Solenoid low friction bearing liner
The present disclosure relates to a low friction bearing liner for a solenoid may include a low friction layer. The low friction layer may include a first fluoropolymer matrix component and a first thermoplastic filler component distributed throughout the first fluoropolymer matrix component. The content of the first fluoropolymer matrix component may be at least about 1 wt. % and not greater than about 99 wt. % for a total weight of the first low friction layer. The content of the first thermoplastic filler component may be at least about 1 wt. % and not greater than about 99 wt. % for a total weight of the first low friction layer.
1. A low friction bearing liner for a solenoid, the low friction bearing liner comprising a first low friction layer,
wherein the first low friction layer comprises a first fluoropolymer matrix component and a first thermoplastic filler component distributed throughout the first fluoropolymer matrix component,
wherein the content of the first fluoropolymer matrix component is at least about 80 wt. % and not greater than about 99 wt. % for a total weight of the first low friction layer,
wherein the content of the first thermoplastic filler component is at least about 1 wt. % and not greater than about 20 wt. % for a total weight of the first low friction layer, and
wherein the first thermoplastic filler comprises a polyimide (PI), a polyamide (PA), a polyamideimide (PAI), a polybenzimidazole (PBI), a polyether ether ketone (PEEK), an aromatic polyester, a polyphenylene sulfide (PPS), synthetic fibers, or any combination thereof.
2. The low friction bearing liner of claim 1 , the low friction bearing liner has a non-lubricated surface coefficient of friction of not greater than about 0.20.
3. The low friction bearing liner of claim 1 , wherein the first low friction layer has a non-lubricated surface coefficient of friction of not greater than about 0.20.
4. The low friction bearing liner of claim 1 , further comprising a wear rating of at least about 32,000, where the wear rating is equal to the number of rotations completed before failure in a Tribometer Test and failure is defined as a 50% increase in COF versus steady-state value during the Tribometer test.
5. The low friction bearing liner of claim 1 , wherein the first low friction layer further comprises a content ratio TFC-1 WC /FMC-1 WC of at least about 0.01 and not greater than about 100.
6. The low friction bearing liner of claim 1 , wherein the first fluoropolymer matrix component comprises at least one of a fluorinated ethylene propylene material, a perfluoroalkoxy alkane material, a modified PTFE material, or a combination thereof.
7. The low friction bearing liner of claim 1 , wherein the first low friction layer consists of a fluorinated ethylene propylene material.
8. The low friction bearing liner of claim 1 , wherein the first low friction layer consists of a polytetrafluoroethylene material.
9. The low friction bearing liner of claim 1 , wherein the first thermoplastic filler has a glass transition temperature of at least about 130° C. and not greater than about 240° C.
10. The low friction bearing liner of claim 1 , wherein the first low friction layer has a thickness of at least about 1 micron and not greater than about 125 microns.
11. A solenoid comprising:
a barrel;
an armature within the barrel; and
a low friction bearing liner disposed between an inner surface of the barrel and an outer surface of the armature, wherein the low friction bearing liner comprises a first low friction layer,
wherein the first low friction layer comprises a first fluoropolymer matrix component and a first thermoplastic filler component distributed throughout the first fluoropolymer matrix component,
wherein the content of the first fluoropolymer matrix component is at least about 80 wt. % and not greater than about 99 wt. % for a total weight of the first low friction layer, and
wherein the content of the first thermoplastic filler component is at least about 1 wt. % and not greater than about 20 wt. % for a total weight of the first low friction layer, and
wherein the first thermoplastic filler comprises a polyimide (PI), a polyamide (PA), a polyamideimide (PAI), a polybenzimidazole (PBI), a polyether ether ketone (PEEK), an aromatic polyester, a polyphenylene sulfide (PPS), synthetic fibers, or any combination thereof.
12. The solenoid of claim 11 , wherein the low friction bearing liner has a non-lubricated surface coefficient of friction of not greater than about 0.20.
13. The solenoid of claim 11 , wherein the first low friction layer has a non-lubricated surface coefficient of friction of not greater than about 0.20.
14. The solenoid of claim 11 , further comprising a wear rating of at least about 32,000, where the wear rating is equal to the number of rotations completed before failure in a Tribometer Test and failure is defined as a 50% increase in COF versus steady-state value during the Tribometer test.
15. The solenoid of claim 11 , wherein the first low friction layer further comprises a content ratio TFC-1 WC /FMC-1 WC of at least about 0.01 and not greater than about 100.
16. The solenoid of claim 11 , wherein the first fluoropolymer matrix component comprises at least one of a fluorinated ethylene propylene material, a perfluoroalkoxy alkane material, a modified PTFE material, or a combination thereof.
17. The solenoid of claim 11 , wherein the first low friction layer consists of a fluorinated ethylene propylene material.
18. The solenoid of claim 11 , wherein the first low friction layer consists of a polytetrafluoroethylene material.
19. The solenoid of claim 11 , wherein the first thermoplastic filler has a glass transition temperature of at least about 130° C. and not greater than about 240° C.
20. The solenoid of claim 11 , wherein the first low friction layer has a thickness of at least about 1 micron and not greater than about 125 microns.