Putty is a paint material used to fill and repair building surface defects, level the surface, and increase paint adhesion. It is usually composed of raw materials such as gypsum, magnesium oxide, silicate, and auxiliary components such as fillers and thickeners. Putty has the advantages of good filling, wear resistance, water resistance, weather resistance, etc. It can level various wall surfaces and provide a uniform foundation for paint. Putty is widely used in architectural decoration engineering and is an important link in wall decoration and paint construction.
Detection performance
Putty needs to detect the following properties:
| performance | Test items |
|---|---|
| Bond strength | The degree of adhesion between the putty coating and the substrate |
| thickness | Thickness of putty coating |
| hardness | Hardness of putty coating |
| wear resistance | Abrasion resistance of putty coating |
| water resistance | Water resistance of putty coating |
| weather resistance | Anti-aging performance of putty coating under different climatic conditions |
| drying time | Drying time of putty coating |
| Crack resistance | Crack resistance of putty coating |
| other | Such as coating fire resistance, mildew resistance, etc. |
Detection method
Adhesive strength: The degree of bonding between the putty coating and the substrate is tested by cross-hatch method, peeling method, tensile method and other methods.
Thickness: Measure the thickness of the putty coating with a coating Thickness Gauge, millimeter ruler and other equipment.
Hardness: Use pencil Hardness Tester, Rockwell Hardness Tester and other equipment to test the hardness of the putty coating.
Abrasion resistance: Use abrasion test, scratch test and other methods to test the wear resistance of putty coating.
Water resistance: test the water resistance of the putty coating by immersion test, spray test and other methods.
Weather resistance: test the anti-aging performance of the putty coating under different climatic conditions through artificial accelerated aging test or natural climate exposure.
Drying Time: The drying time of the putty coating was measured by timing.
Crack resistance: test the crack resistance of the putty coating by flexural test, freeze-thaw test and other methods.
Others: According to the specific types of putty and testing items, select appropriate testing methods and equipment for testing, such as testing the fire resistance and mildew resistance of the coating.
Beichao reminds you: the performance test of putty needs to be carried out in accordance with relevant standards and methods to ensure the accuracy and comparability of test results. At the same time, the scope and accuracy of different detection methods are also different. Therefore, appropriate methods and equipment should be selected before testing, and adequate sample preparation and test plan design should be carried out.
