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EUROPEAN COATINGS JOURNAL (ECJ) . N° 7-8/01Mention de date : 07-08/2001Paru le : 01/07/2001 |
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Ajouter le résultat dans votre panierMedia milling with high power density / Norbert Stehr in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/01 (07-08/2001)
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Titre : Media milling with high power density Type de document : texte imprimé Auteurs : Norbert Stehr, Auteur Année de publication : 2001 Article en page(s) : p. 18-24 Langues : Anglais (eng) Tags : Paint Manufacturing 'Grinding(comminution)' Grinder 'Grinding medium' Design Pigments Dispersion Index. décimale : 667.9 Revêtements et enduits Résumé : Conventional full space agitated media mills reach the limits of their scale-up potential when used to process heat-sensitive products. Double cylindrical annular gap mills, in contrast, can be scaled up linearly. The high power density in the small-volume mills of this type can lead to a marked increase in the product quality. The high productivity obtained from a small grinding chamber contributes to reducing operating costs and hence to increasing the efficiency of the production process. Note de contenu : 1.Definition of mass-specific energy input and power density
1.1 Mass-specific energy input
1.2 Power density in the grinding chamber
2. Scale-up problems in full space mills with jacket cooling only
2.1 Power density as a function of mill size
2.2 Estimate of the required grinding chamber volume
3. Small-volume high-performance mills with defined internal grinding media recirculation
3.1 Conditions for a linear scale-up
3.2 Structure and function of a multiple-zone Perl Mill with non size-dependant power density
3.3 Increasing productivity and/or quality
4. Design illustrationEn ligne : https://drive.google.com/file/d/1YXJSKR1kHgzixB-3ROnB6k5IvqQPLkng/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10945
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/01 (07-08/2001) . - p. 18-24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000636 - Périodique Bibliothèque principale Documentaires Disponible Multifunctional additive / Simon Poulton in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/01 (07-08/2001)
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Titre : Multifunctional additive : Improving dispersion efficiency Type de document : texte imprimé Auteurs : Simon Poulton, Auteur Année de publication : 2001 Article en page(s) : p. 26-27 Langues : Anglais (eng) Tags : Paint Manufacturing Adjuvant Dispersant 'Grinding(comminution)' Dispersion Formulation Index. décimale : 667.9 Revêtements et enduits Résumé : A performance additive with a number of features that offer significant benefits to formulators of waterborne systems is welcome. The base strength of Bisomer Amine D 700, 77% aqueous dimethylaminohydroxypropane (DMAHP), enables effective pH adjustment and neutralisation whilst the volatile nature Improves early water resistance, gloss, and scrub resistance. Also when used in an optimised formulation, it is shown In this paper that DMAHP can reduce primary dispersant levels and hence reduce formulation costs. In addition, the tertiary amine structure enhances biocide efficiency. Note de contenu : - Experiment : dispersant demand procedure
- Acrylic eggshell millbase is formulated
- TiO2 slurry formulation
- Results : Acrylic eggshell dispersant demand
- Results : TiO2 slurry dispersant demandEn ligne : https://drive.google.com/file/d/1FJPCvVj2lB9OyreqyUEBht5HyqYxjDNo/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10946
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/01 (07-08/2001) . - p. 26-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000636 - Périodique Bibliothèque principale Documentaires Disponible VMPs - the next generation of metallic pigments / Paul Harding in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/01 (07-08/2001)
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Titre : VMPs - the next generation of metallic pigments Type de document : texte imprimé Auteurs : Paul Harding, Auteur Année de publication : 2001 Article en page(s) : p. 28-32 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Metallic effects have long been produced using a variety of pigments including, but not limited to, pearl micas and pigments produced from true metals such as bronze, copper and aluminium. This piece will contrast the method of manufacture, application and end uses of the various types of metallic effect pigment in existence with Vacuum Metallised Pigments (VMPs) and illustrate the use of VMPs in a variety of coatings systems. Evidence will be presented contrasting VMP based produced paints with other common metallic paints. The novel manufacture process of VMPs leads to substantially different processing requirements, physical properties and end effects when compared against conventional metal and mica based systems; the uses, limitations and potential areas for development of these materials will be discussed in depth. Note de contenu : - Pigments forms
- Atomised powders
- Flake powders
- Formulation with VMPsEn ligne : https://drive.google.com/file/d/19Oi3wBIlS5HgU3aNcrLa5smJoNZWKabC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10947
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/01 (07-08/2001) . - p. 28-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000636 - Périodique Bibliothèque principale Documentaires Disponible Measuring special effects / Werner Rudolf Cramer in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/01 (07-08/2001)
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Titre : Measuring special effects Type de document : texte imprimé Auteurs : Werner Rudolf Cramer, Auteur ; Peter W. Gabel, Auteur Année de publication : 2001 Article en page(s) : p. 34-39 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Like other things effect pigments are advancing. A new second generation of effect pigments has been developed which gets more and more attention of stylists and designers for Industrial applications. This latest generation of effect pigments requires a totally different system of measurement and characterisation. The capabilities of various spectrophotometers available for this purpose are discussed. Note de contenu : - Interference - colour by physics
- Colour shift depends on light and illumination angle
- Visual judgement of effect pigments
- Multi-angle measurements - absolutely essential
- Spectrophotometers - an angle-dependent overview
- The results - more than just numbers
- The issues - and a pragmatic solutionEn ligne : https://drive.google.com/file/d/1d_mxgnmwKRoYkaEzAsA2qk9iXPyNmuqX/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10948
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/01 (07-08/2001) . - p. 34-39[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000636 - Périodique Bibliothèque principale Documentaires Disponible 2K PU high solids: effect of diol structure / K. V. S. N. Raju in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/01 (07-08/2001)
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Titre : 2K PU high solids: effect of diol structure Type de document : texte imprimé Auteurs : K. V. S. N. Raju, Auteur ; Ramanuj Narayan, Auteur Année de publication : 2001 Article en page(s) : p. 40-46 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : The effects of diol structure of neopentyl glycol, 1,4-cyclohexanedimethanol and 1,3-propanediol on the physical properties of hydroxylated polyesters (HPs) are reported here. The HPs were characterised by gel permeation chromatography, viscometry and differential scanning calorimetry. The results indicate that the diol structure has significant effect on the viscosity and glass transition temperature of HPs. The potentialities of these HPs in coating formulation have been studied by developing two pack polyurethane clear coats with diphenylmethane diisocyanate. The performance of these coatings were evaluated by determining their tensile properties, dynamic mechanical properties, adhesion and other empirical coating properties such as flexibility, impact, abrasion, etc. The crosslink density (XLD) was calculated by using dynamic mechanical thermal analyser (DMTA) data. Note de contenu : - Hydroxylated polyester as reactive oligomeric precursor
- Experimental
- Hydroxylated polyester
- Characterization
- Coating formulations
- Preparation of coating free films
- Coating on metal substrate
- Test procedures
- Results and discussion
- The tensile strength values of the coatings follows the order HP200>HP100>HP300
- The pull off adhesion strength value could be an indirect measure of tensile strength
- Results indicate good scratch resistance as well as mechanical strength of coatingsEn ligne : https://drive.google.com/file/d/1AMfEjD1nVv2Mvp9zd11NB7RyLRAtZGCJ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10949
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/01 (07-08/2001) . - p. 40-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000636 - Périodique Bibliothèque principale Documentaires Disponible Mixing an dissolving / Thomas Brock in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/01 (07-08/2001)
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Titre : Mixing an dissolving Type de document : texte imprimé Auteurs : Thomas Brock, Auteur ; Michael Groteklaes, Auteur ; Peter Mischke, Auteur Année de publication : 2001 Article en page(s) : p. 74-75 Langues : Anglais (eng) Catégories : Dissolution (chimie)
Mélanges (chimie)Index. décimale : 667.9 Revêtements et enduits Note de contenu : - Homogenising processes
- Shock phenomena
- Sequence effects
- Defininng the degree and speed of mixing
- Fig. 1 : Flow in a stirred vessel
- Fig. 2 : Time depenence of the degree of mixing (neglecting super-imposed demixing processes)Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33498
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Code-barres Cote Support Localisation Section Disponibilité 000636 - Périodique Bibliothèque principale Documentaires Disponible Self-crosslinking surfactant free acrylic dispersions / Fred Bückmann in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/01 (07-08/2001)
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Titre : Self-crosslinking surfactant free acrylic dispersions Type de document : texte imprimé Auteurs : Fred Bückmann, Auteur ; Ad Overbeek, Auteur ; Tijs Nabuurs, Auteur Année de publication : 2001 Article en page(s) : p. 53-60 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Surfactant free acrylic dispersions with with a core-shell particle morphology are described, where the shell polymer is a self-crosslinking polymeric dispersant used for the stabilisation of the polymer particle. The phase ratio's and the magnitude in which the Tg's of the polymeric dispersant and the subsequently formed polymer differ were found to be of crucial importance to obtain a very low MFT and hence very good film formation combined with very high hardness and good anti blocking properties. In addition films cas from these dispersions have excellent chemical resistances which make these dispersions very useful as binders for high performance coating systems. Note de contenu : - POLYMER ENTANGLEMENT IS CRUCIAL FOR FILM FORMATION
- HYDROPHILIC LOW MOLECULAR WEIGHT POLYMER BACKBONES : Water acts as plasticizing agent - Additional crosslinking to overcome poor water resistance
- SEQUENTIAL POLYMERISATION FOR PHASE SEPARATED PARTICLE MORPHOLOGIES : Low Tg for film formation plus high Tg for durability - Core/shell emulsions usually require surfactant
- CROSSLINKING FOR IMPROVED CHEMICAL RESISTANCE : Reaction between polymer chains or emulsion particles - A variety of crosslinking mechanisms
- THE ROLE OF THE SURFACTANT : Migration is a problem - Copolymerisable surfactants - reactivity is difficult to adjust - Polymeric surfactants with reduced mobility - Stabilisation by anionic initiators - only for low solids
- CONCEPT OF SURFACTANT FREE DISPERSIONS WITH SELF DISPERSING POLYMERS : Creation of core/shell particles through secondary dispersion - More rapid buildup of toughness and resistance
- POLYMERIC SELF-CROSSLINKING SURFACTANT
- PROPERTIES OF POLYMERIC SELF CROSSLINKING SURFACTANT : Surface tension is reduced effectively - Stable dispersion with low particle size - Core/shell geometry verified
- THE EFFECT ON FILM FORMATION : Crosslinks at the particle surface are mos effective - Crosslinking both core and shell polymers - Surfactant does not exude
- INVESTIGATING MODEL DISPERSIONS : Tg affects surface hardness - Acid value influences MFT but not hardness - Very good blocking properties with low Tg material
- APPLICATION IN HIGH PERFORMANCE COATINGS : Translucent industrial wood coatings with excellent wetting - Flexible and anti-blocking coatings for joineryPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33499
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Code-barres Cote Support Localisation Section Disponibilité 000636 - Périodique Bibliothèque principale Documentaires Disponible Additives for latex paints - direct and side effects / Vladimir V. Verkholantsev in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/01 (07-08/2001)
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Titre : Additives for latex paints - direct and side effects Type de document : texte imprimé Auteurs : Vladimir V. Verkholantsev, Auteur Année de publication : 2001 Article en page(s) : p. 62-69 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : No medicine withoug side effects - this often holds true for paint additives as well. Concentrating on aqueous emulsion paints (latexes), the author reviews the most common classes of additives in use, and lists the effects these substances can cause apart from their original use -often unforesen. Note de contenu : - Additive functions in latex paints
- Which properties need to be controlled ?
- Standard problems of functional additives in emulsions
- What are side effects of emulsion additives ?
- Emulsifiers, pigment wetting agents, and dispersants
- Defoamers (foam controllers)
- Rheology control agents - thickeners : Cellulose derivatives - Associative thickeners - Inorganic thickeners
- Performance fluids (volatile organic liquids)
- Driers and catalysts
- Anti-skinning additives
- Surface conditioners
- Matting agents
- Biocides : In-can preservatives
- Dry film/substrate preservatives
- Temporary corrosion inhibitors
- Fig. 1 : Function of coating additives : material flow diagram
- Fig. 2 : Functional additives in latex paints and their location of activity in the phases and interphases of the coating : a. liquid paint, b. wet application, c. coating in servicePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33500
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Code-barres Cote Support Localisation Section Disponibilité 000636 - Périodique Bibliothèque principale Documentaires Disponible
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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000636 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |