CN106317872A - Polyimide-based self-lubricating composite material applicable to oil lubrication working conditions and preparation method thereof - Google Patents
Polyimide-based self-lubricating composite material applicable to oil lubrication working conditions and preparation method thereof Download PDFInfo
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- CN106317872A CN106317872A CN201610815982.9A CN201610815982A CN106317872A CN 106317872 A CN106317872 A CN 106317872A CN 201610815982 A CN201610815982 A CN 201610815982A CN 106317872 A CN106317872 A CN 106317872A
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- polyimide
- lubricating composite
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- composite material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
- C08K2003/3036—Sulfides of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a polyimide-based self-lubricating composite material applicable to oil lubrication working conditions. The polyimide-based self-lubricating composite material comprises, by weight percentage, 69-94% of polyimide, 5-30% of glass fibers and 1-7% of zinc sulfide. The invention further discloses a preparation method of the composite material. The polyimide-based self-lubricating composite material is high in mechanical performance and has extremely low friction coefficient and wear rate under the boundary and mixed lubrication conditions.
Description
Technical field
The present invention relates to a kind of glass fibre and the composite modified polyimide self lubricating composite material of zinc sulfide and system thereof
Preparation Method, belongs to self-lubricating composite field.This composite can be applicable to the sliding bearing in the fields such as automobile engine, stops
Thrust bearing and bearing shell etc..
Background technology
Along with the fast development in the field such as auto industry, high-end equipment, the military service operating mode of associated mechanical motion is more come
The harshest, machinery frequent start-stop, at a high speed, heavy duty etc. complex working condition cause mixed lubrication even boundary lubrication in motion
Often occur, to the reliability of traditional mechanical parts and propose new challenge service life.Polymer composites due to
The excellent properties such as itself density is little, specific strength is high, performance can design, self-lubricating, corrosion resistance and good, lead in high-tech industry
Application in territory is increasingly extensive.Polymer composites-the metallic rubbing pairs optimizing design is used to replace metal-metal friction pair
Can effectively prevent the occlusion of motion, provide new thinking for solving the design of mechanical mechanism friction pair.Polyimides is made
Engineering plastics for a kind of superior performance have the performances such as excellent mechanical performance, prominent heat stability, radioprotective, the most extensively
General it is applied to the fields such as automobile, Aeronautics and Astronautics, transport.But owing to pure polyimide material bearing capacity is relatively low, friction,
Polishing machine is poor, it is difficult to meets the use requirement under some harsh conditions, is required for concrete application conditions and changes it
Property and functionalized design.
At present the Self-lubrication composite material of polyimide of exploitation is primarily directed under DRY SLIDING to use, rarely have for
The self-lubricating composite of harsh Oil Lubrication Condition exploitation.The existing Patents of China has: 200510027062.2-nanometer
Al2O3The preparation method of/polyimide friction compound material sliding bearing, 200810042468.1-mono-kind polyimides is combined
Material prepares the method for sliding bearing, 201110369472.0-Self-lubrication composite material of polyimide.These materials are main
Use micron and nano-filler modified polyimides, be applied to the material for sliding bearing under DRY SLIDING.
In conjunction with the military service operating mode of the parts such as field oil lubrication sliding bearing, thrust bearing and bearing shell such as automobile engine, logical
Cross rational design of material and uniform recipe design, even if under harsh Oil Lubrication Condition, still can realize being effectively improved polyamides
The bearing capacity of imine matrix and anti-wear performance, and promote that composite forms the limit of excellent lubricating properties on metal pairs surface
Boundary's reaction film, and then improve the friction of material, polishing machine and dependability.
Summary of the invention
It is an object of the invention to provide a kind of polyimide self lubricating composite material being applicable to oil lubrication operating mode and
Its preparation method.This material have under harsh Oil Lubrication Condition good antiwear and friction reduction property and excellent stability in use and
Long service life.
The present invention is achieved by the following measures:
The present invention carries by adding enhancing phase glass fibre in polyimide matrix according to design on material structure and performance optimization
The bearing capacity of high composite and abrasion resistance, improve metal pairs surface-boundary reaction film by adding zns particle
Form speed and greasy property so that it is quickly form the Failure of Reaction Films of stable superior performance in contact surface.Using
Cheng Zhong, this composite by ensureing the long-lasting and stability of lubricating system with the synergism of oil lubrication medium.Select poly-
Acid imide be polymeric matrix, glass fibre be functional stuffing for strengthening phase, zns particle.
A kind of polyimide self lubricating composite material being applicable to oil lubrication operating mode, it is characterised in that this composite institute
The component comprised and the volumn concentration of each component be: polyimides 69 ~ 94%, glass fibre 5 ~ 30%, zinc sulfide 1 ~ 7%.
Described polyimides is TPI powder, and particle diameter is 45 ~ 75 μm.
Described glass fibre is short glass fiber, and filament diameter is 5 ~ 30 μm, a length of 50 ~ 300 μm.
The particle diameter of described zinc sulfide is 20 ~ 300nm.
The preparation method of polyimide self lubricating composite material as mentioned above, it is characterised in that concretely comprise the following steps: will be poly-
Acid imide, glass fibre and zinc sulfide stirring carry out preliminary dry mixed, and well-mixed raw material uses double screw extruder to enter
Row high-temperature fusion is mixing and extrudes；By uniform for melting mixing extruded stock through injector injection mo(u)lding.
One district's heating-up temperature of described double screw extruder is 385 ~ 390 DEG C, and two district's heating-up temperatures are 395 ~ 405 DEG C, three
District's heating-up temperature is 410 ~ 415 DEG C, and screw speed is 150-250r/min.
The injection molding temperature of described injector is 210-230 DEG C, injection tube temperature 390 ~ 415 DEG C, injection pressure 160-
180MPa。
The present invention considers working in coordination with between effect and each component of different component on material structure and performance design
Effect.The material of the present invention is made up of with functional stuffing mutually polymeric matrix, enhancing.The polyimide matrix that the present invention selects
There is excellent mechanical performance, prominent heat stability, radioprotective and the performance such as corrosion-resistant；The glass fibre selected has resistance to
Hot strong, the feature such as corrosion resistance is good, mechanical strength is high, wearability is good.Under border and mixed lubricating state, glass fibre carries
The wearability of high polyimide matrix, and zinc sulfide promotes to occur in friction process friction chemical reaction, on metal pairs surface
Form the Failure of Reaction Films of excellent lubricating properties, reduce the friction and wear of moving component, the notable use extending moving component
In the life-span, improve the reliability of system.
Accompanying drawing explanation
Fig. 1 is the coefficient of friction variation diagram in time of self-lubricating composite of the present invention.
Fig. 2 is the average friction coefficient of self-lubricating composite of the present invention.
Fig. 3 is the average wear rate of self-lubricating composite of the present invention.
Detailed description of the invention
Further illustrate the present invention below by specific embodiment, but the present embodiment is not limited to the present invention, every
Use the similarity method of the present invention and similar change thereof, protection scope of the present invention all should be listed in.
Embodiment 1
The volume components percentage ratio of a kind of polyimide self lubricating composite material being applicable to oil lubrication operating mode is: polyamides is sub-
Amine: 85%, glass fibre 10%, zinc sulfide 5%.First, polyimides and glass fibre raw material are dried 3 at 150 DEG C of air dry ovens
Hour, zinc sulfide is dried 3 hours at 100 DEG C.Above volume fraction raw material is placed in homogenizer, carries out preliminary dry method and mix
Closing, it is mixing that well-mixed raw material uses double screw extruder to carry out high-temperature fusion, and extruder uses three sections of heating, from charging aperture
Being followed successively by district's heating-up temperature to discharging opening heating-up temperature is 385 ~ 390 DEG C, and two district's heating-up temperatures are 395 ~ 405 DEG C, and 3rd district add
Hot temperature is 410 ~ 415 DEG C, and screw speed is 200r/min.By uniform for melting mixing extruded stock through injector injection mo(u)lding,
The injection molding temperature of injector is 220 DEG C, injection tube temperature 405 DEG C, injection pressure 170MPa.
Embodiment 2
The volume components percentage ratio of a kind of polyimide self lubricating composite material being applicable to oil lubrication operating mode is: polyimides
70%, glass fibre 23%, zinc sulfide 7%.First, to be dried 3 at 150 DEG C of air dry ovens little for polyimides and glass fibre raw material
Time, zinc sulfide is dried 3 hours at 100 DEG C.Above volume fraction raw material is placed in homogenizer, carries out preliminary dry mixed,
Well-mixed raw material uses double screw extruder, and to carry out high-temperature fusion mixing, and extruder uses three sections of heating, from charging aperture to
It is 385 ~ 390 DEG C that discharging opening heating-up temperature is followed successively by district's heating-up temperature, and two district's heating-up temperatures are 395 ~ 405 DEG C, three-zone heating
Temperature is 410 ~ 415 DEG C, and screw speed is 180r/min.By uniform for melting mixing extruded stock through injector injection mo(u)lding, note
The injection molding temperature penetrating machine is 230 DEG C, injection tube temperature 410 DEG C, injection pressure 180MPa.
Embodiment 3
The volume components percentage ratio of a kind of polyimide self lubricating composite material being applicable to oil lubrication operating mode is: polyimides
90%, glass fibre 8%, zinc sulfide 2%.First, to be dried 3 at 150 DEG C of air dry ovens little for polyimides and glass fibre raw material
Time, zinc sulfide is dried 3 hours at 100 DEG C.Above volume fraction raw material is placed in homogenizer, carries out preliminary dry mixed,
Well-mixed raw material uses double screw extruder, and to carry out high-temperature fusion mixing, and extruder uses three sections of heating, from charging aperture to
It is 385 ~ 390 DEG C that discharging opening heating-up temperature is followed successively by district's heating-up temperature, and two district's heating-up temperatures are 395 ~ 405 DEG C, three-zone heating
Temperature is 410 ~ 415 DEG C, and screw speed is 220r/min.By uniform for melting mixing extruded stock through injector injection mo(u)lding, note
The injection molding temperature penetrating machine is 200 DEG C, injection tube temperature 400 DEG C, injection pressure 170MPa.
Comparative example 1
The volume components percentage ratio adjusting self-lubricating composite is: polyimides 100%.Material preparation process and embodiment 1 phase
With.
Embodiment 4
Sample in embodiment 1 and comparative example 1 is processed into the coupon of 50mm × 10mm × 4mm；In ring-block friction-wear test
Friction and wear behavior under the conditions of coupon to embodiment 1 and comparative example 1 carries out immersion oil the most in triplicate respectively on machine
Analyze.Test condition is: antithesis is GCr15 bearing steel proving ring, initial surface roughness Ra0.1 ~ 0.2 μm, and lubricant medium is
Mobil synthetic base oil PAO4, friction radius 30mm, test load is 400N, and sliding speed is respectively 0.05m/s and 0.2m/s,
The friction-wear test time is 180min.
Wherein, when sliding speed is 0.05m/s, the coefficient of friction of embodiment 1 is 0.066, and wear rate is 4.31 × 10- 7mm3/ Nm, compared to the friction and wear behavior of comparative example under the same terms 1, frictional decrease 20%, wear rate reduces by 60%；When
When sliding speed is 0.2m/s, the coefficient of friction of embodiment 1 is 0.023, and wear rate is 9.3 × 10-8mm3/ Nm, compared to identical
Under the conditions of the friction and wear behavior of comparative example 1, frictional decrease 72%, wear rate reduces by 85%.
The present invention considers working in coordination with between effect and each component of different component on material structure and performance design
Effect.The present invention as strengthening phase, improves mechanical performance and the wear resistance of polyimides by interpolation glass fibre.On limit
Under boundary and mixed lubricating state, zinc sulfide promotes to occur in friction process friction chemical reaction, forms profit on metal pairs surface
The Failure of Reaction Films of sliding excellent performance, reduces the friction and wear of moving component, significantly extends the service life of moving component, carries
The reliability of high system.Composite polyimide material of the present invention can be applicable to the sliding axle in the fields such as automobile engine
Hold, thrust bearing and bearing shell etc., preparation technology is simple, shows preferably use compared to traditional composite polyimide material
Reliability and longer service life.
Claims (7)
1. the polyimide self lubricating composite material being applicable to oil lubrication operating mode, it is characterised in that this composite is wrapped
The component contained and the volumn concentration of each component be: polyimides 69 ~ 94%, glass fibre 5 ~ 30%, zinc sulfide 1 ~ 7%.
2. self-lubricating composite as claimed in claim 1, it is characterised in that described polyimides is TPI
Powder, particle diameter is 45 ~ 75 μm.
3. self-lubricating composite as claimed in claim 1, it is characterised in that described glass fibre is short glass fiber, single
Filament diameter is 5 ~ 30 μm, a length of 50 ~ 300 μm.
4. self-lubricating composite as claimed in claim 1, it is characterised in that the particle diameter of described zinc sulfide is 20 ~ 300nm.
5. the preparation method of polyimide self lubricating composite material as according to any one of Claims 1-4, it is characterised in that
Concretely comprise the following steps: the stirring of polyimides, glass fibre and zinc sulfide is carried out preliminary dry mixed, and well-mixed raw material uses
It is mixing and extrude that double screw extruder carries out high-temperature fusion；By uniform for melting mixing extruded stock through injector injection mo(u)lding.
6. preparation method as claimed in claim 5, it is characterised in that district's heating-up temperature of described double screw extruder is 385
~ 390 DEG C, two district's heating-up temperatures are 395 ~ 405 DEG C, and three-zone heating temperature is 410 ~ 415 DEG C, and screw speed is 150-250r/
min。
7. preparation method as claimed in claim 5, it is characterised in that the injection molding temperature of described injector is 210-230
DEG C, injection tube temperature 390 ~ 415 DEG C, injection pressure 160-180MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610815982.9A CN106317872A (en) | 2016-09-12 | 2016-09-12 | Polyimide-based self-lubricating composite material applicable to oil lubrication working conditions and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610815982.9A CN106317872A (en) | 2016-09-12 | 2016-09-12 | Polyimide-based self-lubricating composite material applicable to oil lubrication working conditions and preparation method thereof |
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| CN106317872A true CN106317872A (en) | 2017-01-11 |
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|---|---|---|---|
| CN201610815982.9A Pending CN106317872A (en) | 2016-09-12 | 2016-09-12 | Polyimide-based self-lubricating composite material applicable to oil lubrication working conditions and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112899060A (en) * | 2021-03-03 | 2021-06-04 | 中国科学院兰州化学物理研究所 | Preparation and application of molybdenum disulfide/zinc sulfide hybrid lubricating additive |
| CN114806174A (en) * | 2022-06-14 | 2022-07-29 | 兰州中科聚润新材料有限公司 | Modified polyetherimide material, preparation method thereof and cable support |
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| US20050038145A1 (en) * | 2003-08-11 | 2005-02-17 | General Electric Company | Flame retardant fiber reinforced composition with improved flow |
| CN1727408A (en) * | 2005-07-22 | 2006-02-01 | 南京工业大学 | Self-lubricating bearing material, and preparation method |
| CN104470981A (en) * | 2012-05-16 | 2015-03-25 | 索尔维特殊聚合物美国有限责任公司 | Tribological aromatic polyimide compositions |
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2016
- 2016-09-12 CN CN201610815982.9A patent/CN106317872A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050038145A1 (en) * | 2003-08-11 | 2005-02-17 | General Electric Company | Flame retardant fiber reinforced composition with improved flow |
| CN1727408A (en) * | 2005-07-22 | 2006-02-01 | 南京工业大学 | Self-lubricating bearing material, and preparation method |
| CN104470981A (en) * | 2012-05-16 | 2015-03-25 | 索尔维特殊聚合物美国有限责任公司 | Tribological aromatic polyimide compositions |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112899060A (en) * | 2021-03-03 | 2021-06-04 | 中国科学院兰州化学物理研究所 | Preparation and application of molybdenum disulfide/zinc sulfide hybrid lubricating additive |
| CN112899060B (en) * | 2021-03-03 | 2022-03-25 | 中国科学院兰州化学物理研究所 | Preparation and application of molybdenum disulfide/zinc sulfide hybrid lubricating additive |
| CN114806174A (en) * | 2022-06-14 | 2022-07-29 | 兰州中科聚润新材料有限公司 | Modified polyetherimide material, preparation method thereof and cable support |
| CN114806174B (en) * | 2022-06-14 | 2023-09-08 | 兰州中科聚润新材料有限公司 | Modified polyetherimide material, preparation method thereof and cable support |
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Application publication date: 20170111 |