Due to the limitations of conventional printers, 3D printing can be a promising approach to fusion thermoelectric devices onto fabric. Printable materials with good mechanical flexibility can also be used by wearable thermoelectrics that convert body heat energy into electricity. In this research, first, polypropylene filament was produced and printed by Fused Deposition modeling 3D printer and suitable printing parameters were obtained. The polypropylene filament was then printed on the fabric with different parameters of printing speed, number of layers, layer thickness, deposition angle and extruder temperature. The adhesion strength of polymer layers printed on polypropylene fabric was eva‎luated by peeling test. The cross-sectional morphology of the printed layer on the fabric was also investigated by FE-SEM. In order to achieve thermoelectric properties, multi-walled carbon nanotube/copper nano oxide/polypropylene nanocomposite filament was produced and printed on the fabric by a 3D printer. Electrical conductivity and seebeck coefficient of nanocomposite filaments and printed layer on fabric were measured. The mechanical properties of the filaments were investigated and characterized by FESEM, XRD, TGA and DSC. It should be noted that all experiments were based on the Taguchi test design. The results showed that a single layer printed polymer layers with average printing speed (50 mm/min), highest extruder temperature (194°C), medium layer thickness (0.3mm) and deposition angle Equal to Zero degree had a higher peeling force. The electrical conductivity of the masterbatch was 5-10*667/1 s/cm, the nanocomposite filament was 6-10*586/2 s/cm and the printed polymer layer was 7-10*42/3 s/cm. The seebeck coefficient of masterbatch was 489µv/k, the filament was 430µv/k and the polymer layer printed on the fabric was 220µv/k.

افسانه ولي پوري، محسن بدرسماي

محمدعلي الشريف

كميل نصوري، صديقه برهاني