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Cooling prediction for semi-finished products / Patrick Weiss in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 8 (08/2013)
[article]
Titre : Cooling prediction for semi-finished products Type de document : texte imprimé Auteurs : Patrick Weiss, Auteur ; Martin Spitz, Auteur ; Gregor Hiesgen, Auteur ; Kenny Saul, Auteur Année de publication : 2013 Article en page(s) : p. 73-76 Langues : Anglais (eng) Catégories : Matières plastiques -- Extrusion
Matières plastiques -- Refroidissement
Simulation par ordinateur
TubesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Simulation - When producing pipe, the cooling process has a decisive effect on the quality and production costs of the semi-finished product. How much potential for optimization is available is shown by cooling simulation software that replicates the cooling stage in a virtual model. Using the recommended settings reduces internal stress and eliminates the need for subsequent tempering. Note de contenu : - From the extruder outlet to custom finishing
- Internal stresses determine the quality
- Checking theoretical values in actual practice
- Less internal stress, lower operating costsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22947
in KUNSTSTOFFE INTERNATIONAL > Vol. 103, N° 8 (08/2013) . - p. 73-76[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15395 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Crosslinked but still recycled : Closed loop for PE-X pipes Type de document : texte imprimé Auteurs : Andreas Frank, Auteur ; Stephan Roest, Auteur ; Robin Bresser, Auteur Année de publication : 2023 Article en page(s) : p. 59-61 Langues : Anglais (eng) Catégories : Cables électriques
Matières plastiques -- Recyclage
Polyéthylène
Recyclage chimique
TubesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Crosslinked plastics offer excellent properties. However, as they can no longer be melted, conventional mechanical recycling is out of the question for them. A consortium of companies has now succeeded in chemically recycling PE-X pipe waste and then reusing it for these pipes. Note de contenu : - Chemical instead of mechanical recycling
- ISCC plus certification is an important building block
- Cooperation project successfully recycles PE-X pipes
- Fig. 1 : PE-X is very suitable for insulating low-voltage electrical cables and increases flexibility during their installation
- Fig. 2 : Production of PE-X pipes at Uponor: Pipes made of this material are highly temperature-resistant and thus ensure a high level of operational reliability
- Fig. 3 : Mass balancing according to the chain-of-custody principle: This approach enables the mathematical attribution of organic and recycled content to productsEn ligne : https://drive.google.com/file/d/1BR7cRYFNPLEc60uNUWHaarDJBag_LQh5/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39900
in KUNSTSTOFFE INTERNATIONAL > Vol. 113, N° 5 (2023) . - p. 59-61[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24150 - Périodique Bibliothèque principale Documentaires Disponible Development of a technical approach to modify the internal surface of biomedical tubes and other elongated small lumen macrodevices with parylene coating / Chintan Desai in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)
[article]
Titre : Development of a technical approach to modify the internal surface of biomedical tubes and other elongated small lumen macrodevices with parylene coating Type de document : texte imprimé Auteurs : Chintan Desai, Auteur ; Norbert Laube, Auteur Année de publication : 2019 Article en page(s) : p. 103-111 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Coefficient de friction
Dépôt chimique en phase vapeur
Diffusion (physique)
Gaz
Matériel médical
ParylèneLe parylène est un film polymère biocompatible qui se dépose sous vide après évaporation et transformation de son précurseur. Cet article passe en revue la structure du motif du polymère qui constitue le parylène et qui explique comment son procédé de mise en œuvre unique est possible. Les propriétés de conformité et d'uniformité, d'isolation électrique et de barrière chimique, découlant de sa structure et de son procédé de mise en œuvre sont présentées. Ses propriétés optiques et de surface sont aussi exposées ainsi que les différents types de parylène. En effet, en modifiant le motif du polymère de parylène, les propriétés macroscopiques du revêtement s'en trouveront changées.
Polymères en médecine
Résistance à l'usure
Revêtements intérieurs
TubesIndex. décimale : 667.9 Revêtements et enduits Résumé : A multitude of differently composed biomedical polymers has been researched for many years for their distinctive ease of production and wide range of applications. New technologies and new material characteristics have always evolved accordingly. The lumina of biomedical polymer tubes such as catheters, intravenous tubes, and biomedical microfluidic channels do not necessarily show the required biocompatibility and desired functionality. In such cases, the products are provided with additional inner liner or coatings to achieve the desired specific properties. Specific adjustments, for example, low friction coefficient, low gas diffusion resistance, wear resistance, and hydrophobicity, are key properties which are in focus for the improvement of biomedical surfaces. In this pilot study, a technical method was developed to deposit parylene-AF4 on the inner surface of silicone tubes with aspect ratios exceeding 78:1. Uncoated and parylene-AF4-coated silicone tubes were investigated in respect to the aforementioned physical properties. Compared to the uncoated tubes, the parylene-coated tubes showed superior quality with respect to friction coefficient, gas diffusivity as well as wear resistance. It could be demonstrated that the new technical approach is suitable to parylene-coat the inner surfaces of tubes with high aspect ratios thereby achieving conformal coatings. Note de contenu : - MATERIALS AND METHODS : Experimental setup - Water contact angle measurements - EDX analysis - Determination of friction properties - Determination of diffusion properties - Determination of wear resistance
- RESULTS : Water contact angle measurements - EDX analysis - Friction properties - Determination of diffusion properties - Wear resistanceDOI : 10.1007/s11998-018-0104-1 En ligne : https://link.springer.com/article/10.1007/s11998-018-0104-1 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31969
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 1 (01/2019) . - p. 103-111[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20659 - Périodique Bibliothèque principale Documentaires Disponible Effect of basalt intraply fiber hybridization on the compression behavior of filament wound composite pipes / Ö. Özbek in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 2 (2021)
[article]
Titre : Effect of basalt intraply fiber hybridization on the compression behavior of filament wound composite pipes Type de document : texte imprimé Auteurs : Ö. Özbek, Auteur ; Ö. Y. Bozkurt, Auteur ; A. Erklig, Auteur Année de publication : 2021 Article en page(s) : p. 193-204 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres de carbone -- Propriétés mécaniques
Composites à fibres de verre -- Propriétés mécaniques
Contraintes (mécanique)
Epoxydes
Fibres de basalte
Résistance à la compression
TubesIndex. décimale : 668.4 Plastiques, vinyles Résumé : The current study deals with the effect of basalt fiber hybridization on the compressive properties of composite pipes reinforced with glass fiber and carbon fiber. Hybrid and non-hybrid fiber reinforced pipes (FRPs) were fabricated through wet filament winding technique. Intraply fiber winding structure in which different fiber types were simultaneously wound at the layer was employed for the hybridization. The FRP samples wound by different fiber winding angles (± (40°), ± (55°), ± (70°)) were prepared in order to gain a better insight on the influence of basalt intraply fiber hybridization. The compression properties of FRP samples were experimentally determined by quasi-static compression tests using external parallel-plates for both the axial and radial directions. The non-hybrid carbon FRP pipes showed the maximum axial compression strength in parallel to the highest strength and lowest ductility of carbon fibers, while the minimum axial compression strength was obtained for the non-hybrid pipes reinforced with basalt fibers that, in comparison, exhibit much less strength and higher ductility. The pipes submitted to the axial compression tests predominantly failed due to the development of cracks and buckling along the fiber direction. While the inclusion of basalt fiber reduced the axial compression behavior of the non-hybrid carbon and glass FRP samples, it improved that behavior in the radial compression tests. Delamination was determined as the major failure mode for the damaged FRPs under radial compression. It is found that the incorporation of basalt fiber provides improvements in radial compression properties as opposed to axial compression properties and in the same manner the increment in fiber winding angle makes a positive contribution to radial compression properties. Note de contenu : - MATERIALS AND METHODS : Materials - Fabrication of composite pipes - Quasi-static axial and radial compression
- RESULTS AND DISCUSSIONS : Compression strength - Pipe stiffness
- Table 1 : The mechanical and physical properties of the raw materials
- Table 2 : Naming and thickness of FW composite pipes
- Table 3 : The parameters of the radial compression testDOI : https://doi.org/10.1515/ipp-2020-4005 En ligne : https://drive.google.com/file/d/1oiNVpI0FjCg5pJ1wsyBippVaxrjiYLEo/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36363
in INTERNATIONAL POLYMER PROCESSING > Vol. 36, N° 2 (2021) . - p. 193-204[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23732 - Périodique Bibliothèque principale Documentaires Disponible Effect of the mandrel rotation speed and inner wall cooling Rate on the performance and structure of polypropylene block-copolymer pipe / R. Han in INTERNATIONAL POLYMER PROCESSING, Vol. XXVIII, N° 5 (11/2013)
[article]
Titre : Effect of the mandrel rotation speed and inner wall cooling Rate on the performance and structure of polypropylene block-copolymer pipe Type de document : texte imprimé Auteurs : R. Han, Auteur ; M. Nie, Auteur ; S.-B. Bai, Auteur ; Q. Wang, Auteur Année de publication : 2013 Article en page(s) : p. 496-505 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymères séquencés
Matières plastiques -- Extrusion
Matières plastiques -- Propriétés mécaniques
Mouvement rotatoire
Polypropylène
TubesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Polypropylene block-copolymer (PP-B) pipes were prepared using a self-designed rotational extrusion processing system. The experimental results showed that though the crystal morphology in the prepared PP-B pipes did not change compared to conventional extrusion, the molecular chains in amorphous region apparently deviated from the axial direction. As a result, in comparison with the conventional extrusion pipes, the mechanical properties in hoop direction and the resistance to crack growth of rotation extrusion PP-B pipes were greatly improved. Furthermore, both the two mechanical properties improved monotonously with increasing mandrel rotation speed and inner wall cooling rate. DOI : 10.3139/217.2761 En ligne : https://drive.google.com/file/d/1yZG4O8sqa8HgUJ1z4PuX3wGPBhKoOPIP/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19896
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVIII, N° 5 (11/2013) . - p. 496-505[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15682 - Périodique Bibliothèque principale Documentaires Disponible Electrofusion welding process optimization using a coupled numerical and experimental approach / Y. Tillier in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 5 (11/2015)
PermalinkEnergy-efficient production “just in time” / Oliver Te Heesen in KUNSTSTOFFE INTERNATIONAL, Vol. 102, N° 10 (10/2012)
PermalinkÉtude expérimentale du délaminage en mode I des tubes fabriqués par enroulement filamentaire / Fares Mohammed Laid Rekbi in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 25, N° 3-4 (2e semestre 2015)
PermalinkEtude des propriétés mécaniques à travers la paroi d'un tube HDPE-80 extrudé destiné à la distribution du gaz naturel / L. Alimi in MATERIAUX & TECHNIQUES, Vol. 100, N° 1 (2012)
PermalinkL'extrusion réactive au service du PE réticulé / J. M. Flamein in CAOUTCHOUCS & PLASTIQUES, N° 806 (09/2002)
PermalinkExtrusion de tubes : des techniques abouties / Pauline Léna in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 869 (09/2009)
PermalinkFilament winding of twisted glass bundles for drainage pipe filters and aerators / Kryzhanovsky Ilya in JEC COMPOSITES MAGAZINE, N° 79 (03/2013)
PermalinkFluid elasticity in plastic pipe extrusion : loads on die barrel / C. Saengow in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 5 (11/2017)
PermalinkFluid-powered projectile-assisted injection molding : principles and developments / T.-Q. Kuang in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 1 (03/2020)
PermalinkPermalinkFrom cold to hot / Ralph Kettl in KUNSTSTOFFE INTERNATIONAL, Vol. 100, N° 11 (11/2010)
PermalinkPermalinkFusion bond epoxy for protection of metal pipes / Debi Prasad Mishra in PAINTINDIA, Vol. LXVII, N° 9 (09/2017)
PermalinkHigh hoop strenght for composite profiles using pull-winding in TECHNICAL TEXTILES, Vol. 66, N° 4 (2023)
PermalinkImpact quasi statique des tubes en PVC / Christian Bopda Fokam in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 24, N° 3 (07-08-09/2014)
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