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Auteur Samuel Kenig
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Shenkar College of Engineering and Design - Israël
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Cost-effective corrosion barriers / Samuel Kenig in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2016)
[article]
Titre : Cost-effective corrosion barriers : Novel epoxy nanoclay composites keep costs down whilst improving performance Type de document : texte imprimé Auteurs : Samuel Kenig, Auteur ; Roberto Cafagna, Auteur Année de publication : 2016 Article en page(s) : p. 28-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosion
Argile
Epoxydes
Hydrophilie
Matériaux -- Propriétés barrières
Nanoparticules
Résistance à la flamme
Résistance électrique
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : Small quantities of functionalised nanoclays hold great potential for the performance of conventional paint systems. Exfoliation, chemical compatibility and orientation are critical to enhance the barrier properties, resulting in improved corrosion resistance and fire retardancy. The novel coatings discussed in this article entail that a variety of different substrates can benefit from these properties. Note de contenu : - Surface treatment key for greatest barrier properties
- Hydrophilic nanoclay increases oxygen and humidity barrier
- Nanoclays reduce blistering and increase electrical resistance
- Functionalised nanoparticles enhance flame retardancy
- Anti-corrosion performance and fire retardancyEn ligne : https://drive.google.com/file/d/1ocfdgi4ivOmg-lsI22Wn2qrm74TA3Sxm/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26725
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2016) . - p. 28-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18224 - Périodique Bibliothèque principale Documentaires Disponible Improving weld line strength of fiber reinforced plastics by means of a "flow disruptor" / Fabian Rios Rios in INTERNATIONAL POLYMER PROCESSING, Vol. XXVIII, N° 3 (07/2013)
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Titre : Improving weld line strength of fiber reinforced plastics by means of a "flow disruptor" Type de document : texte imprimé Auteurs : Fabian Rios Rios, Auteur ; M. Reuven-Zada, Auteur ; R. Kol, Auteur ; S. Yoffe, Auteur ; Samuel Kenig, Auteur Année de publication : 2013 Article en page(s) : p. 314-321 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres
Fibres
Matières plastiques -- Propriétés mécaniques
Matières plastiques -- Soudage
PolypropylèneTags : Polypropylène 'Effacement ligne soudure' Renfort Fibres 'Soudage plastique' 'Propriétés mécaniques' 'Ecoulement perturbateur' Index. décimale : 668.4 Plastiques, vinyles Résumé : The presence of weld lines can cause a significant reduction in the mechanical properties of injection molded plastic parts, especially when they contain minerals additives or fiber reinforcements, and it is a common reason for their failure. In this work a method for modifying the flow pattern in the weld line zone using a "flow disruptor" is proposed to strengthen the weld lines of fiber reinforced polypropylene. The flow disruptor is a small insert introduced inside the injection molding cavity, in the weld line area, and its objective is to mix the melt and disrupt fountain flow in order to blur and erase the weld line. The method is simple and low cost, does not require special machines or molds and does not affect the part shape or surface. Flow disruptors were designed, their effects analyzed by using simulation software, fabricated from different materials and encapsulated within injection molded tensile test samples for mechanical properties evaluation. The results of this work demonstrate that the mechanical properties in the weld line can be improved by the use of a well designed flow disruptor, made from suitable materials. DOI : 10.3139/217.2745 En ligne : https://drive.google.com/file/d/1KYSaDJhjl3aPeg_2gKEBfU2WHqah2FDR/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19021
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVIII, N° 3 (07/2013) . - p. 314-321[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15238 - Périodique Bibliothèque principale Documentaires Disponible Multifunctional coating based on nano fillers and natural substances / Roberto Cafagna in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4647 (12/2018)
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Titre : Multifunctional coating based on nano fillers and natural substances Type de document : texte imprimé Auteurs : Roberto Cafagna, Auteur ; Samuel Kenig, Auteur Année de publication : 2018 Article en page(s) : p. 23-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact
Anticorrosifs
Anticorrosion
Antimicrobiens
Argile
Charges (matériaux)
Epoxydes
Essais de brouillard salin
Essais de résilience
Marines (peinture)
Marines (peinture) -- Aspect de l'environnement
Nanoparticules
Primaire (revêtement)
Revêtements antisalissures:Peinture antisalissures
Revêtements multicouches
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
VanillineIndex. décimale : 667.9 Revêtements et enduits Résumé : The demands of the marine industry for functional coatings are diversified : From corrosion protection of the ship's hull, through to anti fouling characteristics and reduced friction with the aim to save fuel and improve a vessels performance. Furthermore, new environ mental regulations regarding antifouling coating systems require the elimination of toxins release, which led to the development and adoption of new more environmentally friendly technologies. Consequently, the present research proposes a multifunctional coating system, exploiting nanotechnology and biotechnology, in order to meet the antifouling and anticorrosion requirements of the marine industry. Three innovative, environmentally friendly coating systems were developed exploiting the properties of functionalised nanoclays, treated nanosilicas and novel ecologically compatible anti-microbial reduced adhesion agent based on natural su bstances.These coatings are based on unique cross proprietary patented technologies and can be integrated to give a multifunctional and multilayer protection system. Note de contenu : - EXPERIMENTAL : Functionalised nanoclays - Tailored nanosilica - Natural antifouling agent
- DESCRIPTION OF COATING SYSTEM 1 : Primer and intermediate
- DESCRIPTION OF COATING SYSTEM 2 : Primer and intermediate - Topcoat
- DESCRIPTION OF COATING SYSTEM 3 : Primer and intermediate - Final layer
- Table 1 : Coating system 1 (based on nanoclays)
- Table 2 : Coating system 2 (nanoclays + vanillin)
- Table 3 : Coating system 3 (nanoclays + nanosilicas)
- Table 4 : Corrosion test in artificial atmosphere/salt spray test according to ISO 9227
- Table 5 : Epoxy silicone systems containing SNPs exhibited up to 36% decrease in drag compared to the same coating without SNPs
- Fig. 1 : Epoxy primer and intermediate with functionalised nanoclays - FESEM analysis
- Fig. 2 : Examples of super hydrophobic surfaces (SHS) obtained by silica nanoparticles
- Fig. 3 : Corrosion test in artificial atmosphere/salt spray test according to ISO 9227
- Fig. 4 : Aggressive liquid resistance test : standard UNI EN ISO 2812-1 caustic soda 10 %
- Fig. 5 : Aggressive liquid resistance test : standard UNI EN ISO 2812-1 sulphuric acid 10 %
- Fig. 6 : System 1 on field application on the URSUS boat
- Fig. 7 : Testing of biofouling proliferation on an epoxy topcoat with vanillin
- Fig. 8 : Contact angle measurements of epoxy-silicone systems with silica nano-particles (SNPs) in either aprotic of protic solvent
- Fig. 9 : Proposed mechanism of modified nanoclays orientation on a high surface energyEn ligne : https://drive.google.com/file/d/1B0jwybe1XVrsPIVBQS0kdfxUwsZFWuSi/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31515
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4647 (12/2018) . - p. 23-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20463 - Périodique Bibliothèque principale Documentaires Disponible Processing of polymer nanocomposites / Samuel Kenig / Munchen [Germany] : Hanser (2019)
Titre : Processing of polymer nanocomposites Type de document : texte imprimé Auteurs : Samuel Kenig, Editeur scientifique ; Musa R. Kamal, Editeur scientifique Editeur : Munchen [Germany] : Hanser Année de publication : 2019 Importance : XX-497 p. Présentation : ill. Format : 25 cm ISBN/ISSN/EAN : 978-1-56990-635-4 Prix : 230 E Note générale : Index - Bibliogr. Langues : Anglais (eng) Catégories : Argile
CelluloseLa cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Charges (matériaux)
Composites -- Extrusion
Composites -- Moulage par injection
Couches minces multicouches
HalloysiteL'halloysite-7Å est une espèce minérale du groupe des silicates sous-groupe des phyllosilicates de formule Al2Si2O5(OH)4 avec des traces de : Ti ; Ca ; Na ; K ; Fe ; Cr ; Mg ; Ni ; Cu. Ses principaux constituants, outre l'oxygène, sont l’aluminium (20,90 %), le silicium (21,76 %), et l’hydrogène (1,56 %).
Hydroxydes doubles lamellaires
Matériaux hybrides
Mousses plastiques
Nanotechnologie
Nanotubes
Polymères
Rhéologie
ThermocinétiqueIndex. décimale : 668.4 Plastiques, vinyles Résumé : Nanocomposites have been of high research interest in the past decades and practical applications are now emerging. Although there have been previous works on nanocomposites, this book offers a current overview with a special emphasis on processing.
The processing of nanocomposite polymers is the most important stage bridging the technology between the composition of the nanocomposites and their final properties and derived applications, due to the structuring during processing of the polymer at the nanoscale. This book covers the fundamental aspects involved in the processing of thermoplastic and thermoset nanocomposites. The processing methods include extrusion, injection molding, blow molding, thermoforming, and compression molding. Also covered are nanoparticle dispersion, distribution, and compatibilization, and applications of polymer nanocomposites.
Edited and written by leading experts in the field, this book is a major contribution to a growing and exciting area of research, focusing on :
- Dispersion and distribution of nanoparticles using sonication, roll mixing, shear mixing, elongational mixing, solvent mixing, melt mixing, and in situ polymerization
- Functionalization of nanoparticles for compatibilization with various polymer systems
- Processing of polymer nanocomposites, including rheology as well as nanoparticles’ orientation development during extrusion and injection molding
- The effect of dispersion, functionalization, and processing technologies on orientation, morphology, and derived nanocomposite mechanical, thermal, electrical, and physical propertiesNote de contenu : 1. The effect of processing conditions on the dis per sion and microstructure of organoclay/poly propylene nanocomposites in twin-screw extrusion
2. Ultrasound-assisted processing of nanocomposites
3. Monitoring dispersion and re-agglomeration phenomena during the manufacture of polymer nanocomposites
4. The effect of dispersion and particle-matrix interactions on the fatigue behavior of novel epoxy/halloysite nanocomposites
5. Effect of melt processing on multi-walled carbon nanotube length
6. Microinjection molding of filler-loaded polymer nanocomposites
7. Polymer nanocomposites and multilayer nanocomposite films by coextrusion
8. The effect of foaming on the properties of carbon nanotubes/polymer composites
9. The effect of solid-state shear processing on the network formation of clay-based polymer nanocomposites
10. Orientation development during processing of nanocomposite polymers
11. Anomalous viscoelastic behaviors of polymer nanocomposites during shear and extensional deformations
12. Polymer nanocomposites based on layered double hydroxides (ldhs)
13. Polymer-cellulose nanocrystal (cnc) nanocomposites
14. Cellulose nanocrystals : particles and polymer nanocomposites
15. Processing and properties of carbon nanotubes/glass/epoxy nanocomposites
16. Processing influence on thermal conductivity of polymer nanocompositesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36938 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23198 668.4 KEN Monographie Bibliothèque principale Documentaires Disponible The effect of superhydrophobic surface topography on underwater corrosion resistance of steel / Keqin Zheng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)
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Titre : The effect of superhydrophobic surface topography on underwater corrosion resistance of steel Type de document : texte imprimé Auteurs : Keqin Zheng, Auteur ; Jinde Zhang, Auteur ; Erin Keaney, Auteur ; Hanna Dodiuk, Auteur ; Samuel Kenig, Auteur ; Carol Barry, Auteur ; Joey Mead, Auteur Année de publication : 2021 Article en page(s) : p. 685-693 Note générale : Bibliogr. Langues : Américain (ame) 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.
Anticorrosifs
Anticorrosion
Epoxydes
Hydrophobie
Matériaux hybrides
Métaux -- Revêtements protecteurs
Revêtements organiques
Surfaces (Physique)
TopographieIndex. décimale : 667.9 Revêtements et enduits Résumé : This article describes the study of the topography effect of superhydrophobic surfaces on the corrosion protection performance of steel through the air plastron behavior when subjected to an underwater environment. A random superhydrophobic surface was fabricated using spray coating and characterized for morphology and wettability by scanning electron microscopy (SEM) and goniometer measurements, respectively. By comparing the coated surfaces both with and without air plastron, it was found that superhydrophobicity postponed the corrosion of the coated steel specimens. This increase in corrosion protection of the superhydrophobic surface was due to the air plastron created by the superhydrophobicity in underwater immersion. Since different areas showed differing air plastron lifetimes (wetting behavior), it was assumed that the underlying topography of the superhydrophobic coating controlled the air plastron lifetime. To investigate this behavior, the micron scale topography of the different areas was studied using the technique of laser confocal microscopy over the specific areas and correlating with air plastron lifetime. Using the theoretical analysis based on superhydrophobic robustness and assuming the solid fraction is the same for different locations, it was demonstrated that the feature size [extracted by roughness analysis as root-mean-square (RMS)] correlated with the air plastron lifetime. It was confirmed from the plot of RMS and air plastron lifetime that smaller feature sizes could extend the air plastron lifetime and provide better anticorrosion performance. Note de contenu : - EXPERIMENTAL : Materials - Pretreatment of steel substrate - Preparation of superhydrophobic coating - Wettability characterization - Air plastron real-time observation - Corrosion resistance evaluation - Topography characterization
- RESULTS AND DISCUSSION : Plastron real-time observation - Corrosion resistance of superhydrophobic coatings - The effect of topography on air plastron lifetimeDOI : https://doi.org/10.1007/s11998-020-00433-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00433-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35922
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 3 (05/2021) . - p. 685-693[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22785 - Périodique Bibliothèque principale Documentaires Disponible The reduction in ice adhesion using controlled topography superhydrophobic coatings / Yujie Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
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