Graphene-containing roofing materials and related methods
Some embodiments of the present disclosure relate to a roofing material, wherein the roofing material may comprise a plurality of coated roofing granules, wherein each of the plurality of the coated roofing granules may comprise a roofing granule having an outer surface; and a granule coating, wherein the granule coating is disposed on at least a portion of the outer surface of the roofing granule, and wherein the granule coating comprises graphene. Some embodiments of the present disclosure relate to a roofing material, wherein the roofing material may further comprise a reflective base coating, wherein the reflective base coating is positioned between the outer surface of the roofing granule and the granule coating.
1. A roofing material, comprising:
a plurality of coated roofing granules, wherein each of the plurality of coated roofing granules comprises:
a roofing granule,
wherein the roofing granule having an outer surface;
a coating,
wherein the coating disposed on at least a portion of the outer surface of the roofing granule;
wherein the coating having an outer surface; and
a graphene particle layer,
wherein the graphene particle layer is composed of a plurality of graphene particles;
wherein the graphene particle layer is disposed on at least a portion of the outer surface of the coating.
2. The roofing material of claim 1 , wherein the graphene particle layer covers 25% to 95% of the outer surface of the coating.
3. The roofing material of claim 1 , wherein the graphene particle layer is directly exposed to an environment.
4. The roofing material of claim 1 , wherein the coating comprises at least one of a metal silicate binder, a phosphate binder, a fluoropolymer coating, an acrylic coating, a polyurethane coating, a sol-gel coating, a silica coating, or any combination thereof.
5. The roofing material of claim 1 , wherein the coating comprises at least one of a latent heat reactant, a dispersing agent, a curing agent, an accelerator, a viscosity modifier, a color pigment, or any combination thereof.
6. The roofing material of claim 1 , wherein the coating comprises a polymer.
7. The roofing material of claim 1 , wherein the coating covers 25% to 100% of the outer surface of the roofing granule.
8. The roofing material of claim 1 , wherein the roofing material has a CIELAB color value comprising an L* value of 50 or less.
9. The roofing material of claim 1 , wherein the roofing material has a CIELAB color value comprising an L* value range of 0<L*<40.
10. The roofing material of claim 1 , wherein a total solar reflectance of the plurality of coated roofing granules is at least 10% greater than a roofing granule control, wherein the roofing granule control does not comprise a graphene particle layer, wherein the total solar reflectance is measured via a spectrophotometer according to ASTM E903.
11. The roofing material of claim 1 , wherein each of the plurality of coated roofing granules further comprises:
a reflective base coating,
wherein the reflective base coating is positioned between the roofing granule and the coating.
12. The roofing material of claim 11 , wherein the reflective base coating comprises at least one of a reflective pigment, a transitional metal oxide, a cool pigment, a metallic pigment, a metallic particle, a mirrored pigment, a light scattering additive, an opacifier, a thin-film coated particle, or any combination thereof.
13. A roofing shingle comprising:
a substrate;
an asphalt filled coating on the substrate; and
a plurality of coated roofing granules disposed on the asphalt filled coating, wherein each of the plurality of coated roofing granules comprises:
a roofing granule,
wherein the roofing granule having an outer surface;
a coating,
wherein the coating disposed on at least a portion of the outer surface of the roofing granule;
wherein the coating having an outer surface; and
a graphene particle layer,
wherein the graphene particle layer is composed of a plurality of graphene particles;
wherein the graphene particle layer is disposed on at least a portion of the outer surface of the coating.
14. The roofing shingle of claim 13 , wherein the graphene particle layer covers 25% to 95% of the outer surface of the coating.
15. The roofing shingle of claim 13 , wherein the graphene particle layer is directly exposed to an environment.
16. The roofing shingle of claim 13 , wherein the coating comprises at least one of a metal silicate binder, a phosphate binder, a fluoropolymer coating, an acrylic coating, a polyurethane coating, a sol-gel coating, a silica coating, or any combination thereof.
17. The roofing shingle of claim 13 , wherein the roofing shingle having a CIELAB color value comprising an L* value range of 0<L*<40.
18. The roofing shingle of claim 13 , wherein a total solar reflectance of the roofing shingle is at least 10% greater than a roofing shingle control, wherein the roofing shingle control does not comprise a graphene particle layer, wherein the total solar reflectance is measured via a spectrophotometer according to ASTM E903.
19. The roofing shingle of claim 13 , wherein each of the plurality of coated roofing granules further comprises:
a reflective base coating,
wherein the reflective base coating is positioned between the outer surface of the roofing granule and the coating.
20. A method comprising:
obtaining a plurality of roofing granules;
obtaining a coating material;
obtaining a graphene composition,
wherein the graphene composition comprises a plurality of graphene particles;
applying the coating material to the plurality of roofing granules so as to form a plurality of coated roofing granules,
wherein the coating disposed on at least a portion of an outer surface of each of the plurality of roofing granules;
applying the graphene composition to the plurality of coated roofing granules such that a graphene particle layer covers at least a portion of an outer surface of the coating disposed on each the plurality of coated roofing granules,
wherein the graphene particle layer is composed of a plurality of graphene particles; and
heating the plurality of coated roofing granules to a first temperature.