Golf ball compositions with metamaterial
Compositions including a resiliency additive and golf ball components made from such compositions having a tailored Coefficient of Restitution are disclosed. The type and concentration of the constituents in the composition, including the resiliency additive, affects the Coefficient of Restitution of components made from the composition and, thus, can be used to produce a golf ball having desirable performance characteristics.
1. A golf ball, comprising:
a core; and
a cover layer disposed about the core and comprising a cover composition comprising a resiliency additive,
wherein the resiliency additive comprises a plurality of magnets and a polymeric network comprising a plurality of plates containing the plurality of magnets and a plurality of pores disposed between the plurality of plates.
2. The golf ball of claim 1 , wherein each of the plurality of plates is connected to one or more other plates of the plurality of plates by one or more ligaments.
3. The golf ball of claim 2 , wherein the plurality of plates comprise one or more cavities and the plurality of magnets are contained in the one or more cavities.
4. The golf ball of claim 3 , wherein the polymeric network comprises closed and open phases.
5. The golf ball of claim 4 , wherein the polymeric network is configured to transition between the open phase and the closed phase when struck by a golf club.
6. The golf ball of claim 1 , wherein the plurality of magnets comprises a first magnet and a second magnet, and wherein the first magnet and second magnet are configured to attract each other.
7. The golf ball of claim 1 , wherein the plurality of magnets comprises a first magnet and a second magnet, and wherein the first magnet and second magnet are configured to repel each other.
8. The golf ball of claim 1 , wherein each magnet in the plurality of magnets comprises a magnetic moment having a direction, and wherein the direction of the magnetic moment of each magnet extends substantially parallel to the magnetic moment of each other magnet.
9. The golf ball of claim 1 , wherein the core comprises a geometric center, wherein each magnet in the plurality of magnets comprises a magnetic moment having a direction, and wherein the direction of the magnetic moment of each magnet is substantially colinear with a line passing through the geometric center of the core.
10. The golf ball of claim 1 , wherein the resiliency additive is present in the cover composition in an amount of about 5 to about 50 percent by weight.
11. The golf ball of claim 1 , wherein the golf ball has a coefficient of restitution between about 0.700 and about 0.950.
12. The golf ball of claim 1 , wherein the golf ball has a coefficient of restitution between about 0.500 and about 0.700.
13. The golf ball of claim 1 , wherein the plurality of magnets comprises neodymium magnets.
14. A golf ball, comprising:
a core; and
a dual cover layer disposed about the core, the cover layer comprising:
an inner cover layer comprising a first cover composition comprising a first resiliency additive; and
an outer cover layer disposed over the inner cover layer and comprising a second cover composition,
wherein the first resiliency additive comprises a first plurality of magnets and a first polymeric network comprising a first plurality of plates containing the first plurality of magnets and a first plurality of pores disposed between the first plurality of plates.
15. The golf ball of claim 14 , wherein the second cover composition comprises a second resiliency additive, and wherein the second resiliency additive comprises a second plurality of magnets.
16. The golf ball of claim 15 , wherein the first resiliency additive comprises a first polymeric network comprising a second plurality of plates containing the second plurality of magnets and a second plurality of pores disposed between the second plurality of plates.
17. The golf ball of claim 16 , wherein at least one of the magnets in the first plurality of magnets and at least one of the magnets in the second plurality of magnets are configured to attract each other.
18. The golf ball of claim 16 , wherein at least one of the magnets in the first plurality of magnets and at least one of the magnets in the second plurality of magnets are configured to repel each other.
19. The golf ball of claim 14 , wherein the second cover composition comprises a magnetic shielding agent.
20. The golf ball of claim 15 , wherein the golf ball has a coefficient of restitution between about 0.700 and about 0.950.
21. The golf ball of claim 15 , wherein the golf ball has a coefficient of restitution between about 0.500 and about 0.700.