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Primed for VOC reduction / Marie Josée Déry-Chauvette in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2017)
[article]
Titre : Primed for VOC reduction : Development and field trials of a novel high solids epoxy primer Type de document : texte imprimé Auteurs : Marie Josée Déry-Chauvette, Auteur ; Tony Doyle, Auteur ; Reginald Horne, Auteur ; Marcus Pfarherr, Auteur ; Brandon Wilson, Auteur ; Jeremy Ethington, Auteur Année de publication : 2017 Article en page(s) : p. 48-52 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Epoxydes
Essais (technologie)
Essais d'adhésion
Essais de résilience
Haut extrait sec
Primaire (revêtement)
Test d'immersionIndex. décimale : 667.9 Revêtements et enduits Résumé : While high solids solvent-borne epoxies are the leading technology for heavy-duty primers, they may have poor application properties and limited corrosion resistance. Laboratory evaluations and field trials are reported on a novel epoxy that combines very low VOCs with the desirable properties of higher VOC formulations. Note de contenu : - Involving all stakeholders helps to ensure success
- Voc and application properties comparison
- Film build and application latitude enhanced
- Performance attributes compared and summarised
- Contractor training leads to successful field trial
- Three different priming systems evaluated
- High performance and flexibility in application
- FIGURES : 1. Viscosity increase over time by digital Stormer viscometer after mixing epoxy primers (Volume solids : Com 0,85% ; Com 2, 100% ; LVE-T, 96%) - 2. Results of chemical immersion tests - 3. Salt spray test results - 4. QUV B exposure results, comparing new system with two commercial products - 5. Overcoat adhesion values at different temperatures and time intervals for LVE-TP, direct to metal (DTM), on self and with top coat
- TABLES : 1. Summary of basic properties and performance attributes important for the application of paint, comparing trial paint to three commercial products - 2. Performance attributes for trial paint and three commercial products - 3. Detailed job description for the coating of tank 2En ligne : https://drive.google.com/file/d/1ROTyX8cMGaSjoMBexlFCsChNXWAf1K3y/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28819
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2017) . - p. 48-52[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19166 - Périodique Bibliothèque principale Documentaires Disponible Process chain for the production of hybrid medical products / Moritz Mascher in KUNSTSTOFFE INTERNATIONAL, Vol. 112, N° 3 (2022)
[article]
Titre : Process chain for the production of hybrid medical products : Combined deep-drawing and backmolding process with mechanically interlocking joint Type de document : texte imprimé Auteurs : Moritz Mascher, Auteur ; Christoph Engelmann, Auteur ; Stefan Behrens, Auteur ; Christian Hopmann, Auteur Année de publication : 2022 Article en page(s) : p. 28-31 Langues : Anglais (eng) Catégories : Aluminium L'aluminium est un élément chimique, de symbole Al et de numéro atomique 13. C’est un métal pauvre, malléable, de couleur argent, qui est remarquable pour sa résistance à l’oxydation13 et sa faible densité. C'est le métal le plus abondant de l'écorce terrestre et le troisième élément le plus abondant après l'oxygène et le silicium ; il représente en moyenne 8 % de la masse des matériaux de la surface solide de notre planète. L'aluminium est trop réactif pour exister à l'état natif dans le milieu naturel : on le trouve au contraire sous forme combinée dans plus de 270 minéraux différents, son minerai principal étant la bauxite, où il est présent sous forme d’oxyde hydraté dont on extrait l’alumine. Il peut aussi être extrait de la néphéline, de la leucite, de la sillimanite, de l'andalousite et de la muscovite.
L'aluminium métallique est très oxydable, mais est immédiatement passivé par une fine couche d'alumine Al2O3 imperméable de quelques micromètres d'épaisseur qui protège la masse métallique de la corrosion. On parle de protection cinétique, par opposition à une protection thermodynamique, car l’aluminium reste en tout état de cause très sensible à l'oxydation. Cette résistance à la corrosion et sa remarquable légèreté en ont fait un matériau très utilisé industriellement.
L'aluminium est un produit industriel important, sous forme pure ou alliée, notamment dans l'aéronautique, les transports et la construction. Sa nature réactive en fait également un catalyseur et un additif dans l'industrie chimique ; il est ainsi utilisé pour accroître la puissance explosive du nitrate d'ammonium.
Assemblages multimatériaux
Emboutissage
Essais d'adhésion
Matériel médical
Matières plastiques -- Surmoulage
Polymères en médecineIndex. décimale : 668.4 Plastiques, vinyles Résumé : Pharmaceutical crimp caps generally consist of a thin aluminum sheet and a plastic component, and are used to seal medical vials, for example for vaccines. Through a combined deep-drawing and backmolding process with previous inline laser treatment of the thin aluminum sheet, the process can be significantly shortened. The media-proof joining together of the two materials is carried out through a mechanically interlocking connection. Note de contenu : - Laser treatment of thin aluminum sheets
- Compromise between bond strength and aluminum sheet damage
- Deep-drawing of structured thin aluminum sheet
- Backmolding in the single-cavity mold
- Fig. 1 : Process for the production of mechanically interlocking plastic/aluminum crimp caps: cutting out and structuring of the thin metal sheet, insertion into the mold, forming, backmolding
- Fig. 2 : Optimization of the structure geometry for thin aluminum sheet: through the scanning velocity and the number of passages, the geometry of the structure is adjusted
- Fig. 3 : Mold concept for the combined deep-drawing and backmolding process
- Fig. 4 : Testing the bond strength in a vertical draw-off test (left). Result (right): the vertical draw-off force of the plastic component depends on the structural configuration
- Table 1 : Project participants and their fields of researchEn ligne : https://drive.google.com/file/d/1GZDwIVoSyYc03TZIhP7lZVNIgwqPPsmf/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37707
in KUNSTSTOFFE INTERNATIONAL > Vol. 112, N° 3 (2022) . - p. 28-31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23353 - Périodique Bibliothèque principale Documentaires Disponible A promising ternary nanohybrid of Copper@Zinc oxide intercalated with polyaniline for simultaneous antistatic and antibacterial applications / Abdolreza Mirmohseni in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 5 (09/2019)
[article]
Titre : A promising ternary nanohybrid of Copper@Zinc oxide intercalated with polyaniline for simultaneous antistatic and antibacterial applications Type de document : texte imprimé Auteurs : Abdolreza Mirmohseni, Auteur ; Maryam Azizi, Auteur ; Mir Saeed Seyed Dorraji, Auteur Année de publication : 2019 Article en page(s) : p. 1411-1422 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens
Antistatiques
Cuivre
Essais d'adhésion
Matériaux hybrides
Oxyde de zinc
Polymères en émulsion
Polyuréthanes
Résistance à l'abrasion
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : In this study, a facile and cost-effective approach has been developed for fabricating antibacterial and antistatic waterborne polyurethane (WPU)-based coatings by using Polyaniline-Copper@Zinc oxide (P-Cu@ZnO) ternary nanohybrid as a multifunctional additive. The solid-state reaction of copper acetate and zinc acetate salts led to the synthesis of copper clusters on the ZnO nanoparticles (Cu@ZnO). The obtained Cu@ZnO nanoparticles were intercalated with polyaniline (PANI) chains to prepare the P-Cu@ZnO nanohybrid. FTIR, XRD, UV–Vis, and FESEM analyses were used to characterize the structural, crystallographic, and morphological properties of the synthesized nanohybrid. Adding P-Cu@ZnO nanohybrid to the WPU matrix not only improved adhesion strength of the coatings but also enhanced their scratch resistance compared to the pristine WPU coating. Moreover, incorporation of the obtained nanohybrid into the WPU coatings caused electrical surface resistance of the obtained coatings to reach 1.2 × 10+8 Ω/sq, so, these coatings gained the optimum electrical surface resistance to be counted as an antistatic coating. Also, the results of the colony counting test showed that the modified coatings could reduce the Staphylococcus aureus and Escherichia coli bacteria growth by about 86% and 74%, respectively. Note de contenu : - EXPERIMENTAL : Materials - Prepration of copper decorated zinc oxide (Cu@ZnO) - Synthesis of pure polyaniline (PANI) and polyaniline-copper@zinc oxyde ternary nanohybrid (P-CU@ZnO) - Preparation of waterborne polyurethane dispersion (WPUs) - Preparation of modified waterborne polyurethane coatings - Characterization of polyaniline-copper@Zinc oxide ternary nanohybrid - Confirmation of the presence of Cu clusters in Cu@ZnO nanoparticles by UV-vis study - The proposed mechanism for the formation of copper clusters on the zinc oxide - Evaluation of the coatings' adhesion strength and scratch resistance - Antistatic behavior of waterborne polyurethane based coatings - Investigating antibacterial activity of the waterborne polyurethane coatings DOI : 10.1007/s11998-019-00223-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00223-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33021
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 5 (09/2019) . - p. 1411-1422[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21154 - Périodique Bibliothèque principale Documentaires Disponible Pull-off adhesion strength testing of lining systems on concrete in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 33, N° 1 (01/2016)
[article]
Titre : Pull-off adhesion strength testing of lining systems on concrete : A review of the various direct tensile test methods used for severe service exposures Type de document : texte imprimé Année de publication : 2016 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Essais d'adhésion
Essais dynamiques
Matériaux cimentaires -- Revêtements protecteurs
Normalisation
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Traction (mécanique)Index. décimale : 667.9 Revêtements et enduits Résumé : Tensile pull-off adhesion testing is becoming a more frequent specification requirement for in-situ quality assurance testing to confirm proper surface preparation and adhesion of high-performance protective linings applied to concrete. It is also becoming a widely used test for forensic analysis of protective linings in existing installations. There have been numerous investigations leading to the development of dif¬ferent devices and pull-off adhesion test methods used to assess bond strengths of mortars and overlay materials. Fundamental differences exist between these methods that can dramatically impact tensile strength results. This article presents the common pull-off adhesion test methods used in the United States, as well as the results of experimental research investigating the results using two common tensile strength testers. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25424
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Code-barres Cote Support Localisation Section Disponibilité 17829 - Périodique Bibliothèque principale Documentaires Disponible Qualifying an XYZ robotic adhesive application for freezer assembly / Tim Jones in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 26, N° 10 (10/2019)
[article]
Titre : Qualifying an XYZ robotic adhesive application for freezer assembly : An appliance manufacturer successfully upgraded its freezer assembly process from an outdated XY-applied hot-melt pressure-sensitive adhesive to a fully automated XYZ application Type de document : texte imprimé Auteurs : Tim Jones, Auteur ; Aggie Lotz, Auteur Année de publication : 2019 Article en page(s) : p. 28-32 Langues : Américain (ame) Catégories : Adhésifs -- Application-dosage
Adhésifs thermofusibles
Assemblages collés
Automatisation
Essais d'adhésion
Stabilité thermiqueIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Electrolux is a global manufacturer of appliances ranging from washers and dryers to water heaters and dishwashers. The company’s St. Cloud, Minn., Manufacturing and Quality Assurance (QA) departments had identified a loss in productivity and inconsistent quality in its freezers. As a result, an internal team involving seven Electrolux departments in St. Cloud set out to upgrade from an outdated XY-applied hot-melt pressure-sensitive adhesive (HMPSA) to a fully automated XYZ application process.
At issue was a seemingly underperforming HMPSA. The Manufacturing department’s stopgap of reinforcing the HMPSA with large quantities of 2-in.-wide masking tape, which also required more labor hours, was driving up production costs. Equally important was the issue that the plant’s target for the number of freezers assembled per shift was not being met. An internal consensus was reached: the stopgap had to be replaced.
Representatives from Electrolux’s Manufacturing, Quality Assurance (QA), Manufacturing Engineering, Maintenance, Electrical, Materials Engineering, and Purchasing departments regularly forged solutions through ad-hoc teams to improve plant operations. In this case, the company’s Purchasing department reiterated that Manufacturing’s stopgap was exceeding its bill of materials for the freezer application’s masking tape and labor. QA identified vibration noises in the freezer’s air duct subassembly, resulting in a higher-than-average service call rate (SCR) in the field. The Manufacturing Engineering, Maintenance, and Electrical departments wanted to update unreliable, outdated adhesive application equipment and operating software to mitigate escalating maintenance costs.
Having identified these multiple objectives, the department representatives deployed an ad-hoc development team to address the HMPSA application and the SCR vibration noise. The team’s first order of business was to establish benchmarks.Note de contenu : - Attachment process
- SCR noise mitigation
- Engineering a solution
- Laboratory testing
- Testing on th eplant floor
- XYZ robot applicator installation and testing
- Fig. 1 : Warped air ducts result in unacceptable adhesive pull-away
- Fig. 2 : Acceptable adhesive press-out on an air duct
- Fig. 3 : Acceptable adhesive bead pattern on the perimeter vs unacceptable
- Fig. 4 : Tests were conducted on six different adhesive samples
- Fig. 5 : The heat stability testing frame for the hot chamber. The plastic panel went into the oven inverted hanging upside down on the pre-painted steel
- Table 1 : Adhesion test dataEn ligne : https://www.adhesivesmag.com/articles/97231-qualifying-an-xyz-robotic-adhesive-a [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33223
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 26, N° 10 (10/2019) . - p. 28-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21212 - Périodique Bibliothèque principale Documentaires Disponible Recent advances in silicone PSA technology / Stuart R. Kerr III in ADHESIVES AGE, Vol. 37, N° 10 (09/1994)
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PermalinkRésines à faible émission de styrène in CAOUTCHOUCS & PLASTIQUES, N° 713 (04/1992)
PermalinkA retrospective view of coatings adhesion testing / Walter K. Asbeck in COATINGS TECH, Vol. 2, N° 12 (01/2005)
PermalinkPermalinkSelf-healing and corrosion performance of polyurethane coating containing polyurethane microcapsules / Hanieh Fathi Fathabadi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)
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