CN1186827A - Polyimide self lubricating composite material - Google Patents
Polyimide self lubricating composite material Download PDFInfo
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- CN1186827A CN1186827A CN96118938A CN96118938A CN1186827A CN 1186827 A CN1186827 A CN 1186827A CN 96118938 A CN96118938 A CN 96118938A CN 96118938 A CN96118938 A CN 96118938A CN 1186827 A CN1186827 A CN 1186827A
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- composite material
- polyimide
- graphite
- mpa
- lubricating composite
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Abstract
The composite polyimide material is used as friction material, and it is prepared by filling modifying molybdenum disulfide and/or graphite, Cu2O and BaSO4 and thermal pressing at 340-380 deg.c and 50-100 MPa for 0.5-1 hr. It has friction coefficient of 0.10-0.23, abrasion tate of 680-1210 atto cu m/N.m, Brinell hardness 284-345 MPa and bending strength 93-207 MPa.
Description
The present invention relates to a kind of polyimide self lubricating composite material.
Polyimide is good heat resistance (530～550 ℃ of heat decomposition temperatures) not only, also has excellent comprehensive performances.Its heat-resisting and radiation-resistant property is best in the macromolecular material of present suitability for industrialized production.Have outstanding dielectric properties, mechanical property, radiation-resistant property, firing resistance, wear resisting property, product size stability, organic solvent-resistant under the high temperature, and low-temperature performance is good, can be at-180～230 ℃ of following life-time service.Thermal expansivity is extremely low, and dimensional stabilizing is a kind of good polymer-based self-lubricating material matrix.Especially under the situation about can't use in high temperature, very low temperature, high vacuum, the occasion that chemical mediator is arranged and lubricating oil inefficacy, this material is suitable for especially slide unit.But, still need further improve its friction and wear behavior in actual applications as self-lubricating material.
The object of the present invention is to provide a kind of new polymers based self lubricated composite material, have low friction, wear-resistant, high temperature resistant, and good mechanical property is arranged, can be used as friction means.
The present invention realizes by following measure:
The present invention is many components, mainly consists of (volumn concentration):
ODPA-M type polyimide 60～85%
Polyamidoimide 5～20%
MoS
2 5～35％
Graphite 5～10%
Tetrafluoroethylene 2～20%
Cu
2O 2～15％
BaSO
4 2～10％
ODPA-M type polyimide among the present invention is a particulate mold pressing resin powder, and granularity is no more than 200 orders; Polyamidoimide (glue solid content 26%); Molybdenumdisulphide is handled through oil removing and polyamidoimide parcel, and granularity is no more than 400 orders; The granularity of graphite is no more than 400 orders; The granularity of tetrafluoroethylene is no more than 65 orders; Cu
2O, BaSO
4Granularity be no more than 200 orders.
The present invention is prepared by the following method:
Earlier pretreated raw material is weighed up by proportioning, with mixer each component is mixed, and it is following dry 1 hour in 120 ℃ ± 5 ℃ in vacuum drying oven, add batch mixing in the metal die equably, at room temperature give moulding (pressure is 50-100MPa), in 340-380 ℃ of following heat-insulation pressure keeping 30-60 minute, cooling can get the self-lubricating material blank after the demoulding again.
Fig. 1 is a process flow sheet of the present invention, is followed successively by batch mixing, drying, colds pressing, sintering, pressurize, cooling, the demoulding, processing.
The fundamental property of material of the present invention is as follows:
The fundamental property project unit performance remarks outward appearance black of table 1. material, no significant defect visual inspection density g/cm
31.44-2.07 flexural strength MPa 93-207 1 Brinell hardness MPa 284-345 2 thermal expansivity * 10
-5℃
-12.16-4.57 ℃ frictional coefficient 0.10-0.23 3 abrasion resistances * 10, room temperature～200
-16m
3/ N.m 6.8-12.1 annotates: 1. flexural strength: GB GB1042-79
2. hardness: GB HG2-168-65
3.MM-200 type ring-piece formula wear testing machine; GB GB3960-83,
Antithesis is a copper ring, rotating speed 400rpm, load 196N.
Embodiment 1: polyimide 76% by weight percentage, graphite 16%, molybdenumdisulphide 8% batching is used the mixer thorough mixing, in vacuum drying oven in 90 ℃ of drying treatment 2 hours, furnace cooling.Powder is adorned mould, under room temperature, 90Mpa pressure, give moulding, be warming up to 375 ℃, be forced into 90Mpa and pressurize 30 minutes, naturally cooling, the demoulding, processing sample preparation with 2～3 ℃/min.Make the frictional coefficient 0.19 of material, wear rate 7.54 * 10
-16m
3/ (N.m), flexural strength 162MPa, hardness 304MPa, linear expansivity 3.24 * 10
-5℃
-1
Embodiment 2: polyimide 76% by weight percentage, and polyamidoimide parcel is handled molybdenumdisulphide 15%, and graphite 9% batching is used the mixer thorough mixing, in vacuum drying oven in 80 ℃ of drying treatment 3 hours, furnace cooling.Powder is adorned mould, under room temperature, 70Mpa pressure, give moulding, freely be warming up to 360 ℃, pressurization 70Mpa and pressurize 50 minutes, naturally cooling, the demoulding, processing sample preparation with 2～3 ℃/min.Make the frictional coefficient 0.22 of material, wear rate 8.8 * 10
-16m
3/ (N.m), flexural strength 183MPa, hardness 334MPa, linear expansivity 4.54 * 10
-5℃
-1
Embodiment 3: polyimide 67% by weight percentage, graphite 23%, BaSO
410% batching is used the mixer thorough mixing, in vacuum drying oven in 120 ℃ of drying treatment 1 hour, furnace cooling.Powder is adorned mould, under room temperature, 70MPa pressure, give moulding, freely be warming up to 370 ℃, pressurization 70Mpa and pressurize 50 minutes, naturally cooling, the demoulding, processing sample preparation with 2-3 ℃/min.Make the frictional coefficient 0.18 of material, wear rate 7.5 * 10
-16m
3/ (N.m), flexural strength 113MPa.
Table 2 has been listed the friction and wear behavior of several prescription matrix materials:
Friction and wear behavior prescription (Wt.%) frictional coefficient wear rate * 10 of table 2. matrix material
-16m
3/ (N.m) polyimide: graphite=75: 25 0.18 7.4 polyimide: molybdenumdisulphide=53: 47 0.10 6.8 polyimide: tetrafluoroethylene=75: 25 0.18 10.2 polyimide: graphite: molybdenumdisulphide=68: 14: 18 0.16 11.2 polyimide: graphite: Cu
2O=80: 15: 5 0.16 8.9 polyimide: graphite: processing molybdenumdisulphide=71: 19: 10 0.18 9.8
Claims (2)
1, a base polymer based self lubricated composite material is made up of polymeric matrix, solid lubricant etc., can be used as friction materials, and prescription comprises (weight percentage):
ODPA-M type polyimide 60～85%
Polyamidoimide 5～20%
MoS
2 5～35％
Graphite 5～10%
Tetrafluoroethylene 2～20%
Cu
2O 2～15％
BaSO
4 2～10％
2, as the preparation method of the said polymer based self lubricated composite material of claim 1, comprise batch mixing, drying, cold pressing, process such as sintering, the demoulding, processing, after it is characterized in that each component mixes, dry down at 120 ℃ ± 5 ℃, at room temperature give under the 50-100MPa molded, at 340 ℃ of-380 ℃ of following heat-insulation pressure keeping 30-60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118938A CN1186827A (en) | 1996-12-24 | 1996-12-24 | Polyimide self lubricating composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118938A CN1186827A (en) | 1996-12-24 | 1996-12-24 | Polyimide self lubricating composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1186827A true CN1186827A (en) | 1998-07-08 |
Family
ID=5125438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96118938A Pending CN1186827A (en) | 1996-12-24 | 1996-12-24 | Polyimide self lubricating composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1186827A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123602C (en) * | 2000-03-13 | 2003-10-08 | 中国科学院化学研究所 | Refractory antiwear polyimide as sealing material and its preparing process and application |
| CN1301298C (en) * | 2005-07-22 | 2007-02-21 | 南京工业大学 | Self-lubricating bearing material, and preparation method |
| CN1894518B (en) * | 2003-12-12 | 2010-06-30 | 卢克摩擦片和离合器两合公司 | Friction liner, especially the friction liner used for clutch or brake |
| CN101629601B (en) * | 2009-08-04 | 2011-04-06 | 重庆斯凯迪轴瓦有限公司 | High molecular abrasion-proof bearing bush |
| CN103849310A (en) * | 2012-11-29 | 2014-06-11 | 中国科学院兰州化学物理研究所 | Method for preparing solid lubricant coating on aluminum base bearing bush |
| CN103849311A (en) * | 2012-11-29 | 2014-06-11 | 中国科学院兰州化学物理研究所 | Method for preparing solid lubricant coating on copper base bearing bush |
| CN104761915A (en) * | 2015-03-20 | 2015-07-08 | 巨化集团技术中心 | Preparation method of wear-resistant polyimide and fluorine-containing polymer composition |
| CN105482361A (en) * | 2016-01-12 | 2016-04-13 | 山东佳星环保科技有限公司 | Graphene-based wearproof composite lubricating material and preparation method thereof |
| CN105566905A (en) * | 2016-01-28 | 2016-05-11 | 吉林大学 | Method for reducing friction coefficient of polyetherimide by adding bi-component fillers |
| CN108300958A (en) * | 2018-02-10 | 2018-07-20 | 石磊 | A kind of preparation method of high temperature resistant self-lubricating type wear-resistant coating |
| CN111334041A (en) * | 2020-03-26 | 2020-06-26 | 中国科学院兰州化学物理研究所 | Polyimide lubricating material filled with nano titanium nitride and preparation method thereof |
| CN117382062A (en) * | 2023-11-20 | 2024-01-12 | 常州杰铭新材料科技有限公司 | Method for preparing cross-linked polyimide product based on cold-press sintering method |
-
1996
- 1996-12-24 CN CN96118938A patent/CN1186827A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123602C (en) * | 2000-03-13 | 2003-10-08 | 中国科学院化学研究所 | Refractory antiwear polyimide as sealing material and its preparing process and application |
| CN1894518B (en) * | 2003-12-12 | 2010-06-30 | 卢克摩擦片和离合器两合公司 | Friction liner, especially the friction liner used for clutch or brake |
| CN1301298C (en) * | 2005-07-22 | 2007-02-21 | 南京工业大学 | Self-lubricating bearing material, and preparation method |
| CN101629601B (en) * | 2009-08-04 | 2011-04-06 | 重庆斯凯迪轴瓦有限公司 | High molecular abrasion-proof bearing bush |
| CN103849310B (en) * | 2012-11-29 | 2016-01-13 | 中国科学院兰州化学物理研究所 | A kind of method preparing solid lubricant coating on aluminium base bearing shell |
| CN103849310A (en) * | 2012-11-29 | 2014-06-11 | 中国科学院兰州化学物理研究所 | Method for preparing solid lubricant coating on aluminum base bearing bush |
| CN103849311A (en) * | 2012-11-29 | 2014-06-11 | 中国科学院兰州化学物理研究所 | Method for preparing solid lubricant coating on copper base bearing bush |
| CN103849311B (en) * | 2012-11-29 | 2016-01-13 | 中国科学院兰州化学物理研究所 | A kind of method preparing solid lubricant coating on copper standard shaft watt |
| CN104761915A (en) * | 2015-03-20 | 2015-07-08 | 巨化集团技术中心 | Preparation method of wear-resistant polyimide and fluorine-containing polymer composition |
| CN105482361A (en) * | 2016-01-12 | 2016-04-13 | 山东佳星环保科技有限公司 | Graphene-based wearproof composite lubricating material and preparation method thereof |
| CN105566905A (en) * | 2016-01-28 | 2016-05-11 | 吉林大学 | Method for reducing friction coefficient of polyetherimide by adding bi-component fillers |
| CN108300958A (en) * | 2018-02-10 | 2018-07-20 | 石磊 | A kind of preparation method of high temperature resistant self-lubricating type wear-resistant coating |
| CN111334041A (en) * | 2020-03-26 | 2020-06-26 | 中国科学院兰州化学物理研究所 | Polyimide lubricating material filled with nano titanium nitride and preparation method thereof |
| CN111334041B (en) * | 2020-03-26 | 2021-07-23 | 中国科学院兰州化学物理研究所 | Polyimide lubricating material filled with nano titanium nitride and preparation method thereof |
| CN117382062A (en) * | 2023-11-20 | 2024-01-12 | 常州杰铭新材料科技有限公司 | Method for preparing cross-linked polyimide product based on cold-press sintering method |
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