pps proceeding - Abstract Preview
pps proceeding
Symposium: S12 - Welding and Joining Technology
Poster Presentation
 
 

INVESTIGATION AND APPLICATION OF A GRAPHENE LAYER AS PARTICULATE SUSCEPTOR IN POLYMER HYBRID MATERIALS

Silva Cláudia (1)*, Pötschke Petra (1), Simon Frank (1), Holzschuh Matthias (1), Pionteck Jurgen (1), Heinrich Gert (1), Wießner Sven (1), Zimmerer Cordelia (1), Ziegler Lisa (1)

(1) Leibniz Institute of Polymer Research Dresden - Saxony - Germany

The overwhelming electrical, thermal, mechanical, and optical properties of graphene make it a potential material for applications in several fields. [1] Here, we report the use of graphene derivatives as susceptor for magnetic field induction heating, to join different polymers by chemical reaction. This technique appears to be suitable to complement the traditional joining technologies. Our aim is to deposit a thin layer of graphene on a Bisphenol-A based polycarbonate (PC) to be joined with a polyvinylamine (PVAm). Successful experiments with these two polymers are already reported in the literature, using silver as susceptor. [2] To serve as susceptor, graphene derivative layer must possess high electrical conductivity in order to give, as loss-free as possible, the energy from the magnetic high field in form of heat to the surrounding polymer. Therefore, the graphene does not have to be present as a homogeneous layer in the polymeric interphase. Also, the thinnest possible layer should be present to minimize the heating of the bulk polymers. To fulfill all the requirements, graphene derivatives are prepared by exfoliation of graphite and liquid phase functionalization, and characterized in terms of their molecular structure, dispersibility, and electrical conductivity. Then, a discontinuous film is deposited on the PC surface by spin coating or spray coating to form a hybrid structure. Several attempts are made to determine the best conditions to produce the graphene derivatives and the hybrid. Firstly, the preparation conditions are tested in model experiments. Subsequently, the hybrid structures will be transferred to the Dresden High Magnetic Field Laboratory (HLD) and the experiments will be performed with high magnet field pulses up to 60T. After the successful joining between PC and PVAm, there are still many opportunities to explore within this field, including different polymers or different geometries for the parts to be joined.