Question
Download Solution PDFWhich of the following components generally evaporate in the organic coating?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Organic coatings are made up of binders, pigments, additives, and solvents. Among these, solvents are the only components that generally evaporate after application.
Detailed Explanation:
1. Binders: These are film-forming agents that hold pigment particles together and provide adhesion to the substrate. They remain on the surface and do not evaporate.
2. Pigments: These are solid particles used to give color, opacity, and specific properties like UV or corrosion resistance. They also do not evaporate.
3. Additives: Added in small quantities to modify coating properties (e.g., drying, flow, gloss). They mostly stay in the film and do not evaporate.
4. Solvents: These are volatile liquids used to dissolve binders and adjust viscosity for easy application. After the coating is applied, solvents evaporate, leaving behind a solid film of binder, pigment, and additives.
Example: When you apply paint, the smell comes from evaporating solvents. As these evaporate, the paint dries and hardens into a protective layer.
Last updated on Jul 2, 2025
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