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Automotive components made of packaging / Matthias Henning in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 1 (01/2020)
[article]
Titre : Automotive components made of packaging : Circular economy for expanded polypropylene (EPP) Type de document : texte imprimé Auteurs : Matthias Henning, Auteur ; Jens Grunwald, Auteur ; Helge Lüsebrink, Auteur Année de publication : 2020 Article en page(s) : p. 43-46 Langues : Anglais (eng) Catégories : Économie circulaire L'économie circulaire est une expression générique désignant un concept économique qui s'inscrit dans le cadre du développement durable et s'inspirant notamment des notions d'économie verte, d’économie de l'usage ou de l'économie de la fonctionnalité, de l'économie de la performance et de l'écologie industrielle (laquelle veut que le déchet d'une industrie soit recyclé en matière première d'une autre industrie ou de la même).
Son objectif est de produire des biens et services tout en limitant fortement la consommation et le gaspillage des matières premières, et des sources d'énergies non renouvelables ;
Selon la fondation Ellen Mac Arthur (créée pour promouvoir l'économie circulaire1), il s'agit d'une économie industrielle qui est, à dessein ou par intention, réparatrice et dans laquelle les flux de matières sont de deux types bien séparés ; les nutriments biologiques, destinés à ré-entrer dans la biosphère en toute sécurité, et des intrants techniques ("technical nutrients"), conçus pour être recyclés en restant à haut niveau de qualité, sans entrer dans la biosphère
Eléments finis, Méthode des
Matériaux -- Allègement
Matières plastiques -- Recyclage
Matières plastiques dans les automobiles
Polymères -- Propriétés physiques
Polymères expansés
PolypropylèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : Currently, recyclates are in high demand, including the automotive industry. Previously, component suppliers had reservations about using recyclates in safety-related areas, because mechanical properties varied too widely. Now, materials producer JSP has developed an expanded polypropylene with 25 % recyclate content precisely for these application areas. But to ensure high quality, close cooperation with the recycling company is essential. Note de contenu : - EPP in automobiles on the advance
- Circular system with OEMs
- Figure : The use of expanded polypropylene in vehicles, including safety-critical areas such as passenger and pedestrian protection is vastly increasing
- Fig. 1 : Compared with virgin 3PP from JZP, 1 kg of EPP with 25% recyclate content generates 12 % less CO2 emissions
- Fig. 2 : Decommissioned load trays are collected, compacted, and then granulated
- Fig. 3 : At the Eschwege site, the collected load trays are processed to EPP granulate and subsequently examined for key properties in the laboratory
- Fig. 4 : Arpro 5134 RE can be processed using the crack filling or pressure filling method, with or without pressure loading
- Fig. 5 : Finite elements analysis (FEA) with the LS-Dyna software, safety-relevant areas in the automobile, like the pedestrian protection here, are tested via simulation. The area shown red in the simulation consists of EPP and absorbs some of the enrgy in case of a collision, e.g. with a pedestrian's leg
- Table 1 : Physical properties of EPP Arpro 5134 RE for mass concentrations of 45 and 60 g/l
- Table 2 : Plastic waste processed by GID in the automotive sector, itemized acc. to materialsEn ligne : https://drive.google.com/file/d/1T150t3NiZU0xRroQ56A5HDYzTdcIvPVq/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33839
in KUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 1 (01/2020) . - p. 43-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21510 - Périodique Bibliothèque principale Documentaires Disponible Bioplastics with halogen-free flame retardants / Robert Breuer in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 1-2 (01-02/2019)
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Titre : Bioplastics with halogen-free flame retardants : Foamed boards and foamed injection molded parts made from cellulose acetate with a halogen-free flame retardant system and environmentally friendly blowing agents Type de document : texte imprimé Auteurs : Robert Breuer, Auteur ; Yuxiao Zhang, Auteur ; Christian Hopmann, Auteur Année de publication : 2019 Article en page(s) : p. 31-36 Langues : Anglais (eng) Catégories : Acétate de cellulose L'acétate de cellulose est une matière plastique inventée en 1865. C'est l'ester acétate de la cellulose.
Agents de gonflement
Bioplastiques
Essais (technologie)
Essais de comportement au feu
Ignifugeants -- Suppression ou remplacement
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Isolation thermique
Mousses plastiques
Mousses plastiques -- Extrusion
Mousses plastiques -- Moulage par injection
Polymères expansés
PolystyrèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : Foamed polystyrene boards (XPS) have been used for generations in thermal insulation applications, e.g. for buildings. Due to its comparable mechanical and thermal properties, bio-based cellulose acetate (CA) represents a promising, sustainable alternative which is also an interesting material for technical components due to its heat resistance. However, producing such parts by foam extrusion or foam injection molding with halogen-free flame retardant systems and environmentally friendly blowing agents is a challenge. Note de contenu : - Materials used
- Equipmentfor foam extrusion trials
- Equipment for foam injection molding trials
- Foam extrusion of CA compounds with flame retardant system
- Foam injection molding trials
- Resulting density of the extruded foam boards
- Fire behavior of the extruded foam boards
- Injection pressures and foam structures of the injection-molded test specimens
- Fire behavior of the injection molded test specimens
- Figure : Samples of foamed cellulose acetate with halogen-free flame retardant system after the flammability test
- Fig. 1 : Material composition of the tested CA compounds and the polystyrene reference
- Fig. 2 : The foam board extrusion line used within the project of the IKV
- Fig. 3 : ProFoam system for introducing the blowing agent into the cellulose acetate
- Fig. 4 : Foam board densities of the CA compounds investigated in foam extrusion
- Fig. 5 : Exemplary foam samples after the flammability test : if the measuring mark is not reached, the test is passed. The sample on the right did not pass the test
- Fig. 6 : Measured process pressures in foam injection molding
- Fig. 7 : Foam structure of th einjection-molded components : the microscopic images show different homogeneity in cell size and cell distribution depending on the blowing agent and compound formulationEn ligne : https://drive.google.com/file/d/1gCSZicOJ1-1a-WJW4Udxs5dc4oVSXLor/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31820
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Code-barres Cote Support Localisation Section Disponibilité 20616 - Périodique Bibliothèque principale Documentaires Disponible Foamed and still extruded in one step / Christina Hoffmann in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)
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Titre : Foamed and still extruded in one step : Method for the simultaneous extrusion of window profiles with a foam core Type de document : texte imprimé Auteurs : Christina Hoffmann, Auteur ; Johannes Rudloff, Auteur ; Christian Eck, Auteur ; Eduard Kraus, Auteur ; Thomas Hochrein, Auteur ; Hermann Achenbach, Auteur ; Marieluise Lang, Auteur ; Martin Bastian, Auteur Année de publication : 2020 Article en page(s) : p. 18-21 Langues : Anglais (eng) Catégories : Chlorure de polyvinyle
Durée de vie (Ingénierie)
Micrographie
Microscopie électronique à balayage
Mousses plastiques -- Extrusion
Polymères expansés
PolystyrèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : Foamed polystyrene in window profiles and façade elements can improve their thermal insulation and there-fore their environmental efficiency. Simultaneous extrusion of polyvinyl chloride profiles with a PS foam core is challenging due to the different processing conditions and has not been performed before. A trial plant for researching this process has now been set up at the SKZ. Note de contenu : - One-step process for foam-filled profiles
- Homogeneous and fine-celled foam structure
- Processing in a tandem extrusion line
- Problems with the die
- Welding of foam-filled profiles
- How sustainable is the process ?
- Environmental life-cycle analysis
- Fig. 1 : The foaming of PS was investigated in a test system developed for this purpose
- Fig. 2 : SEM micrograph of a foam sample with graphite as nucleation agent with 150x magnification : the closed-cell, highly homogeneous and fine-celled structure of the foams is good to see
- Fig. 3 : The tandem extrusion system permits extrusion of PVC profiles with foamed PS core
- Fig. 4 : Front view of the extrusion die with frame radiator : the mold combines PVC profile extrusion with PS foam extrusion
- Fig. 5 : Simulated pressure and viscosity profiles for the PVC flow channel of the die and the PS flow channel
- Fig. 6 : Specific energy consumption of the individual components based on 1m of manufac-tured profileEn ligne : https://drive.google.com/file/d/139XZRUzHOndv0RWD3fX4RqNFTkf5o67M/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34822
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Code-barres Cote Support Localisation Section Disponibilité 22367 - Périodique Bibliothèque principale Documentaires Disponible From fishing net to particle foam / Hans Axel Kristensen in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 9 (2020)
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Titre : From fishing net to particle foam : expanded polypropylene from maritime plastic waste Type de document : texte imprimé Auteurs : Hans Axel Kristensen, Auteur ; Jens Grunwald, Auteur ; Helge Lüsebrink, Auteur Année de publication : 2020 Article en page(s) : p. 14-17 Langues : Anglais (eng) Catégories : Filets de pêche -- Recyclage
Matières plastiques -- Recyclage
Polymères expansés
Polypropylène
Recyclage mécaniqueIndex. décimale : 668.4 Plastiques, vinyles Résumé : A large part of the plastic waste in the sea comes from the maritime industry. The Danish company Plastix recycles old fishing nets and ropes. The granules produced are used by JSP International, among others, to manufacture expanded polypropylene (EPP). This results in a 7 % reduction in CO2 emissions compared to virgin material. In order to obtain the same properties as virgin material, the recyclates must meet strict requirements. This requires a precise analysis of the waste in the recycling process and strict quality control. Note de contenu : - Extended producer responsibility
- Recycling of fishing nets
- Figure : 11 % of the plastic waste in the sea comes from the maritime industry. For the recycling of old fishing nets and ropes, accurate sorting is very important
- Fig. 1 : Over 900 different types of nets and ropes are stored in the Plastix database. The “Wall of Fame” of the company shows an extract
- Fig. 2 : Mechanical recycling turns the maritime waste back into high-quality plastic granulate
- Fig. 3 : Before delivery, the recyclates are analyzed and subjected to quality control
- Fig. 4 : Feasibility study for the Urban Arrow Shorty cargo bicycle : the transport container was made entirely from Arpro 35 Ocean particle foamEn ligne : https://drive.google.com/file/d/1LqK15MQee3DINx_7YUrTqHti7TL7Q8_I/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34821
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Code-barres Cote Support Localisation Section Disponibilité 22367 - Périodique Bibliothèque principale Documentaires Disponible Manufacturing of composite panels from date palm leaflet and expanded polystyrene wastes using hot compression moulding process / Ahlem Malti in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 33, N° 3 (06/2023)
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Titre : Manufacturing of composite panels from date palm leaflet and expanded polystyrene wastes using hot compression moulding process Type de document : texte imprimé Auteurs : Ahlem Malti, Auteur ; Tahar Masri, Auteur ; Mohamed Yagoub, Auteur ; Islam Mohammed Mahbubul, Auteur ; Aida Ghazali, Auteur ; Adel Benchabane, Auteur Année de publication : 2023 Article en page(s) : 153-164 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres -- Moulage sous pression à chaud
Composites à fibres végétales
Composites à fibres végétales -- Propriétés mécaniques
Déchets végétaux -- Recyclage
Palmier dattier et constituants
Panneaux de fibres
Polymères expansés
PolystyrèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : This study focuses on the reduction of the environmental impact of plastic waste and the valorisation of vegetal wastes produced annually from date palms. This paper presents an experimental study on the manufacturing of composite panels based on date palm leaflets, DPL, and expanded polystyrene wastes were carried out. Hot compression process was proposed with the aim of improving the composite manufacturing techniques previously released by the team using a cold compression process. Three composites were studied with the weight fraction (wt.%) of 70, 75 and 80 of the DPL as a reinforcement. The weight fraction of expanded polystyrene is respectively 30, 25 and 20 wt.%. Physical and mechanical characterizations of biocomposites were performed with the reinforcement size between 0.315 mm and 0.5 mm. The result shows that the composite panels have a low density between 414 and 511 kg/m3. The composite panels showed an improved maximum stress and flexural modulus that can reach 6.18 MPa and 13.5 MPa respectively. These values are comparable to the literature values such as Medium Density Fibreboard (MDF) (13.5-25 MPa) and the Durian Peel and Coconut Coir (DPCC) particleboards (0.8-22.4 MPa), (0.7-43 MPa). However, the water absorption result ranging from 77 to 95 % shows that the studied composite panels are sensitive to moisture and exhibit high moisture uptake percentage thus limits their possibility of use in moist condition. Note de contenu : - INTRODUCTION : Biocomposites based on date palm fibres - Manufacturing process of date palm biocomposites
- MATERIALS AND METHODS : Materials - Composites characterizations
- RESULTS AND DISCUSSION : Density measurements - Flexural bending result - Water absorption result - Comparison to other published works
- Table 1 : Various tested samples
- Table 2 : Manufacturing process and conditions
- Table 3 : Mechanical and physical properties of DPL expanded polystyrene composites with comparable biocomposites from the literatureDOI : https://doi.org/10.18280/rcma.330303 En ligne : https://www.iieta.org/download/file/fid/103800 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40024
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Code-barres Cote Support Localisation Section Disponibilité 24247 - Périodique Bibliothèque principale Documentaires Disponible Microstructural, functional groups and textural analysis of expanded polyethylene reinforced polystyrene composites with recycled aluminium as ternary component / Sulyman A. Abdulkareem in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 2 (2022)
PermalinkPreparation and properties of thermally expandable microspheres for foam coating / Guodong Huang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 7 (07/2021)
PermalinkThe influence of wastes materials on the rheology of rendering mortars / L. A. Pereira de Oliveira in APPLIED RHEOLOGY, Vol. 23, N° 1 (2013)
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