CN113321883A - Preparation method of homogeneous polytetrafluoroethylene self-lubricating three-layer composite material - Google Patents
Preparation method of homogeneous polytetrafluoroethylene self-lubricating three-layer composite material Download PDFInfo
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- CN113321883A CN113321883A CN202110500073.7A CN202110500073A CN113321883A CN 113321883 A CN113321883 A CN 113321883A CN 202110500073 A CN202110500073 A CN 202110500073A CN 113321883 A CN113321883 A CN 113321883A
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 49
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 49
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000011259 mixed solution Substances 0.000 claims abstract description 56
- 238000003756 stirring Methods 0.000 claims abstract description 53
- 239000000725 suspension Substances 0.000 claims abstract description 28
- 239000000839 emulsion Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000002105 nanoparticle Substances 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 12
- 239000006185 dispersion Substances 0.000 claims abstract description 11
- 239000012767 functional filler Substances 0.000 claims abstract description 10
- 239000012763 reinforcing filler Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000000084 colloidal system Substances 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 9
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 8
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 3
- 238000005054 agglomeration Methods 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 13
- 238000013329 compounding Methods 0.000 description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C08K7/06—Elements
-
- 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
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Lubricants (AREA)
Abstract
A preparation method of a homogeneous polytetrafluoroethylene self-lubricating three-layer composite material comprises the following steps: step S1: mixing and stirring functional filler particles, nano particles and water to form a suspension; step S2: grinding the suspension by a colloid grinder to form emulsion; step S3: stirring the emulsion, the polytetrafluoroethylene concentrated dispersion and the reinforcing filler to form a first mixed solution; step S4: stirring the first mixed solution and polytetrafluoroethylene suspension powder to form a second mixed solution; step S5: heating and stirring the second mixed solution; step S6: and drying the second mixed solution until the second mixed solution is dried to be in a slurry state. The dispersion is uniform, agglomeration is avoided, and the mechanical property, the self-lubricating property and the friction resistance are improved.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a preparation method of a homogeneous polytetrafluoroethylene self-lubricating three-layer composite material.
Background
Polytetrafluoroethylene (PTFE, abbreviated as "plastic king") is a high molecular polymer prepared by polymerizing tetrafluoroethylene as a monomer. The coating is white wax-like, semitransparent, excellent in heat resistance and cold resistance, strong in corrosion resistance, resistant to acid and alkali, resistant to various organic solvents and extremely low in friction coefficient, and can be used at the temperature of minus 180-260 ℃ for a long time. And is therefore particularly suitable for use as a protective layer for self-lubricating materials. However, the existing polytetrafluoroethylene has poor dispersibility, and if inorganic fillers with the particle size of less than 10um, such as calcium fluoride, calcium oxide, silicon dioxide, barium sulfate and other particles, are directly added, the particles are easy to agglomerate and are unevenly distributed, and the performance is affected.
Disclosure of Invention
In view of the above, the present invention provides a method for preparing a homogeneous self-lubricating three-layer composite material of polytetrafluoroethylene, which has the advantages of uniform dispersion, avoiding agglomeration, and improving mechanical properties, self-lubricating property and friction resistance, so as to solve the above problems.
The preparation method of the homogeneous polytetrafluoroethylene self-lubricating three-layer composite material comprises the following steps: step S1: mixing and stirring functional filler particles, nano particles and water to form a suspension; step S2: grinding the suspension by a colloid grinder for 10-15 minutes to form emulsion; step S3: stirring the emulsion, the polytetrafluoroethylene concentrated dispersion and the reinforcing filler to form a first mixed solution, wherein the temperature is 30-50 ℃, and the stirring time is 30-60 minutes; step S4: stirring the first mixed solution and polytetrafluoroethylene suspension powder to form a second mixed solution, wherein the stirring time is 30-60 minutes; step S5: heating and stirring the second mixed solution at 80-90 ℃; step S6: and drying the second mixed solution until the second mixed solution is dried into a slurry state, wherein the heating temperature is 110 ℃.
Further, the functional filler particles are one or any combination of calcium fluoride, calcium oxide, silicon dioxide and barium sulfate.
Further, the volume ratio of the water powder in the suspension is more than 4: 1.
further, the reinforcing filler is one or any combination of glass fiber, carbon fiber, aramid fiber and potassium titanate whisker.
Further, the volume ratio of the reinforcing filler in the first mixed solution is 3-15%.
Further, the volume ratio of the fluoride in the first mixed solution is 1: 4.
further, the volume ratio of the polytetrafluoroethylene to the fluoride in the first mixed solution is 95: 20 to 70: 120.
further, the weight ratio of the alcohol in the second mixed solution is 1%.
Compared with the prior art, the preparation method of the homogeneous polytetrafluoroethylene self-lubricating three-layer composite material comprises the following steps: step S1: mixing and stirring functional filler particles, nano particles and water to form a suspension; step S2: grinding the suspension by a colloid grinder for 10-15 minutes to form emulsion; step S3: stirring the emulsion, the polytetrafluoroethylene concentrated dispersion and the reinforcing filler to form a first mixed solution, wherein the temperature is 30-50 ℃, and the stirring time is 30-60 minutes; step S4: stirring the first mixed solution and polytetrafluoroethylene suspension powder to form a second mixed solution, wherein the stirring time is 30-60 minutes; step S5: heating and stirring the second mixed solution at 80-90 ℃; step S6: and drying the second mixed solution until the second mixed solution is dried into a slurry state, wherein the heating temperature is 110 ℃. The dispersion is uniform, agglomeration is avoided, and the mechanical property, the self-lubricating property and the friction resistance are improved.
Drawings
Embodiments of the invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the steps of the preparation method of the homogeneous polytetrafluoroethylene self-lubricating three-layer composite material provided by the invention.
FIG. 2 is a bar graph comparing the amount of wear of the products of example 1, example 2 and comparative example.
Detailed Description
Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
Referring to fig. 1, the preparation method of the homogeneous polytetrafluoroethylene self-lubricating three-layer composite material provided by the invention comprises the following steps:
step S1: mixing functional filler particles (such as one or more of calcium fluoride, calcium oxide, silicon dioxide, barium sulfate and the like), nanoparticles (such as one or more of silicon dioxide nanoparticles, silicon nitride nanoparticles and aluminum oxide nanoparticles) and water, and stirring to form a suspension (the volume ratio of water to powder is more than 4: 1);
step S2: grinding the suspension by a colloid grinder for 10-15 minutes to form emulsion;
step S3: stirring the ground emulsion, a polytetrafluoroethylene concentrated dispersion solution and a reinforcing filler (a fibrous structure filler such as one or more of glass fiber, carbon fiber, aramid fiber, potassium titanate whisker and the like) at a volume ratio of 3-15% to form a first mixed solution, wherein the temperature is 30-50 ℃ and the stirring time is 30-60 minutes; the volume ratio of the fluoride in the first mixed solution is 1: 4;
step S4: stirring the stirred first mixed solution and polytetrafluoroethylene suspension powder, wherein the volume ratio of polytetrafluoroethylene to fluoride in the first mixed solution is 95: 20 to 70: 120, forming a second mixed solution, adding alcohol in the stirring process, wherein the weight ratio of the alcohol in the second mixed solution is 1%, the solubility of the polytetrafluoroethylene suspension powder can be improved, and the stirring time is 30-60 minutes;
step S5: heating and stirring the mixed second mixed solution at the temperature of 80-90 ℃;
step S6: and drying the second mixed solution at the heating temperature of 110 ℃ to obtain slurry.
And then carrying out wet fluorine compounding, roll compounding the sintered spherical powder plate and the slurry, drying and sintering to form the membrane-shaped homogeneous polytetrafluoroethylene self-lubricating three-layer composite material.
Example 1
Step S1: mixing and stirring 20 wt.% of functional filler calcium fluoride particles and 1 wt.% of silicon dioxide nano particles with water at room temperature by using an electric stirrer, adding water in an amount which is 50 times of the weight of the calcium fluoride and the nano particles, and stirring to form a suspension;
step S2: grinding the suspension by a colloid grinder for 10-15 minutes to form emulsion;
step S3: stirring the ground emulsion, 33 wt.% of polytetrafluoroethylene concentrated dispersion and 4 wt.% of carbon fiber to form a first mixed solution, wherein the temperature is 30-50 ℃, and the stirring time is 30 minutes;
step S4: stirring the stirred first mixed solution and 55 wt.% of polytetrafluoroethylene suspension powder, adding alcohol in the stirring process, wherein the weight ratio of the alcohol in the second mixed solution is 1 wt.%, and stirring for 30 minutes;
step S5: heating and stirring the mixed second mixed solution at 80-90 ℃, and performing centrifugal dehydration after stirring;
step S6: and drying the dehydrated second mixed solution at the heating temperature of 110 ℃ to obtain slurry.
And then carrying out wet fluorine compounding, roll compounding the sintered spherical powder plate and the slurry, drying and sintering to form the membrane-shaped homogeneous polytetrafluoroethylene self-lubricating three-layer composite material.
Example 2
Step S1: mixing and stirring 20 wt.% of functional filler calcium fluoride particles and 2 wt.% of alumina nano particles with water at room temperature by using an electric stirrer, adding water in an amount which is 20 times of the weight of the calcium fluoride and the nano particles, and stirring to form a suspension;
step S2: grinding the suspension by a colloid grinder for 10-15 minutes to form emulsion;
step S3: stirring the ground emulsion, 33 wt.% of polytetrafluoroethylene concentrated dispersion and 3 wt.% of glass fiber to form a first mixed solution, wherein the temperature is 30-50 ℃, and the stirring time is 30 minutes;
step S4: stirring the stirred first mixed solution and 55 wt.% of polytetrafluoroethylene suspension powder, adding alcohol during stirring, wherein the weight ratio of acetone in the second mixed solution is 1 wt.%, and the stirring time is 30 minutes;
step S5: heating and stirring the mixed second mixed solution at 80-90 ℃, and performing centrifugal dehydration after stirring;
step S6: and drying the dehydrated second mixed solution at the heating temperature of 110 ℃ to obtain slurry.
And then carrying out wet fluorine compounding, roll compounding the sintered spherical powder plate and the slurry, drying and sintering to form the membrane-shaped homogeneous polytetrafluoroethylene self-lubricating three-layer composite material.
Comparative example:
step S1: firstly mixing 15 wt.% of polyphenyl ester, 5 wt.% of glass fiber, 1 wt.% of alumina particles and 30 wt.% of polytetrafluoroethylene suspension powder, and then stirring at high speed;
step S2: adding 100 wt.% of polytetrafluoroethylene emulsion (with the solid content of 60 wt%) into the stirred mixture, granulating and stirring to form slurry;
and then carrying out wet fluorine compounding, roll compounding the sintered spherical powder plate and the slurry, drying and sintering to form the membrane-shaped homogeneous polytetrafluoroethylene self-lubricating three-layer composite material.
Refer to FIG. 2, which is a bar graph comparing the wear loss of PTFE composite materials prepared in examples 1 and 2 and comparative example after continuous operation for 8h in oil lubrication (32# lube) medium at a load of 20MPa and a rotation speed of 1 m/s. The test was carried out using a standard MPV-20D friction wear tester. This figure shows that the amount of abrasion was significantly reduced for both samples of example 1 and example 2 compared to the comparative example.
Compared with the prior art, the preparation method of the homogeneous polytetrafluoroethylene self-lubricating three-layer composite material comprises the following steps: step S1: mixing and stirring functional filler particles, nano particles and water to form a suspension; step S2: grinding the suspension by using a colloid grinder to form emulsion; step S3: stirring the emulsion, the polytetrafluoroethylene concentrated dispersion and the reinforcing filler to form a first mixed solution; step S4: stirring the first mixed solution and polytetrafluoroethylene suspension powder to form a second mixed solution; step S5: heating and stirring the second mixed solution; step S6: and drying the second mixed solution until the second mixed solution is dried to be in a slurry state. The homogeneous polytetrafluoroethylene self-lubricating three-layer composite material formed in the way is uniformly dispersed, avoids agglomeration, and improves the mechanical property, self-lubricating property and friction resistance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.
Claims (8)
1. A preparation method of a homogeneous polytetrafluoroethylene self-lubricating three-layer composite material is characterized by comprising the following steps: the method comprises the following steps:
step S1: mixing and stirring functional filler particles, nano particles and water to form a suspension;
step S2: grinding the suspension by a colloid grinder for 10-15 minutes to form emulsion;
step S3: stirring the emulsion, the polytetrafluoroethylene concentrated dispersion and the reinforcing filler to form a first mixed solution, wherein the temperature is 30-50 ℃, and the stirring time is 30-60 minutes;
step S4: stirring the first mixed solution and polytetrafluoroethylene suspension powder to form a second mixed solution, wherein the stirring time is 30-60 minutes;
step S5: heating and stirring the second mixed solution at 80-90 ℃;
step S6: and drying the second mixed solution until the second mixed solution is dried into a slurry state, wherein the heating temperature is 110 ℃.
2. The process for the preparation of the homogeneous self-lubricating three-layer composite material of polytetrafluoroethylene according to claim 1, wherein: the functional filler particles are one or any combination of calcium fluoride, calcium oxide, silicon dioxide and barium sulfate.
3. The process for the preparation of the homogeneous self-lubricating three-layer composite material of polytetrafluoroethylene according to claim 1, wherein: the volume ratio of water to powder in the suspension is more than 4: 1.
4. the process for the preparation of the homogeneous self-lubricating three-layer composite material of polytetrafluoroethylene according to claim 1, wherein: the reinforcing filler is one or any combination of glass fiber, carbon fiber, aramid fiber and potassium titanate whisker.
5. The process for the preparation of the homogeneous self-lubricating three-layer composite material of polytetrafluoroethylene according to claim 1, wherein: the volume ratio of the reinforcing filler in the first mixed solution is 3-15%.
6. The process for the preparation of the homogeneous self-lubricating three-layer composite material of polytetrafluoroethylene according to claim 1, wherein: the volume ratio of fluoride in the first mixed solution is 1: 4.
7. the process for the preparation of the homogeneous self-lubricating three-layer composite material of polytetrafluoroethylene according to claim 1, wherein: the volume ratio of the polytetrafluoroethylene to the fluoride in the first mixed solution is 95: 20 to 70: 120.
8. the process for the preparation of the homogeneous self-lubricating three-layer composite material of polytetrafluoroethylene according to claim 1, wherein: the weight ratio of the alcohol in the second mixed solution is 1%.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049364A (en) * | 1989-08-07 | 1991-02-20 | 斯塔特尼怀茨库尼乌斯塔夫物料公司 | The matrix material and the manufacture method thereof that are used for sliding surface |
| CN103333442A (en) * | 2013-06-08 | 2013-10-02 | 山东瑞特新材料有限公司 | Preparation method of TiO2-SiC-fiber filled polytetrafluoroethylene composite material |
| WO2016034827A1 (en) * | 2014-09-05 | 2016-03-10 | Centre Technique Des Industries Mecaniques | Matériau composite autolubrifiant |
| CN112608783A (en) * | 2020-12-14 | 2021-04-06 | 合肥波林新材料股份有限公司 | Three-layer composite self-lubricating material and preparation method thereof |
-
2021
- 2021-05-08 CN CN202110500073.7A patent/CN113321883A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049364A (en) * | 1989-08-07 | 1991-02-20 | 斯塔特尼怀茨库尼乌斯塔夫物料公司 | The matrix material and the manufacture method thereof that are used for sliding surface |
| CN103333442A (en) * | 2013-06-08 | 2013-10-02 | 山东瑞特新材料有限公司 | Preparation method of TiO2-SiC-fiber filled polytetrafluoroethylene composite material |
| WO2016034827A1 (en) * | 2014-09-05 | 2016-03-10 | Centre Technique Des Industries Mecaniques | Matériau composite autolubrifiant |
| CN112608783A (en) * | 2020-12-14 | 2021-04-06 | 合肥波林新材料股份有限公司 | Three-layer composite self-lubricating material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王晓波 等: "SiO2填充聚四氟乙烯复合材料的摩擦学行为研究", 《润滑与密封》 * |
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