Application of the TEL Formula Guide in lead-free chromadizing of paint
Significant problems with coating hiding power occur in the yellow range, so the principle of using lemon yellow RAL 1012 is illustrated as an example. Table 4 compares automotive OEM paint and trim paint formulations with lead-containing formulations. In order to achieve the hiding power required for this hue, a relatively large amount of inorganic pigments (70%) is added, that is, the color saturation of RAL 1012 is not high. High-quality automotive paint formulations cost several times more than lead-based formulations, but lead-free and lead-containing paints are comparable in decorative paint. The advantage of high-quality lead-free formulations is better weather and chemical resistance. Table 4 RAL 1012 lemon yellow pigment formula and performance comparison.
- 1Summary of determination methods for hiding power of coatings
- 2Pigment hiding power
- 3Determination of Coating hiding power
- 4GB/T 23981.2-2023: Paints and varnishes - Determination of hiding power - Part 2: Checkerboard method - Interpretation
- 5Concept, influencing factors and determination method of Coating hiding power
- 6Mayer Rods: The right-hand man for hiding power tests
- 7Coating performance testing: ensuring the efficiency and mass of the painting process
- 8Coating hiding power measurement
- 9Application of paint film Applicator in hiding power test
