How tightly sealed are connectors really ? / Achim Frick in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 6 (2021)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 111, N° 6 (2021) . - p. 37-40 Titre : How tightly sealed are connectors really ? : Measurement method for the exact leakage determination of polymer-metal hybrid parts Type de document : texte imprimé Auteurs : Achim Frick, Auteur ; Marcel Spadaro, Auteur ; Markus Rettenberger, Auteur ; Michael Gehde, Auteur Année de publication : 2021 Article en page(s) : p. 37-40 Langues : Anglais (eng) Catégories : Adhésion métal/polymère Assemblages multimatériaux Connecteurs électriques Cuivre Etanchéité Matières plastiques -- Moulage par injection Perméation Polypropylène Index. décimale : 668.4 Plastiques, vinyles Résumé : The interfacial tightness of hybrid polymer-metal parts such as injection-molded connectors represents a decisive quality characteristic. Until now, however, there has been a lack of suitable measurement technology with which to quantify the media tightness of such molded parts. A new method delivers significantly more accurate results than previous test methods. Note de contenu : - Limits of the differential pressure leakage method - The new DTP method - Setup for the comparison of the measurement methods - Only one method shows clear differencees - Figure : The DDP method enables more accurate determination of the tightness of polymer-metal hybrids - Fig. 1 : Tthree-dimensional view of a test specimen with metal insert and test specimen located between pressure and measuring chamber, arrows show possible permeation paths and interfacial leakage paths - Fig. 2 : Leakage measurement results using different measuring methods on the same samples at 23 °C (averages from five measurements each): in contrast to the differential pressure method, clear differences in the leakage rate can be seen with the helium vacuum test - Fig. 3 : Differentiation between permeation and interfacial leakage determined by using DTPM on thermally post-treated, adhesion-modified polymer-metal hybrids at 23 °C: thermal post-treatment of the hybrid parts clearly influences the leakage rate as well as its development over time - Table : Injection molding conditions for the production of the investigated test specimens En ligne : https://drive.google.com/file/d/1DtKqECMAMcGQYjiiim4f_NE-Q2CV4kUQ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36177 [article]

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