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CarboBreak - releasing alveolar fibrous carbon fiber fragments / Dominic Kehren in CHEMICAL FIBERS INTERNATIONAL, Vol. 72, N° 1 (03/2022)
[article]
Titre : CarboBreak - releasing alveolar fibrous carbon fiber fragments Type de document : texte imprimé Auteurs : Dominic Kehren, Auteur ; Sabine Plitzko, Auteur ; Daphne Bäger, Auteur ; Anna GroBe, Auteur ; Romy Naumann, Auteur ; Marcel Hofmann, Auteur ; Nuoping Klemm-Zhao, Auteur Année de publication : 2022 Article en page(s) : p. 31-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Contraintes (mécanique)
Eclatement (matériaux)
Essais dynamiques
Fibres de carbone -- Propriétés mécaniques
Fragmentation
Traction (mécanique)Index. décimale : 677.4 Textiles artificiels Résumé : Carbon fibers (CF) are exposed to high mechanical stress within the process chain starting from fiber treatment to textile and composite production up to recycling and reuse. Splinter fractures of the fibers can produce alveolar fragments which, according to the WHO criteria (length >5 pm, diameter <3 pm, length : diameter > 3 : 1), must be assumed to have an asbestos-like effect. So far, it has not been clarified which carbon fibers are proue to this splinter fracture behavior and in which concentration fragments are released.
The aim of the CarboBreak project (Funding ID : 03XP0197A) is to gain in-depth knowledge of the fracture behavior of carbon fibers and to investigate the release of respirable fragments under mechanical stress.Note de contenu : - Fig. 1 : Carbon fiber fragments created during tensile testing and shater fracture testing
- Fig. 2 : Close-up of the milling head and the clamped specimen and the dust produced after the milling test
- Fig. 3 : SEM evaluation of a filter sample from the workplace measurement in the Center for Textile Lightweight Engineering at the STFIEn ligne : https://drive.google.com/file/d/1vBUw-IIWQgNUqjkfDBzKKmLHMwYMYg4H/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37395
in CHEMICAL FIBERS INTERNATIONAL > Vol. 72, N° 1 (03/2022) . - p. 31-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23331 - Périodique Bibliothèque principale Documentaires Disponible Carbon fiber development : from polyethylene-based precursors to carbon fibers / Andreas de Palmenaer in CHEMICAL FIBERS INTERNATIONAL, (10/2018)
[article]
Titre : Carbon fiber development : from polyethylene-based precursors to carbon fibers Type de document : texte imprimé Auteurs : Andreas de Palmenaer, Auteur ; Gisa Wortberg, Auteur ; Tim Röding, Auteur ; Thomas Gries, Auteur ; Margareta Merke, Auteur ; Gunnar Seide, Auteur Année de publication : 2018 Article en page(s) : p. 39-40 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Coût de production
Densité
Elasticité
Fibres de carbone
Fibres de carbone -- Propriétés mécaniques
Polyacrylonitrile
Polyéthylène
Stabilité chimique
Stabilité thermique
ThermochimieIndex. décimale : 677.4 Textiles artificiels Résumé : Polyacrylonitrile-based (PAN) carbon fibers (CF) provide outstanding mechanical properties combined with a low-weight which makes CF highly interesting for the automotive industry. The high market price of CF of around 20 €/kg is a limiting factor that prohibits the use of CF in the mass market. Alternatives to produce more affordable CF (5-12 €/kg) have been investigated by the ITA. Note de contenu : - Fig. 1 : PAN and PE-based carbon fiber process chain
- Fig. 2 : Development of manufacturing costs for PE-based carbon fibers along the process chain
- Table 1 : Properties of PE-based precursors for thermo-chemaical stabilization
- Table 2 : Properties price of PE-based carbon fibers in comparison to requirements from the automotive industryEn ligne : https://drive.google.com/file/d/1cjmTB1b8LhG3icBlFZ9dq_geRISHnrx7/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31245
in CHEMICAL FIBERS INTERNATIONAL > (10/2018) . - p. 39-40[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20259 - Périodique Bibliothèque principale Documentaires Disponible Development of a pitch-based carbon fibre, a solution for wide-ranging needs / Masayuki Takada in JEC COMPOSITES MAGAZINE, N° 139 (03-04/2021)
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Titre : Development of a pitch-based carbon fibre, a solution for wide-ranging needs Type de document : texte imprimé Auteurs : Masayuki Takada, Auteur ; Stuart Godfrey, Auteur Année de publication : 2021 Article en page(s) : p. 62-63 Langues : Anglais (eng) Catégories : Essais dynamiques
Fibres de brai
Fibres de carbone
Fibres de carbone -- Propriétés mécaniques
Polyacrylonitrile
Rigidité (physique)
Thermocinétique
Traction (mécanique)Index. décimale : 668.4 Plastiques, vinyles Résumé : DIALEAD TM are mesophase pitch-based carbon fibres that offer the ultimate in high specific stiffness materials and have been proven for many applications. DIALEAD TM fibres have high mechanical properties, such as strength and stiffness, and unique physical properties, such as high thermal conductivity and excellent electrical conductivity. Note de contenu : - Mechanical properties
- Processing
- Follow-on article
- Fig. 1 : Relationship between tensile modulus and tensile strength for pitch-based and PAN-based carbon fibres
- Fig. 2 : Relationship between tensile modulus and thermal conductivity for pitch-based and PAN-based carbon fibres
- Fig. 3 : Tensile and thermal characteristics of pitch-based carbon fibre compared to other engineering materials
- Fig. 4 : Scanning electron micrographs of pitch-based carbon fibre
- Fig. 5 : Scanning electron micrographs of pan-based carbon fibre
- Table 1 : Actual stiffness and specific stiffness of DIALEAD TM fibres compared to other engineering a materialsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35581
in JEC COMPOSITES MAGAZINE > N° 139 (03-04/2021) . - p. 62-63[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22574 - Périodique Bibliothèque principale Documentaires Disponible New concepts for the stabilization of carbon fiber precursors under reduced pressure and in tailored atmosphere / Manuel M. Clauss in CHEMICAL FIBERS INTERNATIONAL, Vol. 69, N° 3 (09/2019)
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Titre : New concepts for the stabilization of carbon fiber precursors under reduced pressure and in tailored atmosphere Type de document : texte imprimé Auteurs : Manuel M. Clauss, Auteur ; Andreas Keller, Auteur ; Gunter Fauth, Auteur ; Erik Frank, Auteur ; Michael R. Buchmeiser, Auteur Année de publication : 2019 Article en page(s) : p. 164-165 Langues : Anglais (eng) Catégories : Fibres de carbone
Fibres de carbone -- Propriétés mécaniques
Procédés de fabrication
Stabilité chimiqueIndex. décimale : 677.4 Textiles artificiels Note de contenu : - Fig. 1 : Low pressure stabilization furnace c.Lab Carbon
- Fig. 2 : Tensile strength of carbon fi bers based on low pressure and conventionally stabilized PAN as a function of stabilization time
- Fig. 3 : Basic design and cross-section of the cLab carbon low-pressure stabilization furnace
- Fig. 4 : Graphical representation of the stabilization process, applied process temperatures, progress of reaction and the resulting time saving in contrast to a conventional process and setup
- Fig. 5 : Fiber density and oxygen content of conventionally and under low-pressure conditions stabilized PAN fi bers as a function of stabilization timeEn ligne : https://drive.google.com/file/d/1b0cjlrg3qAQf0RMpaz6CbA2AfmS5483X/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32913
in CHEMICAL FIBERS INTERNATIONAL > Vol. 69, N° 3 (09/2019) . - p. 164-165[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21141 - Périodique Bibliothèque principale Documentaires Disponible Profiled textile reinforcement for concrete applications / Paul Penzel in TECHNICAL TEXTILES, Vol. 67, N° 1 (2023)
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Titre : Profiled textile reinforcement for concrete applications Type de document : texte imprimé Auteurs : Paul Penzel, Auteur ; Lars Hahn, Auteur ; Anwar Abdkader, Auteur ; Chokri Cherif, Auteur Année de publication : 2024 Article en page(s) : p. 36-39 Note générale : Bibliogr. Langues : Multilingue (mul) Catégories : Construction -- Matériaux
Fibres de carbone -- Propriétés mécaniques
Matériaux cimentaires
Renforts textiles
Structure biaxiale
Tricot chaîneIndex. décimale : 677.4 Textiles artificiels Résumé : Building in a resource-saving way and still exploiting a high performance potential, is that even possible ? Composite optimized profiled textile reinforcements for concrete applications and the related manufacturing technology were developed at the ITM. On the basis of braiding and for-ming technology, a new generation of profiled reinforcement yarns was developed with the help of simulation-based investigations. Like ribbed steel reinforcements, these profiled yarns have a very high bond with the concrete matrix, but despite the profiling they almost fully exploit the performance potential of the carbon fibers in terms of tensile properties. In this way, the bond length required for complete force transmission between the textile reinforcement and the concrete can be reduced to just a few centimeters, and up to 80% of the component-dependent over-sizing of the textile reinforcement can be saved. The further development of the multiaxial warp knitting technology for the requirement-based and fiber-friendly processing of the profiled yarns into grid-like reinforcement structures enables the production of profiled textile reinforcement structures with the highest bond properties for use in carbon-reinforced concrete components with maximum material and resource efficiency. Note de contenu : - Innovative profiled reinforcement yarns
- Performance potential of the new profiled reinforcement yarns
- Development of the multiaxial warp knitting process
- Table : Representation of unprofiled and profiled reinforcement yarns (3200 tex)
- Fig. 1 : Tensile properties on the yarn and bond flow-slip relationship (in concrete) ofunprofiled and profiled reinforcement yarns
- Fig. 2 : Stick placement system
- Fig. 3 : Textile reinforcement structure made of profiled rovings and braiding yarnsEn ligne : https://drive.google.com/file/d/1ojWAvZrIIWQCEx5f0PKh9dwYrpKJMYPb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40697
in TECHNICAL TEXTILES > Vol. 67, N° 1 (2023) . - p. 36-39[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24511 - Périodique Bibliothèque principale Documentaires Disponible Using steam thermolysis to recycle carbon fibres from composite waste / Maxime Boulanghien in JEC COMPOSITES MAGAZINE, N° 100 (10/2015)
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