sous forme combinée dans plus de 270 minéraux différents, son minerai principal étant la bauxite, où il est présent sous forme d’oxyde hydraté dont on extrait l’alumine. Il peut aussi être extrait de la néphéline, de la leucite, de la sillimanite, de l'andalousite et de la muscovite.
L'aluminium métallique est très oxydable, mais est immédiatement passivé par une fine couche d'alumine Al2O3 imperméable de quelques micromètres d'épaisseur qui protège la masse métallique de la corrosion. On parle de protection cinétique, par opposition à une protection thermodynamique, car l’aluminium reste en tout état de cause très sensible à l'oxydation. Cette résistance à la corrosion et sa remarquable légèreté en ont fait un matériau très utilisé industriellement.
L'aluminium est un produit industriel important, sous forme pure ou alliée, notamment dans l'aéronautique, les transports et la construction. Sa nature réactive en fait également un catalyseur et un additif dans l'industrie chimique ; il est ainsi utilisé pour accroître la puissance explosive du nitrate d'ammonium.
Dioxyde de titane
Encapsulation
Essais accélérés (technologie)
Matières plastiques -- Additifs
Photostabilité
Pigments à effets spéciaux
Pigments nacrés
Polypropylène
Résistance aux conditions climatiques
Stabilisants (chimie)Index. décimale : 668.4 Plastiques, vinyles Résumé : Pearlescent pigments produce striking effects in thermoplastics. However, the natural photoactivity of TiO₂ influences the stability of the polymer matrix. Unlike off-the-shelf organic stabilizations, the inorganic "Way" technology significantly reduces the photoactivity of effect pigments, which in turn opens up new design possibilities for plastic products with high UV exposure. Note de contenu : - Metallic effects with pigments of high stability
- Temperature-stable pigment encapsulation for hih resistance
- Full effect due to robust stabilization
- Proven functionality and color stability
- chemically durably stable
- Figure : Whether in automobiles, consumer goods or mobile devices, metallic luster is in demand. Organic-coated TiO2 pearlescent pigments have been established in coating systems for many years. Now the trend leans toward mass-dyed plastic components that include new stabilizing additives
- Fig. 1 : Scanning electron microscope (SEM) image of a TiO2-based pearlescent pigment
- Fig. 2 : Comparative tests on dark yellowing with different types of encapsulation. Unlike the standard pigment on the right, Iriodin 119 way shows no yellwoing after 284h of exposure to UV radiation
- Fig. 3 : SEM image of pearlescent pigments Iriodin 103 Way. The new stabilization does not disturb does not disturb the visual properties of the pigment
- Fig. 4 : Relative photoactivity of different types of encapsulation, which has a direct impact on the overall system's light resistance and is lowest with the pigment with Way coating
- Fig. 5 : Color change Delta E : Iriodin 6163 Way compared to Iriodin 6163 and a competitor's pearlescent with organic coating, each with 1% in PMMA after 5000 h in the sun teste according to DIN EN ISO 11341
- Fig. 6 : Delta E color change of various pigments with 1% in PP, immersed for 35 days in 5% ammonia solution
- Fig. 7 : Microscopic cracks after 400 h in the sun tester according to DIN EN ISO 11341 of Iriodin 6163 way and aluminum flake pigment with 1% in PP
- Fig. 8 : Set-up of a drop test to determine the mechanical stability when using 1% Iriodin 6163 Way or 1% aluminum pigment in PP
- Table 1 : Result of a micromechanical scratch test to quantify the deformation when using 1 % Iriodin 6163 Way or 1 % aluminum pigment in PP. Conditions: 1000 h in the sun tester according to DIN EN ISO 11341
- Table 2 : Results of a drop test to determine the mechanical stability (drop height to material fracture). Two different PP specimens, respectively with 1 % Iriodin 6163 Way or 1 % aluminum pigment were compared after six months of outdoor weatheringEn ligne : https://www.kunststoffe.de/en/journal/archive/article/special-encapsulation-make [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31461
in KUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 10 (10/2018) . - p. 89-93[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20275 - Périodique Bibliothèque principale Documentaires Disponible Emerging research trends in the field of polyurethane and its nanocomposites : Chemistry, Synthesis, Characterization, Application in coatings and Future perspectives / Swati Jakhmola in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
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Titre : Emerging research trends in the field of polyurethane and its nanocomposites : Chemistry, Synthesis, Characterization, Application in coatings and Future perspectives Type de document : texte imprimé Auteurs : Swati Jakhmola, Auteur ; Sonalee Das, Auteur ; Kingshuk Dutta, Auteur Année de publication : 2024 Article en page(s) : p. 137-172 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Charges (matériaux)
Matériaux autoréparants
Matériaux hybrides
Nanoparticules
Polyuréthanes
Recyclabilité
Résistance aux conditions climatiques
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Polyurethane (PU) coatings are widely used in various industries due to their excellent mechanical strength, along with abrasion, chemical and weather resistance. Recently, use of dynamic bonds to increase the recyclability and self-healing properties of PU is being extensively explored. Incorporation of nanofillers into the PU matrix can further enhance their performance as a coating matrix for application demanding thermal stability, mechanical strength, abrasion resistance, corrosion resistance, foul resistance, smudge resistance and UV resistance. It has been reported that inclusion of nanofillers, like nano-silica, graphene, organoclay, zinc oxide and titanium dioxide can provide enhanced functionalities to the PU matrix owing to their small size and high surface area-to-volume ratio to design tailor made PU coatings with desired properties. This review highlights the classification of PUs based on different dynamic chemistry for imparting self-healing and recyclability properties to the polymer matrix. Further, it will also provide a detailed insight regarding various polyol sources used for the synthesis of PUs, technologies adopted to incorporate nanofillers into the PU matrix for developing PU nanocomposite for coating applications and properties associated with these coatings. A brief conclusion highlighting the present challenges and future prospects of the PU nanocomposite coatings is also presented. Note de contenu : - Polyurethane based on dynamic chemical bonds
- Development of polyurethane coatings from different bio-based sources
- Development of polyurethane coatings with different nanofillers
- Nano-silica
- Applications of polyurethane nanocomposites in coating technology
- Present challenges and prospect
ctsDOI : https://doi.org/10.1007/s11998-023-00841-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00841-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40439
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 1 (01/2024) . - p. 137-172[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24443 - Périodique Bibliothèque principale Documentaires Disponible Enhanced corrosion resistance and weathering resistance of waterborne epoxy coatings with polyetheramine-functionalized graphene oxide / Jing Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 1 (01/2020)
[article]
Titre : Enhanced corrosion resistance and weathering resistance of waterborne epoxy coatings with polyetheramine-functionalized graphene oxide Type de document : texte imprimé Auteurs : Jing Li, Auteur ; Wenwen Chan, Auteur ; Jincan Cui, Auteur ; Hanxun Qiu, Auteur ; Guangzhi Yang, Auteur ; Shiyou Zheng, Auteur ; Junhe Yang, Auteur Année de publication : 2020 Article en page(s) : p. 171-180 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Caractérisation
Epoxydes
Greffage (chimie)
Oxyde de graphène
Polymères en émulsion
Résistance aux conditions climatiques
Revêtements -- Détérioration
Revêtements -- Effets du rayonnement ultraviolet
Revêtements en phase aqueuse
Revêtements organiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Polyetheramine (D230), an epoxy curing agent, was grafted on graphene oxide (GO) surfaces, which can be stably dispersed in a waterborne curing agent for more than 8 months. Waterborne epoxy coatings reinforced by D230-functionalized GO (DGO) were prepared on carbon steel surfaces. According to the electrochemical impedance spectra, the impedance modulus at 0.1 Hz remained at 2.2 × 109 Ω after 150 days of immersion in 3.5% NaCl electrolytes for 0.2 wt% DGO-reinforced waterborne epoxy coatings, while that of the neat epoxy coatings dropped below 1 × 107 Ω after 10 days. Besides, the addition of DGO enhanced the weathering resistance of waterborne epoxy coatings. After 60 days of the UV aging test, the yellow color index of neat epoxy coatings was 1.6 times that of 0.5 wt% DGO/epoxy coatings. The residual pencil hardness of the 0.5 wt% DGO/epoxy coatings was three levels higher than that of neat epoxy coatings. Note de contenu : - EXPERIMENTAL : Preparation of DGO - Preparation of the DGO/epoxy composite coatings - Characterizations
- RESULTS AND DISCUSSION : Functionalization of GO - Morphologies of the DGO/epoxy coatings - Corrosion protection properties of the DGO/epoxy coatings - Weathering resistance of the DGO/epoxy coatingsDOI : 10.1007/s11998-019-00252-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00252-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33736
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