100% inspection of surfaces before gluing / célian Cherrier in ADHESION - ADHESIVES + SEALANTS, Vol. 14, N° 1/2017 (2017)

[article]  inADHESION - ADHESIVES + SEALANTS > Vol. 14, N° 1/2017 (2017) . - p. 36-39 Titre : 100% inspection of surfaces before gluing Type de document : texte imprimé Auteurs : célian Cherrier, Auteur ; Richard Söhnchen, Auteur Année de publication : 2017 Article en page(s) : p. 36-39 Langues : Multilingue (mul) Catégories : Composites à fibres de carbone Contrôle non destructif Contrôle technique Essais (technologie) Imagerie (technique) Mouillage (chimie des surfaces) Plasma à pression atmosphérique Un plasma à pression atmosphérique (ou plasma à PA ou plasma froid) est le nom donné à une catégorie spéciale de plasma pour lequel la pression approche celle de l’atmosphère. Le plasma à pression atmosphérique marque une nette différence avec le plasma basse et haute pression. En effet, contrairement à ces derniers aucune enceinte de traitement n'est nécessaire. Ce type de plasma peut donc être utilisé directement sur ligne de production, évitant ainsi l'utilisation de vide qui est extrêmement onéreuse. Surfaces -- Analyse Taille des gouttelettes Index. décimale : 668.3 Adhésifs et produits semblables Résumé : There is a new solution on the market for the in-line inspection of the surface condition before gluing. A fine fog is sprayed and evaluated for analysis of the surface energy. This non-destructive test is performed in real time, leaves no residues and covers the entire component. Note de contenu : - Functional principle - Info box : The facts about the wetting test at a glance - Applications - Advantages and benefits - Technical data - Detection of contamination - Characterisation of surface treatments - Application and benefits - FIGURES : 1. Measurement carried out by a robot - 2. Wetting test process chain - 3. Wetting of a CFRP specimen on a conveyor belt. What is known as a water aerosol is produced on the surface with an ultrasound nozzle - 4. Different droplet sizes on a CFRP surface : the area on the right was treated with atmospheric pressure plasma ; here the wettability is much better and therefore the droplets are larger on average - 5. Evaluation of the droplets on a CFRP surface using the Visioncheck image processing software (a zoomed section of the original image is shown on the left, the same area after applying the droplet recognition algorithm is presented in the middle, and the evaluation of each individual drolet is shown on the right) - 6. Sample evaluation and good/bad classification of an area contaminated by a fingerprint, using automated image processing software - 7. Measurement results with evaluation of the average droplet size and wetting percentage : the diagrams on the left show the results of a plasma-activated specimen (activation Lvl1 < activation Lvl2), the diagrams on the right show the results of specimens contaminated by parting agents in various concentrations. These were tested within the scope of the ComBoNDT project (this ComBoNDT project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 636494) Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28068 [article]

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Analysis of droplet impingement of different atomizers used in spray coating processes / Qiaoyan Ye in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 2 (03/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 2 (03/2017) . - p. 467–476 Titre : Analysis of droplet impingement of different atomizers used in spray coating processes Type de document : texte imprimé Auteurs : Qiaoyan Ye, Auteur ; Joachim Domnick, Auteur Année de publication : 2017 Article en page(s) : p. 467–476 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse numérique Dépôt par pulvérisation Revêtements:Peinture Système de pulvérisation (technologie) Taille des gouttelettes Index. décimale : 667.9 Revêtements et enduits Résumé : This paper presents numerical studies on spray painting processes using three different atomizers, i.e., a high-speed rotary bell atomizer, an airless gun and a pneumatic air spray gun. A commercial CFD code was applied using an Euler-Lagrangian approach for two phase flow calculations. Special attention was paid to the droplet impingement process on the substrate. Orthogonal impact velocities and size distributions of the droplets depositing on substrates were analyzed in detail. The obtained simulation results show substantial differences of the impacting droplet characteristics of these three atomizers, which will have significant influences on the properties of the forming paint films. Note de contenu : - Droplet impingement using a high-speed rotary bell atomizer - Droplet impingement using an airless gun - Droplet impingement using a pneumatic atomizer DOI : 10.1007/s11998-016-9867-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9867-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28161 [article]

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Characteristics of nFOG, an aerosol-based wet thin film coating technique / Juha Harra in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 3 (05/2018) . - p. 623-632 Titre : Characteristics of nFOG, an aerosol-based wet thin film coating technique Type de document : texte imprimé Auteurs : Juha Harra, Auteur ; Mikko Tuominen, Auteur ; Paxton Juuti, Auteur ; Jenny Rissler, Auteur ; Heli Koivuluoto, Auteur ; Janne Haapanen, Auteur ; Henna Niemelä-Anttonen, Auteur ; Christian Stenroos, Auteur ; Hannu Teisala, Auteur ; Johanna Lahti, Auteur ; Jurkka Kuusipalo, Auteur ; Petri Vuoristo, Auteur ; Jyrki M. Mäkelä, Auteur Année de publication : 2018 Article en page(s) : p. 623-632 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aérosols Polymères Système de pulvérisation (technologie) Taille des gouttelettes Index. décimale : 667.9 Revêtements et enduits Résumé : An atmospheric pressure aerosol-based wet thin film coating technique called the nFOG is characterized and applied in polymer film coatings. In the nFOG, a fog of droplets is formed by two air-assist atomizers oriented toward each other inside a deposition chamber. The droplets settle gravitationally and deposit on a substrate, forming a wet film. In this study, the continuous deposition mode of the nFOG is explored. We determined the size distribution of water droplets inside the chamber in a wide side range of 0.1–100 µm and on the substrate using aerosol measurement instruments and optical microscopy, respectively. The droplet size distribution was found to be bimodal with droplets of approximately 30–50 µm contributing the most to the mass of the formed wet film. The complementary measurement methods allow us to estimate the role of different droplet deposition mechanisms. The obtained results suggest that the deposition velocity of the droplets is lower than the calculated terminal settling velocity, likely due to the flow fields inside the chamber. Furthermore, the mass flux of the droplets onto the substrate is determined to be in the order of 1 g/m3s, corresponding to a wet film growth rate of 1 µm/s. Finally, the nFOG technique is demonstrated by preparing polymer films with thicknesses in the range of approximately 0.1–20 µm. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : nFOG coating system - Aerosol droplet size determination - Droplet deposition measurements - Film coating and characterization - RESULTS AND DISCUSSION : Droplet size distribution in the aerosol - Droplet mass flux onto the substrate - Deposition mechanism of the droplets - Polymer film coatings DOI : 10.1007/s11998-017-0022-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0022-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30758 [article]

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A comparison of spray guns / S. Mannouch in WORLD LEATHER, Vol. 15, N° 3 (05/2002)  

[article]  inWORLD LEATHER > Vol. 15, N° 3 (05/2002) . - p. 49-53 Titre : A comparison of spray guns Type de document : texte imprimé Auteurs : S. Mannouch, Auteur Année de publication : 2002 Article en page(s) : p. 49-53 Langues : Anglais (eng) Catégories : Cuirs et peaux -- Finition Système de pulvérisation (technologie) Taille des gouttelettes Vaporisateurs Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The spray finishing operation for leather is driven by three main factors: The quality of finish This is controlled by the method used for atomisation, as this dictates both the projected droplet size and the velocity at which it strikes the leather surface. The speed of operation This is controlled by the fluid flow. In turn this has consequences on the droplet size and transfer efficiency. The efficiency of spray finishing The efficiency of the operation influences the cost on a day-to-day basis, together with : the initial investment in the spray guns and their fluid supply system, energy requirement, maintenance and replacement of parts subject to wear, down-time taken for that maintenance and the time for set-up procedure prior to spraying. Quality, speed and efficiency are closely linked together, and no single factor can be altered without affecting the other two. Concentrate on any one of the items in this "finishing triangle" and the operation will start to suffer problems in the other two key areas. Two of the main types of spraying equipment are available - High Volume Low Pressure (HVLP) and Airless - and both have different starting points within this triangle. Note de contenu : - Conventional spray systems and the atomisation process - HVLP and compliant spray systems - Airless spray systems - Droplet size, penetration and quality of finish - HVLP/Compliant or Airless ? - Panel I : Systems for the fluid sypply - Fig. 1 : Atomisation - Fig. 2 : Bounce Back - Fig. 3 : Typical Droplet size En ligne : https://drive.google.com/file/d/1GrTZQ6q9vVpXnRhGAL-l7r5aC2dZYVwE/view?usp=drive [...] Format de la ressource électronique : pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32221 [article]

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Development of SEDDS formulation containing caffeine for dermal delivery / Igor de Andrade Assunção de Almeida in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 2 (03-04/2023)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° 2 (03-04/2023) . - p. 255-265 Titre : Development of SEDDS formulation containing caffeine for dermal delivery Type de document : document électronique Auteurs : Igor de Andrade Assunção de Almeida, Auteur ; Thiago da Silva Honório, Auteur ; Flavia Almada do Carmo, Auteur ; Zaida Maria Faria de Freitas, Auteur ; Lucio Mendes Cabral, Auteur ; Letícia Coli Louvisse de Abreu, Auteur Année de publication : 2023 Article en page(s) : p. 255-265 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Amincissants Caféine Caractérisation Cellules -- Cultures et milieux de culture Cellulite Dermo-cosmétologie Emulsions -- Emploi en cosmétologie Essais (technologie) Formulation (Génie chimique) Médicaments -- Administration par voie cutanée Nanoémulsions Peau -- Soins et hygiène Perméation Potentiel zeta Solubilité Taille des gouttelettes Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : The objective of this work was to develop a self-emulsifying drug delivery system (SEDDS) containing caffeine for the treatment of cellulite. - Methods : SEDDS were prepared using the solution method. 0.5% (w/v) caffeine was added to the previously selected excipients. The system was characterized by droplet size, zeta potential, emulsification time and long-term stability. In vitro release and skin permeation were investigated using Franz-type diffusion cells. The cytotoxicity was evaluated on normal human keratinocytes. - Results : Caffeine SEDDS were thermodynamically stable, with a zeta potential less than - 22 mV and droplet size around 30 nm, and were long-term stable. The permeation study showed that the formulation promoted caffeine accumulation in the skin layers, suggesting an increase in local circulation. Cytotoxicity studies on HaCaT cells were not conclusive as the surfactant used indicated false-positive results due to its high molar mass. - Conclusion : It was possible to obtain a stable SEDDS that could cause an increase in blood flow in the applied area, resulting in cellulite reduction. Note de contenu : - MATERIALS AND METHODS : Preparations of self-emulsifying drug delivery systems - Characterization of self-emulsifying drug delivery systems - Measurement of droplet size, polydispersity index and zeta potential - Cytotoxicity evaluation in HaCaT cells - Statistical analysis - RESULTS AND DISCUSSION : Preparation of SEDDS caffeine formulations - Characterization of SEDDS - Evaluation of the permeation profile - Formulation safety - Table 1 : SEDDS formulations - Table 2 : Nanoemulsion classification system - Table 3 : Solubility tests - Table 4 : Droplet size results - Table 5 : Initial zeta potential and after 6 months - Table 6 : Stability study T0 and T6 months DOI : https://doi.org/10.1111/ics.12841 En ligne : https://drive.google.com/file/d/1-ASq7IknoSSPuChlSeOqGI4aCCpdvrOi/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39175 [article]

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Dimensional analysis of droplet size and ligament length during high-speed rotaryh bell atomization / Lutz Gödeke in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)  

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Droplet shedding on hydrophilic and superhydrophobic surfaces under the effect of air shear flow / Tao Shi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)  

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Droplet size distribution in sprays of waterborne paint / Steffen Rohlmann in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 13, N° 3 (2020)

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Efficiency of emulsifier-free emulsions in delivering caffeine and a-tocopherol to human skin / Hichem Kichou in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 3 (06/2023)  

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Etude rhéologique et granulométrique des émulsions d'huile de coupe - Effet de la température / L. Benali in LES CAHIERS DE RHEOLOGIE, Vol. XIV, N° 2 (09/1995)

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Measurements meet perceptions : rheology-texture-sensory relations when using green, bio-derived emollients in cosmetic emulsions / An Huynh in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 1 (02/2021)  

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Optimization and development of stable w/o/w cosmetic multiple emulsions by means of the quality by design approach / Anita Kovács in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 38, N° 2 (04/2016)  

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Physical and material properties of an emulsion-based lipstick produced via a continuous process / Akash Beri in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 36, N° 2 (04/2014)  

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Preliminary 1 month stability screening of cosmetic multiple emulsions (W/O/W) prepared using cetyl dimethicone copolyol and polysorbate 80 / H. Khan in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 37, N° 1 (02/2015)  

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Stability of lipid nanoparticles for hair conditioning formulations / Wan-Goo Cho in SOFW JOURNAL, Vol. 142, N° 6 (06/2016)  

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Sucrose esters concentrated emulsion technology / François van Etten in PERSONAL CARE EUROPE, Vol. 14, N° 2 (04/2020)  

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Technologie d'émulsion concentrée d'esters de sucrose / François van Etten in EXPRESSION COSMETIQUE, N° Hors série (11/2018)  

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The characterization of the semi-solid W/O/W emulsions with low concentrations of the primary polymeric emulsifier / D. Vasiljevic in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 27, N° 2 (04/2005)  

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