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Strong in medicine and sanitary applications / Michael Berger in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 6-10 Titre : Strong in medicine and sanitary applications : Polyethylene (PE) Type de document : texte imprimé Auteurs : Michael Berger, Auteur ; Peter Bisson, Auteur ; Volker Lackner, Auteur ; Bernd Marczinke, Auteur ; Patrik Schneider, Auteur Année de publication : 2020 Article en page(s) : p. 6-10 Langues : Anglais (eng) Catégories : Aliments -- Conservation Hygiène Matières plastiques -- Applications industrielles Matières plastiques -- Recyclage Polyéthylène Polymères en médecine Index. décimale : 668.4 Plastiques, vinyles Résumé : In recent years, society’s view of plastics has shifted. The actual material advantages have been overshadowed by the plastics waste debate. Uncommon times, such as the Covid-19 pandemic, remind society of the outstanding contribution of plastics materials. Polyethylene is particularly strong in medical and hygiene applications. Note de contenu : - Packaging made from renewable resources - Conflicting goals and preferences - Protection for sensitive glass fibers - Mechanical or chemical recycling ? - Figure : PE ensures costs and weight savings in medical technology. For containers, the material also facilitates sterilization - Fig. 1 : The importance of the shelf life of food products became more important again during the corona crisis. Plastics such as PE make an important contribution as packaging material and prevent food waste - Fig. 2 : For hygiene products such as tampons and bandages, pleasant and at the same time inconspicuous packaging is required. Due to the increasing mobility of many people, the demand for individually packaged product is also growing - Fig. 3 : PE is increasingly used for drinking water supply pipes. The plastic is particularly in demand in countries with a high proportion of chemicals used to kill germs in drinking water - Fig. 4 : Due to the increasing demands on data rates and volumes, fiber optic networks are becoming more and more widespread. Microducts made of HDPE are suitable for protecting the sensitive fibers - Fig. 5 : Depending on the original application, both mechanical and chemical recycling of PE waste is possible En ligne : https://drive.google.com/file/d/1Kx6BGtAAA77PL5K9zYD2XgDtphK2SDRG/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34630 [article]

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Sustainable growth / Norbert Niessner in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 11-16 Titre : Sustainable growth : Acrylonitrile-Butadiene-Styrene (ABS) Type de document : texte imprimé Auteurs : Norbert Niessner, Auteur ; Eike Jahnke, Auteur Année de publication : 2020 Article en page(s) : p. 11-16 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 Études de marché Matières plastiques -- Applications industrielles Matières plastiques -- Recyclage Polymères -- Détérioration Polystyrène Production Terpolymère acrylonitrile butadiène styrène Index. décimale : 668.4 Plastiques, vinyles Résumé : Because of its good temperature resistance, impact resistance and aesthetics appearance, acrylonitrile-butadiene-styrene is often used in household goods and in the automotive industry. The development of a circular economy also shows successes. More and more ABS materials used in a range of applications are containing a contribution of recyclates. Note de contenu : - Even large E&E components can be produced - Mechanical recycling remains the best choice - Joint recycling projects - Depolymerization removes HBCD - Figure : More than half of the world's ABS consumption is accounted for by household and E&E equipment - Fig. 1 : ABS capacity by region (as of July 2020) : Asia is by fare the largest producer - Fig. 2 : Supply and demand for ABS develop very evenly - Fig. 3 : Mechanical recycling is currently the best way to reuse ABS - Fig. 4 : Various chemical recycling processes for PS are currently in the industrial test phase - Fig. 5 : PS fromchemically recycled PS waste is already tested in yoghurt cups from Theo Müller - Table 1 : While capacity in Europe and America is expected to increase only moderately, a signficant expansion is expected in Asia En ligne : https://drive.google.com/file/d/1Kd32LnYyk5xr2jOMzI8Q6Zi9duICjZ7r/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34631 [article]

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Present in a multitude of trends / Frank Schnieders in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 17-23 Titre : Present in a multitude of trends : Polycarbonate (PC) Type de document : texte imprimé Auteurs : Frank Schnieders, Auteur ; Jochen Hardt, Auteur ; Dirk Wurster, Auteur ; Dirk W. Pophusen, Auteur ; Maximilian Hemgesberg, Auteur ; Florian Stempfle, Auteur Année de publication : 2020 Article en page(s) : p. 17-23 Langues : Anglais (eng) Catégories : Bioplastiques Composites à fibres de verre Emballages en matières plastiques Matériaux -- Allègement Matières plastiques -- Applications industrielles Matières plastiques dans les automobiles Polycarbonates Polymères en chirurgie Polymères en médecine Véhicules électriques Index. décimale : 668.4 Plastiques, vinyles Résumé : Lightweight construction, functionality and design are characteristic of material development in all areas of ‧application for PC compounds, composites and films. The range of materials has enormous opportunities when it comes to the mobility of the future, lightweight structural construction with continuous fiber-reinforced composites, 5G technology and medical technology. Note de contenu : - Bio-based raw materials for PC - New designs for vehicle interiors - Films for scratch-resistant surfaces - Combining design and functions - Well suited for 5G infrastructure - Good signal transmission - Figure : In electric vehicles, the original function of the radiator grille, namely to supply air to the engine, is no longer needed. It can therefore be used entirely as a design element, for example by integrating luminous logos and fade-out-effects - Fig. 1 : The aim of the new lightweight design concept for the seat backs is to reduce the weight of the ENO. 146 concept vehicle. Compared to previously used backrests, the development from PC is up to 50% lighter - Fig. 2 : The car interior of the future will feature a variety of operating, service and infotainment displays as well as integrated ambient lighting systems - Fig. 3 : The cylindrical cells can be bonded in just 5s in the carrier made of a PC+ABS blend - Fig. 4 : The "Bird" concept for a 5G antenna housing based on PC should not only enable technology to function flawlessly, but also blend in well with the cityscape - Fig. 5 : Fiberglass-filled PC grades are particularly suitable for medical components that must be very rigid and strong, such as handles for laparoscopic surgical instruments - Fig. 6 : The packaging of breast implants as well as other types of implants must protect them fromdamage and contamination, PC films provide the necessary toughness and stiffnes En ligne : https://drive.google.com/file/d/1KBcOBAzoIWYdLluXaQ7Y8_L0GQ80_iV8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34632 [article]

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Diverse shapes and applications / Norbert Niessner in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 24-28 Titre : Diverse shapes and applications : Styrenic polymers Type de document : texte imprimé Auteurs : Norbert Niessner, Auteur ; Peter Weinkötz, Auteur ; Marcela Villegas, Auteur Année de publication : 2020 Article en page(s) : p. 24-28 Langues : Anglais (eng) Catégories : Bioplastiques Caoutchouc styrène-butadiène Copolymère styrène-acrylonitrile Copolymères styréniques Matières plastiques -- Applications industrielles Matières plastiques dans les automobiles Résistance au chocs Résistance chimique Terpolymère acrylonitrile styrène acrylate Index. décimale : 668.4 Plastiques, vinyles Résumé : Styrenics can be polymerized using different technologies and it can be modified with a range of copolymers. The resulting plastics offer a wide range of properties allowing to customize them for different applications. ‧Because of this range of properties they are suitable for many industries. Strong demand is for example driven by the automotive industry, healthcare and the packaging industry. Note de contenu : - New process for transparent blends - Growing demand in medicine - Packaging made of bio-based SBC - Attractive aesthetics - Good impact and chemical resistance - Figure : Styrene copolymers are frequently used in the exterior of vehicles. The chinese manufacturer Lixiang, for example, uses an ASA for the radiator frill of its electric vehicles - Fig. 1 : The composite material StyLight has a low weight and high rigidity and is easy to process. Since it can be used to create attractive surfaces, automotive manufacturers use it in vehicle interiors - Fig. 2 : Styrenics are very well suited for medical equipment due to their mechanical strength and stiffness, their chemical resistance and the possibility of transparency - Fig. 3 : Stretch hoods protect goods on pallets during transport. The mey must therefore be made of polymers that ensure high elasticity and impact resistance - Fig. 4 : ASA-based window front : styrene copolymers are most frequently used in the construction industry - Fig. 5 : The indonesian manufacturer Golden Dragon uses NAS for its drinking glasses En ligne : https://drive.google.com/file/d/1_5QOMfneiX5audlGmEazrLE0oXKAk3ie/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34633 [article]

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Delivering efficiency even in harsh environments / Beate Sauer in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 30-34 Titre : Delivering efficiency even in harsh environments : Polyetheretherketone (PEEK) Type de document : texte imprimé Auteurs : Beate Sauer, Auteur Année de publication : 2020 Article en page(s) : p. 30-34 Langues : Anglais (eng) Catégories : Implants orthopédiques Implants résorbables Matières plastiques -- Applications industrielles Matières plastiques -- Surmoulage Polyéther éther cétone Semiconducteurs Index. décimale : 668.4 Plastiques, vinyles Résumé : Across many industry sectors, the quest for enhanced performance of applications and cost-efficiencies is on. In addition to these traditional requirements, societal and environmental trends, such as the need to reduce carbon dioxide (CO2) emissions and maintaining a healthy and active ageing population, are important needs that must be addressed as well. Due to its high-performing properties polyetheretherketone thermoplastic polymer is being used more and more frequently in many products Note de contenu : - Hybrid overmolding technique - Reduced cooling time for semiconductors - Preventing particle contamination - Figure : PEEK can replace fluoropolymers in cryogenic applications. Advanced Engineering Valve uses PEEK fromVictrex for sealings in ball valves - Fig. 1 : Prototype of an aircraft cabin bracket : the part was produced via hybrid overmolding and has shown up to 50% weight savings compared to the original aluminum part - Fig. 2 : CMP rings are used in semiconductor manufacturing. Made from PEEK they can result in longer operating times - Fig. 3 : In semiconductor manufacturing, FOUP (Front Opening Unified Pod) prevent wafer from contamination. They benefit PEEK's high resistance to aggressive chemicals and high temperatures - Fig. 4 : PEEK polymer supports lower ionic contamination and prevention of haze formation on reticles - Fig. 5 : Impellers for vacuum cleaners manufactured from PEEK : they are able to cope with high speeds and due to PEEK's properties maintain their shape - Fig. 6 : Spiral lace closure solution for conveyor belts made from Zyex fibers from Victrex : the use of PEEK contributes for extended belt lifetime potential - Fig. 7 : Boxcar implants can be used to replace collapsed or damaged vertebral body located in the cervical spine. The hydroxyapatite (HA) component in the PEEK used enchances bone apposition En ligne : https://drive.google.com/file/d/1085h2JKunpXbnbKGhS4A8-qlyMnPbfUz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34634 [article]

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Sustainable growth / Reinhard Albers in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 35-39 Titre : Sustainable growth : Polyurethane (PU) Type de document : texte imprimé Auteurs : Reinhard Albers, Auteur ; Reinhard Albers, Auteur ; Lutz Brassat, Auteur ; Andreas Chrisochoou, Auteur ; Klaus Franken, Auteur ; Persefoni Hilken, Auteur ; Bert Klesczewski, Auteur ; Florian Hupka, Auteur ; Catherine Lövenich, Auteur Année de publication : 2020 Article en page(s) : p. 35-39 Langues : Anglais (eng) Catégories : Biomatériaux Composites à fibres végétales Dioxyde de carbone -- Recyclage Eoliennes -- Matériaux Isolation acoustique Isolation thermique Matelas Matières plastiques -- Applications industrielles Matières plastiques -- Recyclage Matières plastiques dans la construction Polyuréthanes Recyclage chimique Index. décimale : 668.4 Plastiques, vinyles Résumé : The central issue in all polyurethane applications is the conversion from the past linear economy into a ‧circular economy, and the use of sustainable raw materials in manufacturing. To do so, manufacturers are ‧taking measures such as using bio-based raw materials, chemical recycling, and CO2 as a synthesis component. Digitalization, electromobility, autonomous driving and the construction industry are also driving PU development. Note de contenu : - Digital business models - Chemical recycling projects - Using CO2 as raw material - Exchange of epoxy resin for PU in wind energy systems - Demolding cooling devices up to 20% faster - Figure : Insulation boards and metal composite elements are the primary applications for PU in the construction. Since buildings are responsible for 40% of global energy consumption, more efficient materials in this area can generate big savings, such as through improved - Fig. 1 : With the opening of thenew MDI plant, the Brunsbüttel is one of Europe's three largest production sites worldwide for thie PU preliminary product - Fig. 2 : Mattresses create a large amount of soft foam waste at the end of their service life. Because of this, many PU manufacturers are working for options for chemically recycling mattresses so they can be used again to manufacture PUF - Fig. 3 : Covestro has developed a material and production solution for efficiently producing wind energy rotor blades alongside industrial partners. This allows for longer, lighter weight rotor blades. They are already being produced commercially in China - Fig. 4 : The Baynat PU system from Covestro provides effective sound insulation in the PrivacyDome, an extendable dome. Noise production plays a vital role for electrical and autonomous driving vehicles - Fig. 5 : A PU from Covestro reinforced with kenaf fibers was used in the door panel of the "LQ" concept vehicle. As such, it is 30% lighter than the previous models En ligne : https://drive.google.com/file/d/1Fmd05ZxH70M7igdQmOkn3oGhI1duZf7H/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34635 [article]

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No chance for dust and contaminations / Andreas Schäfert in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 40-42 Titre : No chance for dust and contaminations : Surface modification of LSR components hinders adhesion of dirt Type de document : texte imprimé Auteurs : Andreas Schäfert, Auteur Année de publication : 2020 Article en page(s) : p. 40-42 Langues : Anglais (eng) Catégories : Anti-adhérence (matériaux) caouchouc de silicone liquide Elastomères -- Moulage par injection Impuretés Matériel optique Poussière Traîtements de surface Index. décimale : 668.4 Plastiques, vinyles Résumé : LSR optics offers a wide range of applications due to the optical brilliance, the possibility to produce undercut shapes not to mention the competitive pricing. The adhesive surface which is almost impossible to clean however makes the LSR parts vulnerable against contaminations. This characteristic however limits the possible ‧application fields. To overcome this limitation Wilhelm Weber has partnered with Fraunhofer IFAM in a recent research. Note de contenu : - Surface modification to allow new LSR applications - Optical quality is not affected - First successful application on LED circuit board - Additional advangtages of the VUV treatment - Outlook : cooperation partner requests - Figure : Half of the board was treated with VUV while the the other half has covered. Afterwards norm dust was applied onto the board uniformly and than knocked off (once) in upright position. The dust sticks to the untreated areas while falls of the treated areas - Fig. 1 : Surface modification is performed with 185 nm low-pressure mercury lamps - Fig. 2 : Influence of the treatment to the spectral transmission, measured through a 3 mm thick LSR disk. For wavelength > 450 nm no effect could be measured, while below 450 nm there is a slight decrease in transmission which is however not of any effect in most applications - Fig. 3 : View into the tool to produce the test boards for the modification - Fig. 4 : Details to compare the treated and untreated areas of the sample board after knocking off the dust En ligne : https://drive.google.com/file/d/1eO7JeGIdJQfLnn2mWbBRiqWf_acye3GC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34636 [article]

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Reactive extrusion of TPU / Aleksandra Buczko in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 43-45 Titre : Reactive extrusion of TPU : Production of thermoplastic polyurethanes with reduced carbon footprint Type de document : texte imprimé Auteurs : Aleksandra Buczko, Auteur ; Andrei Holzer, Auteur ; Simon Kemmerling, Auteur Année de publication : 2020 Article en page(s) : p. 43-45 Langues : Anglais (eng) Catégories : Extrusion réactive Formaldéhyde Formulation (Génie chimique) Matières plastiques -- Extrusion Polymères -- Synthèse Polyols Polyuréthanes Thermoplastiques -- Extrusion Index. décimale : 668.4 Plastiques, vinyles Résumé : The simple replacement of petroleum-based components with renewable alternatives in a well-established reactive extrusion process is a promising route to more environmentally friendly thermoplastic polyurethane elastomers (TPU). However, this requires a comprehensive understanding of the interactions between chemical reactions and material flow within an extruder, as well as a thorough understanding of the effects of heat and shear on polymerization and melt processing. Note de contenu : - Advantages of reactive extrusion - Novel polyol in classic TPU - From the REX concept to the pilot process - Use of sustainable polyols in the established REX process - Figure : Extruded strand from the continuous synthesis of a thermoplastic polyurethand, containing the new paraformaldehyde-based polyol - Fig. 1 : Thermoplastic polyurethand synthesized using the newly developed polyol based on paraformaldehyde core. The solvent cast foil has excellent transparency - Fig. 2 : Development steps within "Dream Polyols" : from the preliminary determination of the polyurethane formulation and the REX conditions to the implementation of newly developed components in the established processing approach - Fig. 3 : Determining the physical and chemical causes of the instabilities in reactive extrusion allows the dosing strategy and the processing wxindow to be adjusted, resulting in a well-controlled process - Fig. 4 : Molecular weight and dispersity of thermoplastic polyurethane produced by the REX process. The polymer performance is controlled by a simple adjustment of the material formulation En ligne : https://drive.google.com/file/d/1hqkeI-eieybWTmsT6QqYGCLpRAbvpo94/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34637 [article]

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The one that shears, splits, and folds material / François Loviat in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 8 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 8 (2020) . - p. 46-49 Titre : The one that shears, splits, and folds material : Gentle compounding with high mixing effect and good scalability in the co-kneader Type de document : texte imprimé Auteurs : François Loviat, Auteur ; Andreas Niklaus, Auteur ; Robert Hollosi, Auteur Année de publication : 2020 Article en page(s) : p. 46-49 Langues : Anglais (eng) Catégories : Granulés plastiques Malaxeurs et mélangeurs Matières plastiques -- Extrusion Index. décimale : 668.4 Plastiques, vinyles Résumé : The patent on the operating principle of the co-kneader was applied for three quarters of a century ago. Compared to other extruder technologies, it features a clearly higher mixing effect while it processes the raw materials gently. Current applications for its further development range from reactive, shear-sensitive plastics to the compounding of high-performance engineering plastics. Note de contenu : - Kneading flights : They make it work - From the idea to a wide range of applications - Figure : Looking into the process chamber of the current genration of Compeo type co-kneaders we see the position of the statonary kneading pins in the barrel that comb the kneading flights of the modular - Fig. 2 : Title figure and sketch from Heinz List's patent specification no. 247704 - Fig. 3 : In operation, the plastic mass is sheared in the shear gap between the kneading flights and kneading pins - Fig. 4 : Interaction between screw shaft rotation and reciprocation - Fig. 5 : Mixing effect of a four-flight screw element spread out in the plane and abstractly represented using the kneading pin paths that arise during one complete revolution of the screw shaft. The plastic mass is sheared, split, and refolded between the kneading pins and the kneader flights passing them in real operation - Fig. 6 : Technology comparison : degree of fulfillment of requirements for manufacturing semiconductive compounds for high-voltage cables, PVC compounds for medical technology and parts for the electrical industry, each in comparison with a competing compounding technology En ligne : https://drive.google.com/file/d/1BvRlL-E8ZgEq8hxL2W9POuVg4h_LOxqb/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34638 [article]

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