Composition, method and system for balancing a rotary system
Compositions for balancing a rotary system are disclosed having hydrophobic particles distributed in thixotropic balancing substance. Further disclosed are methods for balancing a rotary system and rotary systems using the composition.
1. A rotary system ( 200 ) for reducing vibration in said rotary system ( 200 ) comprising a rotational element ( 110 ), wherein the rotational element comprises a chamber ( 120 ) having a fulcrum on a rotational axis ( 150 ) of said rotational element ( 110 ) comprising a circumferential balancing area ( 130 ) and being partially filled with an amount of a composition ( 240 ) comprising an amount of a thixotropic balancing substance and an amount of hydrophobic particles distributed in said amount of said thixotropic balancing substance,
wherein said hydrophobic particles have
surfaces comprising fluorocarbon,
cores comprising a fluorocarbon, a silicone, a metal, or carbon, or
a specific surface area in the range from approximately 2 m 2 /g to approximately 20 m 2 /g.
2. The rotary system ( 200 ) of claim 1 , wherein:
said amount of said thixotropic balancing substance is in the range from approximately 90% by weight to approximately 99% by weight and said amount of said hydrophobic particles is in the range from approximately 10% by weight to approximately 1% by weight or
said hydrophobic particles have sizes in the range from approximately 1 nm to approximately 100 μm;
said hydrophobic particles have cores comprising a fluorocarbon, a silicone, a metal, or carbon;
said thixotropic balancing substance has a density and said hydrophobic particles have a density greater than the density of said thixotropic balancing substance;
said hydrophobic particles have a density in the range from approximately 1000 kg/m 3 to approximately 5000 kg/m 3 ; or
a combination of two or more of these features.
3. The rotary system ( 200 ) of claim 1 , wherein:
said rotary system ( 200 ) is comprised in a vehicle and, optionally, said rotary system ( 200 ) is a wheel, an engine system or a transmission system of said vehicle;
said rotary system ( 200 ) is comprised in an aircraft and, optionally, said rotary system ( 200 ) is an engine system or blades 30 of said aircraft;
said rotary system ( 200 ) is comprised in a watercraft and, optionally, said rotary system ( 200 ) is an engine system or a transmission system of said watercraft; or
said rotary system ( 200 ) is comprised in an article processing machine and, optionally, said rotary system ( 200 ) is an article-receiving drum of said article processing machine.
4. The rotary system ( 200 ) of claim 1 , wherein said hydrophobic particles have surfaces comprising fluorocarbon and the fluorocarbon is a fluoropolymer.
5. The rotary system ( 200 ) of claim 4 , wherein the fluoropolymer is polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), perfluoroalkoxy (PFA) or ethylene-tetrafluoroethylene copolymer (ETFE).
6. The rotary system ( 200 ) of claim 4 , wherein the fluoropolymer is tetrafluoroethylene hexafluoropropylene copolymer.
7. The rotary system ( 200 ) of claim 1 , wherein said hydrophobic particles have cores comprising a fluorocarbon, a silicone, a metal, or carbon.
8. The rotary system ( 200 ) of claim 4 , wherein said hydrophobic particles have cores comprising a fluorocarbon, a silicone, a metal, or carbon.
9. The rotary system ( 200 ) of claim 5 , wherein said hydrophobic particles have cores comprising a fluorocarbon, a silicone, a metal, or carbon.
10. The rotary system ( 200 ) of claim 1 , wherein
said amount of said thixotropic balancing substance ranges from 95% by weight to approximately 98% by weight; and
said amount of said hydrophobic particles ranges from 5% by weight to 2% by weight.
11. The rotary system ( 200 ) of claim 4 , wherein
said amount of said thixotropic balancing substance ranges from 95% by weight to approximately 98% by weight; and
said amount of said hydrophobic particles ranges from 5% by weight to 2% by weight.
12. The rotary system ( 200 ) of claim 1 , wherein:
sizes of said hydrophobic particles range from approximately 10 nm to approximately 50 μm; or
a specific surface area of said hydrophobic particles ranges from approximately 2 m 2 /g to approximately 20 m 2 /g; or
both.
13. The rotary system ( 200 ) of claim 4 , wherein:
sizes of said hydrophobic particles range from approximately 10 nm to approximately 50 μm; or
a specific surface area of said hydrophobic particles ranges from approximately 2 m 2 /g to approximately 20 m 2 /g; or
both.
14. The rotary system ( 200 ) of claim 1 , wherein:
a density of said hydrophobic particles is higher than a density of said thixotropic balancing substance;
the density of said hydrophobic particles ranges from approximately 1000 kg/m 3 to approximately 5000 kg/m 3 ; or
both.
15. The rotary system ( 200 ) of claim 4 , wherein:
a density of said hydrophobic particles is higher than a density of said thixotropic balancing substance;
the density of said hydrophobic particles ranges from approximately 1000 kg/m 3 to approximately 5000 kg/m 3 ; or
both.
16. A method of reducing vibration in a rotary system ( 200 ) comprising:
distributing an amount of a composition ( 240 ) comprising an amount of a thixotropic balancing substance and an amount of hydrophobic particles distributed in said amount of said thixotropic balancing substance; and
providing a rotational element ( 110 ) comprising a chamber ( 120 ) having a fulcrum on a rotational axis ( 150 ) of said rotational element ( 110 ) comprising a circumferential balancing area ( 130 ) and being partially filled with at least a portion of said amount of said composition ( 240 ),
wherein the hydrophobic particles have
surfaces comprising fluorocarbon,
cores comprising a fluorocarbon, a silicone, a metal, or carbon, or
a specific surface area in the range from approximately 2 m 2 /g to approximately 20 m 2 /g.
17. The method of claim 16 further comprising:
rotating said rotational element ( 110 ) about said rotational axis ( 150 ), such that said composition ( 240 ) liquefies and distributes itself along said circumferential balancing area ( 130 ), and an imbalance of said rotational element ( 110 ) is reduced.
18. The method of claim 16 , wherein:
said amount of said thixotropic balancing substance is in the range from approximately 90% by weight to approximately 99% by weight and said amount of said hydrophobic particles is in the range from approximately 10% by weight to approximately 1% by weight;
said hydrophobic particles have sizes in the range from approximately 1 nm to approximately 100 μm;
said hydrophobic particles have cores comprising a fluorocarbon, a silicone, a metal, or carbon;
said the thixotropic balancing substance has a density and the hydrophobic particles have a density greater than the density of said thixotropic balancing substance;
aid hydrophobic particles have a density in the range from approximately 1000 kg/m 3 to approximately 5000 kg/m 3 ; or
a combination of two or more of these features.
19. The method of claim 16 , wherein:
said rotary system ( 200 ) is comprised in a vehicle and, optionally, said rotary system ( 200 ) is a wheel, an engine system or a transmission system of said vehicle;
said rotary system ( 200 ) is comprised in an aircraft, and, optionally, said rotary system ( 200 ) is an engine system or blades of said aircraft;
said rotary system ( 200 ) is comprised in a watercraft and, optionally, said rotary system ( 200 ) is an engine system or a
transmission system of said aircraft; or
said rotary system ( 200 ) is comprised in an article processing machine and, optionally, said rotary system ( 200 ) is an article-receiving drum of said article processing machine.