CN1473865A - Friction material of polytetrafluoroethylene for supersonic motor - Google Patents
Friction material of polytetrafluoroethylene for supersonic motor Download PDFInfo
- Publication number
- CN1473865A CN1473865A CNA031325556A CN03132555A CN1473865A CN 1473865 A CN1473865 A CN 1473865A CN A031325556 A CNA031325556 A CN A031325556A CN 03132555 A CN03132555 A CN 03132555A CN 1473865 A CN1473865 A CN 1473865A
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- rare earth
- ptfe
- friction materials
- polytetrafluoroethylene
- ultrasonic motor
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Abstract
The present invention relates to a kind of PTFE composite material modified with stuffing for supersonic motor. The composite material includes nano diamond 0.5-15 wt% except PTFE self-lubricating base material. The self-lubricating performance of the composite material can lower noise, result in dynamic friction coefficient approaching static one, stable heat and chemical properties and easy machining, and fulfill the requirement as friction material for supersonic motor. In order to increase the hardness of the friction material, nano diamond is added into PTFE base material. The present invention has the advantages of great stall moment, high rotation speed, low noise and less wear, and is one kind of excellent friction material for supersonic motor.
Description
Technical field: the present invention relates to the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor, a kind ofly more precisely use filler modified PTFE matrix material.
Background technology: at present, ultrasonic motor friction material commonly used mainly contains nbr modified phenolic resins base frication material, aromatic polyamides base frication material and sticking method and the bonding method friction materials etc. of being coated with.But shortcomings such as these material ubiquity wear rates are big, noise height, the stalling torque of some friction materials is also very low, can not satisfy the service requirements of ultrasonic motor fully.
Summary of the invention: the purpose of this invention is to provide a kind of friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor, the characteristics that it has, and stalling torque is big, rotating speed is high, noise is low, wearing and tearing are little.The present invention comprises Nano diamond and tetrafluoroethylene, and they are realized by following mass percent: Nano diamond 0.5～15%, surplus are tetrafluoroethylene; Described friction materials is realized by following mass percent: Nano diamond 1～10%, surplus are tetrafluoroethylene; Described friction materials is realized by following mass percent: Nano diamond 5%, surplus are tetrafluoroethylene.Described Nano diamond is black powder or ashes.The present invention has selected self-lubricating material PTFE as matrix, and the self lubricity of this material can reduce noise, and advantages such as static and dynamic friction coefficient is approaching, thermochemical property is stable, easy processing have satisfied the requirement of ultrasonic motor to friction materials just.For increasing the hardness of friction materials, in the PTFE matrix, dosed Nano diamond.The present invention has the advantage that stalling torque is big, rotating speed is high, noise is low, wearing and tearing are little.It is a kind of ultrasonic motor friction material of excellent property.
Embodiment one: present embodiment is mixed by Nano diamond, tetrafluoroethylene, by mass percentage: Nano diamond 12%, tetrafluoroethylene 88%.
Embodiment two: the difference of present embodiment and embodiment one is that it has increased bronze powder, and by mass percentage, they are: Nano diamond 0.5～15%, bronze powder 1～30%, surplus are tetrafluoroethylene.Increase bronze powder in the present embodiment, can effectively improve the heat conductivility of friction materials.
Embodiment three: the difference of present embodiment and embodiment two is that it has increased rare earth again, and they are by mass percentage: Nano diamond 1.2～14%, bronze powder 2～25%, rare earth 1～50%, surplus are polytetrafluoroethylenes.The described rare earth of present embodiment is a kind of in rare-earth mineral, mixed rare earth compound or the single rare earth compound, or the mixture of any two or three in them; Described rare-earth mineral comprises rare-earth original ore, rare earth ore concentrate; Described mixed rare earth compound comprises rare earth oxide, rare earth fluoride, rare earth chloride, rare earth hydrate, carbonated rare earth; Described single rare earth compound comprises lanthanum trioxide, cerium oxide, Praseodymium trioxide, Neodymium trioxide, Samarium trioxide, yttrium oxide; Lanthanum fluoride, cerium fluoride, praseodymium fluoride, neodymium fluoride, samaric fluoride, yttrium fluoride; Lanthanum trichloride, Cerium II Chloride, praseodymium chloride, Neodymium trichloride, samarium trichloride, Yttrium trichloride; Lanthanum hydroxide, cerous hydroxide, praseodymium hydroxide, neodymium hydroxide Neodymium trihydroxide, samaric hydroxide, yttrium hydroxide; Phosbloc, cerous carbonate, praseodymium carbonate, neodymium carbonate, samaric carbonate, yttrium carbonate.The rare earth that increases in the present embodiment can effectively improve the wear resisting property of friction materials.
Preparation method of the present invention is: at first nano-diamond powder is ground out with mortar, it is even to put into stirrer for mixing with the above material then, mix the back and put into mould according to the material that the material require that will make weighs up required quality, pressure coldmoulding with 50～70MPa, pressurize 10～15 minutes, the sintering process sintering according to the PTFE matrix material after taking out gets final product.
Claims (9)
1, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor is characterized in that it comprises Nano diamond and tetrafluoroethylene, and they are realized by following mass percent: Nano diamond 0.5～15%, surplus are tetrafluoroethylene.
2, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor according to claim 1, it is characterized in that described friction materials realizes by following mass percent: Nano diamond 1～10%, surplus are tetrafluoroethylene.
3, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor according to claim 1, it is characterized in that described friction materials realizes by following mass percent: Nano diamond 5%, surplus are tetrafluoroethylene.
4, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor according to claim 1 is characterized in that it has increased bronze powder, and by mass percentage, they are: Nano diamond 0.5～15%, bronze powder 1～30%, surplus are tetrafluoroethylene.
5, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor according to claim 1, it is characterized in that it has increased rare earth again, they are by mass percentage: Nano diamond 1.2～14%, bronze powder 2～25%, rare earth 1～50%, surplus are polytetrafluoroethylenes.
6, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor according to claim 5 is characterized in that described rare earth is a kind of in rare-earth mineral, mixed rare earth compound or the single rare earth compound, or the mixture of any two or three in them.
7, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor according to claim 6 is characterized in that described rare-earth mineral comprises rare-earth original ore, rare earth ore concentrate.
8, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor according to claim 6 is characterized in that described mixed rare earth compound comprises rare earth oxide, rare earth fluoride, rare earth chloride, rare earth hydrate, carbonated rare earth.
9, the friction materials of polytetrafluoroethylene (PTFE) base ultrasonic motor according to claim 6 is characterized in that described single rare earth compound comprises lanthanum trioxide, cerium oxide, Praseodymium trioxide, Neodymium trioxide, Samarium trioxide, yttrium oxide; Lanthanum fluoride, cerium fluoride, praseodymium fluoride, neodymium fluoride, samaric fluoride, yttrium fluoride; Lanthanum trichloride, Cerium II Chloride, praseodymium chloride, Neodymium trichloride, samarium trichloride, Yttrium trichloride; Lanthanum hydroxide, cerous hydroxide, praseodymium hydroxide, neodymium hydroxide Neodymium trihydroxide, samaric hydroxide, yttrium hydroxide; Phosbloc, cerous carbonate, praseodymium carbonate, neodymium carbonate, samaric carbonate, yttrium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031325556A CN1186372C (en) | 2003-08-07 | 2003-08-07 | Friction material of polytetrafluoroethylene for supersonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031325556A CN1186372C (en) | 2003-08-07 | 2003-08-07 | Friction material of polytetrafluoroethylene for supersonic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1473865A true CN1473865A (en) | 2004-02-11 |
| CN1186372C CN1186372C (en) | 2005-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031325556A Expired - Fee Related CN1186372C (en) | 2003-08-07 | 2003-08-07 | Friction material of polytetrafluoroethylene for supersonic motor |
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| CN (1) | CN1186372C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302207C (en) * | 2004-04-06 | 2007-02-28 | 胡世璇 | Hydraulic motor using self-lubricating composite material as friction assistant |
| CN101309056B (en) * | 2008-05-30 | 2012-03-07 | 哈尔滨工业大学 | Preparing method of antisotropic friction plate of ultrasonic motor and special preparing apparatus thereof |
| CN105897046A (en) * | 2016-04-18 | 2016-08-24 | 南京航空航天大学 | Ultrasonic wave motor rotor surface texture and production method thereof |
| CN105909962A (en) * | 2016-04-15 | 2016-08-31 | 哈尔滨工业大学 | Membrane-grease composite lubrication method |
| CN105909963A (en) * | 2016-04-15 | 2016-08-31 | 哈尔滨工业大学 | Membrane-oil composite lubrication method |
| CN108696177A (en) * | 2018-07-02 | 2018-10-23 | 南京航空航天大学 | A kind of light-weighted method of realization ultrasound electric machine |
| CN112940419A (en) * | 2020-08-26 | 2021-06-11 | 中国科学院兰州化学物理研究所 | Method for modifying polytetrafluoroethylene wear-resistant material through cooperation of multi-scale organic/inorganic filler |
| CN114539692A (en) * | 2022-02-10 | 2022-05-27 | 北京石墨烯技术研究院有限公司 | Carbon nanohorn modified polytetrafluoroethylene, preparation method thereof and sealing element |
-
2003
- 2003-08-07 CN CNB031325556A patent/CN1186372C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302207C (en) * | 2004-04-06 | 2007-02-28 | 胡世璇 | Hydraulic motor using self-lubricating composite material as friction assistant |
| CN101309056B (en) * | 2008-05-30 | 2012-03-07 | 哈尔滨工业大学 | Preparing method of antisotropic friction plate of ultrasonic motor and special preparing apparatus thereof |
| CN105909962A (en) * | 2016-04-15 | 2016-08-31 | 哈尔滨工业大学 | Membrane-grease composite lubrication method |
| CN105909963A (en) * | 2016-04-15 | 2016-08-31 | 哈尔滨工业大学 | Membrane-oil composite lubrication method |
| CN105897046A (en) * | 2016-04-18 | 2016-08-24 | 南京航空航天大学 | Ultrasonic wave motor rotor surface texture and production method thereof |
| CN108696177A (en) * | 2018-07-02 | 2018-10-23 | 南京航空航天大学 | A kind of light-weighted method of realization ultrasound electric machine |
| CN112940419A (en) * | 2020-08-26 | 2021-06-11 | 中国科学院兰州化学物理研究所 | Method for modifying polytetrafluoroethylene wear-resistant material through cooperation of multi-scale organic/inorganic filler |
| CN112940419B (en) * | 2020-08-26 | 2022-08-30 | 中国科学院兰州化学物理研究所 | Method for cooperatively modifying polytetrafluoroethylene wear-resistant material by multi-scale organic/inorganic filler |
| CN114539692A (en) * | 2022-02-10 | 2022-05-27 | 北京石墨烯技术研究院有限公司 | Carbon nanohorn modified polytetrafluoroethylene, preparation method thereof and sealing element |
| CN114539692B (en) * | 2022-02-10 | 2023-10-17 | 北京石墨烯技术研究院有限公司 | Carbon nanohorn modified polytetrafluoroethylene, preparation method thereof and sealing element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1186372C (en) | 2005-01-26 |
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Granted publication date: 20050126 |