Backmolding formed glass / Marius Felder in KUNSTSTOFFE INTERNATIONAL, Vol. 106, N° 1 (01-02/2016)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 106, N° 1 (01-02/2016) . - p. 11-14 Titre : Backmolding formed glass : The plastic-glass composite is reaching completion with the integration of capacitive sensors Type de document : texte imprimé Auteurs : Marius Felder, Auteur Année de publication : 2016 Article en page(s) : p. 11-14 Langues : Anglais (eng) Catégories : Adhésion Capteurs (technologie) Composants électriques et électroniques Composites -- Moulage par injection Electronique -- Matériaux Polyamide 6 Verre Index. décimale : 668.4 Plastiques, vinyles Résumé : Electronics integration - Injection molding - The Kunststoff-Institut Lüdenscheid is currently focusing its development work on combining glass and plastics in an injection molding process. It is forming functional assemblies of flat and shaped glass with plastic. In the last step, researchers are attempting to injection mold the plastic melt between a glass pane and capacitive film, with the aim of generating a functional touchpad in one shot. Note de contenu : - Interlocking and integral bonds between glass and plastic - Testing the assembly - Forming of the glass surfaces En ligne : https://drive.google.com/file/d/1Ut2_nEaqCJjvMSC8lPi39tFkUImPrSYT/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25582 [article]

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Experimental investigation on mechanical and thermo-mechanical properties of alumina filled polypropylene composites using injection molding process / Deepak Kumar in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 3 (07/2017)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 3 (07/2017) . - p. 316-325 Titre : Experimental investigation on mechanical and thermo-mechanical properties of alumina filled polypropylene composites using injection molding process Type de document : texte imprimé Auteurs : Deepak Kumar, Auteur ; G. S. Dangayach, Auteur ; P. N. Rao, Auteur Année de publication : 2017 Article en page(s) : p. 316-325 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alumine Charges (matériaux) Composites -- Moulage par injection Composites -- Propriétés mécaniques Composites -- Propriétés thermomécaniques Composites thermoplastiques Polypropylène Index. décimale : 668.4 Plastiques, vinyles Résumé : In the present study, Polypropylene composites were fabricated by varying different weight percentages (0 to 20%) of alumina powder by using Injection Molding Technique. Then the fabricated composites were characterized by physical characterization such as void content test, chemical characterization such as Fourier-transform infrared spectroscopy, mechanical characterization such as Shore hardness test, flexural test, compressive strength, Izod impact test, thermo-mechanical characterizations such as Dynamic Mechanical Analysis, Thermo-gravimetric analysis and morphological characterizations such as Scanning Electron Microscopy (SEM) and Atomic force Microscopy (AFM). The results indicate that the shore hardness values increase up to 25% with the increase in alumina filler up to 20%. The highest flexural strength and flexural modulus achieved are 59.26 MPa and 2126 MPa respectively with 20% filler loading. Further, it was also revealed that the storage modulus of the composites was found to be higher than that of the virgin PP because filler increases the stiffness of the composites. Thermo-gravimetric analysis (TGA) measurements indicate that both the initial degradation temperature and end degradation temperature increase with increasing filler content. SEM exhibits that alumina particles were uniformly and finely dispersed though some aggregates and agglomerates are identifiable. AFM results indicate that morphology of alumina in the PP matrix is characterized by a chainlike branched structure. Note de contenu : - EXPERIMENTAL : Selection of raw materials - Preparation of composite using plastics injection molding technique - Characterization of the samples - RESULTS AND DISCUSSION : FTIR spectra of alumina filled polypropylene composites - Effect of void content on alumina filled polyprpylene composites - Effect of shore hardness on alumina filled polypropylene composites - Effect of impact strength on alumina filled polypropylene composites - Effect of flexural properties on alumina filled polypropylene composites - Effect of compressive strength on alumina filled polypropylene composites - Dynamic mechanical analysis - Thermo-gravimetric analysis (TGA) - Scanning electron microscopy - Atomic force microscopy (AFM) DOI : 10.3139/217.3323 En ligne : https://drive.google.com/file/d/1Cp0fErLrNIF8T2Mh7x3QEcNsQ5bNKwmA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28833 [article]

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Joining of contact pins and conductive compounds via injection molding - Influence of the flow situation on the electrical contact resistance / Hans-Peter Heim in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 2 (05/2020)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXV, N° 2 (05/2020) . - p. 184-192 Titre : Joining of contact pins and conductive compounds via injection molding - Influence of the flow situation on the electrical contact resistance Type de document : texte imprimé Auteurs : Hans-Peter Heim, Auteur ; F. Mieth, Auteur ; André Schlink, Auteur ; K. Wiegel, Auteur ; L. Brabetz, Auteur Année de publication : 2020 Article en page(s) : p. 184-192 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Assemblages (technologie) Assemblages multimatériaux Broches métalliques Composites -- Moulage par injection Composites -- Propriétés électriques Conduction électrique Cuivre Graphite Insert (technologie) En plasturgie ou fonderie, un insert désigne une pièce d'un matériau infusible incluse dans la pièce fabriquée. Cet élément sert en général à la fixation ultérieure d'éléments mécaniques ou sert de renfort (exemple : chemise d'usure). Mesures électriques Polypropylène Résistance de contact électrique Index. décimale : 668.4 Plastiques, vinyles Résumé : While a lot of research can be found in the field of bulk resistance of carbon filled polymers, comparatively few papers focus on contact resistance between compound and metal contacts. Due to that small number of researches that deal with contact resistances, studies of the influence of injection molding conditions and parameters on the contact resistance are also very rare. In contradiction to that, these influences on bulk resistance have been studied. The objective of this work was to investigate the electrical contact resistance of overmolded tinplated copper contacts after modifying flow situations and molding conditions by procedural and constructional methods in contact areas. Metal pins were overmolded with a polypropylene compound containing 45 vol.% graphite, utilising an insert injection molding process. To affect the flow situation at the contacts, several processing parameters, such as mold temperature and injection speed, were modified. In addition, the contact alignment related to melt flow direction was varied. Electrical properties were studied and related to macroscopic and microscopic connection properties and flow situations in contact regions. It was found that the contact resistance is a significant factor while examining electrical resistances of overmolded samples. Furthermore, it was shown that the various flow situations had an essential impact on contact resistances. Weld lines at the position of the contact caused a decreased contact resistance. The correlation of the weld line effect, the filler orientation and contact resistance were successfully investigated by μ-CT. Regarding processing parameters, it was observed that a high mold temperature of 120 °C increased not only bulk conductivity, but also had a positive impact on contact conductivity. Macroscopic and microscopic connection mechanisms of contact surfaces were interpreted and connected to the experimental observations. Note de contenu : - Current status or research - Materials - Sample preparation - Electrical measurements - Results - Discussion : Macroscopic contact - Microscopic reproduction - Filler position within the interface - Connection of the filler particles close to the interfaces DOI : https://doi.org/10.3139/217.3879 En ligne : https://drive.google.com/file/d/19UY3Adlb4rpmXgeE9uXv5yEEUWG8Xsgf/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34012 [article]

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Plastic and metal - an inseparable team / Erwin Bürkle in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 12 (12/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 12 (12/2017) . - p. 15-19 Titre : Plastic and metal - an inseparable team : Innovative injection molding technologies for hybrid lightweight applications Type de document : texte imprimé Auteurs : Erwin Bürkle, Auteur ; Maik Gude, Auteur ; Michael Krahl, Auteur ; Michael Stegelmann, Auteur Année de publication : 2017 Article en page(s) : p. 15-19 Langues : Anglais (eng) Catégories : Assemblages collés Assemblages multimatériaux Composites -- Moulage par injection Matériaux -- Allègement Matériaux hybrides Index. décimale : 668.4 Plastiques, vinyles Résumé : The imminent paradigm shift in mobility makes it essential that the German automotive industry prepares itself to undergo a transformation, both now and in the future, the like of which has not been seen before. Resource-efficient lightweight system engineering in a multi-material design is a key differentiating feature here. In this connection, novel materials, highly automated, digitized manufacturing processes as well as functional integration for intelligent component structures and vehicle systems will form the basis for creating springboard innovations that will dominate the competition. Note de contenu : - Plastic + Metal= Lightweight design ? - Hybrid structures require special plant technology - Smart mold and automation solutions - Bonding polymer and metal properly - FIGURES : 1. Sheet metal, fiber composite structures and LFT ribs are combined in a single process to yield complex three-dimensional hybrid parts - 2. System complex incl. bolt-on unit from KraussMaffei for manufacturing the battery tunnel of the Leika floorpan - 3. Section of the FDC unit with fiber cutting and feed at the front part of the injection unit - 4. The individual components in CAD and the finished FuPro component - 5. Microtexture on the metal surface (shown in fals colors) to improve the adhesion of a metal-fiber composite - 6. Application of a plasma polymer layer to sheet metal by the "Plasma-SealTight" nozzle - 7. ILK hybrid test specimens for analyzing the strength of the connections between different materials for different types of load En ligne : https://drive.google.com/file/d/1Q60DlKrR1UnVNiJ71gJRL1jg-KHvPqJ-/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29674 [article]

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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 Cellulose La 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 Halloysite L'halloysite-7Ã… 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 Thermocinétique Index. 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 properties Note 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 nanocomposites Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36938

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Structure, injection molding process and fracture behavior of composite plastics / X.-P. Zhou in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 1 (03/2012)  

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