Elektrostatik boyamaya uygun iletken poliamid/ karbon siyahı, karbon lif ve karbon nano tüp kompozitleri

Conductive polymer composites (CPCs) coming out from the combination of an insulating polymer matrix with conductive fillers exhibit several interesting features and many applications. In automotive industry metal parts can be replaced by CPCs which means a vehicle with the lower weight and lower fuel consumption.The motivation behind this study was to produce an engineering plastic in order to use in the automotive industry with cost reduction, to improve mechanical properties and production efficiency. For this purpose, this study was aimed to find a conductive polyamide compound (CPAC) formula in order to use as raw material to produce hubcap (wheel cover) which is suitable for electrostatic painting (EP) system. The CPAC was prepared by extrusion methods by using commercial polyamide (Minlon) and carbon based conductive materials such as carbon black (CB), carbon fiber (CF), and carbon nano-tube (CNT). Compatibilizer was also added to the formula to obtain the suitable CPAC, which covers the requirements for the resulting composite. Formulations with different carbon filler contents were prepared and then produced and tested. They were compared with commercial product of Noryl, which have been used for EP applications. The disadvantage of Noryl is poor mechanical properties for some applications such as wheel cover. There are types of method to produce the conductive polymer composites (CPCs) such as; solution, melt mixing etc. In this study, the extrusion, which is one of the melt mixing method, was used. After compounding materials, electrical conductivity of composites was measured by a 4-point probe method. ATR-FTIR, DSC, SEM and mechanical properties tests were also performed on the samples. Wheel cover was produced from the samples that have the desired properties and after electrostatic painting the basic tests such as cross cut, hardness, drop weight impact were carried out on the final product. The results of all these tests suggested that, the suitable composites for EP were prepared and these composites fit the requirements of the wheel cover.