Entering the third dimension with light-colored LDS additive / Markus Heidebrecht in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 5 (05/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 5 (05/2017) . - p. 45-48 Titre : Entering the third dimension with light-colored LDS additive : Selective metallization of plastic components with laser direct structuring Type de document : texte imprimé Auteurs : Markus Heidebrecht, Auteur ; Ulrich Quittman, Auteur ; Stefan Gutberlet, Auteur Année de publication : 2017 Article en page(s) : p. 45-48 Langues : Anglais (eng) Catégories : Cuivre Electronique imprimée Matières plastiques -- Additifs Matières plastiques -- Métallisation Matières plastiques dans les équipements électriques et électroniques Polycarbonates Structuration directe par laser Terpolymère acrylonitrile butadiène styrène Index. décimale : 668.4 Plastiques, vinyles Résumé : Three-dimensional molded interconnect devices combine electronic and mechanical functions. Plastics additives are necessary for activating surfaces using lasers, and they enable selective metallization. Relevant parameters of various additive/polymer combinations have been identified in a current study. Note de contenu : - Specific metallization behavior - Improved copper deposition in PC + ABS - Variation of bath temperature and metallization duration - FIGURES : 1. Merck and LPKF have developed an additive for laser direct structuring of light-colored plastic components. Shown here is a light-colored powder-coated component that is selectively metallized using the LDS process - 3. Temperature-dependent copper deposition rates of various LDS additive in PC-ABS - 4. Time-dependent determination of the copper layer thickness of various additives in PC-ABS - 5. Copper deposition behavior of Iriotec 8850 in various plastics En ligne : https://drive.google.com/file/d/1ZfVJLb0-r6H01ntAWyomgiUlb-zZnVKj/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28723 [article]

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Processing LDS-circuit boards by selective laser sintering / Andreas Wörz in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 2 (05/2019)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 2 (05/2019) . - p. 248-254 Titre : Processing LDS-circuit boards by selective laser sintering Type de document : texte imprimé Auteurs : Andreas Wörz, Auteur ; K. Wudy, Auteur ; Dietmar Drummer , Auteur ; Markus Heidebrecht, Auteur ; S. Klein, Auteur Année de publication : 2019 Article en page(s) : p. 248-254 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Electronique imprimée Frittage laser Matières plastiques -- Additifs Matières plastiques -- Métallisation Matières plastiques -- Propriétés mécaniques Matières plastiques -- Propriétés thermiques Polyamide 12 Index. décimale : 668.4 Plastiques, vinyles Résumé : As the demand for individualized products rises, the development and need for additive manufacturing (AM) techniques such as selective laser sintering (SLS) has strongly increased. The industrial use of these procedures for prototypes or small-scale production lines has grown due to their specific characteristics like the high achievable complexity. With the increasing demand for electrification and functionalization, the combination of AM with laser-direct structuring (LDS) gains interest. Therefore, the powder used for the investigation is dry coated with a LDS-additive, which enables laser activation and a metallization of the activated sections in a metallization bath. To characterize the influence of the LDS-additive on the process, the powder properties were investigated for unfilled and successive increased additive content. The thermal process window was identified by standard and process adapted isothermal differential scanning calorimetry. This showed a decrease of the isothermal crystallization time due to nucleation effects of the additive. Subsequently, parts were produced with a parameter study and showed a demand for a higher energy density. The resulting parts were then metallized with a parameter variation and characterized by stereomicroscopy. To investigate the influence of the different parameter sets and the LDS content, the mechanical properties were determined. Note de contenu : - Material - Bulk properties - Flowability - Thermal properties - Processing - Metallization - Mechanical characterization DOI : 10.3139/217.3670 En ligne : https://drive.google.com/file/d/1XGo-V469wWoo_DDCz8B8wH-dRuVynXSW/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32399 [article]

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