Test method for performance of polymer cement – based waterproof coatings
Polymer cement-based waterproof coating is a kind of waterproof coating made of polymer as the main raw material, by adding cement, filler, additives, etc. It has good adhesion, water resistance, temperature resistance, chemical corrosion resistance and other characteristics, can effectively prevent moisture penetration, protect the surface of the building from water, moisture and so on. Polymer cement based waterproof coating is widely used in buildings, underground engineering, water conservancy engineering and other fields, such as roof, wall, basement, pool, water tower and other places of waterproof coating, to improve the waterproof performance and service life of buildings.
Test method for performance of polymer cement – based waterproof coatings
Test performance and instrument
| Name of performance | Instruments and equipment used | Step of detection |
|---|---|---|
| Force of adhesion | Adhesion tester | 1. Scratch a straight line on the coating surface; 2. Use the adhesion tester to measure the adhesion of the coating surface |
| Thickness of film | Coating thickness meter | 1. Use the coating thickness meter to measure the film thickness of the coating |
| Water resistance property | Water immersion tester | 1. Place the coating sample in the water immersion tester; 2. Measure the water resistance of the coated sample in a certain period of time |
| Temperature resistance property | Thermal cycle test chamber | 1. Place the coating sample in the thermal cycle test chamber; 2. Observe the performance changes of the coated samples in high and low temperature environments |
| Chemical corrosion resistance | Chemical tolerance test chamber, microscope | 1. Place the coating sample in the chemical tolerance test chamber and expose it to chemical reagents; 2. Observe the changes of the coated samples and observe the surface morphology using a microscope |
| Density of density | Density meter | 1. Place the paint sample in the densitometer; 2. Measure the density of the paint sample |
| pH value | PH meter | 1. Place the paint sample in the pH meter; 2. Measure the pH value of the paint sample |
| Elongation at break | Elongation at break tester | 1. Place the coating sample in the elongation at break tester; 2. Test the elongation at break of the coating sample |
Test method for performance of polymer cement – based waterproof coatings
In the detection of adhesion, water resistance, chemical corrosion resistance and other special properties, it is necessary to pay attention to the control of the detection environment and the selection of detection time to ensure the accuracy and reliability of the test results. Attention should also be paid to the origin and quality of the specimen and paint samples used during the testing process to ensure the representativeness and reliability of the test results.