Accueil
PAINTINDIA . Vol. LXIX, N° 12Mention de date : 12/2019Paru le : 15/12/2019 |
Dépouillements
Ajouter le résultat dans votre panierDefects on coated steel in CED coating : a review / Shivam Madhukar Tembekar in PAINTINDIA, Vol. LXIX, N° 12 (12/2019)
[article]
Titre : Defects on coated steel in CED coating : a review Type de document : texte imprimé Auteurs : Shivam Madhukar Tembekar, Auteur Année de publication : 2019 Article en page(s) : p. 55-60 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.
Dépôt électrolytique
Métaux -- Revêtements:Métaux -- Peinture
Revêtements -- Défauts:Peinture -- DéfautsIndex. décimale : 667.9 Revêtements et enduits Résumé : In CED coating there are several type of defects. Cratering phenomenon in cathodic electrodeposition coating was investigated and the cratering mechanism was discussed. It occurs when part of the paint film undergoes a thermal change due to the spark discharge on the cathode. The thermal change generates nuclei that hinder the levelling of the deposited paint. Crawling, also called retraction or pulling back, is a uniform de-wetting effect : the surface energy of the solid substrate is lower than the surface tension of the liquid paint. Flooding is a film defect originating from the evaporation of solvents during film formation. Strong gradients in temperature and composition develop when the evaporation of solvent proceeds quickly. Foam bubbles can already be present in the paint before application starts. Foam can also be introduced during the application process ; especially during brushing and spraying, air can be brought into the paint. Cracking is a process which occurs when a thin film on a substrate can break when the film suffers from stress. In coating technology breakage of a coating is called cracking. Note de contenu : - EXPERIMENTAL : Steel sheet specimens - Electrodeposition coating method - Crawling - Cratering - Flooding - Foam - Cracking - Dirt - Barriers to curing defect to problems
- TECHNICAL BARRIERS TO CURING DEFECTS : Lack of adequate tests - Unsual and/or severe contaminants
- NON-TECHNICAL BARRIERS : Lack of adequate training
- Figure : Line process of CED methodEn ligne : https://drive.google.com/file/d/1WbD9aCbkENIZ_GXvr2Y25B2xygCiabg3/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33641
in PAINTINDIA > Vol. LXIX, N° 12 (12/2019) . - p. 55-60[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible Role of hyper branched polymers in coatings / Machindra Shinde in PAINTINDIA, Vol. LXIX, N° 12 (12/2019)
[article]
Titre : Role of hyper branched polymers in coatings Type de document : texte imprimé Auteurs : Machindra Shinde, Auteur Année de publication : 2019 Article en page(s) : p. 61-70 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Polymères -- Propriétés chimiques
Polymères dendritiques
Polymères ramifiésIndex. décimale : 667.9 Revêtements et enduits Résumé : The hyperbranched polymers are more attractive because of their polydispersity and have less perfect globular shape. Unlike conventional polymers, the high number of end groups and their nature participate actively in the physical properties (solubility, glass transition temperature and viscosity) in combination with the backbone structure. This characteristic is exceptional since it leads to the possibility of dseigning the macromolecule with the combination of many different end groups, thus defining the type of reactive chemistry, properties and applications.
Hyperbranched polymers also have received much attention due to their unique chemical properties as well as their potential applications in coatings, additives, drug and gene delivery, macromolecular building blocks, nanotechnology, and supramolecular science. Hyperbranched polymers can be prepared by means of single monomer methodology (SMM) and double-monomer methodology (DMM). Too many factors have to be considered such as nature of end groups, branching density, flexibility of the repeating units, and in addition, the broad molar mass distribution can obscure specific effects.
Hyperbranched and dendritic polymers show low viscosities at high molecular weights. For coating applications, this should be highly interesting in terms of the environmental issues, where legislation plays an important role in the future trend towards coatings with lower VOCs than presently applicable. However, favourable viscosity is not the only property to which hyper branched polymers can contribute.Note de contenu : - HISTORY OF HYPERBRANCHED POLYMERS
- synthesis and properties of hyperbranched polymer : Structure - Dendritic growth - Divergent approach - Mixed reactivity approach - Convergent approach - Perstorp technology - Polymer composition
- STRUCTURE/PROPERTY RELATIONS : Physical properties - Reactivities - Chemical resistance - Thermal properties - mechanical properties - Molecular design
- APPLICATIONS : High-solid alkyds - Hyperbranched epoxies - Polyurethane dispersions - Hyperbranched acrylates
- FUTURE OF HYPERBRANCHED POLYMERS
- Fig. 1 : A schematic descriptionof dendritic polymer
- Fig. 2 : Dendritic molecule
- Fig. 3 : Dendritic growth according to the divergent approach
- Fig. 4 : Dendritic growth through mixed reactivity
- Fig. 5 : Dendritic growth through the convergent approach
- Fig. 6 : Perstorp technology
- Fig. 7 : Schematic illustration of hyperbranched growth
- Fig. 8 : Molecular design of a hyperbranched polymer
- Fig. 9 : Schematic illustration of hyperbranched PUR dispersion
- Graph 1 : Viscosity vs. molecular weight of hyperbranched polyester
- Graph 2 : TGA measurement of a hyperbranched polyester based on a 3-functional core and Bis-MPA
- Graph 3 : Air drying of high-solid alkyds
- Graph 4 : Toughening of epoxies by hyperbranched epoxies
- Graph 5 : Curing behavious of hyperbranched PUR-HMMM clear coat @ 160°C
- Graph 6 : UV curing of neat hyperbranched acrylates
- Table 1 : Properties of cured PUR dispersion at different cross-linking densities
- Table 2 : Properties of UV-cured hyperbranched acrylatesEn ligne : https://drive.google.com/file/d/1S34dhZ9slxryYLsTJRPChSSVn8QH8Imu/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33642
in PAINTINDIA > Vol. LXIX, N° 12 (12/2019) . - p. 61-70[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible Effect of pigment particle size in coating application / Sanket Shinde in PAINTINDIA, Vol. LXIX, N° 12 (12/2019)
[article]
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
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible
[article]
Titre : Pigment volume concentration (PVC) : Water-based paints - 60 Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2019 Article en page(s) : p. 84-86 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Calcul
Concentration pigmentaire volumique
Formulation (Génie chimique)
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Now let me turn the attentionof the readers to a very important subject known as Pigment Volume Concentration popularly known as PVC. Pigment Volume Concentration can be defined as the ratio of the Volume of Pigment to the Volume of total non-volatile material present in a coating. The figure is usually expressed as a percentage. The non-volatile material, the material in the dried film, is represented by pigment and binder. Note de contenu : - Definition of Pigment Volume Concentration
- Typical formulation of premium high sheen coating
- Fig. 1 : Calculation of volume pigment concentration
- Fig. 2 : Low PVC - Large distances
- Fig. 3 : High PVC - Small distances
- Fig. 4 : Dry pigment - Pigment/binder ratio at CPVC - Pigment/binder ratio greater than CPVC
- Fig. 5 : Pigment volume concentration and its role in color - Just paint
- Fig. 6 : Pigment volume concentration ladder, showing increasing PVC ratiosEn ligne : https://drive.google.com/file/d/1qEd0v4sqhyDCffz4rsRaUr2huuxcd3cB/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33644
in PAINTINDIA > Vol. LXIX, N° 12 (12/2019) . - p. 84-86[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible Authors self developed one liner for raw materials testing / Mukund Hulyalkar in PAINTINDIA, Vol. LXIX, N° 12 (12/2019)
[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. 88-92 Langues : Anglais (eng) Catégories : Caractérisation
Extendeurs
Matières premières
Revêtements (produits chimiques):Peinture (produits chimiques)Index. décimale : 667.9 Revêtements et enduits Note de contenu : - PIGMENTS : Zinc chrome - Scarlet chrome - Middle chrome - Lemon chrome - Beta blue - Primrose chrome - Ultra marine blue - Prussian blue - Permanent carmine red - Signal red 402 - Toludine red 414 - Rubine toner - TiO2 rutile local - TiO2 anatase - Zinc oxide - Zinc phosphate - Pthalo green - Basic lead silico chrome cuprous oxide - Zinc tetroxy chromate - Red lead - Yellow oxide MIO - Al paste leafing - Al paste non-leafing - Zinc dust metal Zn - Violet Toner - Bordaux - "CCL paste yellow red blue" - Helio fast red BB - Ranolite red 2 BL - Ranolite yellow CL - Soap fast red F4R - Soap fast yellow 121 - Navifast PO red 4R2Y - Carbon black - Utox - Ferric oxide 301
- EXTENDERS : Steatite M and O - Mica M and O - Ppt CACO3 - Blank fix - Barytes - Calcite - Indian whiting - China clay M and O - Red oxide - Asbestor powder - Asbestor - Al silicate B.P. - Forcal 1 - Graphite - Silica - White spirit - O and M-xylene - Toluene - Butyl acetate - Dipentene - Power oil 30/min turpentine - C X/C IX - DAA - Butanol - Acetone MIBK - IPA - GT - M/spirit - Ethyl acetate - Cyclohexanone - Glycol acetate - Cellosolve (ethyl glycol ether) - Kerosene - Industrial solvent naphtha - LDO - DMT - Isobutanol - Cellosolve acetate - Methanol - Benzene - Pine oil - SPB - MEK - Ethanol - N-propanol - Butyl cellosolve - Butyl carbitol - Ethyl carbitol - Amyl alcohol - Benzyl alcohol - 2 ethyl butanol - Isophorone - AromaxEn ligne : https://drive.google.com/file/d/1GFRShY_sBRMRRKHZCcGMz2COMlGOJpb5/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33645
in PAINTINDIA > Vol. LXIX, N° 12 (12/2019) . - p. 88-92[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible Quick drying finishing paint - signal red / Mukund Hulyalkar in PAINTINDIA, Vol. LXIX, N° 12 (12/2019)
[article]
Titre : Quick drying finishing paint - signal red Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2019 Article en page(s) : p. 94-96 Langues : Anglais (eng) Catégories : Chromate de zinc
Coût -- Contrôle
Revêtements -- Finition:Peinture -- Finition
VernisIndex. décimale : 667.6 Peintures Résumé : Both these products - quick drying, finishing paint, signal red and zinc chromate primer pink, wet on wet for gas cylinders - are sold in very high volume but with low profit margin and very quality conscious also. To make the best product at lowest RMC is the skin of formulator.
There are 2 categories of consumers for such paint. a) Original cylinder manufacturers (OEM) - b) reconditioners of old cylindersNote de contenu : - Formulation challenges
- Formulators skill
- Formulation challenges to reduce costEn ligne : https://drive.google.com/file/d/17jK0kN8yQOmqxyrEqXwqdZyvcDILpOPu/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33646
in PAINTINDIA > Vol. LXIX, N° 12 (12/2019) . - p. 94-96[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible
[article]
Titre : Measuring the workability of concrete Type de document : texte imprimé Auteurs : Harish Agrawal, Auteur Année de publication : 2019 Article en page(s) : p. 100-107 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Essais dynamiques
Matériaux cimentaires
Matériaux cimentaires -- AdditifsIndex. décimale : 620.13 Matériaux de construction : pierre, ciment, béton, liants de Résumé : Before we stard discussing about various construction chemicals and their applications, it is necessary to understand about the admixture and its functionality behavior along with use of various construction chemicals.
Construction chemicals are those which are used in concrete construction and repairing. Admixtures are materials that are added to concrete at some stage during its making to give the concrete new properties in the fresh and/or hardened stages besides cement, coarse and fine aggregates and water, admixtures can be called the fourth ingredient of concrete.
Chemicals are used to modify the properties of the concrete in such a way as to make it more suitable for a particular job for economy or for other purposes such as saving energy. The quantities used are very small, but they can impart the desirable qualities to the concrete that cannot be secured by other methods.
Chemicals are added to concrete for the purposes, of modifying setting times, entraining minute air bubbles, reduce water requirements of concrete mixes, increase workability, modify the capacity for fleeding, increase strength (tensile, flexural and compressive), reduce segregation, improve penetration and pump ability, reduce rate of slump loss, accelerate the rate of strength development at early ages, create slight expansion, increase the durability, decrease permeability, increase bond between old and new concrete, inhibit corrosion of embedded metals, reduce expansion produced by alkali aggregate reaction, and ease removal of forms.
It is appropriate to recognize that chemicals are no substitute for sound concrete making practices. The introduction of chemicals requires aditional care in concrete making and improved quality control.
It is appropriate to recognize that chemicals are no substitute for sound concrete making practices. The introduction of chemicals requires additional care in concrete making and improved quality control.
Mostly chemicals used are proprietary products and they are used primarily on the basis of experience or tests conducted by the manufactures. Therefore, the chemicals used should meet the applicable standards or specifications like.
1. The Indian Standard or ASTM C494
2. or the British Standard Bs5075
The amount of chemicals recommended by the manufacturer or the optimum amount determined by laboratory and field studies should be used. Many chemicals affect more than one property of concrete. Sometimes affecting desirable properties adversely. Hence careful evaluation of their effects, when singly or in combination with other chemicals, should be made by trial, mixes with that particular concrete.Note de contenu : - PROPERTIES OF CONCRETE : Factors effecting workability
- SLUMP TEST : Concrete slump test - Principle of slump test - Slump test apparatus - Procedure of concrete slump test - Application of slump test - Conclusion - Slump test standards
- BALL-PENETRATION TEST : Advantages of the Kelly ball test - disadvantages of the Kelly ball test - Kelly ball test apparatus - Standard guidelines for the ball penetration test - Kell ball procedure
- TROWEL TEST : Advantages - Disadvantages
- STRENGTH : Types of concrete strength - Understanding grades of concrete
- BLEEDING TEST
- WATER CEMENT RATIO
- BENDING TESTS ON CONCRETE BEAMS
- Fig. 1 : Details and procedures of functional bleeding test apparatus
- Table 1 : Workability and use of concrete
- Table 2 : Measuring strength tableEn ligne : https://drive.google.com/file/d/1lSJpW2kgGfadNUNDg2CrW7BG1b9I2B6Q/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33647
in PAINTINDIA > Vol. LXIX, N° 12 (12/2019) . - p. 100-107[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible
[article]
Titre : Assessment and its role Type de document : texte imprimé Auteurs : Prashant Joshi, Auteur Année de publication : 2019 Article en page(s) : p. 118-124 Langues : Anglais (eng) Catégories : Certification
Evaluation
Qualité -- Contrôle
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : Paints and coatings skill council has completed 14000 assessments and certifications since its inception in 2015. It follows a stringent assessment process and also insists its partners and associates to follow the same.
Let us understand what assessment means and what is its role and contribution the growth of a person.
Assessment is a process which follows a set of four components. These four stages or components are plan, do, check act. It is a process to evaluate the student's performance. Besides, it is an orderly process. This uses a test to check the student's performance. It divides into many types.Note de contenu : - TYPES OF ASSESSMENTS : Formative assessment - Summative assessment - Work integrated assessment - Diagnostic assessment - Dynamic assessment - Synoptic assessment - Criterion-referenced assessment - Ipsative assessment
- PURPOSE OF ASSESSMENT
- ASSESSMENT IS NOT MEASUREMENT : Paints and coatings skill council assessment design & procedure
- WHO CAN BE AN ASSESSOR ? : Assessment process of batch is illustrated as follow - Assessment types - Assessment criteria - Question banks - TakshashilaEn ligne : https://drive.google.com/file/d/1KXSFpvcTYxBA1Pb0SB9N9Ga3dOB1PP_P/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33648
in PAINTINDIA > Vol. LXIX, N° 12 (12/2019) . - p. 118-124[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21461 - Périodique Bibliothèque principale Documentaires Disponible
Exemplaires (1)
Code-barres | Cote | Support | Localisation | Section | Disponibilité |
---|---|---|---|---|---|
21461 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |