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PAINTINDIA . Vol. LVIII, N° 7Mention de date : 07/2008Paru le : 15/07/2008 |
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Ajouter le résultat dans votre panierVOC free water thinnable coatings based on unsaturated polyester / Anuradha Satpute in PAINTINDIA, Vol. LVIII, N° 7 (07/2008)
[article]
Titre : VOC free water thinnable coatings based on unsaturated polyester Type de document : texte imprimé Auteurs : Anuradha Satpute, Auteur ; L. T. Gangotri, Auteur Année de publication : 2008 Article en page(s) : p. 75-88 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Ammoniac
Anhydride maléique
Emulsions -- Stabilité
Polyesters insaturésLes résines de polyesters insaturés (UP) sont obtenues par polycondensation
d’un ou de plusieurs diacides avec un ou plusieurs glycols, l’un, au moins, des constituants contenant une double liaison éthylénique susceptible de réagir ultérieurement sur un composé vinylique, acrylique ou allylique.
Par le terme résine polyester, on désigne en fait la dissolution du prépolymère polyester insaturé dans un solvant copolymérisable, le plus utilisé étant le styrène. C’est sous cette forme liquide que les résines polyesters sont livrées aux transformateurs.
Après addition de différents adjuvants, charges et renforts, divers procédés de transformation provoquent, sous l’action d’un système catalytique approprié, la copolymérisation finale de la résine en un objet thermodurcissable.
Les polyesters insaturés sont d’un usage relativement ancien (1950), essentiellement
dans le bâtiment (moulage au contact). Ils ont connu un renouveau important à partir de 1980, en particulier au niveau des formulations et de la fiabilité des procédés grâce au développement de technologies industrielles de moulage par injection et par compression dans l’industrie automobile.
Propylène glycol
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Six different polyester resins of 3000 molecular weight having carboxy terminating groups were prepared by reacting propylene glycol with varying combination ofmaleic anhydride and phthalic anhydride. Liquid polyester could be prepared by using maleic anhydride alone in conjunction with propylene glycol. These polyesters were emulsified in water by using ammonia as neutralizing agent giving stable emulsions with excellent film properties. No or little volatile organic co-solvent was utilized for this purpose hence the VOC level of polyester emulsions containing high quantity of maleic anhydride was zero while in all other polyester emulsions it was only 2.4%. These polyester emulsions can be thinned down by water upto 100%. The high maleic content polyesters were foundto give high scratch hardness, flexibility with excellent water, chemicals and solvent resistance. These emulsions were converted into emulsion paints and evaluated for their film properties. The surface drying time of these emulsion paints were found to be within an hour. Note de contenu : - Water thinnable coatings based on polyesters
- Composition of polyester resin
- Preparation & evaluation of polyester resins
- Preparation & evaluation of polyester paint
- Stability of polyester emulsion
- Poyester emulsions
- Preparation & evaluation of emulsion paint
- Performance test
- Stability of emulsion
- Emulsion paint
- Stability of emulsion paint
- Performance testPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12104
in PAINTINDIA > Vol. LVIII, N° 7 (07/2008) . - p. 75-88[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010766 - Périodique Bibliothèque principale Documentaires Disponible Blends of CNSL phenol-formaldehyde-ketonic resin : a cost-effective endeavour to enhance performance of conventional CNSL coatings / Vilas D. Athawale in PAINTINDIA, Vol. LVIII, N° 7 (07/2008)
[article]
Titre : Blends of CNSL phenol-formaldehyde-ketonic resin : a cost-effective endeavour to enhance performance of conventional CNSL coatings Type de document : texte imprimé Auteurs : Vilas D. Athawale, Auteur ; Narendra J. Shetty, Auteur Année de publication : 2008 Article en page(s) : p. 100 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Baume de cajou
Cyclohexanone
Formaldéhyde
Polycyclohexanones
RevêtementsIndex. décimale : 667.9 Revêtements et enduits Résumé : Cashew nut shell liquid (CNSL) and Phenol formaldehyde were synthesised in the laboratory and subsequently blended with ketonic (Cyclohexanone formaldehyde) resin. The physico-mechanical and performance properties such as drying time, hardness, adhesion, flexibility, gloss, skinning tendency, corrosion, impact resistance and chemical resistance were examined at various compositions of the modified CNSL resin and ketonic resin blend. The 50:50 percent (w/w) of CNSL-phenol-formaldehyde- Ketonic (Cyclohexanone formaldehyde) resin blend exhibited enhanced coating properties as compared to any other proportions of the blend. Note de contenu : - Morphological study of blends
- Driers
- Tests carried out for the study of coating propertiesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12105
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Code-barres Cote Support Localisation Section Disponibilité 010766 - Périodique Bibliothèque principale Documentaires Disponible Functional additives for bio-mimic self cleaning coatings / Ravi Dara in PAINTINDIA, Vol. LVIII, N° 7 (07/2008)
[article]
Titre : Functional additives for bio-mimic self cleaning coatings Type de document : texte imprimé Auteurs : Ravi Dara, Auteur ; Ghanshyam Jaiswal, Auteur Année de publication : 2008 Article en page(s) : p. 101-110 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact
Chimie biomimétique
Hydrophobie
Oléophobie
Revêtement auto-nettoyant:Peinture auto-nettoyante
Revêtements anti-graffitisIndex. décimale : 667.9 Revêtements et enduits Résumé : Stain resistant and easy to clean coatings is in great demand and the focus of a lot of research activity globally. Additives based on fluoro (oleophobic) and silicone (hydrophobic) chemistry have been developed that provide easy to clean coatings. Being surface active they lower the surface energy of the coating thereby making the coating either difficult to stain in the first place or easy to clean. Such additives also have other benefits such as protecting the coating from micro-organisms, leading to improved sanitation and cleanliness, improved water and chemical resistance; anti-graffiti properties and giving the coating a new look for a longer time. Such addtives have found their source of inspiration from nature (biomimetic); particularly the lotus leaf which shows excellent hydrophobicity (a very high contact angle). This paper focuses on the chemistry of easy clean additives, how they work, and their use in coatings; highlight the need for a permanent effect, their advantages and current research in the field. Note de contenu : - Biomimic self cleaning coatings
- The lotus lea
- Contact angle hysteresis
- FUNCTIONAL ADDITIVES : Nano TiO2 additive : photo catalysis (light driven combustion)
- FLUORO ADDITIVES : FLUOROSURFACTANTSPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12106
in PAINTINDIA > Vol. LVIII, N° 7 (07/2008) . - p. 101-110[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010766 - Périodique Bibliothèque principale Documentaires Disponible Nano additifs : a review / Bhupesh Marathe in PAINTINDIA, Vol. LVIII, N° 7 (07/2008)
[article]
Titre : Nano additifs : a review Type de document : texte imprimé Auteurs : Bhupesh Marathe, Auteur ; Abhishek Kantak, Auteur Année de publication : 2008 Article en page(s) : p. 113-132 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alumine
Argent
Colloides
Dioxyde de titane
Dispersions et suspensions
Nanoparticules
Or
Oxyde de cérium
Revêtements -- Additifs
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.Index. décimale : 667.9 Revêtements et enduits Résumé : Nano-scale materials are said to have unique and potentially valuable properties in comparison to the same materials that exist naturally in larger than nano-scales, which can include greater tensile strength, enhanced electrical conductivity, and the ability to contribute to new chemical synthesis pathways. Nanotechnology is the science of manipulating materials at the atomic and molecular level to develop new or enhanced materials and products. One of the most advanced markets in the field of nanotechnology is in the area of modifying surface properties using nanotechnology. By using certain nanosized oxides well dispersed into the coating formulation, the mechanical properties of these coatings can be improved significantly. Especially nanosized alumina and silica is ofinterest because high-gloss, high-transparent coatings can be achieved by using nanosized fillers instead of micron-sized materials. Due to the nature of the particles, the viscosity of those dispersions is very low since there is no tendency for bridging flocculation, as for example in materials made by flame pyrolysis. When incorporating a small amount of nano alumina in a UV-curable coating system, the resistance against mechanical scratching can be increased significantly. Nano-Additives include stable colloidal suspensions of titania, ceria and alumina. These are the most technologically advanced nanomaterials available, with particle sizes less than 10 nanometers. The advantage of these Nano-Additives includes no use of surfactants, yet our colloidal suspensions remain stable. These Nano-Additives for coatings that must exhibit extraordinary ultraviolet light resistance and they have proven to help prevent marring and scratching as well. Nano silver is used as antimicrobial additive in hygienic coating application. Comb-shaped block copolymer and reduction by tertiary amine, which helps production of stable and highly concentrated pastes of Gold nanoparticles. Electronics, optics, catalysis, colorants and surface metal coatings are the possible fields of application of these gold nano particles pastes. Note de contenu : - Need of nanotechnology in coatings
- Incorporation of nanoparticles in coating
- NANO ADDITIVES : Nano sized alumina and silica - Synthesis of nanoparticles - Nano additive for better scratch resistance - Testing - Scratch resistance.
- SURFACE MODIFIED NANOPARTICLES
- NANO ADDITIVE PROPOSED THEORY : Alumina vs. silica particles
- NANO ADDITIVE OF STABLE COLLOIDAL SUSPENSIONS OF NANO TITANIA, NANO CERIA AND NANO ALUMINA
- NANO SILVER : ULTIMAGE BACTERIA KILLER : Fighting fungal growth with nano silver
- NANO GOLD : Synthesis of production of concentrated gold nanoparticle pastes - Production of concentrated gold nanoparticle pastes - Application as colourants
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12107
in PAINTINDIA > Vol. LVIII, N° 7 (07/2008) . - p. 113-132[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010766 - Périodique Bibliothèque principale Documentaires Disponible Nanotechnology and coatings Q&A / Vinayak M. Natu in PAINTINDIA, Vol. LVIII, N° 7 (07/2008)
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Titre : Nanotechnology and coatings Q&A Type de document : texte imprimé Auteurs : Vinayak M. Natu, Auteur Année de publication : 2008 Article en page(s) : p. 156-159 Langues : Anglais (eng) Catégories : Nanostructures
Polymères
Polymères inorganiques
Revêtements
Systèmes auto-assemblésIndex. décimale : 667.9 Revêtements et enduits Résumé : - What is self-assembly ?
- What is the potential of self-assembly in designing new coatings ?
- What are the characteristics of the organic polymers at nanoscale ?
- How do the organic nanostructures differ from the inorganic nanostructures ?Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12108
in PAINTINDIA > Vol. LVIII, N° 7 (07/2008) . - p. 156-159[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010766 - Périodique Bibliothèque principale Documentaires Disponible
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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010766 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |