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Advanced diaphragm forming process for high temperature thermoplastic composite applications / Christian Hopmann in SAMPE JOURNAL, Vol. 48, N° 2 (03-04/2012)
[article]
Titre : Advanced diaphragm forming process for high temperature thermoplastic composite applications Type de document : texte imprimé Auteurs : Christian Hopmann, Auteur ; W. Michaeli, Auteur ; R. Schöldgen, Auteur Année de publication : 2012 Article en page(s) : p. 24-29 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites à fibres
Composites thermoplastiques
Hautes températures
Matériaux -- Imprégnation
Polysulfures de phénylène
Renforts textilesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Continuous fiber reinforced plastics with a thermoplastic matrix are recyclable, weldable and suitable for many structural applications. Due to the short cycle times of about 1 minute, forming processes for thermoplastic composite parts are already capable of series productions.
Two of the most important forming technique are matched die forming and diaphragm forming. The matched die forming provides short cycle times and high processing temperatures but requires complex and expensive molds. The diaphragm forming process enables the use of low cost tooling and machinery and provides a high degree of flexibility. On the other hand its processing temperature range is limited to 250°C due to the silicone diaphragms, which are used for cost-efficient series production. The paper presents a new processing technique that was developed at IKV Aachen and combines the advantages of both processes. These particularly are a big variety of processable matrices and low cost equipment with a high degree of flexibility. The developed machinery like the new handling system, the innovative IR-heating station and the modified forming technique are described in detail. The development focuses on a temporal reduction of the thermal load of the diaphragms by using them only for the forming process. As a result, the processing temperature range has been extended from 250°C to 320°C so that it is now possible to additionally process PA6, PA66 and PPS based prepregs.Note de contenu : - Project goals
- EXPERIMENTATION : Material - Development of the new processing techniques - Process option 1 : Depositing the prepreg
- RESULTS : Quality of the reproduction of the mold geometry - Mechanical properties of the molded parts - Material processable with the advanced processesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13605
in SAMPE JOURNAL > Vol. 48, N° 2 (03-04/2012) . - p. 24-29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13702 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Alternatives to PA66 : Coolant circuit in vehicles Type de document : texte imprimé Auteurs : Laurent Hulpiau, Auteur ; Andreas Weinmann, Auteur Année de publication : 2022 Article en page(s) : p. 58-59 Langues : Anglais (eng) Catégories : Automobiles -- Moteurs -- Pièces
Circuits de refroidissement
Matières plastiques dans les automobiles
Polyphthalamide
Polysulfures de phénylèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : Until now, polyamide 66 was the main material used for coolant applications in automobiles. Due to increasing requirements, however, alternative materials such as PPS and PPA are becoming increasingly interesting for components. This is illustrated by the example of a coolant distribution pipe for Audi and VW vehicles. Note de contenu : - Which PPA should it be ?
- 1.5 million components made of PA9T
- Fig. 1 : Since the two-piece coolant distribution pipe was to be joined by rotation welding, PPS was out of the question as a material
- Fig. 2 : Material benchmark measured with ISO A1 test bars in 50 % coolant and 50 % water: the PPA and PPS materials investigated have significantly higher long-term stability than the otherwise common PA66
- Fig. 3 : The coolant distribution pipe made of PA9T is now used by Audi as well as VW, Skoda and Seat
- Table 1 : Overview of the polymer types investigatedEn ligne : https://drive.google.com/file/d/1adPks8e74bd8nJ-jDyM4qkA5EKMW7t4m/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37211
in KUNSTSTOFFE INTERNATIONAL > Vol. 112, N° 1 (2022) . - p. 58-59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23221 - Périodique Bibliothèque principale Documentaires Disponible An aeronautics and space-oriented research group / Bruno Castanié in JEC COMPOSITES MAGAZINE, N° 122 (07/2018)
[article]
Titre : An aeronautics and space-oriented research group Type de document : texte imprimé Auteurs : Bruno Castanié, Auteur Année de publication : 2018 Article en page(s) : p. 41-47 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Assemblages multimatériaux
Avions -- Matériaux
Bois
Composites -- Analyse
Composites -- Défauts
Composites -- Propriétés mécaniques
Composites à fibres -- Moulage par injection
Composites à fibres courtes
Composites à fibres de carbone
Construction sandwich
Epoxydes
Essais (technologie)
Essais dynamiques
Modélisation tridimensionnelle
Polyéther éther cétone
Polysulfures de phénylène
Simulation par ordinateur
Thermocinétique
TitaneIndex. décimale : 668.4 Plastiques, vinyles Résumé : The Clément Ader Institute's (ICA) Composite Materials and Structures research group (UMR CNRS 5312) was set up in 2010 after the Institute was created by decree in July 2009. The group conducts transversal research on materials, processes and strcutures, with a strong focus on numerical and experimental aspects. Note de contenu : - MATERIALS AND PROCESSES : Study and modelling of resin flow in fibrous reinforcements - Multiphysics analysis and functionalization of composite materials
- PROCESSES AND STRUCTURES : Understanding and modelling variability sources in composite structures - Analysis and modelling of shape defects generated during the manufacture of composite structures - Analysing the links between manufacturing/machining parameters and mechanical strength - Composites machining
- STRUCTURES AND MODELLING STRATEGIES : Short fibre injection - Modelling strategies - Wood-based eco-structures
- Fig. 1 : The Roctool process
- Fig. 2 : Simulation of resin flow in a 3D reinforcement at different scales
- Fig. 3 : Modelling thermal conductivity in a doped composite material
- Fig. 4 Example of ply thickness spatial evolution
- Fig. 5 : A350 rib spring-back computation
- Fig. 6 : Hole roughness analysis to define drilling quality indicators
- Fig. 7 : Chip formation analysis during CFRP/Ti multi-material drilling (simulation)
- Fig. 8 : Simulation of short fibre injection in a complex part (aircraft fitting)
- Fig. 9 : DPM modelling
- Fig. 10 : Semi-continuous modelling for frontal impact of rotor blades
- Fig. 11 : Analysis of wood-based structures
- Fig. 12 : The Vertex test rig
- Fig. 13 : Edge ring crack torsion test (ERCT)
- Fig. 14 : STIMPACT platform gas guns
- EXPERIMENTAL METHODS AND MEANS : Complex loading - Measuring methods and specific tests - Dynamic testingEn ligne : https://drive.google.com/file/d/1ZE2BbFr85BY2Wh5vhaXeLfGDN9apmWta/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31621
in JEC COMPOSITES MAGAZINE > N° 122 (07/2018) . - p. 41-47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20053 - Périodique Bibliothèque principale Documentaires Disponible Beyond the limits of the comparative tracking index / Wim Denissen in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 1 (01/2020)
[article]
Titre : Beyond the limits of the comparative tracking index : Testing isolating materials above 600V Type de document : texte imprimé Auteurs : Wim Denissen, Auteur ; Shimon Kanai, Auteur ; Naoto Sugai, Auteur ; Andreas Weinmann, Auteur Année de publication : 2020 Article en page(s) : p. 47-49 Langues : Anglais (eng) Catégories : Composites à fibres de verre
Essais dynamiques
Isolants électriques
Matières plastiques dans les automobiles
Polyamide 9
Polymères (isolants électriques)
Polyphthalamide
Polysulfures de phénylène
Résistance au fluage
Véhicules électriquesIndex. décimale : 668.4 Plastiques, vinyles Résumé : The voltage test of the comparative tracking index is limited to 600 V so far. In many areas the voltages increase, especially for electrical vehicles. Therefore, it is interesting to know what the real limits of isolating materials are. These are considerably higher. To test these, a modified test set-up is necessary.
Note de contenu : - Standard measurement setup prevents tests
- High CTI thanks to glass fibers
- CTI measured according to IEC 60112
- Fig. 1 : The creepage distance, i.e. the shortest distance between two conductive parts along the surface is usually longer than the air gap, the shortest distance between two conductive parts
- Fig. 2 : At over 600V, the measurement setupprovided by the standard causes a short circuit through the air. For this reason, the electrodes were turned by 180° for the tests
- Table 1 : Different PLC-classes according to the failure voltage
- Table 2 : Overview of the Genestar types tested : three of them show no tracking even at 750VEn ligne : https://drive.google.com/file/d/16hOXKcNUAGTSvSYpGJtby1OByQvh8E_y/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33840
in KUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 1 (01/2020) . - p. 47-49[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21510 - Périodique Bibliothèque principale Documentaires Disponible Carrier dyeing of polyphenylene sulphide fabric with disperse dye in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)
[article]
Titre : Carrier dyeing of polyphenylene sulphide fabric with disperse dye Type de document : texte imprimé Année de publication : 2013 Article en page(s) : p. 39-48 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Benzoate de benzyle
Calorimétrie
Colorants
Diffractométrie de rayons X
Dispersions et suspensions
Polysulfures de phénylène
Structure cristalline (solide)
Teinture -- Fibres textiles synthétiques
Transition vitreuseIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Polyphenylene sulphide is considered to be a high-performance thermoplastic material and has been used in many areas over the past few decades. But the application of polyphenylene sulphide fabric used for protective clothing is limited because of difficulties in its dyeing and printing. In this work, carrier dyeing of polyphenylene sulphide fabric with disperse dye is discussed, and the effect of the structure of the carrier, dyeing temperature, dyeing time, usage of carrier and usage of dye on colour strength of the dyed sample and the percentage of dye exhaustion were investigated. In addition, the glass transition temperature, crystalline structure and orientation degree of treated polyphenylene sulphide fibre with benzyl benzoate were measured by differential scanning calorimetry, X-ray diffraction analysis and velocity-oriented tester, respectively. The results indicated that benzyl benzoate could increase the percentages of dye exhaustion and colour strength values, while at the same time reduce the glass transition temperature and orientation degree of the treated polyphenylene sulphide fibre. Thus, it would be beneficial to the diffusion of the dye molecules into the amorphous region of the fibre. Furthermore, the decrease of tensile strength and limiting oxygen index of the dyed polyphenylene sulphide sample was very little, and the colour fastness and levelness of the dyed polyphenylene sulphide samples were also satisfactory. Note de contenu : - EXPERIMENTAL : Materials - Dyeing - Measurements of colour strength and levelness of the dye samples - Measurements of dye exhaustion - Thermal analysis - X-ray diffraction analysis - Measurements of degree of orientation - Measurement of tensile strength and fastness
- RESULTS AND DISCUSSION : Effect of the different carriers on the K/S value of the dyed sample - Effect of the dyeing conditions on the dyeability of PPS fabric - Effect of the carrier on the thermal property of PPS - Effect of the carrier on the structure of PPS fibre - Effect of the dyeing process on the dyed fabricDOI : 10.1111/cote.12000 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12000/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17185
in COLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 39-48[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14552 - Périodique Bibliothèque principale Documentaires Disponible CFRT composites move into overhead power transmission / Michael Ruby in JEC COMPOSITES MAGAZINE, N° 94 (01-02/2015)
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PermalinkEffect of poly(phenylene sulfide) (PPS) as functional additive on the physical properties of poly(phenylene ether) (PPS)/PPS blends / D. K. Kim in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 3 (07/2020)
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PermalinkEvaluation of thermal contact resistance of molten resin–mold interface during high-thermal-conductivity polyphenylene sulfide filling in injection molding / Akifumi Kurita in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 2 (2024)
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