# Electrical Property Measurement on Antistatic Coating During Aging Process
## 1 Introduction  
One of the protection methods against an electrostatic charge is the usage of conductive coatings. Methyl-silicone resin, with the addition of a conductive polymer, is one such material that is suitable for this type of coating. Individual electrical parameters need to be studied on these coatings because these parameters determine the charge leakage ability. The focus of this study was to find out if the coating would change its electrical parameters after some time and if the antistatic protection purpose of the coating would deteriorate. For our study, we chose coatings based on a single-component paint, which was dissolved in xylene. Xylene is a solvent used for methyl-silicone resin in which white titanium pigment is added. We chose coating samples that had been spread on both the conductive and insulation materials. Conductive polymers (CPs), sometimes referred to as organic semiconductors, have a wide range of potential applications due to their properties; therefore, there is a high interestof scientific teams around the world. They are recommended as alternative materials for a wide range of practical applications [1; 2; 3; 4; 5; 6; 7]. These materials have a possibility of changing their specific electrical conductivity from values typical of insulators to values typical of metallic materials. Thus, a combination of electrical properties typical to semiconductors with material properties that allow for easy processing provides many advantages. Not only can the structure of these materials be changed but also their physical properties are modified according to the external environment. Therefore, they are sometimes referred to as smart materials [1; 8]. Unlike traditional polymers, CPs show so-called intrinsic electrical conductivity. Examples of such known CPs are polyacetylene (PA), polypyrrole (PPy), polythiophene (PTs), polyaniline (PANI), polyphenylene (PPE), or poly(p-phenylenevinylene) (PPV), poly(p-phenylenediamine) (PPDA), etc. [9; 10]. The simplest CP in terms of structure is polyacetylene PA, whose conductivity by iodine vapor is increased very significantly (up to \(5\times 10^{3}\) S\(\cdot\)m\({}^{-1}\)). However, this material is not very suitable for technological applications due to its low stability in case of contact with air [3]. Therefore, attention has been paid to more stable CPs since the late 1980s, especially polyaniline PANI and polypyrrole PPy [1]. PANI and PPy belong to p-type semiconducting polymers with relatively high conductivity and environmental and chemical stability in acidic environments. Its synthesis in the forms of powder, film, and composite materials is easily reproducible [11; 12; 13; 14; 15; 16]. If an inorganic or organic acid is used as the proton donor, the specific conductivity of these materials increases in the range of eight to ten orders of magnitude [9; 17]. The electric conductivity of these conductive polymer materials is based on the regular alternation of single and double bonds, i.e., by conjugation and by the presence of charge carriers. Carriers are created by a process analogous to conventional semiconductors called doping, while the increase or optimization of conductivity can also be achieved by doping [1; 9; 17]. The nature of the dopant affects not only the electrical, mechanical, and physical but also the morphological properties of the polymer. The conductivity of these substances varies within the range from \(\times 10^{-4}\) to \(\times 10\) S\(\cdot\)m\({}^{-1}\)[1; 9]. Another common feature of CPs is their electrical activity and the possibility of their existence in several stable oxidation states. The transition between these oxidation states is generally possible, which results in changes in the electrical, mechanical, chemical, and morphological properties of the material [18; 19]. The application areas for conductive polymer materials lie in the variability of the CP properties, allowing them to be used in a wide range of applications.