Key properties and testing methods of polyurethane waterproof coatings
Polyurethane waterproof coating is a kind of polyurethane resin as the main component, adding a variety of fillers, diluents and other substances made of waterproof coating, has excellent weather resistance, odolnost proti opotřebení, corrosion resistance and chemical resistance. Polyurethane waterproof coating is widely used in building roof, basement, ground, pool, storage tank and other waterproof engineering and railway, highway, bridge, tunnel and other transportation infrastructure waterproof and anti-corrosion field.
Test performance and instrumentation
The following are the key properties of polyurethane waterproof coating to be tested and the instruments and equipment to be used:
Key properties and testing methods of polyurethane waterproof coatings
Performance factor instrumentation
| Performance factor | Instrument and equipment |
| Construction performance | Construction performance testing equipment |
| Weather resistance | Spectral radiation test chamber, xenon lamp aging test chamber |
| Water resistance | Spectral radiation test chamber, xenon lamp aging test chamber |
| Pevnost vazby | Grid testing machine, stripping testing machine |
| Impact resistance | Impact testing machine |
| Odolnost proti opotřebení | Wear testing machine |
| Color and gloss | Color difference meter, měřič lesku |
Key properties and testing methods of polyurethane waterproof coatings
Procedure of detection method
The following is the performance of polyurethane waterproof coating to be tested and its testing steps:
Construction performance: Use construction performance testing equipment to test the fluidity, brushability, drying time and other construction performance of the coating, and record the test results.
Weatherability: Test the weatherability of the coating using a xenon lamp aging chamber or a spectral radiation chamber, and record the test results.
Water resistance: Use water penetration test equipment and soaking test equipment to test the water resistance of the coating, and record the test results.
Pevnost vazby: The coating adhesion to the substrate was tested using the delimiting tester and the stripping tester, and the test results were recorded.
Impact resistance: The impact testing machine is used to test the impact resistance of the coating, and the test results are recorded.
Odolnost proti opotřebení: Wear testing machine is used to test the wear resistance of the coating, and the test results are recorded.
Color and luster: Test with color difference meter and luster meter under standard light source and record the test results.
For some special coatings, it may be necessary to use other instruments and equipment for testing, and the specific operation steps will be different.