Graphene core for a golf ball
A golf ball with a core comprising polybutadiene and graphene is disclosed herein. The golf ball has a single core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an inner core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an outer core comprising polybutadiene and graphene.
1. A golf ball comprising:
an inner core comprising a polybutadiene material;
an outer core comprising polybutadiene material and a graphene material in an amount ranging from 0.1 to 5.0 weight percent of the outer core, wherein the outer core has a flexural modulus ranging from 80 MPa to 95 MPa; and
a cover layer disposed over the outer core, the cover layer composed of an ionomer material;
wherein a dual core comprising the inner core and the outer core has a compression value ranging from 40 to 55.
2. The golf ball according to claim 1 wherein the graphene material ranges from 0.4 to 2.5 weight percent of the outer core.
3. The golf ball according to claim 1 wherein the graphene material ranges from 0.6 to 1.5 weight percent of the outer core.
4. The golf ball according to claim 1 further comprising:
an inner mantle layer disposed over the outer core, the inner mantle layer having a thickness ranging from 0.03 inch to 0.09 inch, the inner mantle layer composed of an ionomer material, the inner mantle layer material having a plaque Shore D hardness ranging from 34 to 55;
an outer mantle layer disposed over the inner mantle layer, the outer mantle layer having a thickness ranging from 0.025 inch to 0.050 inch;
and
wherein the cover layer is disposed over the outer mantle layer, the cover layer has a thickness ranging from 0.025 inch to 0.040 inch;
wherein the cover layer has a lower Shore D hardness than the outer mantle layer, the outer mantle layer has a higher Shore D hardness than the inner mantle layer, the outer core has a higher Shore D hardness than the inner mantle layer and the inner core.
5. The golf ball according to claim 1 further comprising:
an inner mantle layer disposed over the outer core, the inner mantle layer having a thickness ranging from 0.030 inch to 0.090 inch, the inner mantle layer material having a plaque Shore D hardness ranging from 30 to 50;
an outer mantle layer disposed over the inner mantle layer, the outer mantle layer having a thickness ranging from 0.025 inch to 0.070 inch, the outer mantle layer material having a plaque Shore D hardness ranging from 50 to 71, wherein the inner mantle is thicker than the outer mantle, and the outer mantle is harder than the inner mantle; and
wherein the cover layer is disposed over the outer mantle layer, the cover layer having a thickness ranging from 0.025 inch to 0.050 inch, wherein the cover layer has a Shore D hardness less than the hardness of the outer mantle layer, the outer mantle layer has a higher Shore D hardness than the inner mantle layer, the outer core has a higher Shore D hardness than the inner mantle layer and the inner core.
6. The golf ball according to claim 1 further comprising:
an inner mantle layer disposed over the outer core, the inner mantle layer having a thickness ranging from 0.070 inch to 0.090 inch, the inner mantle layer composed of an ionomer material, the inner mantle layer material having a plaque Shore D hardness ranging from 36 to 44;
an outer mantle layer disposed over the inner mantle layer, the outer mantle layer having a thickness ranging from 0.025 inch to 0.040 inch, the outer mantle layer composed of an ionomer material, the outer mantle layer material having a plaque Shore D hardness ranging from 65 to 71; and
wherein the cover layer is disposed over the outer mantle layer, the cover layer having a thickness ranging from 0.025 inch to 0.040 inch;
wherein the cover layer has a lower Shore D hardness than the outer mantle layer, the outer mantle layer has a higher Shore D hardness than the inner mantle layer, the outer core has a higher Shore D hardness than the inner mantle layer and the inner core.
7. The golf ball according to claim 1 wherein the graphene material has a surface area ranging from 400 m 2 /g to 800 m 2 /g.
8. The golf ball according to claim 1 further comprising:
an inner mantle layer disposed over the outer core, the inner mantle layer having a thickness ranging from 0.030 inch to 0.050 inch, the inner mantle layer material having a plaque Shore D hardness ranging from 30 to 40, the inner mantle layer composed of an ionomer material;
a first center mantle layer disposed over the inner mantle layer, the first center mantle layer having a thickness ranging from 0.030 inch to 0.050 inch, the first center mantle layer material having a plaque Shore D hardness ranging from 40 to 55, the first center mantle layer composed of a fully neutralized polymer material;
a second center mantle layer disposed over the second center mantle layer, the second center mantle layer having a thickness ranging from 0.030 inch to 0.050 inch, the second center mantle layer material having a plaque Shore D hardness ranging from 45 to 55, the second center mantle layer composed of a fully neutralized polymer material;
an outer mantle layer disposed over the second center mantle layer, the outer mantle layer having a thickness ranging from 0.030 inch to 0.050 inch, the outer mantle layer composed of a blend of ionomers, the outer mantle layer material having a plaque Shore D hardness ranging from 60 to 75; and
wherein the cover layer is disposed over the outer mantle layer, the cover layer having a thickness ranging from 0.025 inch to 0.040 inch.
9. The golf ball according to claim 1 wherein the outer core has a tensile modulus ranging from 8 MPa to 10 MPa.
10. The golf ball according to claim 1 wherein the graphene material has a surface area ranging from 15 m 2 /g to 50 m 2 /g.
11. The golf ball according to claim 1 wherein the graphene material has a surface area ranging from 300 m 2 /g to 400 m 2 /g.
12. A golf ball comprising:
an inner core comprising a polybutadiene and a graphene material in an amount ranging from 0.1 to 5.0 weight percent of the inner core;
an outer core comprising a polybutadiene and a graphene material in an amount ranging from 0.1 to 5.0 weight percent of the outer core, wherein the outer core has a flexural modulus ranging from 80 MPa to 95 MPa;
a mantle layer; and
a cover composed of a thermoplastic polyurethane material and having a Shore A hardness less than 100;
wherein a core comprising the inner core and the outer core has a compression value ranging from 40 to 55.
13. The golf ball according to claim 12 wherein the mantle layer comprises an inner mantle layer and an outer mantle layer.
14. The golf ball according to claim 12 wherein the graphene material in the outer core ranges from 0.4 to 2.5 weight percent of the outer core, and wherein the graphene material in the inner core ranges from 0.4 to 2.5 weight percent of the inner core.
15. The golf ball according to claim 12 wherein the outer core has a tensile modulus ranging from 8 MPa to 10 MPa.
16. The golf ball according to claim 12 wherein the graphene material has a surface area ranging from 15 m 2 /g to 50 m 2 /g.
17. The golf ball according to claim 12 wherein the graphene material has a surface area ranging from 300 m 2 /g to 400 m 2 /g.
18. The golf ball according to claim 12 wherein the graphene material has a surface area ranging from 400 m 2 /g to 800 m 2 /g.