CN117924906B - Nano composite high-performance self-lubricating wear-resistant engineering plastic composition - Google Patents
Nano composite high-performance self-lubricating wear-resistant engineering plastic composition Download PDFInfo
- Publication number
- CN117924906B CN117924906B CN202410105255.8A CN202410105255A CN117924906B CN 117924906 B CN117924906 B CN 117924906B CN 202410105255 A CN202410105255 A CN 202410105255A CN 117924906 B CN117924906 B CN 117924906B
- Authority
- CN
- China
- Prior art keywords
- fluororesin
- polyether ketone
- aromatic polyether
- ketone resin
- nano
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920006351 engineering plastic Polymers 0.000 title claims abstract description 26
- 239000000203 mixture Substances 0.000 title claims abstract description 21
- 239000002114 nanocomposite Substances 0.000 title claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 59
- 229920005989 resin Polymers 0.000 claims abstract description 59
- 229920001643 poly(ether ketone) Polymers 0.000 claims abstract description 54
- 125000003118 aryl group Chemical group 0.000 claims abstract description 51
- 239000002086 nanomaterial Substances 0.000 claims abstract description 32
- -1 transition metal sulfide Chemical class 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 14
- 229910052582 BN Inorganic materials 0.000 claims abstract description 10
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 10
- 239000002105 nanoparticle Substances 0.000 claims abstract description 7
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 25
- 229920002530 polyetherether ketone Polymers 0.000 claims description 25
- 238000005299 abrasion Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- 210000000988 bone and bone Anatomy 0.000 claims description 6
- 239000005548 dental material Substances 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 5
- 239000004695 Polyether sulfone Substances 0.000 claims description 4
- 229920006026 co-polymeric resin Polymers 0.000 claims description 4
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- 229920006393 polyether sulfone Polymers 0.000 claims description 4
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical compound FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- MHWZQNGIEIYAQJ-UHFFFAOYSA-N molybdenum diselenide Chemical compound [Se]=[Mo]=[Se] MHWZQNGIEIYAQJ-UHFFFAOYSA-N 0.000 claims description 3
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002064 nanoplatelet Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 19
- 239000000805 composite resin Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000002135 nanosheet Substances 0.000 description 8
- 239000002131 composite material Substances 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 229920002313 fluoropolymer Polymers 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000013329 compounding Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- KHXKESCWFMPTFT-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2-trifluoroethenoxy)propane Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)C(F)(F)F KHXKESCWFMPTFT-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 1
- 229910016001 MoSe Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
-
- 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
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
Landscapes
- 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)
Abstract
The invention discloses a nanocomposite high-performance self-lubricating wear-resistant engineering plastic composition, which comprises aromatic polyether ketone resin, fluororesin and nano materials, wherein the mass ratio of the aromatic polyether ketone resin to the fluororesin is 99:1-70:30, the mass ratio of the sum of the aromatic polyether ketone resin and the fluororesin to the nano materials is 99.9:0.1-95:5, the fluororesin is uniformly distributed in the aromatic polyether ketone resin in a micron or nano particle shape, the nano materials are uniformly distributed in the aromatic polyether ketone resin and the fluororesin in a particle shape in a nano scale, the aromatic polyether ketone resin, the fluororesin and the nano material composition are uniformly distributed as a whole, and the nano materials comprise at least one of hexagonal boron nitride and transition metal sulfide. The invention can greatly reduce the dynamic friction coefficient of the resin compound and improve the self-lubricating property and the friction resistance of the resin compound.
Description
Technical Field
The invention belongs to the technical field of composite resins, and particularly relates to a nano composite aromatic polyether ketone resin and a molded product thereof.
Background
The self-lubricating wear-resistant engineering plastic is a high molecular material with low friction coefficient, excellent wear resistance and self-lubricity, and is widely applied to manufacturing wear-resistant parts, such as gears, bearings, piston rings and the like, and can replace metal and traditional composite materials in the fields of automobiles, household appliances, machinery and the like. The self-lubricating wear-resistant material has wide application in the field of biological materials, has good compatibility with human bodies, and can be used for manufacturing artificial joints, bones, dental materials and the like.
Generally, thermoplastic polymers that can be used as a base material of the self-lubricating abrasion-resistant engineering plastic include high molecular weight polyethylene (UHMWPE), nylon (PA), polyoxymethylene (POM), and polyether ether ketone (PEEK). The polymer material capable of being used as self-lubricating and wear-resistant must meet the requirements of the matrix material on the performances of temperature resistance, bearing capacity and the like under specific environments and working conditions. With the continuous improvement of the social technical level and the demands, the application of the antifriction and wear-resistant engineering plastics in various fields becomes wider, and single engineering plastics often cannot simultaneously meet the demands of the system on the self-lubricity and wear resistance of the materials, so that the engineering plastic materials are required to be modified according to the service environment and the working condition characteristics so as to meet wider use demands. Therefore, improvement of self-lubricity and wear resistance of engineering plastics has been a subject of long-term attention and importance.
The aromatic polyether ketone resin, such as polyether ether ketone, is one semi-crystalline aromatic thermoplastic engineering plastic, and has molecular structure containing great amount of rigid benzene ring, flexible ether bond and carbonyl for strengthening intermolecular force, excellent heat resistance, long-term heat resistance over 250 deg.c, excellent corrosion resistance, radiation resistance, fatigue resistance, excellent size stability, no toxicity, no odor, etc. and may be produced into various rod, pipe, sheet, film, fiber and other product via injection molding, extrusion molding, compression molding, fused deposition molding, 3D printing, etc. and is used widely in aviation, electronic equipment, medical treatment, automobile, etc. Even in the case of sliding members such as gears and bearings, sliding members made of engineering plastics are used instead of sliding members made of metals. However, in a sliding member used under conditions of high load, high temperature, high speed rotation, etc., the thermoplastic resin as described above is insufficient in sliding property, or abrasion, heat-melting of the surface, breakage, etc. occur. In view of this, various efforts have been made to improve the lubricity of thermoplastic resins in order to apply them more widely to sliding parts in order to prevent deformation and abrasion of the material surface under high load, high speed or high temperature conditions. For example, PEEK is modified by adding glass fibers, carbon fibers, aramid fibers, graphite, and the like.
The friction and wear characteristics of engineering plastics or polymers mainly depend on the inherent characteristics of chemical components, molecular structures and the like of polymer materials, and the chemical composition of the surfaces of the materials can be regulated by a compounding method, so that the friction and wear properties of the surfaces are improved, and meanwhile, the mechanical properties of the materials are further improved. The following two methods are mainly used for improving and enhancing the surface friction performance of engineering plastics. First, lubricating particles with low shear strength and self-lubricity are added to the polymer matrix to reduce the coefficient of friction of the material. Second, hard particles or fibers are added to the polymer matrix to improve the wear resistance of the material. With the further improvement of the friction and wear performance requirements of engineering plastics in the engineering application field, a mode of adding an anti-wear agent and a lubricant together is adopted, so that the self-lubricating wear-resistant engineering plastics with good comprehensive performance is obtained.
Polyetheretherketone resins have shown relatively good surface lubricity compared to other thermoplastic resins and are practically used in sliding parts of some machines such as gears, bearings and the like. However, under severe application conditions such as high load, the surface lubricity and abrasion resistance are sometimes insufficient. Therefore, it is highly desirable to develop a self-lubricating wear-resistant engineering plastic composition to improve the lubricity and wear resistance of the material.
Disclosure of Invention
The invention mainly solves the technical problem of providing a nano composite high-performance self-lubricating wear-resistant engineering plastic composition, and the dynamic friction coefficient of the prepared nano composite material can be as low as below 0.2 and even 0.11, so that super self-lubrication and friction resistance are realized.
In order to solve the technical problems, the invention adopts a technical scheme that: a nano composite high-performance self-lubricating wear-resistant engineering plastic composition comprises aromatic polyether ketone resin, fluororesin and nano materials;
The mass ratio of the aromatic polyether ketone resin to the fluororesin is 99:1-70:30, and the mass ratio of the sum of the aromatic polyether ketone resin and the fluororesin to the nanomaterial is 99.9:0.1-95:5;
The fluororesin is uniformly distributed in the aromatic polyether ketone resin in the form of micron or nano particles, the nano material is uniformly distributed in the aromatic polyether ketone resin and the fluororesin in the form of particles in a nano scale, and the aromatic polyether ketone resin, the fluororesin and the nano material composition are uniformly distributed as a whole;
the nanomaterial includes at least one of hexagonal boron nitride and a transition metal sulfide.
Further, the fluororesin is dispersed in the aromatic polyether ketone resin in a powder state or after melting.
Further, the thickness of the hexagonal boron nitride nano-sheet is tens of nanometers to tens of nanometers, and the transverse or longitudinal dimension of the nano-sheet is less than 600nm.
Further, the transition metal sulfide includes at least one of molybdenum diselenide, tungsten disulfide, and molybdenum disulfide.
Further, the thickness of the nano-sheet of molybdenum disulfide is tens of nanometers, and the transverse dimension of the nano-sheet is hundreds of nanometers to tens of micrometers.
Further, the aromatic polyether ketone resin is at least one of polyether ether ketone, polyether ketone and polyether sulfone ketone copolymer resin.
Further, the fluororesin is at least one of polytetrafluoroethylene, perfluoroethylene-propylene copolymer, ethylene-tetrafluoroethylene copolymer, perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene copolymer.
The invention also provides a formed product, which is prepared from the nano composite high-performance self-lubricating wear-resistant engineering plastic composition through mould pressing, extrusion or injection molding.
Further, the molded article is used as a high-performance self-lubricating and wear-resistant member.
Further, the molded product is used as a variable speed transmission and steering component, and can also be used for manufacturing artificial joints, bones and dental materials.
The beneficial effects of the invention are at least as follows:
The fluororesin of the invention is uniformly distributed in the aromatic polyether ketone resin matrix in the form of micron or nanometer particles, the nanometer materials are uniformly distributed in the aromatic polyether ketone resin and the fluororesin in the form of particles in the nanometer scale, the aromatic polyether ketone resin, the fluororesin and the nanometer material composition are uniformly distributed as a whole, the dynamic friction coefficient of the prepared nanometer composite material can be as low as below 0.2 and even 0.11, the dynamic friction coefficient of the resin composite can be greatly reduced, the self-lubricating property and the friction resistance of the resin composite are improved, and the originally excellent PEEK mechanical property after nanometer composite is maintained.
Drawings
FIG. 1 is a scanning electron microscope image of PEEK/MoS 2 (99/0.1);
FIG. 2 is an SEM photograph of a PEEK/fluororesin blend;
FIG. 3 is the variation of kinetic coefficient of friction (COF) with time of friction for PEEK/FEP/MoS 2 (80/20/0.5) samples;
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Examples: a nano composite high-performance self-lubricating wear-resistant engineering plastic composition comprises aromatic polyether ketone resin, fluororesin and nano materials;
The mass ratio of the aromatic polyether ketone resin to the fluororesin is 99:1-70:30, and the mass ratio of the sum of the aromatic polyether ketone resin and the fluororesin to the nanomaterial is 99.9:0.1-95:5; by setting the ratio in the above range, a molded article having a low dynamic friction coefficient and maintained mechanical properties can be produced, and if the mass ratio of the nanomaterial to the aromatic polyether ketone resin exceeds 5%, the strength will be lowered, more preferably in the range of 99.9:0.1 to 95:3;
the fluororesin is uniformly distributed in the aromatic polyether ketone resin in the form of micron or nano particles, the nano material is dispersed in the aromatic polyether ketone resin and the fluororesin in the form of particles in a nano scale, the aromatic polyether ketone resin, the fluororesin and the nano material composition are uniformly distributed as a whole, and if the average dispersion particle diameter is too large, enough lubricity cannot be obtained and good mechanical properties can not be maintained;
the original excellent mechanical properties of the aromatic polyether ketone resin are maintained after the composite modification, the less the fluororesin and the nano particles are added, the better the strength performance is maintained, but the addition of the fluoroplastic and a small amount of nano materials can slightly improve the tensile property and improve the toughness and the heat resistance;
the nanomaterial includes at least one of hexagonal boron nitride (h-BN) and a transition metal sulfide.
The fluororesin is dispersed in the aromatic polyether ketone resin in a powder state or after being melted.
The thickness of the hexagonal boron nitride nanosheets ranges from tens of nanometers to tens of nanometers, and the transverse or longitudinal dimension of the nanosheets is less than 600nm;
As the transition metal sulfide, from the viewpoint of surface lubrication, the transition metal sulfide includes at least one of molybdenum diselenide (MoSe 2), tungsten disulfide (WS 2), and molybdenum disulfide (MoS 2);
preferably, the transition metal sulfide is molybdenum disulfide.
In particular, preferably, nano hexagonal boron nitride is used together with molybdenum disulfide.
The thickness of the nano-sheet of molybdenum disulfide is tens of nanometers, and the transverse dimension of the nano-sheet is hundreds of nanometers to tens of micrometers. Molybdenum disulfide of hexagonal boron nitride and transition metal sulfides, collectively referred to as inorganic graphene analogs, preferably, the nanomaterial has a particle size of less than 300nm;
From the viewpoint of obtaining a low dynamic friction coefficient and preventing melting of the resin surface, a nano hexagonal boron nitride material having high thermal conductivity is preferable.
The aromatic polyether ketone resin is at least one of polyether ether ketone, polyether ketone and polyether sulfone ketone copolymer resin;
preferably, the aromatic polyether ketone resin is at least one of polyether ether ketone (PEEK) and polyether sulfone ketone (PESK) copolymer resin;
More preferably polyetheretherketone.
The aromatic polyether ketone resin and the compound thereof can be melt processed under the condition of 370-400 ℃ to obtain low friction coefficient.
The melting point of the aromatic polyether ketone resin is preferably 300℃or higher, more preferably 320℃or higher. By setting the melting point, which is measured by a Differential Scanning Calorimeter (DSC), in the above range, the heat resistance of the obtained molded article can be improved.
The fluororesin is at least one of Polytetrafluoroethylene (PTFE), perfluoroethylene propylene copolymer (FEP), ethylene tetrafluoroethylene copolymer (ETFE), and copolymer of perfluoropropyl perfluorovinyl ether and Polytetrafluoroethylene (PFA).
From the viewpoints of surface lubricity and processability, a melt-extrusion-processable fluoroplastic is preferable.
A shaped article is prepared from the self-lubricating antiwear nano-composite engineering plastics through die pressing, extruding or injection moulding. In this example, as a method for producing the resin composite of the present invention, a molding processing apparatus commonly used for compounding and blending plastics, such as an internal mixer, a kneader, a screw extruder, or the like, may be used, and compounding may be performed under normal conditions. Preferably a twin-screw extruder, particularly preferably a twin-screw extruder having a screw structure with a large L/D;
The method for producing the resin composite of the present invention is preferably a method in which an aromatic polyether ketone resin, a fluororesin, and a nanomaterial are dry-blended in a predetermined ratio and then kneaded in a molten state. The aromatic polyether ketone resin and the nanomaterial are sufficiently melt-kneaded to obtain the resin composite of the present invention having a desired dispersion state. Since the dispersion state affects the dynamic friction coefficient and mechanical property of the molded product, the mixing method should be properly selected to ensure the uniform and fine dispersion state of the fluoroplastic and the nano material in the resin composite;
the fluororesin and the nanomaterial may be added to the aromatic polyether ketone resin in advance and then melt-kneaded, or may be added during the melt-kneading of the aromatic polyether ketone resin;
According to the resin compound, the dynamic friction coefficient of a molded body obtained by molding the resin compound can be controlled to be below 0.2 and even below 0.11, and the resin compound is more suitable for being applied as a high-performance self-lubricating wear-resistant engineering plastic part.
The molded product obtained by molding the resin composition has good lubricity, mechanical property, heat resistance, chemical resistance and solvent resistance, and is nontoxic and odorless. The molded product is applied to the fields of aerospace, electronic equipment, medical treatment, automobile manufacturing and the like. Can be used as gears, bearings, pistons, bearings and sealing components. Can also be used for manufacturing artificial joints, bones, dental materials and the like;
The molded article of the present invention can be molded by a usual molding method for a thermoplastic resin composition such as injection molding, hot press molding, extrusion molding, blow molding, calender molding, and mechanical cutting, depending on the type, application, and shape of the molded article to be produced, at a temperature not lower than the melting temperature of the aromatic polyether ketone resin. In addition, a combination of the above molding methods may also be employed.
The molded article is used as a high-performance self-lubricating and wear-resistant member.
The molded product is used as variable speed transmission and steering parts, such as gears, bearings, piston rings, sealing parts and the like, and replaces metal and traditional composite materials in the fields of automobiles, household appliances, machinery and the like, and also can be used for manufacturing artificial joints, bones and dental materials because of good compatibility with human bodies.
Fluoroplastics have many excellent properties such as excellent surface lubricity, good flame retardancy, stability, excellent electrical insulation properties, mechanical properties, ultra-high heat resistance, outstanding oil resistance, solvent resistance and abrasion resistance, good moisture resistance and low temperature resistance, and the like.
In addition, the nano h-BN has good chemical stability and extremely high thermal conductivity, and can prevent the resin surface from melting caused by friction heat generation so as to improve the friction performance of the material. The body MoS 2 can be prepared into lubricating grease for reducing friction and abrasion of the surface of the material because of the self lubricity. Unlike the bulk MoS 2, the single or few layer nano MoS 2 also has negative compression effects, intrinsic piezoelectricity, and extremely high thermal and chemical stability, and its dispersion on the surface of the material is beneficial to reducing the coefficient of friction, thereby improving the wear resistance.
In order to further improve the surface lubricity of PEEK, besides the method of adding fluoroplastic particles or blending and compounding with fluoroplastic to improve friction and abrasion performance, the polyether ketone resin/fluororesin/nanomaterial composite material prepared by using the high specific surface area of the nanomaterial and small addition and good dispersion is expected to further reduce the dynamic friction coefficient and improve the surface lubricity of the nanomaterial;
The present invention is described below with reference to examples, but the present invention is not limited to the examples.
< Preparation of compression molded article >
Compression molding at 390 deg.C under 5MPa to obtain disc with thickness of 1mm and diameter of 20 mm.
< Determination of dynamic Friction coefficient >)
The sheet prepared in the above manner was cut into test pieces 3cm long, 3cm wide and 3cm thick, and the test pieces were reciprocally tested using a Bruker multifunctional frictional wear tester (manufactured by UMT-Tribolab Co.) with a steel ball having a diameter of 4mm as a friction pair. The dynamic friction coefficient is measured under the conditions of room temperature, frequency of 5Hz, reciprocating stroke of 5mm and load of 5-20N.
< Calculation of average dispersed particle size >)
The sheet prepared by mould pressing is brittle broken after being cooled by liquid nitrogen, and the brittle fracture surface is used for observation by a scanning electron microscope.
And observing the section of the brittle fracture sheet after metal spraying by using a field emission scanning electron microscope (JEOLJSM-7401). The image obtained by observation with a microscope was subjected to statistical processing to obtain the average dispersed particle diameter of the dispersed phase.
The following materials were used in the examples and comparative examples:
aromatic polyetherketone resin: polyether ether ketone (trade name: 550P, manufactured by Jilin middle-ground polymer materials Co., ltd.);
fluororesin (trade name: DS601, manufactured by Shandong the Eastern Mountain Shenzhou) and the like;
Hexagonal boron nitride (h-BN) and molybdenum disulfide (MoS 2) (manufactured by michelin corporation);
< examples 1 to 4>
The aromatic polyether ketone resin, the fluororesin and the nanomaterial were mixed in advance in the ratio (mass ratio) shown in table 1, and the mixture was melt-kneaded using a twin-screw extruder (L/d=50) (trade name: U2 twin-screw extruder, manufactured by Jiangsu yue-zhi technology co.) at a temperature of 390 ℃ and a screw speed of 400rpm to obtain a resin composite. And (3) preparing a wafer from the obtained resin composite by the method, measuring the dynamic friction coefficient, freezing and brittle fracture of the die-pressed sheet, observing the section by using an electron microscope, and analyzing the image to calculate the average dispersion particle size of the nano material. In addition, tensile bars were molded according to astm d638 and tested for tensile strength using GOTECH-2000.
Test pieces were prepared by the above method using only the aromatic polyether ketone resin, and the dynamic friction coefficient, yield strength, and the like were measured.
FIG. 1 is a scanning electron microscope image of PEEK/h-BN, moS 2 (99/0.1), with some of the smallest spots seen as h-BN nanoparticles.
Fig. 2 is an SEM photograph of a PEEK/fluororesin blend. The fluororesin is uniformly dispersed in the PEEK matrix in a small size, where a: PEEK, B: PEEK/fluororesin (90/10), C: PEEK/fluororesin (80/20), D: PEEK/fluororesin (70/30).
Comparative examples 1 to 2>
Test pieces were prepared by the above-described method using an aromatic polyether ketone resin and an aromatic polyether ketone resin/fluororesin composite, and dynamic friction coefficients, yield strengths, and the like were measured.
TABLE 1
As can be seen from Table 1, comparison with the results of comparative examples 1 and 2 shows that the addition of nanoparticles can effectively improve the reduction of dynamic friction coefficient with little change in strength.
FIG. 3 is a graph showing the change in coefficient of kinetic friction (COF) over time for PEEK/FEP/MoS 2 (80/20/0.5) samples.
The nano modified resin composite of the present invention is applicable as a molding material for automobile parts, machine parts, etc. requiring high lubrication and wear resistance, and is used as gears, bearings, pistons, bearings, sealing members. Can also be used for manufacturing artificial joints, bones, dental materials and the like.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A nano-composite high-performance self-lubricating wear-resistant engineering plastic composition is characterized in that: comprises aromatic polyether ketone resin, fluororesin and nano material;
The mass ratio of the aromatic polyether ketone resin to the fluororesin is 99:1-70:30, and the mass ratio of the sum of the aromatic polyether ketone resin and the fluororesin to the nanomaterial is 99.9:0.1-95:5;
The fluororesin is uniformly distributed in the aromatic polyether ketone resin in the form of micron or nano particles, the nano material is uniformly distributed in the aromatic polyether ketone resin and the fluororesin in the form of particles in a nano scale, and the aromatic polyether ketone resin, the fluororesin and the nano material composition are uniformly distributed as a whole;
The fluororesin is dispersed in the aromatic polyether ketone resin after being melted;
the nanomaterial includes at least one of hexagonal boron nitride and a transition metal sulfide;
the transition metal sulfide comprises at least one of molybdenum diselenide, tungsten disulfide and molybdenum disulfide;
The fluororesin is at least one of perfluoroethylene propylene copolymer and ethylene tetrafluoroethylene copolymer.
2. The nanocomposite, high performance, self-lubricating, abrasion resistant engineering plastic composition of claim 1, wherein: the transverse or longitudinal dimension of the nanoplatelets is less than 600nm.
3. The nanocomposite, high performance, self-lubricating, abrasion resistant engineering plastic composition of claim 1, wherein: the aromatic polyether ketone resin is at least one of polyether ether ketone, polyether ketone and polyether sulfone ketone copolymer resin.
4. A molded article characterized in that: which is produced by molding, extrusion or injection molding the nanocomposite, high-performance, self-lubricating, abrasion-resistant engineering plastic composition according to any one of claims 1 to 3.
5. The molded article according to claim 4, wherein: the molded article is used as a high-performance self-lubricating and wear-resistant member.
6. The molded article according to claim 4 or 5, wherein: the molded product is used as a variable speed transmission and steering component and can also be used for manufacturing artificial joints, bones and dental materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410105255.8A CN117924906B (en) | 2024-01-25 | 2024-01-25 | Nano composite high-performance self-lubricating wear-resistant engineering plastic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410105255.8A CN117924906B (en) | 2024-01-25 | 2024-01-25 | Nano composite high-performance self-lubricating wear-resistant engineering plastic composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117924906A CN117924906A (en) | 2024-04-26 |
| CN117924906B true CN117924906B (en) | 2024-08-30 |
Family
ID=90766157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410105255.8A Active CN117924906B (en) | 2024-01-25 | 2024-01-25 | Nano composite high-performance self-lubricating wear-resistant engineering plastic composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117924906B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788403A (en) * | 2012-10-31 | 2014-05-14 | 合肥杰事杰新材料股份有限公司 | Wear-resistant filling material, wear-resistant composite material prepared from same and preparation method for composite material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200166077A1 (en) * | 2018-11-26 | 2020-05-28 | Etienne Henrique Jensen | Process of manufacturing self-lubricating elements with nanometric lubricants |
| CN110564259B (en) * | 2019-08-01 | 2020-09-11 | 厦门大学 | Preparation method of self-lubricating coating material with micro-nano ball effect |
-
2024
- 2024-01-25 CN CN202410105255.8A patent/CN117924906B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788403A (en) * | 2012-10-31 | 2014-05-14 | 合肥杰事杰新材料股份有限公司 | Wear-resistant filling material, wear-resistant composite material prepared from same and preparation method for composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117924906A (en) | 2024-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5702385B2 (en) | Resin composition and molded product | |
| Werner et al. | Tribological behaviour of carbon-nanofibre-reinforced poly (ether ether ketone) | |
| Padhan et al. | Tribology of Poly (etherketone) composites based on nano-particles of solid lubricants | |
| US9085695B2 (en) | Polymer compound as well as structural parts produced using the compound | |
| KR102476625B1 (en) | Use of polymeric materials based on polyetherketoneketones for wear reduction | |
| WO2013088964A1 (en) | Resin composition and molded article | |
| JPS6158093B2 (en) | ||
| Saravanan et al. | Sustainable tribology: Processing and characterization of multiscale thermoplastic composites within hydropower applications | |
| WO2019215304A1 (en) | Polymer compositions | |
| US20150126663A1 (en) | Tribological aromatic polyimide compositions | |
| CN117924906B (en) | Nano composite high-performance self-lubricating wear-resistant engineering plastic composition | |
| Roshan et al. | Friction and wear behavior of short carbon fibers milled polyphenylene sulfide composites | |
| CN117757243A (en) | Nanocomposite resin composite and resin molded article | |
| JPS6365227B2 (en) | ||
| Li | Tribological properties of polyimide composites filled with glass fibre and graphite | |
| JPH0339110B2 (en) | ||
| JP3703219B2 (en) | Fluororesin composition | |
| CN116622225B (en) | Polyamide composition and preparation method and application thereof | |
| Gulesen et al. | Mechanical and Tribological Performance of Polypropylene/Tin Powder Composites | |
| Jerina et al. | Tribology of the PEEK Polymer Filled with Solid Lubricants | |
| Eatemad et al. | FRICTION AND WEAR OF POLYMERIC MATERIALS REINFORCED BY CARBON NANOTUBES | |
| JPH04258653A (en) | Tetrafluoroethylene resin composition | |
| JPH04331819A (en) | Retainer for rolling bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |