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PAINTINDIA . Vol. LXIX, N° 11Mention de date : 11/2019Paru le : 15/11/2019 |
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Ajouter le résultat dans votre panierA review on : CNSL based polyurethane, polyester and polyurea coatings / Sonam Saxena in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
[article]
Titre : A review on : CNSL based polyurethane, polyester and polyurea coatings Type de document : texte imprimé Auteurs : Sonam Saxena, Auteur ; Narayani Rajagopalan, Auteur ; Chinmaya Nayak, Auteur Année de publication : 2019 Article en page(s) : p. 55-64 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Noix de cajou et constituants
Polyesters
Polyurée
Polyuréthanes
Ressources renouvelables
Revêtements -- Analyse:Peinture -- Analyse
Revêtements organiques
Structure chimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Cashew nut shell liquid (CNSL) and its main derivative, cardanol offers a number of polymerization reaction due to the inherent chemical structure containing a reactive phenolic group and an unsaturated aliphatic chain in the meta position of the aromatic ring. Also, as a natural product, CNSL is an alternative resource to synthesize various resins and coatings contributing to green and sustainable technology. The present review focuses the work done with CNSL and its derivatives to develop coatings namely, polyurethane, polyester and polyurea coating along studies done with respect to the functional properties of the with coatings developed. Note de contenu : - SYNTHESIS AND CHARACTERISTICS OF CNSL
- CNSL BASED COATINGS : CNSL based polyurethane coatings - CNSL based polyurea coating - CNSL based polyester coating
- Fig. 1 : Chemical composition of CNSL
- Fig. 2 : Decarboxylation of anacardic acid to cardanol
- Fig. 3 : Percentage water absorption measured for all the cured films after 24h dip test
- Fig. 4 : DSC spectrum for N-75 cured coatings and DSC spectrumfor N-3390 cured coatings
- Fig. 5 : Tafel graphs for N-75 cured coatings in 3.5% NaCl solution and Tafel graphs for N-3390 cured coatings in 3.5% NaCl solution
- Fig. 6 : FTIR spectra for NC-514 and CC evaluated in chloroform solvent
- Fig. 7 : TGA graph of NIPU coatings
- Fig. 9 : Bode plots of 2K-aqueous polyurethane coatings HDI based system and IPDI based system
- Fig. 10 : Synthesis of epoxidized cardanol and cardanol based polyols
- Fig. 11 : DSC thermograms of UV-PUD films
- Fig. 12 : TGA curves of the cured films
- Fig. 13 : TGA of HDI and IPDI based coating
- Fig. 14 : Bode plot of HDI and IPDI based coatings
- Fig. 15 : Tafel plots of HDI and IPDI based coatings
- Table 1 : Physical and chemical properties of CNSLEn ligne : https://drive.google.com/file/d/1stSa3ITAJ3XsITtOfS2WPbm8xfR5xXMj/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33634
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Code-barres Cote Support Localisation Section Disponibilité 21460 - Périodique Bibliothèque principale Documentaires Disponible Silica aerogel : a comprehensive review on its synthesis, properties and role in designing thermal insulation coatings / Narayani Rajagopalan in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
[article]
Titre : Silica aerogel : a comprehensive review on its synthesis, properties and role in designing thermal insulation coatings Type de document : texte imprimé Auteurs : Narayani Rajagopalan, Auteur ; Chinmaya Nayak, Auteur Année de publication : 2019 Article en page(s) : p. 66-86 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aérogels
Angle de contact
Composés inorganiques -- Synthèse
Construction -- Matériaux
Diffusivité thermique
Dioxyde de silicium
Gel de silice
Isolants thermiques
Micrographie
Revêtements
Thermocinétique
TransmittanceLa transmittance, en général, est le rapport caractérisant la transmission d'une grandeur dans un système. Elle se calcule par le rapport entre la grandeur en entrée et en sortie.
En optique, la transmittance d'un matériau ou d'un filtre est la fraction du flux lumineux le traversant. Elle est également nommée facteur de transmission mais aussi transparence dans le domaine de la photographie.
VitrageIndex. décimale : 667.9 Revêtements et enduits Résumé : Aerogels due to its nano-sized porous structure possess extremely low density (~0.003 g/cm3)10mW/mK) and solids with high porosity very low conductivity (~10mW/mK). Silica aerogel namely, has found profound interest among researchers and has been extensively studied for their thermal, mechanical and hydrophobic properties. They have 90% porosity with a thermal conductivity lower than that of air, and this makes silica aerogel an important media for conceptualising it as a highly insulating material. The present review focuses the various work done on silica aerogel based coatings and the functionality of silica aerogel as an insulating material. Note de contenu : - SYNTHESIS AND PROPERTIES OF SILICA AEROGEL : Synthesis - Precursors for sol-gel synthesis of silica aerogel - Aging of aerogel - Drying of aerogel - Characteristic properties of silica aerogel
- DESIGN ASPECT FOR DEVELOPMENT OF SILICA AEROGEL BASED INSULATION COATING SYSTEMS : Building applications - Window glazings
- Fig. 1 : Aerogel structure network and SEM micrographs of carbon and silica aerogel
- Fig. 2 : Step-wise synthesis route of aerogel
- Fig. 3 : SEM and TEM micrographs of silica aerogel
- Fig. 4 : Thermal and solar properties of HILIT/HILIT + aerogel glazing (15mm aerogel) compared with typical commercially availagle low-energy glazing
- Fig. 5 : SEM micrographs of the aerogel films : 80 nm thick xerogel, 160 nm thick aerogel, 340 nm thick aerogel and 480 nm thick aerogel (dip-coating method). SEM micrographs of the aerogel films : 1 lm thick aerogel, 2 lm thick aerogel, and 10 lm thick aerogel (multiple spin-coating)
- Fig. 6 : Transmittance of the silica aerogel coatings modified with PEG : 0, 10, 20, 30 and 40 wt%, respectively
- Fig. 7 : Surface temperature of insulation coatings at 75 mils DFT on steel heated to 180 F
- Fig. 8 : Panels coated with insulation coatings, after 2016 hours of salt spray exposure
- Fig. 9 : Contact angle of unmodified SiO2 and modified SiO2 aerogel
- Fig. 10 : Change curve of temperature for different mass fraction of SiO2 aerogel coatings
- Fig. 11 : Change curve of thermal conductivity in different mass fraction of SiO2 aerogel coatings
- Fig. 12 : Cross-sectional micrographs of the YSZ, ScYSZ coatings and silica aerogel composites
- Fig. 13 : Thermal diffusivities for YSZ, ScYSZ and SiO2 ceramic fiber aerogel composites and heating temperature curves of outer titanium surface and inter coatings surface versus time
- Fig. 14 : Temperature of sample coatings vs. coating thickness curve
- Fig. 15 : TGA and DTA graph of A1 and A1 with 5% silica aerogel
- Fig. 16 : Schematic diagram of home-made setup for heat transfer analysis
- Fig. 17 : Comparison of TC reduction rates for the coatings under studyEn ligne : https://drive.google.com/file/d/13dB3eGVZzeBg5jg7TpZBbNInxY3Erhzf/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33635
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Code-barres Cote Support Localisation Section Disponibilité 21460 - Périodique Bibliothèque principale Documentaires Disponible Functional & specialty coatings for enhanced end use performance / Mukesh Kumar Madhup in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
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Titre : Functional & specialty coatings for enhanced end use performance Type de document : texte imprimé Auteurs : Mukesh Kumar Madhup, Auteur Année de publication : 2019 Article en page(s) : p. 88-98 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Adhésion
Anticorrosifs
Anticorrosion
Epoxydes
Essais de brouillard salin
Hydrophobie
Matériaux -- Propriétés fonctionnelles
Polyuréthanes
Résistance à l'abrasion
Revêtement antireflet
Revêtements anti-graffitis
Revêtements bi-composant
Revêtements organiques
Revêtements protecteurs
Surfaces -- NettoyageIndex. décimale : 667.9 Revêtements et enduits Résumé : The coating materials which provide specific performance outcomes are called functional and specialty coatings. Application of functional coatings are becoming increasingly popular with the technology progress in material science field and continuous research in specialty coating segment. By using right functional/specialty coating, it is possible to achieve specific coating propergies like anti-corrosion, anti-corrosion, anti-erosion, anti-wear and chemical resistance, infra-red rejection, enhanced light transmission, electrical dissipation etc. Applications of these coatings are carried out over variety of substrates including but aluminum, glass etc. to deliver the special properties for which it is designed. Note de contenu : - INTRODUCTION : Anticorrosive coatings - Specimen preparation - Antireflection coating - Principle of AR coating - Specimen preparation for testing antireflection property - Antigraffiti coating with hydrophobic property - Specimen preparation for testing antigraffiti property
- Fig. 1 : Representation of an electrochemical cell which causes anode to degrade in presence of electrolyte
- Fig. 2 : Metallic corrosion in environment in presence of water/moisture and formation of electrochemical cell
- Fig. 3 : 3M scotchkote anticorrosion coating after 50000 Hrs. in salt spray as per ASTM B-117
- Fig. 4 : Principle of reflection and enhancement of reflection of light using nanocoating
- Fig. 5 : Comparative %T (gain) of wavelength between 300-1200 nm for coated and uncoated glass. Increase of 2.5~3.0% light tranmission (single side coated glass)
- Fig. 6 : Figure depicting schematic representation of surface morphology for repellency of dirt and easy to clean property
- Fig. 7 : Determination of graffiti resistance by D6578/D6578M - 13
- Fig. 8 : Antigraffiti coating having hydrophobic property applied over coated and uncoated glass substrate
- Fig. 9 : 60 days exposed glass panels and water washed with same force
- Fig. 10 : Adhesion of the coating over, direct on FRP, PU coaing and mild steel (emery cleaned)
- Fig. 11 : Hot water soak adhesion tested specimens for 38 days at 95°C
- Fig. 12 : Comparative study of advanced abrasion resistance epoxy coating (AREC) versus conventional 2K liquid epoxy coating for abrasion resistance testing as per ASTM D4060
- Table 1 : Various test properties of advanced anticorrosion 2 pack epoxy coatingEn ligne : https://drive.google.com/file/d/1DtlhhQ7xuv3X2QA-DdsnZT0xoZZSImqx/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33636
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Code-barres Cote Support Localisation Section Disponibilité 21460 - Périodique Bibliothèque principale Documentaires Disponible Effect of particle size of extenders in water based paints - a critical view / M. Veeramani in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
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Titre : Effect of particle size of extenders in water based paints - a critical view Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2019 Article en page(s) : p. 112-118 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Charges (matériaux)
Diluants
Dioxyde de titane
Floculant
Formes des particules
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Taille des particulesIndex. décimale : 667.9 Revêtements et enduits Résumé : Extenders or fillers form the bulk of the paints. I had dealt with this subject earlier under the heading extenders with sufficient introduction, followed by individual description of various extenders and the critical role played by it in the paint of each extenders and the critical role played by it in the paint matrix, if the particle size of the extenders is reduced to a great extent. Now let me recall some of the salient features, in brief, of extenders. Readers may find some repetition from the earlier chapter ; it is only for the purpose of recalling the same for better continuity and also note that extenders are also known as extender pigments also. Note de contenu : - Extender pigments - the forgotten component
- Improving TiO2 use through spacing
- PVC ladder with varying extender volume concentration
- Extender flocculating performs worse
- Extender with air voids improves opacity
- TiO2 reductions of 20% are possible
- Fig. 1 : Reducing extender particle - Improving pigment spacing/dispersion
- Fig. 2 : Opacity curves showing crowding effect
- Fig. 3 : Reducing TiO2 content using extender E : effect on contrast ratio and effect on equivalent reflectance
- Fig. 4 : Effect of extender particle size and shape in glossEn ligne : https://drive.google.com/file/d/1ICUyqzH6irq2OxXEsJctGXW6KKEei_i9/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33637
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Code-barres Cote Support Localisation Section Disponibilité 21460 - Périodique Bibliothèque principale Documentaires Disponible Authors self developed one liner for raw materials testing / Mukund Hulyalkar in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
[article]
Titre : Authors self developed one liner for raw materials testing Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2019 Article en page(s) : p. 120-124 Langues : Anglais (eng) Catégories : Caractérisation
Emulsions
Matières premières
Polymères
Revêtements (produits chimiques):Peinture (produits chimiques)Index. décimale : 667.9 Revêtements et enduits Note de contenu : - CHEMICALS : DBP - DOP - Chlorinated paraffin wax - Ethylene glycol - Maleic anhydride - Casein - Hexamine - Litharge - Para formaldehyde - Glycerine - Phthalic anhydride - phosphoric acid - Rosin - Coal tar - Benzoic acid - Glue - Monoethanol amine - DETA - Melamine powder - Pentaerythritol - Phenol - Borax - PEG400 - Maxphalt 90/15 - Gilsonite - Alpha methyl styrene - Chlorinated rubber - PTSA acid - Propylene glycol - Silicone fluid (H/T) - Silicone 1994 - Styrene - TPP - TDI - TBHP - DTBP - DBTZ - MM acrylate - NC cotton 1/2 seconds - NC cotton 30/40 seconds - MEG
- RESIN AND EMULSIONS : Calcium rosinate - Hydro carbon resin 80 - Hydro carbon resin SP 90 - Hydro carbon resin SP 120 - Maleic resin (oil soluble) - Penta - ester gum - Reduced phenolic resin - Zinc calcium rosinate - UF resin - MF resin - Epoxy resin with equivalent wt 450 - Acrylic polyol - Styrene acrylic emulsion - Coalising agent - Wetting and dispersing - PVB resin - Solvent less epoxy/liquid epoxy - Polyamide 1300En ligne : https://drive.google.com/file/d/1Zbg_UMZU7Uza9e5L75nLm4j8eChoDPmE/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33638
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Code-barres Cote Support Localisation Section Disponibilité 21460 - Périodique Bibliothèque principale Documentaires Disponible Synthetic enamels - Direct to metal (DTM) / Mukund Hulyalkar in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
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Titre : Synthetic enamels - Direct to metal (DTM) Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2019 Article en page(s) : p. 128-130 Langues : Anglais (eng) Catégories : Application directe sur le métal
Formulation (Génie chimique)
Revêtement émail:Peinture-émailIndex. décimale : 667.9 Revêtements et enduits Résumé : This is totally new concept to save money on labor cost materials. Concept is similar to high build paints mor DFT in single coat. Which acts as primer as well ass finishing coat. It is formulated in such a way that it gives anti corrosive properties of primer as well and it is made with surface tolerant properties also and in addition fast dring to avoid dust accumulation and mild corrosive atmosphere like industrial area structures, buildings near sea shore, heavily raining areas like hill stations. In short, paint is in between primer and top coat. En ligne : https://drive.google.com/file/d/1YebLwPwl4-H_cD1HPEPq2k6uezmOFIMo/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33639
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Code-barres Cote Support Localisation Section Disponibilité 21460 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Role of construction chemicals Type de document : texte imprimé Auteurs : Harish Agrawal, Auteur Année de publication : 2019 Article en page(s) : p. 132-135 Langues : Anglais (eng) Catégories : Additifs
Anticorrosifs
CalcinationLa calcination est une technique de préparation d'échantillon utilisée en chimie analytique qui permet de prendre en compte ce phénomène. Elle consiste à chauffer l'échantillon à haute température (typiquement 500 à 1 000 °C) sous air ou sous atmosphère neutre pour provoquer des réactions physiques et chimiques et mettre ainsi l'échantillon dans un état de référence.
En effet, un certain nombre de propriétés des matériaux dépendent de la température et de l'historique de l'échantillon comme de l'humidité. La calcination permet de l'abstraire de ces effets et donc d'avoir des mesures reproductibles, de pouvoir comparer différents échantillons. En revanche, il faut être conscient que l'échantillon analysé n'est pas l'échantillon prélevé. La méthode est similaire à l'analyse des extraits secs mais utilise une température plus élevée.
Cendres volantes
Chimie
Composés inorganiques
Construction -- Matériaux
Hydratation
Matériaux cimentaires
Plastifiants
Silice fuméeIndex. décimale : 620.13 Matériaux de construction : pierre, ciment, béton, liants de Résumé : In the earlier article for the month of october issue, focused on introduction and classification of construction chemicals. In this issue we will be discussing details about each products pertaining to, the effective use of construction chemicals for enduring structures with special emphasis on improvements at the time of construction and protection from future deterioration. Before we move on to different construction chemicals, it is necessary to understand role of construction chemicals.
The construction industry faces new challenges to make the structures stronger, sleeker, of sizes and shapes and at locations that defy imagination as well accompaniges by challenges to make them economical, damp proof, decay proof etc. concrete and other materials like bricks, blocks etc are being used extensively right from founding level below the surface level to the rooftop.
Today admixture, coatings, adhesives, sealants etc, form an integral part of all that goes in to constructing a habitat or structure or a utility at various stages of construction.
Before we proceed further it is necessary to understand the basic raw materials for construction industry that is cement, silica and aggregates. Cement is the binding force which forms the basis for the chemicals reaction, primarly with water, to form the paste which bonds the other ingredients together. The common reference of cement is the Portland cement which has become almost an international nomenclature. The cement chemistry with construction chemicals as as follows.Note de contenu : - Cement chemistry
- During calcination, the volume contracts
- During hydration, it swells
- Concrete admixtures
- Common properties of mineral admixtures
- Fly ash
- Silica fume
- Silica fume - Advantages
- Chemical admixtures
- Types of chemical admixtures
- Role played by chemicals in construction industry - in general
- Role of corrosion inhibitors (CI) in construction industry
- Role of superplasticiser (SP) in construction industry
- Compatibility of superplasticizers and cementEn ligne : https://drive.google.com/file/d/1OUogNLv5BVS4p3mSBIKKW8qQNx7y4UTz/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33640
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