CN113981672A - Rare earth oxide modified fiber fabric and preparation method and application thereof - Google Patents
Rare earth oxide modified fiber fabric and preparation method and application thereof Download PDFInfo
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- CN113981672A CN113981672A CN202111332855.0A CN202111332855A CN113981672A CN 113981672 A CN113981672 A CN 113981672A CN 202111332855 A CN202111332855 A CN 202111332855A CN 113981672 A CN113981672 A CN 113981672A
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- 239000000835 fiber Substances 0.000 title claims abstract description 146
- 239000004744 fabric Substances 0.000 title claims abstract description 139
- 229910001404 rare earth metal oxide Inorganic materials 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 73
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 73
- 229910001954 samarium oxide Inorganic materials 0.000 claims abstract description 33
- 229940075630 samarium oxide Drugs 0.000 claims abstract description 33
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910003451 terbium oxide Inorganic materials 0.000 claims abstract description 32
- SCRZPWWVSXWCMC-UHFFFAOYSA-N terbium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Tb+3].[Tb+3] SCRZPWWVSXWCMC-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910003440 dysprosium oxide Inorganic materials 0.000 claims abstract description 31
- NLQFUUYNQFMIJW-UHFFFAOYSA-N dysprosium(iii) oxide Chemical compound O=[Dy]O[Dy]=O NLQFUUYNQFMIJW-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims description 43
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 30
- 239000004697 Polyetherimide Substances 0.000 claims description 30
- 229920001601 polyetherimide Polymers 0.000 claims description 30
- 238000002791 soaking Methods 0.000 claims description 30
- 238000005470 impregnation Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 24
- 230000007547 defect Effects 0.000 abstract description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 26
- 239000011259 mixed solution Substances 0.000 description 25
- 239000000243 solution Substances 0.000 description 22
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 20
- 238000012360 testing method Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 14
- 239000003208 petroleum Substances 0.000 description 13
- 238000003756 stirring Methods 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 10
- 239000004696 Poly ether ether ketone Substances 0.000 description 8
- 229920002530 polyetherether ketone Polymers 0.000 description 8
- 238000004506 ultrasonic cleaning Methods 0.000 description 8
- 238000005406 washing Methods 0.000 description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 5
- 239000005011 phenolic resin Substances 0.000 description 5
- 229920001568 phenolic resin Polymers 0.000 description 5
- XTLNYNMNUCLWEZ-UHFFFAOYSA-N ethanol;propan-2-one Chemical compound CCO.CC(C)=O XTLNYNMNUCLWEZ-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- -1 Polytetrafluoroethylene Polymers 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 239000002070 nanowire Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 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
- 238000007598 dipping method Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000005737 synergistic response Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/45—Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic Table; Aluminates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/22—Polymers or copolymers of halogenated mono-olefins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/35—Abrasion, pilling or fibrillation resistance
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Woven Fabrics (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention provides a rare earth oxide modified fiber fabric and a preparation method and application thereof, and relates to the technical field of composite materials. The rare earth oxide modified fiber fabric provided by the invention comprises a polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric and rare earth oxide dispersed on the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric; the rare earth oxide is one or more of dysprosium oxide, samarium oxide and terbium oxide. The invention introduces the rare earth oxide into the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric, can improve the wear resistance of the fiber fabric, ensures that the fiber fabric still has lower friction coefficient and wear rate under the working conditions of low temperature and heavy load and high speed and high temperature, overcomes the defects of the existing fiber fabric composite material, and widens the application prospect.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a rare earth oxide modified fiber fabric and a preparation method and application thereof.
Background
The normal operation of the mechanical kinematic pair in a low-temperature environment puts very strict requirements on the lubricant, the lubricating task can not be almost completed only by the traditional lubricating grease, and the solid self-lubricating material breaks through the effective use limit of the traditional grease lubrication and has excellent performances of strong bearing capacity, excellent friction performance, high wear resistance, good timeliness and the like.
The fiber fabric composite material has unique self-lubricating property, so that the fiber fabric composite material is widely applied to friction parts such as aerospace, automobiles, sports equipment, bearings, sealing rings and the like. However, the wear resistance of the existing fiber fabric composite material under the conditions of low temperature or high speed and high temperature is reduced sharply, and the increasingly complicated and causticized working conditions are difficult to meet.
Disclosure of Invention
The invention aims to provide a rare earth oxide modified fiber fabric and a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a rare earth oxide modified fiber fabric, which comprises a polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric and rare earth oxides dispersed on the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric; the rare earth oxide is one or more of dysprosium oxide, samarium oxide and terbium oxide.
Preferably, the rare earth oxide is bonded to the polyetheretherketone-polytetrafluoroethylene blend fabric by polyetherimide.
Preferably, the diameter of the dysprosium oxide is 5-15 μm, and the specific surface area is 10-25 m2/g。
Preferably, the rare earth oxide is samarium oxide and terbium oxide.
Preferably, the average particle size of the samarium oxide is 20-40 nm, and the specific surface area is 30-50 m2(ii)/g; the terbium oxide has an average particle size of 70-90 nm and a specific surface area of 1-5 m2/g。
Preferably, the mass of the rare earth oxide is 0.5-2.5% of the total mass of the rare earth oxide modified fiber fabric.
Preferably, the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric is woven in a plain weave structure, and the areal density is 400-440 g/cm2。
The invention provides a preparation method of the rare earth oxide modified fiber fabric, which comprises the following steps:
mixing polyetherimide, N-dimethylformamide and rare earth oxide to obtain impregnation liquid;
and (3) soaking the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric in the soaking solution, and drying to obtain the rare earth oxide modified fiber fabric.
Preferably, the mass ratio of the polyetherimide to the N, N-dimethylformamide to the rare earth oxide is (10-30): 70-80): 0.2-0.8.
The invention provides the application of the rare earth oxide modified fiber fabric or the rare earth oxide modified fiber fabric prepared by the preparation method in the technical scheme in a self-lubricating material.
The invention provides a rare earth oxide modified fiber fabric, which comprises a polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric and rare earth oxides dispersed on the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric; the rare earth oxide is one or more of dysprosium oxide, samarium oxide and terbium oxide. The invention introduces the rare earth oxide into the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric, can improve the wear resistance of the fiber fabric, ensures that the fiber fabric still has lower friction coefficient and wear rate under the working conditions of low temperature and heavy load and high speed and high temperature, overcomes the defects of the existing fiber fabric composite material, and widens the application prospect.
Drawings
FIG. 1 is a surface topography of dysprosium oxide;
FIG. 2 is a surface topography of samarium oxide;
FIG. 3 is a surface topography of terbium oxide.
Detailed Description
The invention provides a rare earth oxide modified fiber fabric, which comprises a polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric and rare earth oxides dispersed on the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric; the rare earth oxide is one or more of dysprosium oxide, samarium oxide and terbium oxide.
The rare earth oxide modified fiber fabric provided by the invention comprises a polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric (PEEK-PTFE blended fiber fabric). In the invention, the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric is preferably woven by PTFE fibers and polyether-ether-ketone fibers in a plain weave structure; the mass ratio of the PTFE fiber to the polyether-ether-ketone fiber is preferably (5-7): (3-5), and more preferably 3: 2. In the invention, the diameter of the polyether-ether-ketone fiber is preferably 50-55 μm; the diameter of the PTFE fiber is preferably 20-25 μm.
In the invention, the preferred areal density of the PEEK-PTFE blended fiber fabric is 400-440 g/cm2More preferably 420g/cm2。
In the invention, the polyether-ether-ketone (PEEK) is a special engineering plastic with ultrahigh performance, has good fracture toughness and thermal stability, excellent wear resistance, chemical corrosion resistance, flame retardant property and the like, can be used for a long time at the temperature of 250 ℃, is prepared from the polyether-ether-ketone resin through high-temperature melt spinning, has the advantages of the PEEK resin and also has higher tensile strength and modulus. The molecular chains of Polytetrafluoroethylene (PTFE) are easy to slip, so that the Polytetrafluoroethylene (PTFE) has the characteristics of low friction and excellent self-lubricating property. The PEEK-PTFE blended fiber fabric has good self-lubricating property and wear resistance.
The rare earth oxide modified fiber fabric provided by the invention comprises rare earth oxide dispersed on the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric. In the invention, the rare earth oxide is one or more of dysprosium oxide, samarium oxide and terbium oxide, and is more preferably dysprosium oxide or a mixture of samarium oxide and terbium oxide. In the invention, dysprosium oxide has unique porous shape, and the dysprosium oxide is introduced into the PEEK-PTFE blended fiber fabric, so that the dysprosium oxide still has excellent friction performance and wear resistance under the working condition of low temperature and heavy load.
According to the invention, the friction and wear properties of the fiber fabric are modified by the cooperation of the samarium oxide and the terbium oxide, the samarium oxide and the terbium oxide can generate an effect of 1+1>2 when being used at the same time, and the problem of poor wear resistance of the fiber fabric composite material at high speed and high temperature is solved by the cooperation of the samarium oxide and the terbium oxide, so that the fiber fabric composite material is suitable for working conditions of high speed and high temperature.
In the invention, the particle diameter of the dysprosium oxide is preferably 5-15 μm, and the specific surface area is preferably 10-25 m2G, more preferably 20m2(ii) in terms of/g. In the present invention, the dysprosium oxide is porous.
In the invention, the average particle size of the samarium oxide is preferably 20-40 nm, and the specific surface area is preferably 30-50 m2(ii)/g; the average particle size of the terbium oxide is preferably 70-90 nm.
In the invention, the mass of the rare earth oxide is preferably 0.5-2.5% of the total mass of the rare earth oxide modified fiber fabric, and more preferably 0.5-1.5%. In the invention, when the rare earth oxide is dysprosium oxide, the mass of the dysprosium oxide is preferably 0.5-2% of the total mass of the rare earth oxide modified fiber fabric, and more preferably 0.5-1%. In the invention, when the rare earth oxide is samarium oxide and terbium oxide, the mass of the samarium oxide is preferably 0.5-2.5% of the total mass of the rare earth oxide modified fiber fabric, and more preferably 0.5-1.5%; the mass of the terbium oxide is preferably 0.5-2.5% of the total mass of the rare earth oxide modified fiber fabric, and more preferably 0.5-1.5%.
In the present invention, the rare earth oxide is preferably bonded to the polyetheretherketone-polytetrafluoroethylene blended fiber fabric by polyetherimide. In the invention, the mass of the polyetherimide is preferably 5-40% of the total mass of the blended fiber fabric composite material, and more preferably 20-40%. The invention also provides a preparation method of the rare earth oxide modified fiber fabric, which comprises the following steps:
mixing polyetherimide, N-dimethylformamide and rare earth oxide to obtain impregnation liquid;
and (3) soaking the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric in the soaking solution, and drying to obtain the rare earth oxide modified fiber fabric.
The method comprises the step of mixing Polyetherimide (PEI), N-Dimethylformamide (DMF) and rare earth oxide to obtain impregnation liquid. In the invention, the mass ratio of the PEI, the DMF and the rare earth oxide is preferably (10-30): (70-80): 0.2-0.8). In the invention, when the rare earth oxide is dysprosium oxide, the mass ratio of PEI, DMF and dysprosium oxide is preferably (10-30): 75-80): 0.2-0.4, more preferably (20-30): 78-80): 0.2-0.4. Dysprosium oxide used in the invention is porous and can be fully contacted with Polyetherimide (PEI) impregnation liquid, so that the interface bonding strength is improved; the good interface bonding strength can better transfer stress, improve the bearing capacity of the fiber fabric, improve the wear resistance and prolong the service life.
In the invention, when the rare earth oxide is samarium oxide and terbium oxide, the mass ratio of the PEI, the DMF, the samarium oxide and the terbium oxide is preferably (10-30): 70-80): 0.2-0.4, more preferably (20-30): 75-80): 0.3-0.4.
In the invention, the mixing is preferably carried out under the condition of stirring, and the stirring speed is preferably 1000-1500 rpm, more preferably 1200-1400 rpm; the stirring time is preferably 2-3 h, and more preferably 2.5 h.
After the impregnation liquid is obtained, the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric is placed in the impregnation liquid for impregnation, and the rare earth oxide modified fiber fabric is obtained after drying. In the present invention, the temperature of the impregnation is preferably room temperature. In the present invention, the time for each impregnation is preferably 15 min. In the invention, the drying temperature is preferably 90-110 ℃, and more preferably 100 ℃; the time is preferably 2 h. In the present invention, the drying is preferably performed in a vacuum oven. In the invention, the impregnation and drying processes are preferably repeated on the dried fabric to obtain the rare earth oxide modified fiber fabric. In the invention, the repeated times of the dipping and drying processes are preferably 2-5 times.
In the invention, the mass of the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric is preferably 60-90% of the total mass of the rare earth oxide modified fiber fabric, and more preferably 70-80%.
In the invention, the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric preferably further comprises pretreatment before impregnation. In the present invention, the method of pretreatment preferably comprises: sequentially washing the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric with petroleum ether, washing with acetone-ethanol and drying. In the present invention, the petroleum ether washing is preferably performed under ultrasonic conditions; the time for washing with petroleum ether is preferably 25-35 min, and more preferably 30 min. In the invention, the petroleum ether is preferably washed, dried and then washed by acetone-ethanol. In the invention, the cleaning solution used for acetone-ethanol washing is a mixed solution of acetone and ethanol; the volume ratio of acetone to ethanol in the cleaning solution is preferably (1-3): (1-2); the time for washing with acetone-ethanol is preferably 25-35 min, and more preferably 30 min. In the invention, the drying temperature is preferably 50-80 ℃, and more preferably 60-75 ℃; the drying time is preferably 1-3 hours, and more preferably 1.5-2 hours. The invention can remove the sizing material and the oiling agent which are stuck on the fiber in the spinning process of the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric through pretreatment.
The invention also provides the application of the rare earth oxide modified fiber fabric or the rare earth oxide modified fiber fabric prepared by the preparation method in the technical scheme in a self-lubricating material. In the invention, the rare earth oxide modified fiber fabric is preferably applied to a self-lubricating material as a self-lubricating coating, and is more preferably used as a bearing self-lubricating bushing. In a specific embodiment of the invention, the titanium oxide nanowire and molybdenum oxide nanowire synergistic modified fiber fabric composite material is adhered to the surface of a bearing through phenolic resin and is used as a self-lubricating bushing of the bearing. In the invention, the thickness of the titanium oxide nanowire and molybdenum oxide nanowire synergistic modified fiber fabric composite material is preferably 0.4-0.7 mm, and more preferably 0.6 mm.
In the invention, when the modified material of the rare earth oxide modified fiber fabric is dysprosium oxide, a self-lubricating material suitable for a low-temperature heavy-load working condition is preferably selected; the temperature of the low-temperature heavy-load working condition is preferably-150 ℃; the load is preferably 32 MPa. In the invention, when the modified material of the rare earth oxide modified fiber fabric is samarium oxide and terbium oxide, a self-lubricating material suitable for high-speed and high-temperature working conditions is preferably selected; the speed of the high-speed high-temperature working condition is preferably 5 m/s; the temperature is preferably 150 ℃.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
The following examples and comparative examples employ the starting materials:
PEEK-PTFE blend fiber fabric: provided by the research institute of textile science in Shaanxi province; the surface density is 420g/cm2；
PTFE fiber: changzhou Wancapacity New Material science and technology, Inc.;
PEEK fiber: changzhou creative new materials science and technology Limited;
polyetherimide (PEI): the institute of synthetic resin of Shanghai city;
dysprosium oxide: beijing Deke island gold Tech Co., Ltd., as shown in FIG. 1, the average particle diameter was 10 μm and the specific surface area was 20m2/g；
N, N-Dimethylformamide (DMF): rianlong Bohua (Tianjin) pharmaceutical chemistry, Inc.;
petroleum ether: rianlong Bohua (Tianjin) pharmaceutical chemistry, Inc.;
phenolic resin: the phenolic resin adhesive of the iron anchor plate 204 produced by Shanghai New photo-chemical company Limited is adopted.
Samarium oxide: as shown in FIG. 2, samarium oxide having an average particle diameter of 30nm and a specific surface area of 45m was prepared by Beijing Deke island gold Tech Co., Ltd2/g；
Terbium oxide: as shown in FIG. 3, the average particle diameter of the particles is 70 to 90 nm.
Example 1
And (3) putting the PEEK-PTFE blended fiber fabric into petroleum ether for ultrasonic cleaning for 30min, and after drying, putting acetone: ultrasonically cleaning the mixed solution with the volume ratio of ethanol being 1:1 for 30min, taking out the mixed solution, and drying the mixed solution at 50 ℃ for 1h to obtain the pretreated PEEK-PTFE blended fiber fabric;
mixing PEI, DMF and dysprosium oxide according to a mass ratio of 10:75:0.2, and magnetically stirring at a speed of 1000rpm for 2 hours to obtain an impregnation solution;
and (3) soaking the pretreated PEEK-PTFE blended fiber fabric in the soaking solution, drying in a vacuum oven at 90 ℃, and repeating the operations of soaking and drying until the mass of the PEEK-PTFE blended fiber fabric accounts for 90% of the total mass of the composite material to obtain the rare earth oxide modified fiber fabric.
Example 2
And (3) putting the PEEK-PTFE blended fiber fabric into petroleum ether for ultrasonic cleaning for 35min, and after drying, putting acetone: ultrasonically cleaning the mixed solution with the volume ratio of ethanol being 3:2 for 35min, taking out the mixed solution, and drying the mixed solution at 80 ℃ for 2h to obtain the pretreated PEEK-PTFE blended fiber fabric;
mixing PEI, DMF and dysprosium oxide according to a mass ratio of 30:80:0.4, and magnetically stirring at a speed of 1500rpm for 3 hours to obtain an impregnation solution;
and (3) soaking the pretreated PEEK-PTFE blended fiber fabric in the soaking solution, drying in a vacuum oven at 110 ℃, and repeating the operations of soaking and drying until the mass of the PEEK-PTFE blended fiber fabric accounts for 60% of the total mass of the composite material to obtain the rare earth oxide modified fiber fabric.
Example 3
And (3) putting the PEEK-PTFE blended fiber fabric into petroleum ether for ultrasonic cleaning for 25min, and after drying, putting acetone: ultrasonically cleaning the mixed solution with the volume ratio of 2:1 of ethanol for 35min, taking out the mixed solution, and drying the mixed solution at 70 ℃ for 1.5h to obtain the pretreated PEEK-PTFE blended fiber fabric;
mixing PEI, DMF and dysprosium oxide according to the mass ratio of 20:78:0.3, and magnetically stirring at the speed of 1200rpm for 2.5h to obtain an impregnation solution;
and (3) soaking the pretreated PEEK-PTFE blended fiber fabric in the soaking solution, drying in a vacuum oven at 100 ℃, and repeating the operations of soaking and drying until the mass of the PEEK-PTFE blended fiber fabric accounts for 70% of the total mass of the composite material to obtain the rare earth oxide modified fiber fabric.
Example 4
And (3) putting the PEEK-PTFE blended fiber fabric into petroleum ether for ultrasonic cleaning for 25min, and after drying, putting acetone: ultrasonically cleaning the mixed solution with the volume ratio of ethanol being 3:2 for 35min, taking out the mixed solution, and drying the mixed solution at the temperature of 60 ℃ for 2h to obtain the pretreated PEEK-PTFE blended fiber fabric;
mixing PEI, DMF and dysprosium oxide according to a mass ratio of 30:80:0.2, and magnetically stirring at 1300rpm for 2h to obtain an impregnation solution;
and (3) soaking the pretreated PEEK-PTFE blended fiber fabric in the soaking solution, drying in a vacuum oven at 90 ℃, and repeating the operations of soaking and drying until the mass of the PEEK-PTFE blended fiber fabric accounts for 80% of the total mass of the composite material to obtain the rare earth oxide modified fiber fabric.
Comparative example 1
Substantially the same as in example 2, except that the mass ratio of PEI, DMF and dysprosium oxide was adjusted from "30: 80: 0.4" to "30.4: 80: 0", that is, dysprosium oxide was not added.
Test example 1
Bonding the rare earth oxide modified fiber fabrics of examples 1-4 and comparative example 1 to GCr15 stainless steel for friction test by using phenolic resin, and curing to obtain a friction block for test; the curing procedure was: 0.1MPa, raising the temperature to 160 ℃ by a program of 5 ℃/min and then preserving the temperature for 2 h. Frictional wear test conditions: the friction and wear test adopts a high-vacuum low-temperature friction and wear testing machine, the friction block for test and the GCr15 steel ring are oppositely ground, the test load is 32MPa (1200N), the rotating speed is 2cm/s, the running time is 2h, the friction coefficient and the wear rate are average values of 3-5 tests, and the test temperature is-150 ℃. The results are shown in Table 1.
TABLE 1 Friction and abrasion Properties of rare earth oxide modified fiber fabrics of examples 1 to 4 and comparative example 1
| Item | Coefficient of friction | Wear rate/10-14m3·N-1·m-1 |
| Example 1 | 0.148 | 5.1 |
| Example 2 | 0.133 | 2.8 |
| Example 3 | 0.159 | 7.2 |
| Example 4 | 0.143 | 4.3 |
| Comparative example 1 | 0.192 | 18.3 |
As can be seen from Table 1, the coefficient of friction and the wear rate of the fiber fabric composite began to decrease after the addition of dysprosium oxide. However, different amounts of dysprosium oxide improve tribological properties to varying degrees. In addition, it is clear from example 2 and comparative example 1 that dysprosium oxide can greatly improve the tribological properties of the fiber fabric composite.
Example 5
And (3) putting the PEEK-PTFE blended fiber fabric into petroleum ether for ultrasonic cleaning for 30min, and after drying, putting acetone: ultrasonically cleaning the mixed solution with the volume ratio of ethanol being 1:1 for 30min, taking out the mixed solution, and drying the mixed solution at 70 ℃ for 1.5h to obtain the pretreated PEEK-PTFE blended fiber fabric;
mixing PEI, DMF, samarium oxide and terbium oxide according to the mass ratio of 20:75:0.3:0.3, and magnetically stirring at the speed of 1200rpm for 2.5 hours to obtain an impregnation solution;
and (3) soaking the pretreated PEEK-PTFE blended fiber fabric in the soaking solution, drying in a vacuum oven at 100 ℃, and repeating the operations of soaking and drying until the mass of the PEEK-PTFE blended fiber fabric accounts for 70% of the total mass of the composite material to obtain the rare earth oxide modified fiber fabric.
Example 6
And (3) putting the PEEK-PTFE blended fiber fabric into petroleum ether for ultrasonic cleaning for 35min, and after drying, putting acetone: ultrasonically cleaning the mixed solution with the volume ratio of ethanol being 3:2 for 35min, taking out the mixed solution, and drying the mixed solution at 80 ℃ for 2h to obtain the pretreated PEEK-PTFE blended fiber fabric;
mixing PEI, DMF, samarium oxide and terbium oxide according to a mass ratio of 30:80:0.4:0.4, and magnetically stirring at a speed of 1500rpm for 3 hours to obtain an impregnation solution;
and (3) soaking the pretreated PEEK-PTFE blended fiber fabric in the soaking solution, drying in a vacuum oven at 110 ℃, and repeating the operations of soaking and drying until the mass of the PEEK-PTFE blended fiber fabric accounts for 60% of the total mass of the composite material to obtain the rare earth oxide modified fiber fabric.
Example 7
And (3) putting the PEEK-PTFE blended fiber fabric into petroleum ether for ultrasonic cleaning for 25min, and after drying, putting acetone: ultrasonically cleaning the mixed solution with the volume ratio of ethanol being 1:1 for 25min, taking out the mixed solution, and drying the mixed solution at 50 ℃ for 1h to obtain the pretreated PEEK-PTFE blended fiber fabric;
mixing PEI, DMF, samarium oxide and terbium oxide according to the mass ratio of 10:70:0.2:0.2, and magnetically stirring for 2 hours at the speed of 1000rpm to obtain an impregnation solution;
and (3) soaking the pretreated PEEK-PTFE blended fiber fabric in the soaking solution, drying in a vacuum oven at 90 ℃, and repeating the operations of soaking and drying until the mass of the PEEK-PTFE blended fiber fabric accounts for 90% of the total mass of the composite material to obtain the rare earth oxide modified fiber fabric.
Example 8
And (3) putting the PEEK-PTFE blended fiber fabric into petroleum ether for ultrasonic cleaning for 25min, and after drying, putting acetone: ultrasonically cleaning the mixed solution with the volume ratio of ethanol being 3:1 for 35min, taking out the mixed solution, and drying the mixed solution at the temperature of 70 ℃ for 2h to obtain the pretreated PEEK-PTFE blended fiber fabric;
mixing PEI, DMF, samarium oxide and terbium oxide according to the mass ratio of 10:80:0.3:0.2, and magnetically stirring at the speed of 1300rpm for 3 hours to obtain an impregnation solution;
and (3) soaking the pretreated PEEK-PTFE blended fiber fabric in the soaking solution, drying in a vacuum oven at 95 ℃, and repeating the operations of soaking and drying until the mass of the PEEK-PTFE blended fiber fabric accounts for 80% of the total mass of the composite material to obtain the rare earth oxide modified fiber fabric.
Comparative example 2
The procedure was conducted in substantially the same manner as in example 6 except that the mass ratio of PEI, DMF, samarium oxide and terbium oxide was adjusted from "30: 80:0.4: 0.4" to "30: 80:0.8: 0", and terbium oxide was not added.
Comparative example 3
The same as example 6 except that the mass ratio of PEI, DMF, samarium oxide and terbium oxide was adjusted from "30: 80:0.4: 0.4" to "30: 80:0: 0.8", and samarium oxide was not added.
Comparative example 4
The same as example 6 except that the mass ratio of PEI, DMF, samarium oxide and terbium oxide was adjusted from "30: 80:0.4: 0.4" to "30.8: 80:0: 0", and samarium oxide and terbium oxide were not added.
Test example 2
Bonding the rare earth oxide modified fiber fabrics prepared in the examples 5-8 and the comparative examples 2-4 to GCr15 bearing steel for friction tests by using phenolic resin, and curing to obtain a friction block for testing; the curing procedure was: raising the temperature to 170 ℃ under the program of 8 ℃/min under the pressure of 0.2MPa, and then preserving the temperature for 2 h. Frictional wear test conditions: a high-speed ring block friction and wear testing machine is adopted, the friction block for testing and the GCr15 steel ring are oppositely ground, the test load is 0.5MPa (50N), the rotating speed is 5m/s, the running time is 2h, the friction coefficient and the wear rate are average values of 3-5 tests, and the test temperature is 150 ℃. The results are shown in Table 2.
TABLE 2 Friction and wear Properties of rare earth oxide-modified fiber fabrics of examples 5 to 8 and comparative examples 2 to 4
| Item | Coefficient of friction | Wear rate/10-14m3·N-1·m-1 |
| Example 5 | 0.187 | 9.7 |
| Example 6 | 0.182 | 4.6 |
| Example 7 | 0.192 | 13.7 |
| Example 8 | 0.190 | 11.5 |
| Comparative example 2 | 0.215 | 17.2 |
| Comparative example 3 | 0.209 | 15.9 |
| Comparative example 4 | 0.227 | 20.4 |
As can be seen from table 2, samarium oxide and terbium oxide, used either alone or together, can improve the tribological properties of the fiber fabric composite, but the use of both materials together produces a synergistic response, resulting in 1+1>2 effects. The two rare earth oxides mainly have the function of improving the wear resistance of the fiber plant composite material under the heavy-load low-temperature working condition.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The rare earth oxide modified fiber fabric is characterized by comprising a polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric and rare earth oxide dispersed on the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric; the rare earth oxide is one or more of dysprosium oxide, samarium oxide and terbium oxide.
2. The rare earth oxide-modified fiber fabric according to claim 1, wherein the rare earth oxide is bonded to the polyetheretherketone-polytetrafluoroethylene blended fiber fabric by polyetherimide.
3. The rare earth oxide modified fiber fabric of claim 1, wherein the dysprosium oxide has a particle size of 5-15 μm and a specific surface area of 10-25 m2/g。
4. The rare earth oxide-modified fibrous fabric of claim 1, wherein the rare earth oxide is samarium oxide and terbium oxide.
5. The rare earth oxide modified fiber fabric according to claim 1 or 4, wherein the samarium oxide has an average particle size of 20 to 40nm and a specific surface area of 30 to 50m2(ii)/g; the terbium oxide has an average particle size of 70-90 nm and a specific surface area of 1-5 m2/g。
6. The rare earth oxide modified fiber fabric of claim 1, wherein the mass of the rare earth oxide is 0.5-2.5% of the total mass of the rare earth oxide modified fiber fabric.
7. The rare earth oxide modified fiber fabric of claim 1, wherein the polyetheretherketone-polytetrafluoroethylene blended fiber fabric is woven in a plain weave structure, and the areal density is 400-440 g/cm2。
8. The method for preparing the rare earth oxide modified fiber fabric as claimed in any one of claims 1 to 7, comprising the steps of:
mixing polyetherimide, N-dimethylformamide and rare earth oxide to obtain impregnation liquid;
and (3) soaking the polyether-ether-ketone-polytetrafluoroethylene blended fiber fabric in the soaking solution, and drying to obtain the rare earth oxide modified fiber fabric.
9. The method according to claim 8, wherein the mass ratio of the polyetherimide to the N, N-dimethylformamide to the rare earth oxide is (10-30): (70-80): (0.2-0.8).
10. Use of the rare earth oxide modified fiber fabric according to any one of claims 1 to 7 or the rare earth oxide modified fiber fabric prepared by the preparation method according to any one of claims 8 to 9 in a self-lubricating material.
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