چكيده به لاتين
Surfaces with a water-drop contact angle of more than 150 degrees are called superhydrophobic surfaces. Application of superhydrophobic surfaces is important in various industries, including condensation. The superhydrophobic surface provides the basis of the condensation of the diameter, which causes increase of the condensation rate. In this thesis, the production of superhydrophobic surfaces on copper is carried out using an electrochemical method and a hydrophobic coating layer. Creating appropriate roughness and reducing surface energy are essential factors for the production of superhydrophobic surfaces. With the help of the electrochemical process on copper, the two-component electrolyte of sodium hydroxide and potassium persulfate, copper oxide rocks on the copper metal is introduced. Then, using its single layer, the octane decane thiol, surface energy has decreased; so that the contact angle of the surface rises above 150 degrees and provides suitable conditions for the condensation of the diameters.
In the present study, the effect of changes in the parameters related to the process of experiments, such as time, electrical current and concentration in the electrochemical process and coating time on the hydrophobicity, have been evaluated. To investigate the micro/nanoscale structure, scanning electron microscopy photographs are provided and reviewed in different test modes. To measure the superhydrophobicity, the mean contact angles were recorded on the measured surfaces and the highest contact angle of 158.8 degrees. Sustainability of water and sea levels has also been studied. Water resistance provides these surfaces a suitable option for application in condensation of diameters.
