Solar active powder for fusion powder coating
A fusion coating powder useful in forming a coating by fusion of the powder comprising a solar active or a photovoltaic pigment in combination with a resin including a conductive resin and a device for generating electric energy from solar or photo illumination comprising an electrode, a first powder coated layer of an absorptive pigment and a resin, a second powder coated layer of the aforementioned solar active powder, and a protective layer.
1. A fusion coating powder composition comprising a photoactive material including phthalocyanine and a conductive resin, wherein the fusion coating powder composition produces electricity upon exposure to light when the powder is heated to form a fused, continuous film.
2. The fusion coating powder composition of claim 1 wherein the fusion coating powder composition is formed by blending the photoactive material and the conductive resin, extruding the blend and grinding the extruded blend to form the fusion coating powder composition.
3. The fusion coating powder composition of claim 1 wherein the photoactive material includes a strontium phosphor.
4. The fusion coating powder composition of claim 1 wherein the conductive resin has a glass transition temperature (Tg) greater than about 60° C. with differential scanning calorimetry (DSC).
5. The fusion coating powder composition of claim 1 wherein the conductive resin has a hydroxyl number between 40 to 45 and a hydroxyl equivalent weight between 1200 and 1403.
6. The fusion coating powder composition of claim 1 wherein the conductive resin is a phenolic or a conjugated polymer, a polymer containing a conductive pigment, an acrylate resin, or combinations thereof.
7. The fusion coating powder composition of claim 1 wherein the photoactive material includes a solar nano dot.
8. The fusion coating powder composition of claim 1 wherein the fusion coating powder composition further comprises an adsorptive pigment.
9. The fusion coating powder composition of claim 8 wherein the adsorptive pigment is titanium dioxide.
10. The fusion coating powder composition of claim 1 wherein the photoactive material includes a semiconductor.
11. The fusion coating powder composition of claim 9 wherein the semiconductor is gallium-arsenide.
12. The fusion coating powder composition of claim 1 wherein the fusion coating powder composition has the following composition:
The conductive resin
55.8 wt. %
Absorptive pigments
3.5 wt. %
The photoactive material
4.0 wt. %
Titanium dioxide
15.0 wt. %
A polymeric isocyanurate curative
21.7 wt. %.
13. The fusion coating powder composition of claim 1 wherein the fusion coating powder composition has an average particle size between 25 and 35 micrometers.
14. The fusion coating powder composition of claim 1 wherein the phthalocyanine is magnesium phthalocyanine coated onto glass flakes.
15. A fused, continuous film comprising a plurality of layers wherein a first layer comprises the fusion coating powder composition of claim 1 with a protective layer positioned adjacent to the first layer.
16. A fused, continuous film comprising a plurality of layers wherein a first layer comprises the fusion coating powder composition of claim 1 with an absorptive layer positioned adjacent to the first layer.
17. The film of claim 15 further comprising an absorptive layer proximate to the first layer but on an opposite of the first layer in comparison to the protective layer.