Accueil
Catégories
> Polyamide 12
Polyamide 12Voir aussi
|
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
A statistical study of surface roughness for polyamide 12 parts produced using selective laser sintering / Sean Petzold in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 2 (05/2020)
[article]
Titre : A statistical study of surface roughness for polyamide 12 parts produced using selective laser sintering Type de document : texte imprimé Auteurs : Sean Petzold, Auteur ; J. Klett, Auteur ; Tim A. Osswald, Auteur Année de publication : 2020 Article en page(s) : p. 126–138 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Frittage laser
Polyamide 12
Rugosité
StatistiqueIndex. décimale : 668.4 Plastiques, vinyles Résumé : Selective laser sintering (SLS) of thermoplastic powders allows for the creation of parts with complex geometries and functionally robust designs. Based on the principle of selectively fusing regions in a layer-by-layer process, SLS has gained increasing interest as an economical way to supplement small batch production for traditional manufacturing techniques. To introduce SLS parts into functionally demanding applications, it is imperative that they exhibit good surface quality to prevent wear caused by surface friction. Parts produced with SLS, however, typically have a higher surface roughness than those produced through traditional manufacturing techniques. Understanding the relationship between processing parameters and surface quality will allow one to better predict and control surfaces for end-use parts. A design of experiments was formulated to investigate the effects of four process parameters on parts produced across the powder bed: powder type, roller speed, laser power, and scan spacing. To analyze the surface roughness and area ratio of the parts, Focus Variation (FV) technology was implemented. Statistical models were developed to estimate the surface roughness and area ratio of manufactured specimens. Note de contenu : - STATE OF THE ART : Description of SLS technique - Focus variation
- EXPERIMENTAL PROCEDURE :
- RESULTS : Grand means and variances - Two-level general factorial design - Surface roughness - Blasted samplesDOI : https://doi.org/10.3139/217.3900 En ligne : https://drive.google.com/file/d/1pqE4jRpJaHpep2X3OPEw1JRR1LIEyuzL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34007
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXV, N° 2 (05/2020) . - p. 126–138[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 21674 - Périodique Bibliothèque principale Documentaires Disponible Technical products and sustainable production / Oliver Te Heesen in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 6 (06/2013)
[article]
Titre : Technical products and sustainable production Type de document : texte imprimé Auteurs : Oliver Te Heesen, Auteur ; Felix A. Heinzler, Auteur Année de publication : 2013 Article en page(s) : p. 41-43 Langues : Anglais (eng) Catégories : Brillance (optique)
Charges (matériaux)
Matières plastiques -- Extrusion -- Appareils et matériels
Matières plastiques -- Industrie et commerce
Polyamide 12
Tubes
Vis d'extrusion simpleIndex. décimale : 668.4 Plastiques, vinyles Résumé : Trend report - The focus of this year’s Duisburg Extrusion Conference, which took place on May 10, was the importance of complex products under flexible production conditions. In addition, opportunities to permit processing on today’s standard extruders through use of modified polymers and fillers were discussed. Note de contenu : - The potential of engineering plastics
- Machinery requirements
- Flexibility, efficiency and operabilityPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18905
in KUNSTSTOFFE INTERNATIONAL > Vol. 103, N° 6 (06/2013) . - p. 41-43[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 15196 - Périodique Bibliothèque principale Documentaires Disponible The influence of different melt temperatures on the mechanical properties of injection molded PA-12 and the post process detection by thermal analysis / T. Meyer in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 1 (03/2017)
[article]
Titre : The influence of different melt temperatures on the mechanical properties of injection molded PA-12 and the post process detection by thermal analysis Type de document : texte imprimé Auteurs : T. Meyer, Auteur ; A. Harland, Auteur ; B. Haworth, Auteur ; C. Holmes, Auteur ; T. Lucas, Auteur ; P. Sherratt, Auteur Année de publication : 2017 Article en page(s) : p. 90-101 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse des défaillances (fiabilité)
Analyse thermique
Essais de résilience
Essais dynamiques
Matières plastiques -- Moulage par injection
Polyamide 12
Polymères -- Effets de la température
Polymères -- Fusion
Traction (mécanique)Index. décimale : 668.4 Plastiques, vinyles Résumé : Polyamide 12 (PA-12) test plates were injection molded using different melt temperatures and the influence on mechanical properties was investigated using quasi-static tensile and instrumented impact behavior in two conditioned states: dried, and following accelerated moisture intake. Energy absorption in tension is strongly dependent on process temperature (variations up to 99%) and additional variation (around 18%) was evident when testing at different conditioning states. Under high-velocity loading, the total impact energy varied by up to 8.70% and 9.05%, when systematic changes were made to process melt temperature and at moisture content, respectively, with all samples failing ductile. Differential Scanning Calorimetry (DSC) was used to characterise the unique endothermic melting behavior of molded PA-12 samples, by linking different process histories to the respective mechanical properties. With focus on the first heating curve progression, significant changes within the endothermic melting region were pointed out and quantified by using MatLab (software), proving DSC as a reliable testing tool for post-production analysis with increased practical implications regarding quality control as well as failure analysis. Findings for the initial heating curve progression were explained by studying the re-crystallisation peak values during cooling phase and obtained data for the second heating. Note de contenu : - INTRODUCTION AND RESEARCH OBJECTIVES
- EXPERIMENTAL : Materials and injection molding - Sample preparation and conditioning - Quasi-static tensile testing - Instrumented falling weight impact testing - Analysis using differential scanning calorimetry (DSC) - Data processing
- RESULTS AND DISCUSSION : Observation from processing - Influence on tensile behavior - Process influence on impact behavior - Differential scanning calorimetryDOI : 10.3139/217.3288 En ligne : https://drive.google.com/file/d/1t074OZbPAAbUIzy7Or3x3eDYGxl6dsd1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28005
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 1 (03/2017) . - p. 90-101[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 18732 - Périodique Bibliothèque principale Documentaires Disponible Top class - both optically and technically / Volker Eichhorn in PLASTICS INSIGHTS, Vol. 113, N° 6 (2023)
[article]
Titre : Top class - both optically and technically : Transparent polyamides for medical technology Type de document : texte imprimé Auteurs : Volker Eichhorn, Auteur Année de publication : 2023 Article en page(s) : p. 68-71 Langues : Anglais (eng) Catégories : Polyamide 12
Polymères en médecine
Résistance chimique
Résistance thermique
Stérilisation
Technologie médicale
Transparence (optique)Index. décimale : 668.4 Plastiques, vinyles Résumé : Transparent polymers are necessary in medical technology for many reasons. Materials taken into consideration however, often do not achieve the required mechanical properties, chemical resistance or provide the desired transparency. Transparent polyamides meet all these requirements. Special grades can even be steam sterilized more than 500 times. Note de contenu : - PA12/macmi – the all-rounder
- PA MACM12 : an unbreakable PA
- The first transparent PA for steam sterilization
- Reducing energy costs in processing
- Table 1 : Property profile of transparent PA compared to PC and polyarylsulfonesEn ligne : https://drive.google.com/file/d/1V2lxZjJ6OUS7Jr10lHHleuKJP0ishHbD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39999
in PLASTICS INSIGHTS > Vol. 113, N° 6 (2023) . - p. 68-71[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 24151 - Périodique Bibliothèque principale Documentaires Disponible