CN112646314A - High-temperature-resistant and wear-resistant PEEK matrix composite material and preparation method thereof - Google Patents
High-temperature-resistant and wear-resistant PEEK matrix composite material and preparation method thereof Download PDFInfo
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- 239000004696 Poly ether ether ketone Substances 0.000 title claims abstract description 86
- 229920002530 polyetherether ketone Polymers 0.000 title claims abstract description 86
- 239000002131 composite material Substances 0.000 title claims abstract description 70
- 239000011159 matrix material Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 title claims abstract 22
- 239000000463 material Substances 0.000 claims abstract description 49
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003365 glass fiber Substances 0.000 claims abstract description 44
- 239000000314 lubricant Substances 0.000 claims abstract description 34
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 33
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 31
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 24
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 22
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 18
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 18
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims abstract description 13
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims abstract description 13
- 239000004698 Polyethylene Substances 0.000 claims abstract description 13
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 13
- 229960003237 betaine Drugs 0.000 claims abstract description 13
- 239000004519 grease Substances 0.000 claims abstract description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920000573 polyethylene Polymers 0.000 claims abstract description 13
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 13
- 239000008117 stearic acid Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 26
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 18
- 239000004917 carbon fiber Substances 0.000 claims description 18
- 238000002791 soaking Methods 0.000 claims description 14
- 238000005469 granulation Methods 0.000 claims description 13
- 230000003179 granulation Effects 0.000 claims description 13
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 12
- 239000000376 reactant Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 229920000858 Cyclodextrin Polymers 0.000 claims description 6
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims description 6
- 229940006186 sodium polystyrene sulfonate Drugs 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 238000005453 pelletization Methods 0.000 claims 1
- 238000012986 modification Methods 0.000 abstract description 7
- 230000004048 modification Effects 0.000 abstract description 7
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- 229910001220 stainless steel Inorganic materials 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- 150000001721 carbon Chemical class 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920003247 engineering thermoplastic Polymers 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
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- 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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a high-temperature-resistant and wear-resistant PEEK matrix composite material and a preparation method thereof, wherein the composite material comprises the following components in parts by weight: 100 parts of PEEK base material, 0-30 parts of polytetrafluoroethylene, 5-10 parts of modified carbon fiber, 6-9 parts of modified glass fiber, 10-15 parts of nano silicon carbide and 2-4 parts of composite lubricant, wherein the lubricant comprises the following components in parts by weight: 4-6 parts of stearic acid, 5-8 parts of betaine, 2-4 parts of silicone grease and 6-8 parts of polyethylene wax. Preparation: (1) mixing the components and drying to obtain a mixed material; (2) and extruding and granulating the mixed material to obtain the high-temperature-resistant and wear-resistant PEEK matrix composite material. According to the composite material disclosed by the invention, the PEEK is subjected to composite modification by adding materials such as polytetrafluoroethylene, modified carbon fiber, modified glass fiber and nano silicon carbide, so that the wear resistance and self-lubricating effect of the composite material are improved, the problem that the high temperature resistance and mechanical property of the PEEK material need to be sacrificed for a long time when the mechanical processing performance of the PEEK material is improved is solved, and meanwhile, the high temperature resistance of the composite material is enhanced.
Description
Technical Field
The invention relates to the technical field of composite material modification, in particular to a high-temperature-resistant and wear-resistant PEEK matrix composite material and a preparation method thereof.
Background
PEEK (polyether ether ketone) is a semi-crystalline engineering thermoplastic plastic, is one of the highest-temperature-resistant engineering plastics, is one of the accepted thermoplastic materials with the highest performance all over the world, has excellent performances such as high temperature resistance, excellent mechanical property, good self-lubricating property, easy processing, chemical corrosion resistance, flame retardance, peeling resistance, irradiation resistance, stable insulation property, hydrolysis resistance and easy processing compared with other special engineering plastics, is widely applied to the fields of aerospace, automobiles, electronic and electrical, medical treatment, food processing and the like, and has a wide development and utilization prospect.
PEEK (polyetheretherketone) materials are tough, strong, rigid and creep resistant, but their wear resistance cannot meet the requirements of some special fields, and they need to be modified. At present, most of PEEK (polyetheretherketone) materials are modified by adding 30% of glass fiber reinforced or 30% of carbon fiber reinforced modified materials, but because the compatibility between the glass fiber or the carbon fiber and the PEEK is poor, the mechanical strength of the reinforced PEEK is limited, the high temperature resistance and the wear resistance are also limited, and the high reinforcing effect cannot be achieved.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant and wear-resistant PEEK matrix composite material which has good high-temperature-resistant, wear-resistant and self-lubricating effects and solves the problem that the high-temperature-resistant performance and the mechanical performance are sacrificed for a long time when the mechanical processing performance of the PEEK material is improved; the invention also aims to provide a simple preparation method of the high-temperature-resistant and wear-resistant PEEK matrix composite material.
The invention is realized by the following technical scheme:
the high-temperature-resistant and wear-resistant PEEK matrix composite material is characterized by comprising the following components in parts by weight: 100 parts of PEEK base material, 0-30 parts of polytetrafluoroethylene, 5-10 parts of modified carbon fiber, 6-9 parts of modified glass fiber, 10-15 parts of nano silicon carbide and 2-4 parts of composite lubricant, wherein the lubricant comprises the following components in parts by weight: 4-6 parts of stearic acid, 5-8 parts of betaine, 2-4 parts of silicone grease and 6-8 parts of polyethylene wax. According to the high-temperature-resistant and wear-resistant PEEK matrix composite material, the PEEK is subjected to composite modification by adding materials such as polytetrafluoroethylene, modified carbon fibers and modified glass fibers, so that the wear resistance and self-lubricating effect of the PEEK are improved, the problem that the mechanical processing performance of the PEEK material is improved for a long time at the expense of high-temperature resistance and mechanical property is solved, and the high-temperature resistance of the PEEK matrix composite material is enhanced.
Further, the preparation method of the lubricant comprises the following steps: adding 4-6 parts by weight of stearic acid, 5-8 parts by weight of betaine, 2-4 parts by weight of silicone grease and 6-8 parts by weight of polyethylene wax into a reaction kettle, and reacting at 60-70 ℃ for 1-3 hours to obtain a product, namely the lubricant. Preferably, the reaction kettle is a stainless steel reaction kettle.
Further, the preparation method of the modified carbon fiber comprises the following steps:
(1) dissolving 10-20 parts by weight of sodium polystyrene sulfonate in cyclohexanone to form saturated mixed solution;
(2) and adding 5-10 parts of carbon fiber into the mixed solution for soaking, taking out the carbon fiber after soaking, and drying to obtain the modified carbon fiber.
Further, the preparation method of the modified carbon fiber comprises the following steps: the soaking time in the step (2) is 1-2 hours; the drying temperature is 60-80 ℃, and the drying time is 1-3 hours.
Further, the preparation method of the modified glass fiber comprises the following steps:
(1) adding 10-15 parts of cyclodextrin, 60-80 parts of cyclohexane, 2-4 parts of MDI and 30-40 parts of glass fiber into a reaction kettle according to the parts by weight, and reacting for 2-3 hours at the temperature of 60-70 ℃; preferably, the reaction kettle is a stainless steel reaction kettle;
(2) and removing the solvent after the reaction, and then drying to obtain the modified glass fiber.
Further, the preparation method of the modified glass fiber comprises the following steps: and (3) after the reaction in the step (2), adding the reactant into a rotary evaporator to remove the solvent, and then drying for 1-2 hours at 50-60 ℃ to obtain the modified glass fiber.
Further, the nano silicon carbide is silicon carbide powder with the diameter of 200-400 nm.
A preparation method of a high-temperature-resistant and wear-resistant PEEK matrix composite material is characterized by comprising the following steps:
(1) uniformly mixing 100 parts of PEEK base material, 0-30 parts of polytetrafluoroethylene, 5-10 parts of modified carbon fiber, 6-9 parts of modified glass fiber, 10-15 parts of nano silicon carbide and 2-4 parts of composite lubricant, and drying to obtain a mixed material;
(2) and extruding and granulating the mixed material to obtain the high-temperature-resistant and wear-resistant PEEK matrix composite material.
Further, in the step (1), 100 parts of PEEK base material, 0-30 parts of polytetrafluoroethylene, 5-10 parts of modified carbon fiber, 6-9 parts of modified glass fiber, 10-15 parts of nano silicon carbide and 2-4 parts of composite lubricant are added into a mixer to be uniformly mixed, and the mixture is dried in an oven at the temperature of 130-150 ℃ for 2-3 hours after being mixed, so that the mixed material is obtained.
Further, adding the mixed material into a double-screw granulator for extrusion granulation to obtain a high-temperature-resistant and wear-resistant PEEK matrix composite material; and the granulation temperature of the double-screw granulator is as follows: the temperature of the first area of the double-screw granulator is 280-300 ℃, the temperature of the second area is 360-380 ℃, the temperature of the third area is 360-380 ℃, the temperature of the fourth area is 350-380 ℃, and the temperature of the die orifice is 340-350 ℃; the granules obtained by granulation are cylindrical granules with the diameter of 1-2 mm and the length of 4-5 mm.
The invention has the beneficial effects that:
according to the high-temperature-resistant and wear-resistant PEEK matrix composite material, the PEEK is subjected to composite modification by adding materials such as polytetrafluoroethylene, modified carbon fibers, modified glass fibers and nano silicon carbide, so that the wear resistance and the self-lubricating effect of the PEEK are improved, the problem that the high-temperature-resistant performance and the mechanical performance are sacrificed for improving the machining performance of the PEEK material for a long time is solved, and the high-temperature-resistant performance of the PEEK matrix composite material is enhanced, wherein the thermal deformation temperature of the PEEK matrix composite material is up to 310 plus material 315 ℃, the long-term heat resistance index is up to 280 ℃, and the friction coefficient is 0. The preparation method of the high-temperature-resistant and wear-resistant PEEK matrix composite material is simple, mild in preparation conditions and low in cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a graph showing the change of friction coefficient of a conventional modified PEEK material during friction;
FIG. 2 is a graph showing the change of the friction coefficient of the high temperature and wear resistant PEEK matrix composite material of the present invention during friction.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A high-temperature-resistant and wear-resistant PEEK matrix composite material comprises the following components in parts by weight: 100 parts of PEEK base material, 0 part of polytetrafluoroethylene, 8 parts of modified carbon fiber, 9 parts of modified glass fiber, 10 parts of nano silicon carbide and 3 parts of composite lubricant, wherein the lubricant comprises the following components in parts by weight: 6 parts of stearic acid, 6 parts of betaine, 2 parts of silicone grease and 7 parts of polyethylene wax. The nano silicon carbide is silicon carbide powder with the diameter of 200 nm.
The preparation method of the lubricant comprises the following steps: adding 6 parts by weight of stearic acid, 6 parts by weight of betaine, 2 parts by weight of silicone grease and 7 parts by weight of polyethylene wax into a stainless steel reaction kettle, and reacting for 2 hours at 60 ℃, wherein the obtained product after reaction is the lubricant.
The preparation method of the modified carbon fiber comprises the following steps:
(1) dissolving 12 parts by weight of sodium polystyrene sulfonate in cyclohexanone to form saturated mixed solution;
(2) and adding 9 parts of carbon fiber into the mixed solution, soaking for 1 hour, taking out the carbon fiber after soaking is finished, and drying for 2 hours at the temperature of 60 ℃ to obtain the modified carbon fiber.
The preparation method of the modified glass fiber comprises the following steps:
(1) adding 10 parts by weight of cyclodextrin, 70 parts by weight of cyclohexane, 2 parts by weight of MDI and 35 parts by weight of glass fiber into a stainless steel reaction kettle, and reacting for 3 hours at 60 ℃;
(2) after the reaction, the reactant is added into a rotary evaporator to remove the solvent, and then dried for 2 hours at the temperature of 55 ℃ to obtain the modified glass fiber.
The preparation method of the high-temperature-resistant and wear-resistant PEEK matrix composite material comprises the following steps:
(1) adding 100 parts of PEEK base material, 8 parts of modified carbon fiber, 9 parts of modified glass fiber, 10 parts of nano silicon carbide (silicon carbide powder with the diameter of 200 nm) and 3 parts of composite lubricant into a mixer, uniformly mixing, and drying in an oven at 150 ℃ for 2 hours after mixing to obtain a mixed material;
(2) adding the obtained mixed material into a double-screw granulator for extrusion granulation to obtain a high-temperature-resistant and wear-resistant PEEK matrix composite material; and the granulation temperature of the double-screw granulator is as follows: the temperature of a first area of the double-screw granulator is 280 ℃, the temperature of a second area of the double-screw granulator is 360 ℃, the temperature of a third area of the double-screw granulator is 360 ℃, the temperature of a fourth area of the double-screw granulator is 350 ℃, and the temperature of a die orifice of the double-screw granulator is 340 ℃; the resulting granules were cylindrical granules having a diameter of 1 mm and a length of 4 mm.
Example 2
A high-temperature-resistant and wear-resistant PEEK matrix composite material comprises the following components in parts by weight: 100 parts of PEEK base material, 10 parts of polytetrafluoroethylene, 7 parts of modified carbon fiber, 7 parts of modified glass fiber, 12 parts of nano silicon carbide and 4 parts of composite lubricant, wherein the lubricant comprises the following components in parts by weight: 5 parts of stearic acid, 8 parts of betaine, 3 parts of silicone grease and 6 parts of polyethylene wax. The nano silicon carbide is silicon carbide powder with the diameter of 400 nm.
The preparation method of the lubricant comprises the following steps: adding 5 parts by weight of stearic acid, 8 parts by weight of betaine, 3 parts by weight of silicone grease and 6 parts by weight of polyethylene wax into a stainless steel reaction kettle, and reacting at 70 ℃ for 1 hour to obtain a product, namely the lubricant.
The preparation method of the modified carbon fiber comprises the following steps:
(1) dissolving 15 parts by weight of sodium polystyrene sulfonate in cyclohexanone to form saturated mixed solution;
(2) and adding 5 parts of carbon fiber into the mixed solution, soaking for 2 hours, taking out the carbon fiber after soaking is finished, and drying the carbon fiber at the temperature of 80 ℃ for 1 hour to obtain the modified carbon fiber.
The preparation method of the modified glass fiber comprises the following steps:
(1) adding 13 parts by weight of cyclodextrin, 80 parts by weight of cyclohexane, 3 parts by weight of MDI and 30 parts by weight of glass fiber into a stainless steel reaction kettle, and reacting for 2 hours at 70 ℃;
(2) after the reaction, the reactant is added into a rotary evaporator to remove the solvent, and then the reactant is dried for 1 hour at the temperature of 60 ℃ to obtain the modified glass fiber.
The preparation method of the high-temperature-resistant and wear-resistant PEEK matrix composite material comprises the following steps:
(1) adding 100 parts of PEEK base material, 10 parts of polytetrafluoroethylene, 7 parts of modified carbon fiber, 7 parts of modified glass fiber, 12 parts of nano silicon carbide (silicon carbide powder with the diameter of 400 nm) and 4 parts of composite lubricant into a mixer, uniformly mixing, and drying in an oven at 130 ℃ for 3 hours after mixing to obtain a mixed material;
(2) adding the obtained mixed material into a double-screw granulator for extrusion granulation to obtain a high-temperature-resistant and wear-resistant PEEK matrix composite material; and the granulation temperature of the double-screw granulator is as follows: the temperature of a first area of the double-screw granulator is 285 ℃, the temperature of a second area of the double-screw granulator is 365 ℃, the temperature of a third area of the double-screw granulator is 365 ℃, the temperature of a fourth area of the double-screw granulator is 360 ℃, and the temperature of a die opening of the double-screw granulator is 345 ℃; the resulting granules were cylindrical granules having a diameter of 1 mm and a length of 5 mm.
Example 3
A high-temperature-resistant and wear-resistant PEEK matrix composite material comprises the following components in parts by weight: 100 parts of PEEK base material, 20 parts of polytetrafluoroethylene, 5 parts of modified carbon fiber, 6 parts of modified glass fiber, 13 parts of nano silicon carbide and 2 parts of composite lubricant, wherein the lubricant comprises the following components in parts by weight: 4 parts of stearic acid, 5 parts of betaine, 2 parts of silicone grease and 6 parts of polyethylene wax. The nano silicon carbide is silicon carbide powder with the diameter of 250 nm.
The preparation method of the lubricant comprises the following steps: adding 4 parts by weight of stearic acid, 5 parts by weight of betaine, 2 parts by weight of silicone grease and 6 parts by weight of polyethylene wax into a stainless steel reaction kettle, and reacting for 2 hours at 65 ℃, wherein the obtained product after reaction is the lubricant.
The preparation method of the modified carbon fiber comprises the following steps:
(1) dissolving 17 parts by weight of sodium polystyrene sulfonate in cyclohexanone to form saturated mixed solution;
(2) and adding 8 parts of carbon fiber into the mixed solution, soaking for 2 hours, taking out the carbon fiber after soaking is finished, and drying for 2 hours at 70 ℃ to obtain the modified carbon fiber.
The preparation method of the modified glass fiber comprises the following steps:
(1) adding 12 parts by weight of cyclodextrin, 60 parts by weight of cyclohexane, 2 parts by weight of MDI and 30 parts by weight of glass fiber into a stainless steel reaction kettle, and reacting for 3 hours at 65 ℃;
(2) after the reaction, the reactant is added into a rotary evaporator to remove the solvent, and then dried for 2 hours at 55 ℃ to obtain the modified glass fiber.
The preparation method of the high-temperature-resistant and wear-resistant PEEK matrix composite material comprises the following steps:
(1) adding 100 parts of PEEK base material, 20 parts of polytetrafluoroethylene, 5 parts of modified carbon fiber, 6 parts of modified glass fiber, 13 parts of nano silicon carbide (silicon carbide powder with the diameter of 250 nm) and 2 parts of composite lubricant into a mixer, uniformly mixing, and drying in an oven at 140 ℃ for 2 hours after mixing to obtain a mixed material;
(2) adding the obtained mixed material into a double-screw granulator for extrusion granulation to obtain a high-temperature-resistant and wear-resistant PEEK matrix composite material; and the granulation temperature of the double-screw granulator is as follows: the temperature of a first area of the double-screw granulator is 290 ℃, the temperature of a second area is 375 ℃, the temperature of a third area is 375 ℃, the temperature of a fourth area is 370 ℃, and the temperature of a die orifice is 345 ℃; the resulting granules were cylindrical granules having a diameter of 2 mm and a length of 4 mm.
Example 4
A high-temperature-resistant and wear-resistant PEEK matrix composite material comprises the following components in parts by weight: 100 parts of PEEK base material, 30 parts of polytetrafluoroethylene, 10 parts of modified carbon fiber, 8 parts of modified glass fiber, 15 parts of nano silicon carbide and 4 parts of composite lubricant, wherein the lubricant comprises the following components in parts by weight: 6 parts of stearic acid, 7 parts of betaine, 4 parts of silicone grease and 8 parts of polyethylene wax. The nano silicon carbide is silicon carbide powder with the diameter of 300 nm.
The preparation method of the lubricant comprises the following steps: adding 6 parts by weight of stearic acid, 7 parts by weight of betaine, 4 parts by weight of silicone grease and 8 parts by weight of polyethylene wax into a stainless steel reaction kettle, and reacting at 65 ℃ for 3 hours to obtain a product, namely the lubricant.
The preparation method of the modified carbon fiber comprises the following steps:
(1) dissolving 20 parts by weight of sodium polystyrene sulfonate in cyclohexanone to form saturated mixed solution;
(2) and adding 10 parts of carbon fiber into the mixed solution, soaking for 2 hours, taking out the carbon fiber after soaking is finished, and drying for 2 hours at 70 ℃ to obtain the modified carbon fiber.
The preparation method of the modified glass fiber comprises the following steps:
(1) adding 15 parts by weight of cyclodextrin, 80 parts by weight of cyclohexane, 4 parts by weight of MDI and 40 parts by weight of glass fiber into a stainless steel reaction kettle, and reacting for 3 hours at 65 ℃;
(2) after the reaction, the reactant is added into a rotary evaporator to remove the solvent, and then the reactant is dried for 2 hours at 50 ℃ to obtain the modified glass fiber.
The preparation method of the high-temperature-resistant and wear-resistant PEEK matrix composite material comprises the following steps:
(1) adding 100 parts of PEEK base material, 30 parts of polytetrafluoroethylene, 10 parts of modified carbon fiber, 8 parts of modified glass fiber, 15 parts of nano silicon carbide (silicon carbide powder with the diameter of 300 nm) and 4 parts of composite lubricant into a mixer, uniformly mixing, and drying in an oven at 145 ℃ for 2 hours after mixing to obtain a mixed material;
(2) adding the obtained mixed material into a double-screw granulator for extrusion granulation to obtain a high-temperature-resistant and wear-resistant PEEK matrix composite material; and the granulation temperature of the double-screw granulator is as follows: the temperature of a first area of the double-screw granulator is 300 ℃, the temperature of a second area is 380 ℃, the temperature of a third area is 380 ℃, the temperature of a fourth area is 380 ℃, and the temperature of a die orifice is 350 ℃; the resulting granules were cylindrical granules having a diameter of 2 mm and a length of 5 mm.
Test example 1
The high-temperature and wear-resistant PEEK matrix composite material prepared in the above example 3 and a traditional modified PEEK material (i.e., 30% of glass fiber reinforcement or 30% of carbon fiber reinforcement is added to the PEEK material for modification) are taken, and a friction coefficient is tested by a friction and wear tester: the results of measuring the change of the friction coefficient of the traditional modified PEEK material during friction are shown in FIG. 1; the results of measuring the change of the friction coefficient of the high temperature and abrasion resistant PEEK matrix composite material prepared in example 3 are shown in FIG. 2. As can be seen from the figure, the friction coefficient of the high-temperature resistant and wear resistant PEEK matrix composite material prepared in the example 3 is 0.2; according to the invention, the PEEK is subjected to composite modification by adding materials such as polytetrafluoroethylene, modified carbon fiber, modified glass fiber and nano silicon carbide, so that the wear resistance and self-lubricating effect of the PEEK are improved, and the problem that the mechanical processing performance of the PEEK material needs to be improved for a long time at the expense of sacrificing high temperature resistance and mechanical property is solved.
Test example 2
The high temperature and wear resistant PEEK matrix composite material prepared in the above example 4 is measured to have a thermal deformation temperature as high as 310-.
The above-mentioned preferred embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention. Obvious variations or modifications of the present invention are within the scope of the present invention.
Claims (10)
1. The high-temperature-resistant and wear-resistant PEEK matrix composite material is characterized by comprising the following components in parts by weight: 100 parts of PEEK base material, 0-30 parts of polytetrafluoroethylene, 5-10 parts of modified carbon fiber, 6-9 parts of modified glass fiber, 10-15 parts of nano silicon carbide and 2-4 parts of composite lubricant, wherein the lubricant comprises the following components in parts by weight: 4-6 parts of stearic acid, 5-8 parts of betaine, 2-4 parts of silicone grease and 6-8 parts of polyethylene wax.
2. The high temperature and wear resistant PEEK matrix composite material of claim 1, wherein the lubricant is prepared by a method comprising: adding 4-6 parts by weight of stearic acid, 5-8 parts by weight of betaine, 2-4 parts by weight of silicone grease and 6-8 parts by weight of polyethylene wax into a reaction kettle, and reacting at 60-70 ℃ for 1-3 hours to obtain a product, namely the lubricant.
3. The PEEK matrix composite material with high temperature resistance and wear resistance as claimed in claim 1, wherein the preparation method of the modified carbon fiber comprises the following steps:
(1) dissolving 10-20 parts by weight of sodium polystyrene sulfonate in cyclohexanone to form saturated mixed solution;
(2) and adding 5-10 parts of carbon fiber into the mixed solution for soaking, taking out the carbon fiber after soaking, and drying to obtain the modified carbon fiber.
4. The PEEK matrix composite material with high temperature resistance and wear resistance as claimed in claim 3, wherein the modified carbon fiber is prepared by the following steps: the soaking time in the step (2) is 1-2 hours; the drying temperature is 60-80 ℃, and the drying time is 1-3 hours.
5. The PEEK matrix composite material with high temperature resistance and wear resistance as claimed in claim 1, wherein the preparation method of the modified glass fiber comprises the following steps:
(1) adding 10-15 parts of cyclodextrin, 60-80 parts of cyclohexane, 2-4 parts of MDI and 30-40 parts of glass fiber into a reaction kettle according to the parts by weight, and reacting for 2-3 hours at the temperature of 60-70 ℃;
(2) and removing the solvent after the reaction, and then drying to obtain the modified glass fiber.
6. The PEEK matrix composite material with high temperature resistance and wear resistance as claimed in claim 5, wherein the preparation method of the modified glass fiber comprises the following steps: and (3) after the reaction in the step (2), adding the reactant into a rotary evaporator to remove the solvent, and then drying for 1-2 hours at 50-60 ℃ to obtain the modified glass fiber.
7. The PEEK matrix composite material of claim 1, wherein the nano-silicon carbide is silicon carbide powder with a diameter of 200-400 nm.
8. The process for the preparation of a high temperature and abrasion resistant PEEK matrix composite according to any one of claims 1 to 7, comprising the steps of:
(1) uniformly mixing 100 parts of PEEK base material, 0-30 parts of polytetrafluoroethylene, 5-10 parts of modified carbon fiber, 6-9 parts of modified glass fiber, 10-15 parts of nano silicon carbide and 2-4 parts of composite lubricant, and drying to obtain a mixed material;
(2) and extruding and granulating the mixed material to obtain the high-temperature-resistant and wear-resistant PEEK matrix composite material.
9. The preparation method of the high temperature and wear resistant PEEK matrix composite material as claimed in claim 8, wherein the step (1) comprises adding 100 parts of PEEK matrix material, 0-30 parts of polytetrafluoroethylene, 5-10 parts of modified carbon fiber, 6-9 parts of modified glass fiber, 10-15 parts of nano silicon carbide and 2-4 parts of composite lubricant into a mixer, mixing uniformly, and drying in an oven at 150 ℃ and 130 ℃ for 2-3 hours to obtain the mixture.
10. The preparation method of the high-temperature-resistant and wear-resistant PEEK matrix composite material as claimed in claim 8, wherein the step (2) of adding the mixed material into a twin-screw pelletizer for extrusion and pelletization to obtain the high-temperature-resistant and wear-resistant PEEK matrix composite material; and the granulation temperature of the double-screw granulator is as follows: the temperature of the first area of the double-screw granulator is 280-300 ℃, the temperature of the second area is 360-380 ℃, the temperature of the third area is 360-380 ℃, the temperature of the fourth area is 350-380 ℃, and the temperature of the die orifice is 340-350 ℃; the granules obtained by granulation are cylindrical granules with the diameter of 1-2 mm and the length of 4-5 mm.
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| CN113583382A (en) * | 2021-09-15 | 2021-11-02 | 南京首塑特种工程塑料制品有限公司 | High-temperature-resistant and wear-resistant PEEK profile composite material and preparation method thereof |
| CN113908633A (en) * | 2021-10-25 | 2022-01-11 | 安徽欣创节能环保科技股份有限公司 | Low-resistance high-efficiency bag type dust collector based on high-strength filter bag |
| CN114133697A (en) * | 2021-11-30 | 2022-03-04 | 江苏亨博复合材料有限公司 | PEEK material with high wear resistance and preparation method thereof |
| CN114181493A (en) * | 2021-12-16 | 2022-03-15 | 江苏君华特种工程塑料制品有限公司 | PEEK-based composite material with low abrasion and high comprehensive performance and preparation method thereof |
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| CN114181493A (en) * | 2021-12-16 | 2022-03-15 | 江苏君华特种工程塑料制品有限公司 | PEEK-based composite material with low abrasion and high comprehensive performance and preparation method thereof |
| CN114181493B (en) * | 2021-12-16 | 2024-04-19 | 江苏君华特种高分子材料股份有限公司 | PEEK-based composite material with low abrasion and high comprehensive performance and preparation method thereof |
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