Cooling systems remove heat from components and industrial equipment. Water cooling, employing natural waters, is typically used for cooling large industrial facilities, such as power plants, factories or refineries. Due to moderate temperatures, cooling water cycles are susceptible to biofouling, inorganic fouling and scaling, which may reduce heat transfer and enhance corrosion. Hypochlorite ...

The aim of this study is to investigate the mechanical properties coatings based on ED-20 epoxy resin, manufactured with polyethylenepolyamine or polyamidepolyamine used as hardeners. Instrumented indentation a Berkovich triangular pyramid determine properties. Indentation hardness, reduced elastic modulus, and creep at given holding time are characteristic parameters. results testify that made...

The adhesion durability of coatings and encapsulant materials utilized in electronic packaging is vital for device reliability in the microelectronics industry. Due to adverse operating conditions such as high moisture and high temperature environments, the adhesion between an adhesive and its substrate is typically compromised. This thesis addresses the advantages of employing plasma pretreatm...

The chromatographic method used to monitor the Bisphenol-A manufacturing process was improved using Agilent RRHT Eclipse XDB-C18 columns. These columns use 1.8-μm particles versus conventional 3.5-μm or 5-μm particles. The improved method allowed seven times faster analyses, improved resolution, and higher sensitivity. Introduction Bisphenol-A (Figure 1) is a highly versatile material used to m...

In this study, the effect of surface roughness and roughness morphology on the bond strength of WC-Co-Cr coatings has investigated. The three different surfaces morphology are use for this purpose. The first and tow samples sandblasted with alumina and silicon carbide respectively. Other sample no sandblasted before spraying process. The same WC-10Co-4Cr coating deposited on the substrates with...

Epoxy and dicyclopentadien (DCPD) are two common healing agents, which are introduced into epoxy matrix through encapsulation in order to prepare self-healing composites. In a comparative study, the compatibility of healing agents and epoxy matrix is investigated through experimental tests and DFT calculations. The interaction energy is considered to be the determinative parameter in DFT calcul...

The modification of carbon fibers for improving adhesion between fibers and an epoxy resin in composite materials has become the focus of attention. In this work the carbon fiber coating process has been devised in a way preventing the stiffening and clumping of fibers. To improve interactions between coated fibers and a resin in composites, four types of silica coatings with different organic ...

Epoxy coatings are used in a wide variety of applications due to their excellent chemical, thermal, and mechanical properties. However, susceptibility UV degradation has limited use exterior applications. Usually, organic absorbers stabilizers added epoxy systems improve stability, but performance decreases over time the loss UV-stabilizers. In this study, novel method was developed encapsulate...

Epoxides are frequently used in coatings due to their great adhesion most materials, high resistance towards chemicals and well-defined material properties. Onium salts such as iodonium sulfonium one of the widespread classes initiators light-induced cationic polymerization epoxides. We successfully synthesized onium based on group 14 16 elements periodic table. They were then characterized usi...