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Recyclage de pare-chocs automobiles : caractérisations microstructurale et mécanique avec suivi de l’endommagement / Laurence Chocinski-Arnault in MATERIAUX & TECHNIQUES, Vol. 100, N° 5 (2012)
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Titre : Recyclage de pare-chocs automobiles : caractérisations microstructurale et mécanique avec suivi de l’endommagement Type de document : texte imprimé Auteurs : Laurence Chocinski-Arnault, Auteur ; Fabienne Touchard, Auteur ; M. P. Buron, Auteur Année de publication : 2012 Article en page(s) : p. 425-435 Note générale : Bibliogr. Langues : Français (fre) Catégories : Analyse mécanique dynamique
Analyse thermique
Caractérisation
Cavitation
Endommagement (mécanique)
Matières plastiques -- Recyclage
Microscopie électronique à balayage
Microstructures
Pare-chocs
Polymères -- Propriétés mécaniques
PolypropylèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : Cette étude porte sur des pare-chocs recyclés à base de polypropylène-choc. Les matériaux sont soit issus des rebuts de production de pare-chocs neufs, peints ou non, soit issus de pare-chocs de véhicules hors d’usage (VHU) ayant subi un tri standard ou très sélectif. Des différences microstructurales ont été identifiées, par DSC et DMA, entre les matériaux issus des rebuts de production et ceux provenant de VHU. Ces matériaux recyclés soumis à des essais de traction s’endommagent par cavitation; cet endommagement a été suivi et quantifié à différents stades de déformation à partir de mesures de variation de volume. Pour une déformation donnée, les matériaux issus de VHU s’endommagent plus que ceux issus des rebuts de production. De plus, le rôle néfaste de la peinture sur la tenue en déformation a été mis en évidence. Enfin, la sélectivité du tri ne semble pas être un critère influant sur les caractéristiques mécaniques en traction et sur l’endommagement. Note de contenu : - MATERIAUX ET TECHNIQUES EXPERIMENTALES : Matériaux extrudés - Techniques de caractérisation
- RESULTATS ET DISCUSSION : Analyse microstructurale des matériaux recyclés - Comportement mécanique - Endommage par cavitationDOI : http://dx.doi.org/10.1051/mattech/2012006 En ligne : http://www.mattech-journal.org/articles/mattech/pdf/2012/05/mt110076.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16836
in MATERIAUX & TECHNIQUES > Vol. 100, N° 5 (2012) . - p. 425-435[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14427 - Périodique Bibliothèque principale Documentaires Disponible Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings / Cheng Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)
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Titre : Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings Type de document : texte imprimé Auteurs : Cheng Wang, Auteur ; Siqi Huo, Auteur ; Shi Liu, Auteur ; Qinghua Hu, Auteur ; Qi Zhang, Auteur ; Zhitian Liu, Auteur Année de publication : 2021 Article en page(s) : p. 447-458 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Eau
Emulsions
Formulation (Génie chimique)
Intumescence (chimie)
Magnésium -- Alliages
Polyacrylates
Recyclage (déchets, etc.)
Résistance à l'humidité:Résistance à l'eau
Revêtements protecteurs
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : The rapid development and widespread application of magnesium alloy bring about a significant amount of magnesium alloy scrap. Thus, we offer a feasible and simple way to realize the recycling of magnesium scrap in this work, applying it as a synergist in the intumescent fire-retardant coatings for steel structure. With the introduction of magnesium scrap, the fire resistance, thermal stability, and water tolerance of the as-prepared coatings significantly improved. According to ASTM E119 standards, the fire resistance of coatings was investigated in our laboratory. Adding only ~ 0.48 wt% of the scrap decreased the backside temperature of the coated steel from 310°C to 171°C, with a ~ 44.8% reduction, indicating obvious synergy. Moreover, the coating containing ~ 0.48 wt% scrap exhibited excellent thermal stability and water resistance, and its char yield at 800°C and water contact angle reached up to 27% and 80.6°, respectively. Based on the analysis of flame-retardant mechanism, the scrap and intumescent fire-retardant system jointly promoted the formation of an intumescent and compact char residue, thus suppressing the heat transfer and protecting the steel. Hence, using magnesium alloy scrap as a synergist contributed to realizing the recycling of waste and providing practical intumescent fire-retardant coatings for structural steel. Note de contenu : - EXPERIMENTAL : Materials - Preparation of scrap-modified core–shell polyacrylate emulsions - Preparation of intumescent fire-retardant coatings - Characterizations
- RESULTS AND DISCUSSION : Characterization of magnesium alloy scrap - Stability of the scrap-modified core–shell emulsion - Fire resistance of coatings - Influence of scrap on the char residue - Thermal stability of coatings - Water tolerance of coatings
- Table 1 : The formulation of core–shell polyacrylate emulsion
- Table 2 : The compositions of intumescent fire-retardant coatings
- Table 3 : Contents of C, O, Mg, Al, Si, and Ca in magnesium alloy scrap
- Table 4 : The influence of scrap on the stability of emulsionDOI : https://doi.org/10.1007/s11998-020-00413-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00413-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35606
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 447-458[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22701 - Périodique Bibliothèque principale Documentaires Disponible Reduce costs and increase sustainability through the use of low-waste non-crimp fabrics / Konrad Zierold in TECHNICAL TEXTILES, Vol. 65, N° 5 (12/2022)
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Titre : Reduce costs and increase sustainability through the use of low-waste non-crimp fabrics Type de document : texte imprimé Auteurs : Konrad Zierold, Auteur ; Lars Hahn, Auteur ; Chokri Cherif, Auteur Année de publication : 2022 Article en page(s) : p. 274-276 Note générale : Bibliogr. Langues : Multilingue (mul) Catégories : Caractérisation
Composites à fibres
Coût -- Contrôle
Déchets -- Réduction
Durée de vie (Ingénierie)
Structure biaxiale
Textiles et tissus sans plis
TricotIndex. décimale : 677 Textiles Résumé : Is it possible to produce complexly contoured composite components from multiaxial non-crimp fabrics without having to dispose of half of the expensive high-performance fiber material as waste ? A new technology for the production of low-cost biaxial fabrics with little waste was developed at the ITM on the basis of warp-knitting technology for lightweight applications suitable for large series production. For this purpose, an alternating weft yarn system was derived as the preferred variant from several solution approaches developed and successfully implemented on a multiaxial warp knitting machine by means of a retrofittable splicing module. This enables to process the high-performance weft yarns for textile semi-finished products close to the final contour, regardless of the machine width. The amount of waste in the weft direction can be reduced by up to 90%, depending on the fiber component. This makes the production of complexly contoured FRP components more material-efficient and sustainable. Note de contenu : - Starting situation and problem
- Technical development and implementation
- Material characterization and results
- Fig. 1 : Concept illustration for the production of cost-reduced scrims based on alternating weft yarns
- Fig. 2 : CAD sectional view of the splice module for inline production of an alternating weft thread
- Fig. 3 : Implemented splice module
- Fig. 4 : Low-waste, cost-reduced non-crimp fabric : semi-finished product contour after cutting
- Fig. 5 : Technology demonstrator using the example of an FKV passenger fenderEn ligne : https://drive.google.com/file/d/1sa56uyyFVxqsV-N_0ROTKU_WMgJF6GTf/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38751
in TECHNICAL TEXTILES > Vol. 65, N° 5 (12/2022) . - p. 274-276[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23779 - Périodique Bibliothèque principale Documentaires Disponible Regenerating leather waste for flexible pressure sensing applications / Jie Lei in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
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Titre : Regenerating leather waste for flexible pressure sensing applications Type de document : texte imprimé Auteurs : Jie Lei, Auteur ; Binghua Zou, Auteur ; Runan Zhang, Auteur ; Kang Zhang, Auteur ; Ruijie Xie, Auteur ; Weina Zhang, Auteur ; Jiansheng Wu, Auteur ; Li Sheng, Auteur ; Bing Zheng, Auteur ; Fengwei Huo, Auteur Année de publication : 2019 Article en page(s) : 9 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Capteurs de pression
Caractérisation
Collagène
Couches minces
Cuirs et peaux -- Déchets -- Recyclage
Détecteurs de mouvement humain
Matériaux filmogènes
Reconnaissance vocale
Souplesse (mécanique)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Pressure sensor can be applied in a wide range of fields, such as voice recognition, human motions detection and artificial electronic skin, the sensing of which is greatly influenced by the flexibility and stretchability of substrate materials. Here, based on the piezoresistive effect, new kinds of flexible pressure sensors have been realized from a pair of flexible and biocompatible collagen films: one is coated by silver nanowires (Ag NWs) and the other by interdigital electrode, respectively. The collagen films are regenerated from leather waste and could bring economic benefits to society. The prepared pressure sensors are applied for voice recognition and human motion detection. Note de contenu : - MAIN TEXT : Preparation and Properities of the flexible collagen film
Preparation and performances of the flexible pressure sensor - Human physical motions sensing - Voice recognition sensing
- EXPERIMENTAL SECTION : Preparation of the collagen films - Characterization of the collagen films - Fabrication of the flexible pressure sensor - Performances of the flexible pressure sensorDOI : https://doi.org/10.1186/s42825-019-0009-5 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-019-0009-5.pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36952
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 1 (Année 2019) . - 9 p.[article]Regeneration of raw hide water balance by electrochemically activated water / A. H. Danylkovych in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 10 (10/2020)
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Titre : Regeneration of raw hide water balance by electrochemically activated water Type de document : texte imprimé Auteurs : A. H. Danylkovych, Auteur ; O. I. Korotych, Auteur ; O. Romaniuk, Auteur Année de publication : 2020 Article en page(s) : p. 355-364 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Cuir et peau de cheval
Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés mécaniques
Electrochimie
Humidité -- Absorption:Eau -- Absorption
Peaux brutes -- Trempe
Solutions aqueuses (chimie)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Improving the collagen structure, which was impacted by the curing process, increases the efficiency of all subsequent structural transformations during leather production and results in the formation of a high-quality leather material. Herein, we studied the process of soaking green-salted horsehides in electrochemically activated aqueous solutions and the properties of resulting chrome-tanned leather. It was found that the process of soaking horsehides can be effectively carried out using an electrochemically activated solution (ECAS) – a mixture of catholyte and anolyte at a volume ratio of 5 : 1. Using this soaking solution, sodium sulfide (an environmentally harmful reagent), sodium carbonate, and detergent can be completely excluded from the technological solution. The use of ECAS at the soaking stage effectively regenerates the water balance of horsehides while maintaining a stable pH during the soaking process and increases the efficacy of liming and all subsequent processes. Considering the prominent structural differences (density and thickness) between the front and shell of horsehide, the developed method, which utilize ECAS for soaking, allows the entire process to be carried out on uncut horse hides instead of processing two parts separately, which is normally required. The chrome-tanned leather produced by the developed method in semi-industrial conditions has elastic-plastic properties which are superior compared to the leather produced by current technology. The developed method also results in increasing the area yield by 2.5%. The resulting elastic leather can be used for manufacturing a variety of articles, including clothing, accessories, and footwear. Note de contenu : - MATERIALS AND METHODS : Laboratory testing - Semi-industrial testing - Physicochemical characterization
- RESULTS AND DISCUSSION : Structure and composition of raw hides - Water absorption by horsehide - Properties of the horse leather produced in semi-industrial conditionsDOI : https://doi.org/10.34314/jalca.v115i10.4173 En ligne : https://drive.google.com/file/d/1bLcuV1I1rbEzlX_BGYBxTNFiJbEz5PRL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34610
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 10 (10/2020) . - p. 355-364[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22361 - Périodique Bibliothèque principale Documentaires Disponible Regulate solar irradiation with smart microshutters / Kewei Jiang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)
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PermalinkRelationship between physical and chemical characteristics of vegetable tanned sole leathers of indian origin / G. Gangi Reddy in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61, N° 6 (11-12/1977)
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PermalinkRelationships between crystallization behavior and application properties of chemically coupled PAI-PTFE coatings / Michaela Genan-Smolka in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)
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PermalinkRemoval of anionic dye from tannery wastewater using peanut shell waste as a biosorbent / Samantha Feron de Moraes in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 1 (01/2023)
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PermalinkRepair and replacement of concrete pipes with carbon composites / Francesc Robles in JEC COMPOSITES MAGAZINE, N° 119 (03/2018)
PermalinkResearch on two-step synthesis method of 12-hydroxystearate diethanolamide / Ziling Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 2 (03-04/2023)
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PermalinkRetanning performance of carboxymethyl starch and its effects on dyeing / Cigdem Kilicarislan Ozkan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 2 (02/2022)
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PermalinkPermalinkReversible thermochromic performance of cresol red-boric acid system loaded on fibrous mesoporous silica microspheres coating material / Tinting Yu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)
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PermalinkA review on graphene/rubber nanocomposites / Arunkumar Murugesan in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 5 (2022)
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PermalinkA review on microencapsulated phase change materials in building materials / Soham Sharad Chaudhari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
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PermalinkReview on thermochromic materials : development, characterization, and applications / Abdullatif Hakami in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 2 (03/2022)
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PermalinkRheological characterisation of complex fluids by means of relaxation and retardation spectra / J. M. Madiedo in LES CAHIERS DE RHEOLOGIE, Vol. XVI, N° 1 (10/1998)
PermalinkRheological characterization and thermal stability of different intrinsic viscosity poly(ethylene terephthalate) in air and nitrogen / S.-C. Chen in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 3 (07/2016)
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PermalinkRheological characterization of the thermal gelation of poly(n-isopropylacrylamide) and poly(n-isopropylacrylamide) co-acrylic acid / Filipe E. Antunes in APPLIED RHEOLOGY, Vol. 19, N° 4 (2009)
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