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Numbers that count / Josef Giessauf in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 28-32 Titre : Numbers that count : with its iQ weight monitor, engel shifts process monitoring one step up Type de document : texte imprimé Auteurs : Josef Giessauf, Auteur ; Christian Maier, Auteur ; Paul Kapeller, Auteur ; Georg Pillwein, Auteur ; Georg Steinbichler, Auteur Année de publication : 2017 Article en page(s) : p. 28-32 Langues : Anglais (eng) Catégories : Logiciels Matières plastiques -- Moulage par injection Procédés de fabrication Index. décimale : 668.4 Plastiques, vinyles Résumé : Cyclically measured process parameters are used for monitoring and optimizing injection molding processes. In the past, attention was focused on axis movements and the associated necessary forces and times. Now, the software package iQ weight monitor goes a large step further. It generates process parameters that are relevant for component quality: injected volume, melt viscosity variation, and pressure deviations during injection. Note de contenu : - Focus on filling procedure - Classics under scrutiny - Process parameters with significance - Reduced outlay, large benefits - Process monitoring with control possibilities - FIGURES : 1. In spite of their limited significance, melt cushion and flow number were frequently used in the past for process monitoring - 2. Changes of injection volume, viscosity, and the pressure curve can influence component quality. In the worst case, as shown here, various interference factors occur together. For better understanding, very large deviations from the reference curve have been selected here - 3. the respective actual process parameters are shown clearly on the display of the machine control system. The traffic light colors indicate which values are within or outside the tolerance range - TABLES : 1. Intentional manipulations of the process and their influence on component weitght and also on the two process parameters melt cushion and flow number. The colors indicate the significance of the process parameters. Green : The process parameters has changed in the expected direction. Red : The process parameter has changed contrary to the expectation - 2. Intentionally introduced process changes and their influences on component weight : The process parameters injection volume and viscosity change in the respective expected directions. The changes of injection volume are greater than for component weight, as the sprue was not taken into account in the latter - 3. The iQ weight monitor provideshighly significant process parameters En ligne : https://drive.google.com/file/d/149hRD4HTZS3LPrs3CwmZdpOTSJ-XPWpm/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29099 [article]

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Why must the process control make corrections on restart ? / Stefan Kruppa in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 33-34 Titre : Why must the process control make corrections on restart ? : Part 3 of the series "More stability in injection molding with APC plus" Type de document : texte imprimé Auteurs : Stefan Kruppa, Auteur Année de publication : 2017 Article en page(s) : p. 33-34 Langues : Anglais (eng) Catégories : Commande de processus Matières plastiques -- Moulage par injection Procédés de fabrication Index. décimale : 668.4 Plastiques, vinyles Résumé : In injection molding, repeated interruptions are a familiar problem. The aim is rapid restart without rejects and production loss. This challenge is met by the APC plus machine function from KraussMaffei. Note de contenu : - Fig 1. Without APC plus, significantfluctuations in the part quality can be seen after a material exchange and restart (top). With ACP plus (bottom) these fluctuations can be noticeably compensated. The side view of the part can be seen at the top right hand side of the picture - Fig. 2. On manual start-up(left), the changeover point is reduced to a low level and returned to the target value in five shots. On start-up with APC plus activated (right), the changeover point is only reduced as far as necessary ; the number of defective parts is reduced from 5 to 1 En ligne : https://drive.google.com/file/d/12NxbRVl5h_f3YwrYYGvqi-pOgzjcuRNe/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29103 [article]

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Today’s vision of the future / Vaculik, Robert in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 35-38 Titre : Today’s vision of the future : Mold sensor technology as the basis for networked injection molding production Type de document : texte imprimé Auteurs : Vaculik, Robert, Auteur Année de publication : 2017 Article en page(s) : p. 35-38 Langues : Anglais (eng) Catégories : Capteurs (technologie) Industrie 4.0 Le concept d’Industrie 4.0 correspond à une nouvelle façon d’organiser les moyens de production : l’objectif est la mise en place d’usines dites "intelligentes" ("smart factories") capables d’une plus grande adaptabilité dans la production et d’une allocation plus efficace des ressources, ouvrant ainsi la voie à une nouvelle révolution industrielle. Ses bases technologiques sont l'Internet des objets et les systèmes cyber-physiques. Matières plastiques -- Moulage par injection -- Appareils et matériel Moules d'injection Index. décimale : 668.4 Plastiques, vinyles Résumé : Industry 4.0 is an omnipresent topic in every sector. The Industry 4.0 vision has already emerged as a distinct reality in the injection molding sector. The focus is on consistent digitization, leading to enhanced product quality and increased cost-efficiency. Injection molders are equipped with Kistler systems for process monitoring and control in order to meet the requirements for digital networking. Note de contenu : - Cavity pressure as a quality indicator - When processes move - Process efficiency for rotor production - The bridge between the processing and commande level - Case study:machine intelligence and network interact - Error prevention instead of exploding costs in the automotive industry - Unambigous traceability - FIGURES : 1. The process monitoring and control system ComoNeo maximizes efficiency for injection molding - 2. Online quality prediction: via high-end process monitoring ComoNeo directly predicts the component characteristics and evaluates quality on the basic of pre-set tolerance values - 3. If the current cycle deviates from the reference cycle, recommended charges in machine parametre are automatically displayed on the Restart Assistant until the cavity pressure deviations are reduced to a tolerable level En ligne : https://drive.google.com/file/d/17gTBf8X0dmi987pHv2xhNbpE1qyqWbHn/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29104 [article]

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Economical alternative to high-performance polymer / Bettina Keck in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 39-41 Titre : Economical alternative to high-performance polymer : Ros reduces costs and part weight with fiber direct compounding Type de document : texte imprimé Auteurs : Bettina Keck, Auteur Année de publication : 2017 Article en page(s) : p. 39-41 Langues : Anglais (eng) Catégories : Composites à fibres -- Moulage par injection Composites à fibres de verre Composites à fibres longues Coût -- Contrôle Matériaux -- Allègement Polypropylène Index. décimale : 668.4 Plastiques, vinyles Résumé : Highly strong and resilient at reduced manufacturing costs and up to one-third lower weight in comparison to the expensive high-performance plastic PBT : good reasons for Ros to turn to fiber direct compounding from Arburg. The company uses this process to manufacture cable drive housings for power-window car doors from PP with 30 % long glass fibers. Expensive pre-compounded granulate mixtures can be dispensed with. Note de contenu : - Users support the development of FDC to series maturity - 11.2 mm cutting length - Up to 30 percent weight reductions - FIGURES : 1. The glass fibers are fed to the process via side feeder on the machine (Allrounder 630 S) and chopped into the PP melt - 2. The fiber-reinforced light parts are produced in a 4-cavity mold with a pneumatic needle-type shutt-off system from the Ros's own mold-making shop - 3. Ros CEO Steffen Tetzlaff plans to produce 2.5 million cable drive housings per year by the FDC process En ligne : https://drive.google.com/file/d/1d4_VFN5TMxjTmd_ZamjGv8szXVqx09-6/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29105 [article]

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Homogeneity is the key / Schadhauser, Maximilian in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 42-45 Titre : Homogeneity is the key : How the mixing of fibers and melt can be assessed objectively Type de document : texte imprimé Auteurs : Schadhauser, Maximilian, Auteur ; Martin, Judith, Auteur ; Wuertele, Martin, Auteur ; Peter Karlinger, Auteur ; Niels Modler, Auteur Année de publication : 2017 Article en page(s) : p. 42-45 Langues : Anglais (eng) Catégories : Composites à fibres -- Moulage par injection Composites à fibres de verre Composites à fibres de verre -- Propriétés mécaniques Composites à fibres longues Homogénéisation (technologie) Index. décimale : 668.4 Plastiques, vinyles Résumé : In order to achieve optimal component properties with the use of fiber-reinforced plastics, both the fiber length and the homogeneity of the fiber distribution are decisive criteria. As the fibers tend to form clusters as the length increases, injection molding solutions are required which also ensure homogeneous distribution in such cases. Note de contenu : - Agglomerates-Why must they be avoided ? - Measurement of homogeneity - Fiber agglomerates reflected in the mechanical property patterns - FIGURES : 1. a) Raw materials for the production of fiber-reinforced injection molded parts. b) Undispersed fiber agglomerates in the component are caused by unsuitable systems technology - 2. Micrograph through a fiber agglomerate in a glass-fiber-reinforced specimen - 3. With this mesurement setup the transmitted light images of the specimens positioned between orthogonally twisted polarization fibers are made - 4. By binarization (converting dark and light image components into black and white elements) agglomerate areas can be evaluated - 5. Homogeneity and mechanical property patterns of long-fiber-reinforced plastic components with the use of different mixing zone type, with regard to the values of the natural mixing zone. It becomes clear that the reduction of the agglomerate proportion leads to significant improvement of tensile strength and the modulus of elasticity by means of shearing mixing geometry En ligne : https://drive.google.com/file/d/1mwPuNGPx9m6RgQXt53vRD5JuqIP5TN9H/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29106 [article]

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The new process for lightweight foaming / Szych, Pawel in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 46-50 Titre : The new process for lightweight foaming : Granulate is impregnated with COâ‚‚ in an autoclave and processed on standard injection molding machines Type de document : texte imprimé Auteurs : Szych, Pawel, Auteur ; Kürten, Andreas, Auteur Année de publication : 2017 Article en page(s) : p. 46-50 Langues : Anglais (eng) Catégories : Autoclave (technologie) Matériaux -- Allègement Moussage (chimie) Mousses plastiques -- Moulage par injection Index. décimale : 668.4 Plastiques, vinyles Résumé : The e-mobility trend is driving increased efforts in lightweight construction. Now the Kunststoff-Institut Lüdenscheid and Linde AG have developed a new physical foaming process that does not require costly retrofitting or conversion of the injection molding machine. This flexibility makes the process equally attractive for small batches and large production lots. Appealing component surfaces can be designed in combination with the gas counter-pressure process. Note de contenu : - Improved dimensional accuracy through foaming - Chemical vs. physical foaming - A simple new physical foaming process - Improving the component surface with gas counter-pressure - FIGURES : 1. Sequence of the new foaming process : in contrast to other phycal foaming processes, the granulate is impregnated with the blowing agent prior to treatment in the machine - 2. Weight increase of 100g plastic, respectively with two different impregnating times ; the pressure increase has a clear effect - 3. Continuous weight measurement on foamed components made of various plastics. Each point corresponds to a component; reproducible use of the impregnated granulate is confirmed over several hours - 4. Gas supply for material impregnation. Multiple injection molding machines can be supplied by one autoclave - 5. When gas bubbles come to the surface, this causes streaks to form (top). The gas counter-pressure process (bottom) prevents gas bubbles from bursting at the melt front - 6. The pressure control module (Linde) has to respond quickly and keep the counter-pressure constant to the end of the flow path by relasing gas as the malt flows in - TABLE : Degree of foaming achieved for different plastic materials fluctuates between nearly 10% to a maximum (PC) of 60% En ligne : https://drive.google.com/file/d/1XIId984Y-Rbfp5eRALBsHlXvCkGvViBZ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29108 [article]

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Systematic approach pays off / Volker, Gogoll in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 51-54 Titre : Systematic approach pays off : Market leader Brita uses a simulation program from simcon to aid its development activities Type de document : texte imprimé Auteurs : Volker, Gogoll, Auteur Année de publication : 2017 Article en page(s) : p. 51-54 Langues : Anglais (eng) Catégories : Composites à fibres -- Moulage par injection Filtres Logiciels Matières plastiques -- Moulage par injection Matières plastiques -- Soudage Simulation par ordinateur Index. décimale : 668.4 Plastiques, vinyles Résumé : "Objectives are more readily attained by managing and steering activities and associated employees as a process." This is a statement taken from the management manual of the company Brita. The premium manufacturer of products for optimizing drinking water deploys the versatile Varimos software program from Simcon to aid with its engineering and process optimization activities. Note de contenu : - Enhanced engineering possibilities in the second generation - Holistic project approach - Computer-aided process optimization - All parteners around the table - Practical implementation up to the bursting test - Blueprint for further development projects - FIGURES : 1. The Purity C pressure-operated filter series is designed for removing hardness from water in large companies - 2. The welding process requires that the part be circular. In the absence of balanced filling, unfavorable fiber orientation leads to ovality (before optimization and optimization) fixes this problem - 3. Sensor points are defined to assess balancing during filling of the cartridge cap. The flow front must reach all sensors at the same time - 4. Optimization of wall thickness in gate region allows the flow front to be selectively influenced, and ensures balanced filling - 5. Initial and optimized part geometry : in the optimized part geometry, local wall thickenings visible in the region of the cartridge cap sprue serve as flow aids En ligne : https://drive.google.com/file/d/10JUhpKMStEutesNki-E7m-WRtfHYcqZ8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29109 [article]

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Tiny, but nasty / Simone Fischer in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 55-57 Titre : Tiny, but nasty : Removing polymer dust can lower scrap rates Type de document : texte imprimé Auteurs : Simone Fischer, Auteur Année de publication : 2017 Article en page(s) : p. 55-57 Langues : Anglais (eng) Catégories : Dépoussiérage Granulés plastiques Matières plastiques -- Défauts Polyméthacrylate de méthyle Le poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec. Poussière de polymères Index. décimale : 668.4 Plastiques, vinyles Résumé : When looking through transparent parts, it is not uncommon to spot specks and points. Such particles can be removed by granulate dedusters that are used not only during granulate production, but also, as is becoming more common, for producing such sophisticated parts. Note de contenu : - Systematic cause research indicates the source of error - Innumerable particules impair part quality - Error source unequivocally identified - Consistent result opens new markets - FIGURES : 1. Before and after : specks caused by polymer dust in a transparent surface and speack-free part surface after the deduster was placed in operation - 2. Microscopic images ; close-up of several dust particules and section of the particule filter with cut dust on it - 3. Result of particule scan of PMMA granulate dust - 4. TS5 sifter module used in production at neo-plastic for dedusting PMMA granulate En ligne : https://drive.google.com/file/d/1ey8YyP4apZnwM1Mru4OOS9aQXvax27nw/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29121 [article]

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Dry ice shower for complex components / Christiane Rach in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 58-59 Titre : Dry ice shower for complex components : Fully automated cleaning of scooping components before painting Type de document : texte imprimé Auteurs : Christiane Rach, Auteur Année de publication : 2017 Article en page(s) : p. 58-59 Langues : Anglais (eng) Catégories : Glace sèche Pièces usinées -- Nettoyage Surfaces -- Nettoyage Index. décimale : 668.4 Plastiques, vinyles Résumé : Coating companies, who paint interior and exterior parts made of plastic for the automotive industry, have to meet high quality and efficiency requirements. To equip a paint line for surface treatment with a fully automated dry ice blasting unit, including a robot and dry ice granulate production, can increase the profitability. Note de contenu : - Space-saving integration into the painting line - Dry ice production as required - FIGURES : 1. Dry ice : the extruded strands are cut into granules and crushed into 1 to 1.5mm ice particules in the nozzle of the blasting applicator before compressed air accelerated them to supersonic velocity - 2. Demand-driven dry ice production : the supply and pelletizer unit of the dry ice blasting system is placed in the area of the paint supply and thus allows a continuous blasting process - 3. Easy dry ice cleaning : the robot, with was unsed only for flaming till now, was additionally equipped with a CO2 supply and a blasting applicator - 4. Automatic selection of the part-specific cleaning program : because the Combi 120H is integrated into the painting line, the shift manager only needs to enter component type and color En ligne : https://drive.google.com/file/d/17nAvMt2cwU94IM7QJwmONtvFCM03uf9I/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29122 [article]

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Mastermind in the fiber placement head / Hofmann, Reni in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 60-65 Titre : Mastermind in the fiber placement head : Additive manufacture of carbon-fiber-reinforced components using UV radiation Type de document : texte imprimé Auteurs : Hofmann, Reni, Auteur ; Pfitzer, Hanno, Auteur ; Jarlath McHugh, Auteur ; Joachim Starke, Auteur Année de publication : 2017 Article en page(s) : p. 60-65 Langues : Anglais (eng) Catégories : Automobiles -- Matériaux Automobiles -- Pièces Composites à fibres de carbone Impression tridimensionnelle Lampes à rayonnement ultraviolet Placement automatisé de fibres Polymérisation Stratifiés Structures multicouches Index. décimale : 668.4 Plastiques, vinyles Résumé : The manufacture of carbon-fiber-reinforced plastic components for automotive serial production must be fast and cost-competitive. The ideal solution would be a one-stage process. In a potential study, a selective fiber placement unit was tested that combines fiber placement, resin injection, and curing in a single process step – with placement rates of up to 1 m/s. Note de contenu : - Production concept with selective fiber placement unit - Generic approach - Characteristic results of the potential phase - Lamp technique - Selection of a suitable material system - Process and production parameters - FIGURES : 1. Comparaison between the CFRP manufacturing processes of resin transfer molding (RTM)and selective fiber placement: from the roving directly to the component - 2. Test chain from the static process over the dynamic process to the pilot-scale additive manufacture - 3. Comparison between the wave-lengths emitted by mercury vapor and UV-LED lamps - 4. Material requirements and selection system to meet the necessary process criteria - 5. Static test installation for the production of single laminate layers using UV curing - 6. Graphic representation of the different pure resin and laminate for placement speeds of 1m/s, 0.31m/s and 0.06m/s. The middle graph shows the degree of conversion as a function of exposure time and glass transition temperature. The target states for the placed laminated layers and final CFRP laminate are indicated in yellow - 7. Light micrographs of a UV-cured individual laminated layer, a multi-layer laminate (b-stage/b-stage) and a multi-layer laminate (b-stage/full cure). The sample were produced without a press En ligne : https://drive.google.com/file/d/1QZPURWkyTT7syIgyzh68PemFfflx4Rvs/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29123 [article]

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Solving the mystery of kinking / Kremser, Thomas in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 66-69 Titre : Solving the mystery of kinking : Test methods for characterizing the flexural behavior of plastic hoses Type de document : texte imprimé Auteurs : Kremser, Thomas, Auteur ; Gläss, Liesa, Auteur ; Stefan Roth, Auteur ; Schubert, Dirk W., Auteur Année de publication : 2017 Article en page(s) : p. 66-69 Langues : Anglais (eng) Catégories : Essais de résilience Essais dynamiques Flexion (mécanique) Matériel médical Matières plastiques -- Propriétés mécaniques Maxwell, Modèle de Le modèle de Maxwell décrit un matériau viscoélastique, c'est-à-dire ayant à la fois des propriétés élastiques et visqueuses. Ce modèle fut proposé par James Clerk Maxwell1 en 1867. Relaxation des contraintes Tubes Index. décimale : 668.4 Plastiques, vinyles Résumé : The flexibility of infusion lines is a key product feature for their application. However, adverse pressure may cause kinking that can interfere with treatment safety. New test methods characterize the kinking behavior of hoses, and are able to predict the behavior over several days within hours. Note de contenu : - Kinking radius of infusion lines - Characterizing the resilience of the hoses - Mechanical stress relaxation and Maxwell modeling - Correlation between stress relaxation and kinking behavior - FIGURES : 1. The kinking radius is determined using a U-shaped piece of hose that is brought together at a constant speed in a holder - 2. The kinking radii of the material types at 23°C and 40°C show that PVC-P hoses exhibit a smaller and therefore better kinking radius than TPEs - 3. Principle for determining the resilience capacity. A kink occurs due to the local collapse of the wall caused by pressure or bending the hose - 4. Typical curve progression for the recovery of the hose using PVC-P as an example with a linling time of 2 day at 23°C - 5. Comparison of the extrapolation to 30 days for the recovery capacity from a forced kink at 23°C and 40°C - 6. Principle of mechanical stress relaxation test using the TSSR method - 7. Schematic approach for developing a regression model - TABLE : Parameters for the correlation of the Maxwell model En ligne : https://drive.google.com/file/d/1qHgLh7r3_6Ywzn3ltnbItoIObrX_Pn8r/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29131 [article]

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New plastic housing material for e-power units under the hood / Wallmeier, Udo in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 9 (09/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 9 (09/2017) . - p. 70-72 Titre : New plastic housing material for e-power units under the hood : PBT blend developed for battery system components in mass-produced electric vehicles Type de document : texte imprimé Auteurs : Wallmeier, Udo, Auteur ; Marbach, Marc, Auteur Année de publication : 2017 Article en page(s) : p. 70-72 Langues : Anglais (eng) Catégories : Automobiles -- Moteurs -- Pièces Batteries électriques Dureté (matériaux) Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Matières plastiques -- Propriétés chimiques Matières plastiques dans les automobiles Polybutylène téréphtalate Terpolymère acrylonitrile styrène acrylate Véhicules électriques Index. décimale : 668.4 Plastiques, vinyles Résumé : A low-warpage, flame-retardant PBT-ASA material has been developed for the housings of a battery management unit and two cell monitoring units. Both assemblies have recently been used in the lithium-ion battery systems of a small compact car. The material has low warpage and is flame-retardant. It also offers high chemical resistance, low emissions, and high toughness and stiffness. Note de contenu : - Battery management functions - Compact, flat, integrated and fire-resistant-certified - Low emissions and resistant to battery electrolytes - Two and a half years to use in full-scale production - FIGURES : 1. The PBT-ASA housing for the battery management unit is very flat compact. The component's function is to control the high-voltage current sensor and insulation monitoring unit in batteries for electric and hybrid vahicles - 2. In the housing of the cell monitoring unit, functions are integrated ( such as contact pins), which is why its geometry is very complex, especially along the edges. The material must have low warpage and even shrinkage - 3. Relative tensile stress at break of Pocan AF4130 901510 after storage in battery electrolyte vapor (BASF Selectilyte LP71) at room temperature. Initial value 100% En ligne : https://drive.google.com/file/d/1cKPul7Egl4ktDf179RMP3jzTcVeekzmo/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29132 [article]

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19135	-	Périodique	Bibliothèque principale	Documentaires	Disponible