Please use this identifier to cite or link to this item: http://dx.doi.org/10.18419/opus-10898
Authors: Guenther, Thomas
Diegel, Lars
Roeder, Marcel
Drexler, Marc
Haybat, Mehmet
Wappler, Peter
Soltani, Mahdi
Zimmermann, André
Title: Surface optimization of micro-integrated reflective optical elements by thermoset injection molding
Issue Date: 2020
metadata.ubs.publikation.typ: Zeitschriftenartikel
metadata.ubs.publikation.seiten: 13
metadata.ubs.publikation.source: Applied sciences 10 (2020), No. 4197
URI: http://elib.uni-stuttgart.de/handle/11682/10915
http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-109159
http://dx.doi.org/10.18419/opus-10898
ISSN: 2076-3417
Abstract: Thermoset materials offer a multitude of advantageous properties in terms of shrinkage and warpage as well as mechanical, thermal and chemical stability compared to thermoplastic materials. Thanks to these properties, thermosets are commonly used to encapsulate electronic components on a 2nd-level packaging prior to assembly by reflow soldering on printed circuits boards or other substrates. Based on the characteristics of thermosets to develop a distinct skin effect due to segregation during the molding process, the surface properties of injection molded thermoset components resemble optical characteristics. Within this study, molding parameters for thermoset components are analyzed in order to optimize the surface quality of injection molded thermoset components. Perspectively, in combination with a reflective coating by e.g., physical vapor deposition, such elements with micro-integrated reflective optical features can be used as optoelectronic components, which can be processed at medium-ranged temperatures up to 230 °C. The obtained results indicate the general feasibility since Ra values of 60 nm and below can be achieved. The main influencing parameters on surface quality were identified as the composition of filler materials and tool temperature.
Appears in Collections:07 Fakultät Konstruktions-, Produktions- und Fahrzeugtechnik

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