Polymer derived ceramic effects particles, uses and methods of making
A polysilocarb effect pigments, uncoated and coated, that exhibit among other things optical properties such as interference, shine, shimmer and sparkle. Pastes and coating including these polysilocarb effect pigments.
1. A thin ceramic effects pigment flake, the flake comprising an amorphous ceramic polysilocarb; wherein the flake defines a thickness and a surface, wherein the surface defines a longest dimension, and wherein the longest dimension is less than 500 μm.
2. The flake of claim 1 , whereby upon exposure to sunlight the flake exhibits an optical effect selected from the group consisting of reflectance, refraction, opalescence, shine, twinkle and sparkle.
3. The flake of claim 1 , whereby upon exposure to sunlight exhibits an optical effect selected from the group consisting of interference, amplification and cancellation.
4. A plurality of ceramic effect pigment thin flakes, comprising a polysilocarb based ceramic, the flakes having an average thickness of about 1.0-1.3 microns; and 80% or more of the flakes having a particle size distribution of from about 1700-150 μm and 20% or less of the flakes having a particle size distribution of <150 μm.
5. The flakes of claim 4 , whereby upon exposure to sunlight exhibit an optical effect selected from the group consisting of sparkle, metallic, pearlescence, shine, shimmer, interference, amplification and cancellation.
6. The flakes of claim 4 , wherein the ceramic polysilocarb is amorphous.
7. The flakes of claim 4 , comprising a metal oxide coating over the ceramic polysilocarb.
8. The flakes of claim 5 , wherein the ceramic polysilocarb is amorphous.
9. The flakes of claim 5 , comprising a metal oxide coating over the ceramic polysilocarb.
10. The flake of claim 1 , wherein the flake is planar.
11. The flakes of claim 4 , wherein the flakes are planar.
12. The flakes of claim 4 , wherein the flakes are corn flake shaped.
13. A plurality of ceramic effect pigment thin flakes, comprising a polysilocarb based ceramic, the flakes having an average thickness of about 0.8-1.0 μm, and a particle size distribution of about D10 6.00 μm, D50 11.0-14.50 μm, and D90 21.00-25.00 μm; and a sieve residue 45 μm less than 2.00.
14. The flakes of claim 13 , whereby upon exposure to sunlight exhibit an optical effect selected from the group consisting of sparkle, metallic, pearlescence, shine, shimmer, interference, amplification and cancellation.
15. The flakes of claim 13 , wherein the ceramic polysilocarb is amorphous.
16. The flakes of claim 13 , comprising a metal oxide coating over the ceramic polysilocarb.
17. The flakes of claim 14 , wherein the ceramic polysilocarb is amorphous.
18. The flakes of claim 13 , comprising a metal oxide coating over the ceramic polysilocarb.