Exterior wall paint is a decorative and protective coating applied to the surface of building exterior walls, mainly used for waterproofing, heat insulation, anti-corrosion, beautification and other purposes. It has excellent weather resistance, stain resistance, abrasion resistance and UV resistance, which can effectively prevent wall corrosion, aging and fading, and improve the overall performance and aesthetics of the building. Exterior wall coatings are widely used in the decoration and protection of exterior walls of various buildings such as residential buildings, commercial buildings, industrial buildings, and public facilities.
Assay performance and instrumentation
The following are the key performances that need to be tested for exterior wall coatings and the instruments and equipment that need to be used:
| performance factor | equipment |
|---|---|
| Color and gloss | Color difference meter, gloss meter |
| Weather resistance | Spectral radiation Test Chamber, xenon lamp aging Test Chamber |
| Pollution Resistance | Pollutant adhesion performance testing equipment |
| Peeling resistance | Peeling test machine |
| Crack resistance | Anti-crack test equipment |
| thickness | Thickness Meter |
| Chromatic Aberration and Chromatic Aberration Variation | Colorimeter |
Detection method steps
The following are the performance and testing steps that need to be tested for exterior wall coatings:
Color and gloss: Test with a color difference meter and a gloss meter under a standard light source, and record the test results.
Weather resistance performance: test the weather resistance performance of the coating using a spectral radiation Test Chamber or a xenon lamp aging Test Chamber, and record the test results.
Pollution resistance performance: use the pollutant adhesion performance testing equipment to test the pollution resistance performance of the paint, and record the test results.
Peeling resistance: Use a peeling Tester to test the peeling resistance of the paint, and record the test results.
Crack resistance: test the crack resistance of the paint with crack resistance test equipment, and record the test results.
Thickness: Use a thickness Tester to test the thickness of the paint, and record the test results.
Color difference and color difference change: Use a color difference meter to test the color difference and color difference change of the paint, and record the test results.
The above are the key testing performances of exterior wall coatings and their corresponding testing methods, for reference only.
