1. Definition of Waterproof Coatings: Waterproof coatings are essentially liquid polymer-based materials that remain in an amorphous state under normal humidity conditions. When applied to structural surfaces through a coating process, they either evaporate solvents or react chemically between components to form a dense thin film. This film provides excellent water impermeability, weather resistance, and elasticity, effectively isolating the structure's surface from moisture and serving as both a waterproofing and moisture-proofing solution.
2. Characteristics of Waterproof Coatings: â— They exhibit superior waterproofing capabilities, forming a seamless waterproof membrane that works exceptionally well on complex surfaces. â— The application process is straightforward, allowing for quick construction times. â— These coatings have great elasticity and strong adhesive properties, making them ideal for waterproofing corners, facades, joints, and other interface areas. â— They contribute to reduced environmental pollution and ensure safety during use. â— They are highly adaptable to varying temperatures and are easy to repair if needed.
3. Classification of Waterproof Coatings: A. Bituminous-Based Waterproof Coatings: These include water-based or solvent-based coatings derived from asphalt: - Lime Emulsified Asphalt - Bentonite Emulsified Asphalt - Asbestos Emulsified Asphalt B. High Polymer Modified Bituminous Waterproof Coatings: Prepared using petroleum asphalt as the base material, enhanced with synthetic polymers and additives: - Water-Emulsion Type: SBS water-emulsion, Neoprene water-emulsion, Reclaimed Rubber Modified Asphalt - Solvent Type: SBS Butyl Rubber, Reclaimed Rubber, PVC Modified Asphalt - Hot Melt Type: SBS Modified Asphalt C. Synthetic Polymer Waterproof Coatings: Single-component coatings made from synthetic rubber or resin, along with auxiliary agents and modifiers: - Volatile Type: Chlorosulfonated Polyethylene, Silicone Rubber, EPDM, Polymer Cement JS, Acrylic, EVA - Reactive Type: 851, 911, Color PU, Petroleum Asphalt PU, Reactive Polymer Cement, One-Component Wet-Curing Polyurethane Classifications can also be based on film formation mechanisms (reactive curing, volatile curing), components (single, double, multi-component), thickness (thick, thin coatings), and whether they contain solvents (water-based, solvent-based, solvent-free).
4. Physical Properties of Waterproof Coatings: Key physical properties include solid content, tensile strength, elongation at break, low-temperature flexibility, bond strength, heat resistance, water impermeability, and water absorption.
I hope this gives you a comprehensive understanding of what waterproof coatings are and their various types and properties! Let me know if you need any more details or examples.
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