Fire-resistant coating is a special coating that can form a heat-insulating layer on the surface of a material to prevent the spread of fire. It is usually composed of fire-resistant pigments, resins, thinners and other materials. Fire-resistant coatings are widely used in buildings, ships, subways, tunnels and other fields, which can improve the fire-proof rating of these places and reduce the loss of personal and property caused by fire.
Detection performance and instrument
The following are the key properties that need to be tested for fire retardant coatings and the instruments and equipment that need to be used:
| performance factor | equipment |
|---|---|
| Combustion performance | Vertical burning Tester, horizontal burning Tester |
| fire performance | Fire performance test equipment |
| thermal stability | Thermogravimetric analyzer, thermogravimetric analyzer |
| Water resistance | Moisture penetration test equipment, immersion test equipment |
| Adhesion | Cross cut test machine, peel test machine |
| wear resistance | Abrasion testing machine, friction testing machine, impact testing machine |
| Color and gloss | Color difference meter, gloss meter |
Detection method steps
The following are the properties and testing steps that need to be tested for fire retardant coatings:
Combustion performance: test the combustion performance of the coating with a vertical combustion Tester or a horizontal combustion Tester, and record the test results.
Fire performance: use the fire performance test equipment to test the fire performance of the coating, and record the test results.
Thermal stability: Use a thermogravimetric analyzer or thermogravimetric analyzer to test the thermal stability of the coating, and record the test results.
Water resistance: test the water resistance of the coating with moisture penetration test equipment and immersion test equipment, and record the test results.
Adhesion: Use a scratch Tester and a peel Tester to test the adhesion of the coating to the substrate, and record the test results.
Abrasion resistance: Use abrasion Tester, friction Tester and impact Tester to test the abrasion resistance, friction resistance and impact resistance of the coating, and record the test results.
Color and gloss: Test with a color difference meter and a gloss meter under a standard light source, and record the test results.
For some coatings with special properties, it may be necessary to use other instruments and equipment for testing, and the specific operation steps will also be different.
