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Project leader: Prof. Dr.-Ing. Gerhard Ziegmann and Prof. Dr.-Ing. Joachim Deubener
Funding period: 2010 - 2012
Funding body: DFG, Bonn
Funding code: -
Contact: Dipl.-Ing. Randolf Hoffmann and Dipl.-Geow. Simon Striepe
Due to their good chemical and thermal resistance, their optical properties, their ability to be sterilized, their biocompatibility and the fact that they are easy to clean, microstructured glass components are used in many applications. Nevertheless, current production techniques for such glass components are not suitable for realizing cost-effective mass production. Therefore, it is necessary to find new production possibilities to increase the cost efficiency of the production of microstructured glass components and at the same time to ensure the high precision of the production with short cycle times.
The aim of the project is to systematically investigate the processability of glass in the micro-injection molding process. To this end, an experimental micro-injection molding plant is to be developed and built on a laboratory scale. In addition, the thermodynamic properties of chemically resistant phosphate glasses with a low glass transition temperature will be investigated with special consideration of the ambient conditions prevailing in the micro-injection molding process. Furthermore, the effects of the mold cavity material and its surface quality on the flowability of the glass melt in the microcavities and novel methods of producing these cavities are being investigated. A mathematical model will be developed to simulate the flow of the melt in the microcavities. Finally, the process parameters and quality control methods that influence quality (optical and mechanical properties, residual stresses, surface roughness, geometry and dimensional accuracy) are to be identified.