A clear finish is a decorative coating that is characterized by a smooth, uniform, glossy finish. Finish paint is widely used in automobiles, furniture, construction and other fields to improve the decorative effect and appearance quality of products. The finish paint can have different characteristics such as gloss, color, coating quality and durability according to different needs and application scenarios.
Detection performance
The following is a brief description of the performance parameters that need to be tested for the finish paint, as shown in the following table:
| performance parameter | Test Methods |
|---|---|
| Gloss | Gloss meter measurement |
| chromatic aberration | Color Comparator Measurements |
| hardness | Pencil hardness measurement |
| viscosity | Viscometer measurement |
| drying time | Oven measurement |
| weather resistance | Artificial accelerated aging test |
| chemical resistance | Chemical Resistance Test |
| wear resistance | wear test |
| Adhesion | Cross-hatch method measurement |
Detection method
The following is a detailed description of the test methods for the performance parameters that need to be tested for the finish paint:
Gloss: Use a gloss meter to measure the gloss of the finish paint to evaluate the gloss effect of the surface and the stability of the gloss.
Color Difference: Measure the color difference of a clear finish using a color comparator to assess its color consistency and accuracy.
Hardness: Using the pencil hardness test, a scratch test is performed with a pencil to evaluate the hardness and abrasion resistance of the finish.
Viscosity: Use a viscometer to measure the viscosity of the finishing paint to evaluate its brushability and coating quality.
Drying Time: The drying time of clear finishes is measured using the oven method to assess their application efficiency and coating quality.
Weather resistance: Use the artificial accelerated aging test to evaluate the weather resistance of the finish paint to evaluate its anti-oxidation, anti-ultraviolet and other characteristics under different climate conditions.
Chemical Resistance: The chemical resistance of a clear finish is evaluated using the Chemical Resistance Test to assess how well it will resist exposure to chemicals.
Abrasion Resistance: The abrasion resistance of a clear finish is assessed using an abrasion test to assess its ability to resist when subjected to abrasion.
Adhesion: The adhesion of the finish paint is measured using the cross-hatch method to assess the firmness of the coating.
Beichao reminds you: Different performance parameters may require different testing methods and equipment, and there may be some industry standards and specifications. For the performance testing of varnish topcoats, corresponding testing methods and standards should be selected according to actual needs.
