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Polymer composites and, in particular, nanocomposites are key materials in (micro-)electronics and electrical engineering for usage in circuit boards, power modules for automotive applications as well as high-voltage generators and transformers. Both, the increasing integration density in electronics and the need for increased power-to-weight ratio and efficiency of generators and transformers, lead to demanding operating conditions (e.g. increased temperature) and require the use of materials and designs that provide improved thermomechanical stability, thermal conductivity and sufficient strength at different stress ranges to ensure reliability during operation. The PCCL focuses on:

  • Nanocomposites with increased thermal conductivity
  • New curing techniques for epoxy resins (patent-protected)
  • New adhesives (polymer matrices / nanocomposites) based on renewable raw materials with excellent insulation properties against high voltages (AC / DC)

With respect to applications in microelectronics, functional (photo)polymers are investigated which enable the space-resolved coverage/protection of substrate areas for, e.g., wet-chemical substrate treatments. The most relevant properties of such photoresists are excellent adhesion to the substrates, fast and highly reproducible processability, as well as the resolution with which geometric patterns can be reproduced in the photoresist. Examples of the developments delivered by the PCCL include:

  • Poly(2-oxazoline)-derived photoresists that can be developed in non-alkaline aqueous solutions (patent-protected)
  • Aromatic-free photoresists derived from renewable raw materials such as coconut oil
  • Polymer-based bottom antireflective coatings (bearing the anthracene chromophore) that increase the resolution of photoresists

 

Head of Research Group - Contact Priv.-Doz. Dr. F. Wiesbrock

Priv.-Doz. Dr. Frank Wiesbrock
frank.wiesbrock@pccl.at