The waterproof coating of the waterproof paint bucket is waterproofed by forming a complete coating film to block the penetration of water or the penetration of water molecules. Many polymer materials can form a complete and continuous coating film after drying. There are always some gaps between the molecules and molecules of the solid polymer coating, and the width is about several nanometers. So it can be completely passed, but the water in nature is usually in the state of association. tens of water molecules form a large molecular group due to the action of hydroquinone, so it is actually difficult to pass the gap of the polymer. This is the waterproof coating film that is waterproof.
The film formation process of the emulsion type waterproof paint bucket is completed by the fusion between the emulsion particles, and the gap between the molecules after the film formation is larger, and the coating film is relatively loose. Solvent-based waterproof coatings rely on polymer molecules to form a film during solvent evaporation. The molecules are tight and the voids are small. Therefore, for the same polymer, the water-repellent properties of solvent-based coatings are often It is better than emulsion type coating, but its application is limited because it can cause harm to human body and environment during production, construction and application.https://www.fhpails.com/