Isıtıma sistemleri için ısı yayan elektronik nanokompozit malzemelerin üretimi ve endüstriyel uygulamaları

Electrical heating technology is employed in many devices or device components nowadays. The technology is based on the heat generation of flowing current through metal thanks to its resistance. Materials science as an interdisciplinary science can be defined as investigation and production of suitable material for devices to supply human needs. In the scope of thesis, it is aimed to produce conductive polymeric composite films with carbon based filler to be replaced present metallic heating elements. Naturally insulating polymers were transformed to a conducting material via carbon based fillers. The produced films were characterized through XRD, XPS, FT-IR, DTA-TG, SEM and NI equipments. In addition to these characterizations, electrical properties and heating behaviors of films were determined. By using the optimum films, some applications as heat releasing fabrics, portable sauna, boiler and green house heating systems were produced. In conducting polymer composites there is a insulator-conductor transition at a critical filler concentration named as percolation threshold. The concentrations were determined as 15 and 13 percentages for graphite and carbon black filled composite films respectively. In order to decrease percolation threshold, the films including graphite and carbon black together were produced. The synergetic effect which is defined as co-percolation supplied lower resistance values with lower filler content. If mass production objective is taken into account; decrease in the filler content will be important about production costs. In addition to scientific results; it must be noted that the originality and innovation of the study was approved by some foundations. Firstly the study was protected by Turkish Patent Institute with patent number 2009/05515. It was funded by SANTEZ program of Turkish Republic Ministry of Science, Industry and Technology between 2009-2011 (00360.STZ.2009-1).Finally it is selected the Best SANTEZ project in March 2013, and the prize was presented by the minister Nihat ERGÜN.