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The role of solvents in coatings is often underestimated; they are considered to be volatile components that do not remain in the coating film, and therefore it is believed they do not have a significant impact on the quality of the coating film. In fact, this is not the case; factors such as the solvating power and evaporation rate of various solvents have a significant impact on various aspects of coating production, storage, and application, as well as on properties such as the gloss, adhesion, and surface condition of the coating film. Solvents can dissolve and dilute the film-forming substances in coatings, reducing their viscosity and thereby facilitating application through methods such as brushing, spraying, dipping, or pouring. According to the Arrhenius equation 1/η=Ae-E/RT, the viscosity of a coating decreases as temperature increases, where A and E are material constants. Under different application conditions, coatings require different viscosities. Low-viscosity coatings are suitable for spraying and dipping, while high-viscosity coatings are suitable for pouring, rolling, and thermal spraying. Choosing the right solvent can optimize the properties of the coating. High-boiling-point solvents can enhance the storage stability of coatings, prevent the film-forming substances from caking together, and reduce skinning on the paint surface. Solvents help to ensure good leveling of the coating film, preventing problems such as an overly thick or too thin coating layer, as well as brush marks and wrinkles caused by poor painting properties. Adding a solvent to the coating improves its wettability and penetration on the surface of the object to be coated, thereby enhancing the adhesion of the coating. As aromatic synthetic compounds, diisopropylbiphenyl and diisopropylnaphthalene possess excellent thermal stability as well as appropriate viscosity and pour points, and have therefore been widely used in the market as high-temperature organic heat carriers. In recent years, these two types of products have been increasingly used in the dye, coating, and other industries as high-boiling-point non-polar solvents, owing to their characteristics such as being colorless and odorless, having an appropriate viscosity, a high boiling point, and strong dissolving power for dyes. For more industry consultations and technical support regarding heat transfer oil, please visit Schultz Heat Transfer Oil’s official website at www.shschultz.com