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Multi-component Polyurethane Waterproof Coating
1. Description
The two-component polyurethane waterproof coating is a film formed by reaction and solidification of two components A and B. Component A is a transparent to light yellow viscous liquid containing isocyanate end group generated by polymerization of polyether, polyisocyanate and other raw materials; Component B is a paste formed by mixing and processing of cross-linking agent, accelerator, toughener, tackifier, mould inhibitor, filler and pigment. When in use, A and B components are mixed in a certain proportion, stirred evenly, scraped and coated on the base surface, and after several hours of reaction curing, a waterproof coating with elasticity, toughness and durability is formed.
2. Product usage introduction
Multi-component Polyurethane Waterproof Coating is used for spraying method and scraping method.
3. Characteristics
4. Physical properties
Item | Index | ||
I | II | III | |
Tensile strength/MPa ≥ | 2.0 | 6.0 | 12.0 |
Elongation at break/ % ≥ | 500 | 450 | 250 |
Tear strength/ (N/mm) ≥ | 15 | 30 | 40 |
Low temperature bending property/ ℃ ≤ | -35, no cracking | ||
Impermeability | 0.3Mpa, 120min impermeable | ||
Solid content / % ≥ | 92 | ||
Surface dry time/ h ≤ | 12 | ||
Dry time/ h ≤ | 24 |