CN115198532A - Solid-liquid composite lubricating blended fiber fabric and preparation method and application thereof - Google Patents

Solid-liquid composite lubricating blended fiber fabric and preparation method and application thereof Download PDF

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CN115198532A
CN115198532A CN202210983888.XA CN202210983888A CN115198532A CN 115198532 A CN115198532 A CN 115198532A CN 202210983888 A CN202210983888 A CN 202210983888A CN 115198532 A CN115198532 A CN 115198532A
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fiber fabric
cubtc
blended fiber
solid
porous metal
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CN115198532B (en
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陶立明
徐明坤
李宋
李彦辉
王齐华
王廷梅
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Lanzhou Institute of Chemical Physics LICP of CAS
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    • D—TEXTILES; PAPER
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    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
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    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
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    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/325—Amines
    • D06M13/328—Amines the amino group being bound to an acyclic or cycloaliphatic carbon atom
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    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/61—Polyamines polyimines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
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    • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
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    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
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Abstract

The invention provides a solid-liquid composite lubricating blended fiber fabric and a preparation method and application thereof, and relates to the technical field of lubricating materials. According to the invention, 3, 4-dihydroxyphenylethylamine and polyethyleneimine are coprecipitated on the surface of PEEK/PTFE blended fiber fabric to increase the surface roughness and surface active functional groups of the fiber, and after an impregnation liquid prepared from an oil-containing CuBTC porous metal organic framework material, an adhesive and a solvent is coated on the surface of the fiber, the higher surface roughness of the fiber can form mechanical interlocking with the adhesive, so that the bonding force between the adhesive and the fiber is increased to reduce abrasion; and more active functional groups on the fiber surface can form hydrogen bonds with carboxyl of oleic acid molecules to ensure that the oleic acid molecules are retained on the fiber surface to form a lubricating oil film, so that direct contact between friction pairs is avoided. The solid-liquid composite lubricating blended fiber fabric prepared by the invention shows excellent tribological performance under the working condition of heavy load and low speed, and has stable and ultralow friction coefficient.

Description

Solid-liquid composite lubricating blended fiber fabric and preparation method and application thereof
Technical Field
The invention relates to the technical field of lubricating materials, in particular to a solid-liquid composite lubricating blended fiber fabric and a preparation method and application thereof.
Background
The PEEK fiber is a high-performance special wholly aromatic fiber prepared by high-temperature melt spinning of polyether-ether-ketone engineering plastics, and ether bonds and ketone bonds exist in a macromolecular main chain of the PEEK fiber, so that the PEEK fiber has excellent characteristics of high temperature resistance, friction resistance, corrosion resistance and the like, and is widely applied to the fields of aerospace, electronic information, petrochemical industry, automobile manufacturing and the like. Polytetrafluoroethylene (PTFE) fiber is a synthetic fiber made from PTFE resin as a raw material by spinning or fibrillation. The PTFE fiber has excellent lubricating property and extremely stable physical and chemical properties, and is widely applied to the preparation of low-friction materials. The PEEK/PTFE fiber fabric composite material formed by blending and weaving PEEK fibers and PTFE fibers has the high bearing and wear-resisting properties of the PEEK fibers and the low friction property of the PTFE fibers, and is widely applied to joint bearing lining materials. However, the fiber fabric pad material in the current market is generally compounded by blending fabric and resin-filled solid lubricant (such as graphene, molybdenum disulfide, carbon nitride and the like) to realize the function of wear reduction and resistance, but the friction form of the fiber fabric pad material still belongs to solid lubrication, and the friction coefficient of the fiber fabric pad material is relatively high. With the rapid development of the field of mechanical engineering equipment in recent years, higher requirements are put forward on the performance of bearing liner materials, and the liner materials are required to keep an ultralow friction coefficient which is stable for a long time under the working conditions of high load and low speed. However, the fiber fabric lining material of the traditional solid lubricating system cannot meet the lubricating requirement of ultralow friction coefficient, so that the development of the fabric lining material with ultralow friction coefficient has very important significance.
Disclosure of Invention
In view of the above, the present invention aims to provide a solid-liquid composite lubricating blended fiber fabric, a preparation method and applications thereof. The solid-liquid composite lubricating blended fiber fabric prepared by the invention shows excellent tribological performance under the working conditions of high load and low speed, has stable and ultralow friction coefficient, and greatly expands the application range of the fiber fabric self-lubricating liner material.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of a solid-liquid composite lubricating blended fiber fabric, which comprises the following steps:
dipping the CuBTC porous metal organic framework material into oleic acid to obtain an oil-containing CuBTC porous metal organic framework material; mixing the oil-containing CuBTC porous metal organic framework material, an adhesive and an organic solvent to obtain an impregnation solution;
mixing 3, 4-dihydroxyphenylethylamine, tris (hydroxymethyl) aminomethane, polyethyleneimine and water to obtain a codeposition solution; dipping the PEEK/PTFE blend fiber fabric into the co-deposition solution to obtain a surface modified PEEK/PTFE blend fiber fabric;
and coating the impregnation liquid on one side surface of the PEEK/PTFE blended fiber fabric with the modified surface, and drying to obtain the solid-liquid composite lubricating blended fiber fabric.
Preferably, the pore diameter of the CuBTC porous metal organic framework material is 30-90 nm.
Preferably, the preparation method of the CuBTC porous metal organic framework material comprises the following steps:
mixing copper nitrate, a solvent, acetic acid, triethylamine and trimesic acid to carry out solvothermal reaction to obtain a CuBTC porous metal organic framework material;
the dosage ratio of the copper nitrate, the acetic acid and the triethylamine is (0.8-1.6) g, (1.2-2.8) mL, (1.0-2.0) mL; the mass ratio of the copper nitrate to the trimesic acid is (0.8-1.6) to (0.5-1.0); the temperature of the solvothermal reaction is 80-125 ℃, and the heat preservation time is 16-24 h.
Preferably, the time for soaking the oleic acid is 12-24 hours; the oil content of the oil-containing CuBTC porous metal organic framework material is 20-60 wt%.
Preferably, the adhesive comprises a polyetherimide resin adhesive, a phenolic resin adhesive or an epoxy resin adhesive; the organic solvent comprises one or more of N, N-dimethylformamide, N-dimethylacetamide and dichloromethane; the mass ratio of the oil-containing CuBTC porous metal organic framework material to the adhesive to the organic solvent is (0.5-2.5) to (10-20) to (60-90).
Preferably, the diameter of the PEEK fiber in the PEEK/PTFE blended fiber fabric is 50-55 μm, and the diameter of the PTFE fiber is 20-30 μm; the surface density of the PEEK/PTFE blended fiber fabric is 400-430 g/m 2 。
Preferably, the concentrations of 3, 4-dihydroxyphenylethylamine, tris (hydroxymethyl) aminomethane and polyethyleneimine in the codeposition solution are (2.0-3.0) g/L, (1.0-2.0) g/L and (0.5-2.0) g/L respectively; the time for dipping the codeposition solution is 12-18 h.
Preferably, the mass content of the blended fiber fabric in the solid-liquid composite lubricating blended fiber fabric is 70-90%.
The invention provides the solid-liquid composite lubricating blended fiber fabric prepared by the preparation method in the technical scheme.
The invention also provides the application of the solid-liquid composite lubricating blended fiber fabric as a self-lubricating liner material.
The invention provides a preparation method of a solid-liquid composite lubricating blended fiber fabric, which comprises the following steps: according to the invention, the unique pore structure of the CuBTC porous metal organic framework material is utilized as an oil storage material, and the oil-containing CuBTC porous metal organic framework material is formed by dipping oleic acid; according to the invention, 3, 4-dihydroxyphenylethylamine and polyethyleneimine are coprecipitated on the surface of PEEK/PTFE blended fiber fabric to increase the roughness and surface active functional groups (hydroxyl and amino) of the fiber surface, and after an impregnation solution prepared from an oil-containing CuBTC porous metal organic framework material, an adhesive and an organic solvent is coated on the surface of the blended fiber, a mechanical interlocking structure can be formed between the higher fiber surface roughness and the adhesive, so that the binding force between the adhesive and the fiber is increased to reduce abrasion; and more active functional groups on the fiber surface can form hydrogen bonds with carboxyl of the oleic acid molecules to enable the oleic acid molecules to be retained on the fiber surface so as to form a lubricating oil film, so that direct contact between friction pairs is avoided, and a stable ultralow friction coefficient is realized. The solid-liquid composite lubricating blended fiber fabric prepared by the invention can show excellent tribological performance under the working conditions of heavy load and low speed, has stable and ultralow friction coefficient, greatly expands the application range of the fiber fabric self-lubricating liner material, and provides a theoretical basis for the solid-liquid composite lubrication of the self-lubricating fabric liner material.
The results of the examples show that the friction coefficient and the wear rate of the solid-liquid composite lubricating blended fiber fabric prepared by the invention are respectively 0.0201-0.0288 and 1.92-2.12 mg (the test conditions are GCr15 stainless steel dual, the test loading force is 500N, the rotating speed is 12mm/s, the room temperature air environment and the running time is 1 h).
Drawings
FIG. 1 is a scanning electron micrograph of a CuBTC porous metal organic framework material prepared in example 2;
FIG. 2 is a thermogravimetric plot of oleic acid, cuBTC porous metal organic framework material (denoted as porous CuBTC), and oily CuBTC porous metal organic framework material (denoted as porous CuBTC + oleic acid) in example 2;
fig. 3 is a graph of typical coefficient of friction curves for the fabric composites prepared in example 2 and comparative example 1.
Detailed Description
The invention provides a preparation method of a solid-liquid composite lubricating blended fiber fabric, which comprises the following steps:
dipping the CuBTC porous metal organic framework material into oleic acid to obtain an oil-containing CuBTC porous metal organic framework material; mixing the oil-containing CuBTC porous metal organic framework material, an adhesive and an organic solvent to obtain an impregnation solution;
mixing 3, 4-dihydroxyphenylethylamine, tris (hydroxymethyl) aminomethane, polyethyleneimine and water to obtain a deposition solution; dipping the PEEK/PTFE blended fiber fabric into the deposition solution to obtain a surface modified PEEK/PTFE blended fiber fabric;
and coating the impregnation liquid on one side surface of the PEEK/PTFE blended fiber fabric with the modified surface, and drying to obtain the solid-liquid composite lubricating blended fiber fabric.
Unless otherwise specified, each raw material involved in the present invention is a commercially available product well known to those skilled in the art.
The method comprises the step of impregnating CuBTC porous metal organic framework material (MOF material) with oleic acid to obtain the oil-containing CuBTC porous metal organic framework material. In the invention, the aperture of the CuBTC porous metal organic framework material is preferably 30-90 nm; the preparation method of the CuBTC porous metal organic framework material preferably comprises the following steps: and mixing copper nitrate, a solvent, acetic acid, triethylamine and trimesic acid to perform solvothermal reaction to obtain the CuBTC porous metal organic framework material.
In the invention, the dosage ratio of the copper nitrate, the acetic acid and the triethylamine is preferably (0.8-1.6) g, (1.2-2.8) mL, (1.0-2.0) mL, more preferably (1.2-1.6) g, (2-2.8) mL, (1.5-2.0) mL; the mass ratio of the copper nitrate to the trimesic acid is preferably (0.8-1.6) to (0.5-1.0), more preferably (1.2-1.6) to (0.6-0.9); in the embodiment of the invention, the copper nitrate is added in the form of copper nitrate trihydrate, and the addition amount of the copper nitrate trihydrate is converted correspondingly according to the mass relationship between the copper nitrate and the copper nitrate trihydrate. In the invention, the solvent preferably comprises one or more of methanol, ethanol and acetonitrile, more preferably methanol, the invention has no special requirement on the dosage of the solvent, and the reaction can be ensured to be smoothly carried out, and in the embodiment of the invention, the dosage ratio of the copper nitrate trihydrate to the solvent is (1.0-2.0) g (20-45) mL. In the present invention, the method of mixing is preferably: dissolving copper nitrate in a solvent, and sequentially adding acetic acid and triethylamine to the obtained solution to perform first stirring and mixing to obtain a mixed solution; adding trimesic acid into the mixed solution to perform second stirring and mixing and ultrasonic dispersion in sequence; the stirring speed of the first stirring and mixing is preferably 500rpm, the time is preferably 1h, and a homogeneous mixed solution is formed through the first stirring and mixing; the stirring speed of the second stirring and mixing is preferably 500rpm, and the time is preferably 2h; the time for the ultrasonic dispersion is preferably 20min.
In the invention, the temperature of the solvothermal reaction is preferably 80-125 ℃, more preferably 100-120 ℃, and the holding time is preferably 16-24 h, more preferably 18-24 h; the solvothermal reaction is preferably carried out in a PTFE reactor. In the process of the solvothermal reaction, copper nitrate and trimesic acid react to generate CuBTC nanoparticles, the CuBTC nanoparticles nucleate to grow and are aggregated and connected to form a unique pore structure (a through hole structure and controllable pore diameter), and the introduction of acetic acid and triethylamine can adjust the growth rate of crystals and prevent the crystals from growing too large. After the solvothermal reaction, the obtained reaction liquid is preferably cooled to room temperature and then centrifuged, and a blue precipitate at the bottom is collected; sequentially washing and drying the blue precipitate by using ethanol to obtain a CuBTC porous metal organic framework material; the number of times of ethanol cleaning is preferably 2-3, the drying temperature is preferably 80 ℃, and the time is preferably 6h. The CuBTC metal organic framework material with the porous structure is prepared by a solvothermal method, the raw materials are cheap and easy to obtain, and the process is simple. The CuBTC metal-organic framework material has a unique pore structure, and hydrogen bond interaction force exists between ligand trimesic acid and oleic acid molecules, so that oleic acid can be well retained in the material.
The method has no special requirement on the using amount of the oleic acid, and the CuBTC porous metal organic framework material can be completely immersed. In the present invention, the time for the impregnation is preferably 12 to 24 hours, more preferably 12 to 15 hours; the impregnation is preferably vacuum impregnation, and the vacuum degree of the vacuum impregnation is preferably 0.05-0.08 MPa; the impregnation may be carried out at room temperature. After the impregnation, the invention preferably carries out centrifugation and solid phase washing on the obtained impregnation system to obtain the oil-containing CuBTC porous metal organic framework material; the speed of the centrifugation is preferably 6000 to 8000rpm, and the time is preferably 10min; the washing reagent adopted by the solid phase washing is preferably ethanol, and redundant oleic acid on the surface of the metal organic framework material is washed away by the solid phase washing. In the present invention, the oil content of the oil-containing CuBTC porous metal organic framework material (i.e. the mass content of oleic acid in the oil-containing CuBTC porous metal organic framework material) is preferably 20 to 60wt%.
After the oil-containing CuBTC porous metal organic framework material is obtained, the oil-containing CuBTC porous metal organic framework material, an adhesive and an organic solvent are mixed to obtain an impregnation liquid. In the present invention, the organic solvent preferably includes one or more of N, N-dimethylformamide, N-dimethylacetamide and dichloromethane, and more preferably N, N-dimethylformamide. In the present invention, the adhesive preferably includes a polyetherimide resin adhesive (PEI adhesive), a phenol resin adhesive, or an epoxy resin adhesive, and more preferably a polyetherimide resin adhesive, which has a good tribological property; the invention has no special requirements on the source of the adhesive, and the corresponding adhesive well known to the technical personnel in the field can be adopted; the adhesive can fix fibers in the fabric composite material and serve as a carrier of the filler, and the adhesive is a bridge for connecting the fibers in the fabric and plays a role in stress transfer. In the invention, the mass ratio of the oil-containing CuBTC porous metal organic framework material to the adhesive to the organic solvent is preferably (0.5-2.5) to (10-20) to (60-90), and more preferably (0.5-2.5) to (15-20) to (80-90). In the present invention, the method of mixing is preferably: placing the oil-containing CuBTC porous metal organic framework material and an adhesive in an organic solvent, and stirring and dispersing the obtained mixed solution to obtain an impregnation solution; the stirring speed of the stirring dispersion is preferably 8000rpm, and the time is preferably 10min, and the stirring dispersion is preferably carried out in a high-speed disperser, and a homogeneous impregnation liquid is formed by the stirring dispersion.
The method comprises the steps of mixing 3, 4-dihydroxyphenylethylamine (namely dopamine), tris (hydroxymethyl) aminomethane, polyethyleneimine and water to obtain codeposition liquid; and (3) dipping the PEEK/PTFE blended fiber fabric into the codeposition liquid to obtain the surface modified PEEK/PTFE blended fiber fabric. In the present invention, the weight average molecular weight Mw of the polyethyleneimine is preferably 600 to 1200; the water is preferably deionized water or ultrapure water; the concentrations of 3, 4-dihydroxyphenylethylamine, tris (hydroxymethyl) aminomethane, and polyethyleneimine in the codeposition solution are preferably (2.0 to 3.0) g/L, (1.0 to 2.0) g/L, and (0.5 to 2.0) g/L, respectively, and more preferably (2.0 to 2.5) g/L, (1.0 to 1.5) g/L, and (1.5 to 2.0) g/L. The present invention preferably dissolves 3, 4-dihydroxyphenylethylamine, tris (hydroxymethyl) aminomethane and polyethyleneimine in water to obtain the co-precipitation solution, and the order of addition of the 3, 4-dihydroxyphenylethylamine, tris (hydroxymethyl) aminomethane and polyethyleneimine is not particularly required.
In the invention, the diameter of the PEEK fiber in the PEEK/PTFE blended fiber fabric is preferably 50-55 μm, and the diameter of the PTFE fiber is preferably 20-30 μm; the volume ratio of the PEEK fiber to the PTFE fiber in the PEEK/PTFE blended fiber fabric is preferably 40-70: 50 to 70, more preferably 40; the preferred areal density of the PEEK/PTFE blended fiber fabric is 400-430 g/m 2 . The source of the PEEK/PTFE blend fiber fabric is not particularly required in the present invention, and the PEEK/PTFE blend fiber fabric can be obtained by using a commercial product well known to those skilled in the art or by self-weaving PEEK fibers and PTFE fibers, and the weaving mode is preferably plain weaving. Before dipping and depositing liquid, the PEEK/PTFE blended fiber fabric is preferably pretreated, and the pretreatment comprises cutting, ultrasonic cleaning and drying which are sequentially carried out; cutting the PEEK/PTFE blended fiber fabric into a target size; the ultrasonic cleaning comprises a first ultrasonic cleaning and a second ultrasonic cleaning which are sequentially carried out, wherein the first ultrasonic cleaning is preferably carried out in normal hexane for a long timeThe time is selected to be 1h, the second ultrasonic cleaning is preferably carried out in acetone, and the time is preferably 1h; mainly removing sizing material and oil agent on the surface of the PEEK/PTFE blended fiber fabric through the ultrasonic cleaning; the drying temperature is preferably 80 ℃ and the drying time is preferably 2h. In the invention, the time for dipping the deposition solution is preferably 12 to 18 hours; the impregnation is preferably carried out under stirring, preferably at a rate of 500rpm. During the dipping process, the 3, 4-dihydroxyphenylethylamine in the codeposition liquid is oxidized into quinone by oxygen, a part of the 3, 4-dihydroxyphenylethylamine is polymerized and deposited on the surface of the fiber, and a part of the 3, 4-dihydroxyphenylethylamine and amino groups of polyethyleneimine (the polyethyleneimine can provide a large amount of amino functional groups) are crosslinked, so that the 3, 4-dihydroxyphenylethylamine is deposited on the surface of the fiber; the tris (hydroxymethyl) aminomethane is used as a buffer solution component, so that the pH value of a reaction system is maintained at about 8.5, and the smooth reaction is ensured; according to the invention, 3, 4-dihydroxyphenylethylamine and polyethyleneimine are coprecipitated on the surface of the PEEK/PTFE blended fiber fabric, so that the roughness and surface active functional groups of the fiber surface are increased. After the dipping, the invention preferably carries out deionized water washing, ethanol washing and drying on the dipped PEEK/PTFE blended fiber fabric in sequence to obtain the surface-modified PEEK/PTFE blended fiber fabric; the times of washing with deionized water and washing with ethanol are independently preferred to be 2-3 times; the drying temperature is preferably 80 ℃, and the drying time is preferably 2-3 h.
After the impregnation liquid and the surface modified PEEK/PTFE blended fiber fabric are obtained, the impregnation liquid is coated on one side surface of the surface modified PEEK/PTFE blended fiber fabric, and the solid-liquid composite lubricating blended fiber fabric is obtained after drying. In the invention, the coating mode is preferably brush coating, in particular, the dipping solution is uniformly brushed on one side surface of the fabric by a brush, and then a glass rod is used for removing the redundant dipping solution on the surface of the fabric. In the present invention, the temperature of the drying is preferably 80 ℃. In the invention, the mass content of the blended fiber fabric in the solid-liquid composite lubricating blended fiber fabric is preferably 70-90%, and more preferably 75-85%; to achieve the content requirement, the above-described coating and drying operations are preferably repeated until the content requirement is achieved. The PEEK/PTFE blended fiber fabric with the modified surface has higher fiber surface roughness and more active functional groups, and a mechanical interlocking structure can be formed between the higher fiber surface roughness of the blended fiber fabric and an adhesive of an impregnating solution in the coating and drying processes, so that the bonding force between the adhesive and the fiber is increased, and the abrasion is reduced; more active functional groups on the fiber surface of the blended fiber fabric can form hydrogen bonds with carboxyl of oleic acid molecules in the impregnation liquid to enable the oleic acid molecules to be retained on the fiber surface so as to form a lubricating oil film, so that direct contact between friction couples is avoided, and stable ultralow friction coefficient is realized.
The invention provides the solid-liquid composite lubricating blended fiber fabric prepared by the preparation method in the technical scheme. The solid-liquid composite lubricating blended fiber fabric provided by the invention can show excellent tribological properties under the working conditions of heavy load and low speed, has stable and ultralow friction coefficient, greatly expands the application range of the fiber fabric self-lubricating liner material, and provides a theoretical basis for the solid-liquid composite lubrication of the self-lubricating fabric liner material. The invention has no special requirements on the specific conditions of the heavy-load and low-speed working conditions, and the working conditions of the heavy-load and low-speed which are well known by the technical personnel in the field can be adopted, generally, the load above 10MPa can be regarded as the heavy load, and the speed below 100mm/s can be regarded as the low speed; in the embodiment of the invention, the heavy-load and low-speed working condition is a friction working condition with the load of 10-25 MPa and the speed of 12 mm/s.
The invention provides the application of the solid-liquid composite lubricating blended fiber fabric as a self-lubricating liner material. In the present invention, the self-lubricating liner material is preferably a bearing self-lubricating liner material. In the application process, the surface of the solid-liquid composite lubricating blended fiber fabric coated with the impregnating solution is a lubricating surface. The present invention is not particularly limited to the specific method of application, and may be applied by any method known to those skilled in the art for applying a gasket material.
The solid-liquid composite lubricating blended fiber fabric provided by the invention and the preparation method and application thereof are described in detail by combining the following examples, but the solid-liquid composite lubricating blended fiber fabric and the preparation method and the application thereof are not to be construed as limiting the protection scope of the invention.
In each embodiment, the PEEK/PTFE blended fiber fabric is formed by plain weaving PEEK fibers and PTFE fibers of Deyang Zhengjia chemical technology Co., ltd, the diameter of the PEEK fibers in the PEEK/PTFE blended fiber fabric is 50 μm, the diameter of the PTFE fibers in the PEEK/PTFE blended fiber fabric is 30 μm, and the volume ratio of the PEEK fibers to the PTFE fibers is 40: the 60,PEEK/PTFE blend fiber fabric had an areal density of 430g/m 2 (ii) a The polyetherimide resin adhesive (PEI adhesive) is from the research institute of synthetic resin in Shanghai; copper nitrate trihydrate (Cu (NO) 3 ) 2 ·3H 2 O), trimesic acid (H) 3 BTC), acetic acid (CH) 3 COOH), triethylamine (N (C) 2 H 5 ) 3 ) Methanol (CH) 3 OH) and oleic acid (C) 18 H 34 O 2 ) From Shanghai Aladdin Biotechnology, inc.; 3, 4-Dihydroxyphenylethylamine, polyethyleneimine (Mw: 600) and tris (hydroxymethyl) aminomethane were obtained from Sahn's chemical technology (Shanghai).
Example 1
A solid-liquid composite lubricating blended fiber fabric is prepared by the following steps:
ultrasonically cleaning the PEEK/PTFE blended fiber fabric in normal hexane and acetone for 1h in sequence, taking out, and drying in an oven at 80 ℃ for 2h for later use; dissolving 2.0g of 3, 4-dihydroxyphenylethylamine, 1.2g of tris (hydroxymethyl) aminomethane and 2.0g of polyethyleneimine in 1L of ultrapure water to form a coprecipitation solution; and (3) placing the cleaned blended fabric into the codeposition liquid, magnetically stirring for 18h at the speed of 500rpm, taking out, sequentially washing with ultrapure water and ethanol, and drying for 2h in a vacuum drying oven at the temperature of 80 ℃ to obtain the PEEK/PTFE blended fabric with the modified surface.
1.7392g of copper nitrate trihydrate, 2.5mL of acetic acid and 2mL of triethylamine are sequentially added into 44mL of methanol, and magnetic stirring is carried out at 500rpm for 1h; then 0.8400g of trimesic acid is added to be magnetically stirred for 2 hours, and then ultrasonic dispersion is carried out for 20 minutes; and transferring the obtained homogeneous solution into a 100mL PTFE reaction kettle, preserving the heat for 18h at 120 ℃, cooling the reaction kettle to room temperature, centrifuging, collecting blue precipitate, washing with ethanol for 2-3 times, and treating in a vacuum oven at 80 ℃ for 6h to obtain the CuBTC porous metal organic framework material. And (3) placing the CuBTC porous metal organic framework material into oleic acid, vacuum-impregnating for 12h at room temperature (the vacuum degree is 0.08 MPa), centrifuging for 10min at 6000rpm, collecting blue solid, and washing off redundant oleic acid on the surface by using ethanol to obtain the oil-containing CuBTC porous metal organic framework material.
0.5g of the oil-containing CuBTC porous metal organic framework material and 20g of the PEI adhesive were placed in 80gN, N-dimethylformamide, and the above mixed solution was dispersed with stirring at 8000rpm for 10 minutes using a high-speed disperser to form a good suspension as an impregnation solution. And then uniformly brushing the impregnation liquid on one side surface of the fabric by using a brush, removing redundant impregnation liquid on the surface by using a glass rod, drying in a vacuum oven at 80 ℃, and repeating brushing and drying until the mass content of the blended fiber fabric in the blended fiber fabric composite material is 80% to obtain the solid-liquid composite lubricating blended fiber fabric.
Preparing a solid-liquid composite lubricating blended fiber fabric into a friction test sample:
the prepared solid-liquid composite lubricating blended fiber fabric (the side not coated with the impregnation liquid) is adhered to a pin (the effective area is 38.5 mm) prepared from 45# steel by using an epoxy adhesive 2 ) And room-temperature curing at a pressure of 0.1MPa for 24 hours, thereby obtaining a friction test sample.
And (3) carrying out tribology performance test on the obtained friction test sample by using a vertical universal friction and wear testing machine, wherein the test conditions are as follows: the solid-liquid composite lubricating blended fiber fabric (one side coated with the dipping solution) and GCr15 stainless steel are subjected to paired and paired grinding, the test loading force is 500N, the rotating speed is 12mm/s (the paired rotating radius is 11.5 mm), the room-temperature air environment is adopted, the running time is 1h, the friction coefficient and the abrasion loss are the average values of three tests, and the test result is as follows: the friction coefficient and the abrasion loss of the solid-liquid composite lubricating blended fiber fabric were 0.0280 and 2.12mg, respectively.
Example 2
A solid-liquid composite lubricating blended fiber fabric is prepared by the following steps:
ultrasonically cleaning a PEEK/PTFE (polyetheretherketone/polytetrafluoroethylene) blended fiber fabric in normal hexane and acetone for 1h in sequence, taking out, and drying in an oven at 80 ℃ for 2h for later use; 2.0g of 3, 4-dihydroxyphenylethylamine, 1.2g of tris (hydroxymethyl) aminomethane and 2.0g of polyethyleneimine were dissolved in 1L of ultrapure water to form a coprecipitate solution; and (3) putting the cleaned blended fabric into the coprecipitation liquid, magnetically stirring for 18h at the speed of 500rpm, taking out, sequentially washing with ultrapure water and ethanol, and drying in a vacuum drying oven at the temperature of 80 ℃ for 2h to obtain the PEEK/PTFE blended fabric with the modified surface.
1.9324g of copper nitrate trihydrate, 2.0mL of acetic acid and 1.8mL of triethylamine are sequentially added into 44mL of methanol, and magnetic stirring is carried out at 500rpm for 1h; then 0.8400g of trimesic acid is added, magnetically stirred for 2 hours, and then ultrasonic dispersion is carried out for 20 minutes; transferring the obtained homogeneous solution into a 100mL PTFE reaction kettle, and preserving the temperature for 24h at 120 ℃; and after the reaction kettle is cooled to room temperature, centrifuging and collecting blue precipitate, washing the blue precipitate for 2 to 3 times by using ethanol, and then treating the blue precipitate in a vacuum oven at the temperature of 80 ℃ for 6 hours to obtain the CuBTC porous metal organic framework material. And (3) placing the CuBTC porous metal organic framework material into oleic acid, vacuum-impregnating for 12h at room temperature (the vacuum degree is 0.08 MPa), then centrifuging for 10min at 6000rpm, collecting blue solid, and washing off redundant oleic acid on the surface by using ethanol to obtain the oil-containing CuBTC porous metal organic framework material.
1g of the oil-containing CuBTC porous metal organic framework material and 20g of the PEI adhesive were placed in 80gN, N-dimethylformamide, and the above mixed solution was dispersed with stirring at 8000rpm using a high speed disperser for 10min to form a good suspension as an impregnation solution. And then uniformly brushing the impregnation liquid on one side surface of the fabric by using a brush, removing redundant impregnation liquid on the surface by using a glass rod, drying in a vacuum oven at 80 ℃, and repeating brushing and drying until the mass content of the blended fiber fabric in the blended fiber fabric composite material is 80% to obtain the solid-liquid composite lubricating blended fiber fabric.
FIG. 1 is a scanning electron micrograph of a CuBTC porous metal organic framework material prepared in example 2. As can be seen from FIG. 1, the CuBTC porous metal organic framework material has uniformly distributed nano-pores (the pore diameter is 30-90 nm), and can be used as a medium for storing lubricating oil.
Fig. 2 is a thermogravimetric plot of oleic acid, a porous metal organic framework material of cutbc (denoted as porous cutbc), and a porous metal organic framework material of oil-bearing cutbc (denoted as porous cutbc + oleic acid) in example 2. FIG. 2 shows that the oil content of the oil-containing CuBTC porous metal organic framework material reaches 32wt%, and the CuBTC porous metal organic framework material has excellent oil storage capacity.
Preparing a solid-liquid composite lubricating blended fiber fabric into a friction test sample:
the prepared solid-liquid composite lubricating blended fiber fabric (the side not coated with the impregnation liquid) is adhered to a pin (the effective area is 38.5 mm) prepared from 45# steel by using an epoxy adhesive 2 ) And room-temperature curing at a pressure of 0.1MPa for 24 hours, thereby obtaining a friction test sample.
And (3) carrying out tribology performance test on the obtained friction test sample by using a vertical universal friction and wear testing machine, wherein the test conditions are as follows: the solid-liquid composite lubricating blended fiber fabric (one side coated with the dipping solution) and GCr15 stainless steel are subjected to paired grinding, the test loading force is 500N, the rotating speed is 12mm/s, the room temperature air environment is adopted, the running time is 1h, the friction coefficient and the abrasion loss are average values of three tests, and the test result is as follows: the friction coefficient and the abrasion loss of the solid-liquid composite lubricating blended fiber fabric are 0.0201 and 1.97mg respectively.
Example 3
A solid-liquid composite lubricating blended fiber fabric is prepared by the following steps:
ultrasonically cleaning a PEEK/PTFE (polyetheretherketone/polytetrafluoroethylene) blended fiber fabric in normal hexane and acetone for 1h in sequence, taking out, and drying in an oven at 80 ℃ for 2h for later use; dissolving 2.0g of 3, 4-dihydroxyphenylethylamine, 1.2g of tris (hydroxymethyl) aminomethane, and 2.0g of polyethyleneimine in 1L of ultrapure water to form a codeposition solution; and (3) placing the cleaned blended fabric into the codeposition liquid, magnetically stirring at the speed of 500rpm for 18h, taking out, sequentially washing with ultrapure water and ethanol, and drying in a vacuum drying oven at the temperature of 80 ℃ for 2h to obtain the PEEK/PTFE blended fabric with the modified surface.
1.7392g of copper nitrate trihydrate, 2.5mL of acetic acid and 2mL of triethylamine are added in sequence to 44mL of methanol, and the mixture is magnetically stirred at 500rpm for 1 hour; then 0.8400g of trimesic acid is added, magnetically stirred for 2 hours, and then ultrasonic dispersion is carried out for 20 minutes; and transferring the obtained homogeneous solution into a 100mL PTFE reaction kettle, preserving the heat for 24h at 120 ℃, cooling the reaction kettle to room temperature, centrifuging, collecting blue precipitate, washing with ethanol for 2-3 times, and treating in a vacuum oven at 80 ℃ for 6h to obtain the CuBTC porous metal organic framework material. And (3) placing the CuBTC porous metal organic framework material into oleic acid, vacuum-impregnating for 12h at room temperature (the vacuum degree is 0.08 MPa), then centrifuging for 10min at 6000rpm, collecting blue solid, and washing off redundant oleic acid on the surface by using ethanol to obtain the oil-containing CuBTC porous metal organic framework material.
2g of the oil-containing CuBTC porous metal organic framework material and 20g of the PEI adhesive were placed in 80gN, N-dimethylformamide, and the above-mentioned mixed solution was dispersed by stirring at 8000rpm with a high-speed dispersion machine for 10min to form a good suspension as an impregnation solution. And then uniformly brushing the impregnation liquid on one side surface of the fabric by using a brush, removing redundant impregnation liquid by using a glass rod, drying in a vacuum oven at 80 ℃, and repeating the brushing and drying operations until the mass content of the blended fiber fabric in the blended fiber fabric composite material is 80% to obtain the solid-liquid composite lubricating blended fiber fabric.
Preparing a solid-liquid composite lubricating blended fiber fabric into a friction test sample:
the prepared solid-liquid composite lubricating blended fiber fabric (the side not coated with the impregnation liquid) is adhered to a pin (the effective area is 38.5 mm) prepared from 45# steel by using an epoxy adhesive 2 ) And room-temperature curing at a pressure of 0.1MPa for 24 hours, thereby obtaining a friction test sample.
And (3) carrying out tribology performance test on the obtained friction test sample by using a vertical universal friction and wear testing machine, wherein the test conditions are as follows: the solid-liquid composite lubricating blended fiber fabric (one side coated with the dipping solution) and GCr15 stainless steel are subjected to paired grinding, the test loading force is 500N, the rotating speed is 12mm/s, the room temperature air environment is adopted, the running time is 1h, the friction coefficient and the abrasion loss are average values of three tests, and the test result is as follows: the friction coefficient and abrasion loss of the solid-liquid composite lubricating blended fiber fabric were 0.0288 and 1.92mg, respectively.
Example 4
A solid-liquid composite lubricating blended fiber fabric is prepared by the following steps:
ultrasonically cleaning a PEEK/PTFE (polyetheretherketone/polytetrafluoroethylene) blended fiber fabric in normal hexane and acetone for 1h in sequence, taking out, and drying in an oven at 80 ℃ for 2h for later use; dissolving 2.0g of 3, 4-dihydroxyphenylethylamine, 1.2g of tris (hydroxymethyl) aminomethane and 2.0g of polyethyleneimine in 1L of ultrapure water to form a coprecipitation solution; and (3) placing the cleaned blended fabric into the codeposition liquid, magnetically stirring for 18h at the speed of 500rpm, taking out, sequentially washing with ultrapure water and ethanol, and drying for 2h in a vacuum drying oven at the temperature of 80 ℃ to obtain the PEEK/PTFE blended fabric with the modified surface.
1.7392g of copper nitrate trihydrate, 2.5mL of acetic acid and 2mL of triethylamine are sequentially added into 44mL of methanol, and magnetic stirring is carried out at 500rpm for 1h; then 0.8400g of trimesic acid is added, magnetically stirred for 2 hours, and then ultrasonic dispersion is carried out for 20 minutes; and transferring the obtained homogeneous solution into a 100mL PTFE reaction kettle, preserving the heat for 24h at 120 ℃, cooling the reaction kettle to room temperature, centrifuging, collecting blue precipitate, washing with ethanol for 2-3 times, and treating in a vacuum oven at 80 ℃ for 6h to obtain the CuBTC porous metal organic framework material. And (3) placing the CuBTC porous metal organic framework material into oleic acid, vacuum-impregnating for 12h (vacuum degree of 0.08 MPa) at room temperature, then centrifuging for 10min at 6000rpm, collecting blue solid, and washing away redundant oleic acid on the surface by using ethanol to obtain the oil-containing CuBTC porous metal organic framework material.
Placing 2.5g of oil-containing CuBTC porous metal organic framework material and 20g of PEI adhesive in 80gN, N-dimethylformamide, and stirring and dispersing the mixed solution by using a high-speed dispersion machine at 8000rpm for 10min to form a good suspension as an impregnation solution; and then uniformly brushing the impregnation liquid on one side surface of the fabric by using a brush, removing redundant impregnation liquid on the surface by using a glass rod, drying in a vacuum oven at 80 ℃, and repeating the brushing and drying operations until the mass content of the blended fiber fabric in the blended fiber fabric composite material is 80% to obtain the solid-liquid composite lubricating blended fiber fabric.
Preparing a solid-liquid composite lubricating blended fiber fabric into a friction test sample:
adhering the prepared solid-liquid composite lubricating blended fiber fabric (the surface not coated with the impregnating solution) to No. 45 steel by using an epoxy adhesivePin (effective area 38.5 mm) 2 ) And room-temperature curing at a pressure of 0.1MPa for 24 hours, thereby obtaining a friction test sample.
And (3) carrying out tribology performance test on the obtained friction test sample by using a vertical universal friction and wear testing machine, wherein the test conditions are as follows: the solid-liquid composite lubricating blended fiber fabric (one side coated with the dipping solution) and GCr15 stainless steel are subjected to paired grinding, the test loading force is 500N, the rotating speed is 12mm/s, the room temperature air environment is adopted, the running time is 1h, the friction coefficient and the abrasion loss are average values of three tests, and the test result is as follows: the coefficient of friction and the amount of abrasion of the solid-liquid composite lubricating blend fiber fabric were 0.0248 and 2.11mg, respectively.
Comparative example 1
Ultrasonically cleaning a PEEK/PTFE (polyetheretherketone/polytetrafluoroethylene) blended fiber fabric in normal hexane and acetone for 1h in sequence, taking out, and drying in an oven at 80 ℃ for 2h for later use; dissolving 2.0g of 3, 4-dihydroxyphenylethylamine, 1.2g of tris (hydroxymethyl) aminomethane, and 2.0g of polyethyleneimine in 1L of ultrapure water to form a codeposition solution; and (3) placing the cleaned blended fabric into codeposition liquid, magnetically stirring for 18h at the speed of 500rpm, taking out, sequentially washing with ultrapure water and ethanol, and drying in a vacuum drying oven at the temperature of 80 ℃ for 2h to obtain the PEEK/PTFE blended fabric with the modified surface.
1.9324g of copper nitrate trihydrate, 2.0mL of acetic acid and 1.8mL of triethylamine are sequentially added into 44mL of methanol, and magnetic stirring is carried out at 500rpm for 1h; and then adding 0.8400g of trimesic acid, magnetically stirring for 2 hours, then performing ultrasonic dispersion for 20 minutes, transferring the obtained homogeneous solution into a 100mL PTFE reaction kettle, preserving heat for 24 hours at 120 ℃, centrifuging and collecting blue precipitate after the reaction kettle is cooled to room temperature, washing with ethanol for 2-3 times, and then treating in a vacuum oven at 80 ℃ for 6 hours to obtain the CuBTC porous metal organic framework material.
Placing 1g of CuBTC porous metal organic framework material and 20g of PEI adhesive in 80g of N, N-dimethylformamide, and stirring the mixed solution for 10min at 8000rpm by using a high-speed dispersion machine to form a good suspension as an impregnation solution; and then uniformly brushing the impregnation liquid on one side surface of the fabric by using a brush, removing the redundant impregnation liquid on the surface by using a glass rod, drying in a vacuum oven at 80 ℃, and repeating the brushing and drying operations until the mass content of the blended fiber fabric in the blended fiber fabric composite material is 80% to obtain the fabric composite material containing the CuBTC.
The prepared fabric composite containing the CuBTC was prepared into a friction test sample:
the prepared fabric composite (side not coated with the impregnation solution) containing the CuBTC was bonded to a pin (effective area 38.5 mm) made of 45# steel using an epoxy adhesive 2 ) And room temperature curing at a pressure of 0.1MPa for 24 hours, thereby obtaining a friction test sample.
And (3) performing tribology performance test on the prepared friction test sample by using a vertical universal friction and wear testing machine, wherein the test conditions are as follows: the fabric composite material (the side coated with the dipping solution) containing CuBTC and GCr15 stainless steel are subjected to paired grinding, the test loading force is 500N, the rotating speed is 12mm/s, the room temperature air environment is adopted, the running time is 1h, the friction coefficient and the abrasion loss are the average values of three tests, and the test result is as follows: the fabric composite containing CuBTC had a coefficient of friction and an amount of abrasion of 0.0989 and 0.52mg, respectively.
Comparative example 2
And ultrasonically cleaning the PEEK/PTFE blended fiber fabric in normal hexane and acetone for 1h in sequence, taking out the PEEK/PTFE blended fiber fabric, and drying the PEEK/PTFE blended fiber fabric in an oven at the temperature of 80 ℃ for 2h for later use.
1.9324g of copper nitrate trihydrate, 2.0mL of acetic acid and 1.8mL of triethylamine are sequentially added into 44mL of methanol, and magnetic stirring is carried out at 500rpm for 1h; then 0.8400g of trimesic acid is added for magnetic stirring for 2 hours, and ultrasonic dispersion is carried out for 20 minutes; and transferring the obtained homogeneous solution into a 100mL PTFE reaction kettle, preserving the heat for 24h at 120 ℃, cooling the reaction kettle to room temperature, centrifuging, collecting blue precipitate, washing with ethanol for 2-3 times, and treating in a vacuum oven at 80 ℃ for 6h to obtain the CuBTC porous metal organic framework material. And (3) placing the CuBTC porous metal organic framework material into oleic acid, vacuum-impregnating for 12h at room temperature (the vacuum degree is 0.08 MPa), then centrifuging for 10min at 6000rpm, collecting blue solid, and washing off redundant oleic acid on the surface by using ethanol to obtain the oil-containing CuBTC porous metal organic framework material.
1.0g of the oil-containing CuBTC porous metal organic framework material and 20g of the PEI adhesive were placed in 80gN, N-dimethylformamide, and the above mixed solution was dispersed with stirring at 8000rpm for 10 minutes using a high-speed disperser to form a good suspension as an impregnation solution. And then uniformly brushing the impregnation liquid on one side surface of the fabric by using a brush, removing the redundant impregnation liquid on the surface by using a glass rod, drying in a vacuum oven at 80 ℃, and repeating the brushing and drying operations until the mass content of the blended fiber fabric in the blended fiber fabric composite material is 80% to obtain the fabric composite material containing the porous oil-containing CuBTC.
The prepared fabric composite containing porous oil-containing CuBTC was prepared into a friction test sample:
a fabric composite (side not coated with the impregnation solution) containing porous, oil-impregnated CuBTC was bonded to a 45# steel pin (38.5 mm effective area) using an epoxy adhesive 2 ) And room-temperature curing at a pressure of 0.1MPa for 24 hours, thereby obtaining a friction test sample.
And (3) performing tribology performance test on the prepared friction test sample by using a vertical universal friction and wear testing machine, wherein the test conditions are as follows: the fabric composite material (one side coated with the dipping solution) containing the porous oil-containing CuBTC and GCr15 stainless steel are subjected to paired grinding, the test loading force is 500N, the rotating speed is 12mm/s, the room temperature air environment is adopted, the running time is 1h, the friction coefficient and the abrasion loss are average values of three tests, and the test result is as follows: the coefficient of friction and the amount of wear of the fabric composite containing porous oiled CuBTC were 0.0579 and 3.47mg, respectively.
Fig. 3 is a typical friction coefficient graph of the fabric composite prepared in example 2 and comparative example 1, and it can be seen from fig. 3 that the fabric composite prepared in example 2 by using the oil-containing porous metal organic framework material of CuBTC has a lower friction coefficient and a smoother friction curve compared to the fabric composite prepared in comparative example 1 by not impregnating the porous metal organic framework material of CuBTC with oleic acid, which indicates that the solid-liquid composite lubricating blended fiber fabric prepared in example 2 has an excellent lubricating effect.
The friction coefficients and the abrasion amounts of the fabric composites prepared in examples 1 to 4 and comparative examples 1 to 2 are shown in table 1.
TABLE 1 Friction coefficient and abrasion loss of the textile composite materials prepared in the examples and the additional examples
Item Example 1 Example 2 Example 3 Example 4 Comparative example 1 Comparative example 2
Coefficient of friction 0.0280 0.0201 0.0288 0.0248 0.0989 0.0579
Abrasion loss/mg 2.12 1.97 1.92 2.11 0.52 3.47
As can be seen from Table 1: (1) The CuBTC porous metal organic framework material in the comparative example 1 is not impregnated with oleic acid, so that the friction coefficient of the prepared fabric composite material is higher, while the friction coefficient of the fiber fabric composite material is obviously reduced after the CuBTC porous metal organic framework materials with different contents are added in the examples 1-4 of the invention, which shows that the oil-containing CuBTC material can greatly reduce the friction coefficient of the fabric composite material under a heavy load working condition. Oleic acid is released to a friction interface to form a layer of oil film under the stimulation of pressure in the friction process, so that the direct contact between the fabric and a metal couple is avoided, and the effect of reducing the friction coefficient is achieved; however, oleic acid was squeezed out of a part of the interface during the rubbing process to increase the amount of abrasion, so that examples 1 to 4 had a higher amount of abrasion. (2) After the fiber fabric is modified by 3, 4-dihydroxyphenylethylamine and polyethyleneimine, oleic acid and active functional groups (hydroxyl and amino) on the surface of a fiber matrix can form a hydrogen bond to reduce the loss of the oleic acid, and the fiber fabric in the comparative example 2 is not modified by the 3, 4-dihydroxyphenylethylamine and the polyethyleneimine, so that the friction coefficient and the abrasion loss of the comparative example 2 are increased. The research of the comparative example shows that the oil-containing CuBTC porous metal organic framework material in the example has excellent lubricating function and the reasonability and feasibility of 3, 4-dihydroxyphenylethylamine/polyethyleneimine modified fiber fabric.
In addition, the solid-liquid composite lubricating blended fiber fabric prepared in the example 2 is tested according to the test method of the example 2, only the test loading force is increased to 900N, and the friction performance under the friction working condition is tested. And (3) testing results: the coefficient of friction and the amount of abrasion of the solid-liquid composite lubricating blend fiber fabric were 0.0245 and 4.28mg, respectively. The fiber fabric composite material still has lower friction coefficient and abrasion loss under high load (900N), and the fabric composite material prepared by the invention still has excellent tribological performance under heavy load working conditions.
The embodiment shows that the solid-liquid composite lubricating blended fiber fabric prepared by the invention can show excellent tribological performance under the working conditions of heavy load and low speed, and has stable and ultralow friction coefficient, thereby greatly expanding the application range of the fiber fabric self-lubricating liner material.
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. A preparation method of a solid-liquid composite lubricating blended fiber fabric comprises the following steps:
dipping the CuBTC porous metal organic framework material into oleic acid to obtain an oil-containing CuBTC porous metal organic framework material; mixing the oil-containing CuBTC porous metal organic framework material, an adhesive and an organic solvent to obtain an impregnation solution;
mixing 3, 4-dihydroxyphenylethylamine, tris (hydroxymethyl) aminomethane, polyethyleneimine and water to obtain a codeposition solution; dipping the PEEK/PTFE blended fiber fabric into the codeposition liquid to obtain a surface-modified PEEK/PTFE blended fiber fabric;
and coating the impregnation liquid on one side surface of the PEEK/PTFE blended fiber fabric with the modified surface, and drying to obtain the solid-liquid composite lubricating blended fiber fabric.
2. The method according to claim 1, wherein the pore size of the CuBTC porous metal organic framework material is 30 to 90nm.
3. The method of manufacturing according to claim 1 or 2, wherein the method of manufacturing the CuBTC porous metal organic framework material comprises the steps of:
mixing copper nitrate, a solvent, acetic acid, triethylamine and trimesic acid to carry out solvothermal reaction to obtain a CuBTC porous metal organic framework material;
the dosage ratio of the copper nitrate, the acetic acid and the triethylamine is (0.8-1.6) g, (1.2-2.8) mL, (1.0-2.0) mL; the mass ratio of the copper nitrate to the trimesic acid is (0.8-1.6) to (0.5-1.0); the temperature of the solvothermal reaction is 80-125 ℃, and the heat preservation time is 16-24 h.
4. The method according to claim 1, wherein the time for immersing the oleic acid is 12 to 24 hours; the oil content of the oil-containing CuBTC porous metal organic framework material is 20-60 wt%.
5. The method of manufacturing of claim 1, wherein the adhesive comprises a polyetherimide resin adhesive, a phenolic resin adhesive, or an epoxy resin adhesive; the organic solvent comprises one or more of N, N-dimethylformamide, N-dimethylacetamide and dichloromethane; the mass ratio of the oil-containing CuBTC porous metal organic framework material to the adhesive to the organic solvent is (0.5-2.5) to (10-20) to (60-90).
6. The preparation method of claim 1, wherein the PEEK fiber in the PEEK/PTFE blended fiber fabric has a diameter of 50 to 55 μm, and the PTFE fiber has a diameter of 20 to 30 μm; the surface density of the PEEK/PTFE blended fiber fabric is 400-430 g/m 2 。
7. The method of claim 1 wherein the concentrations of 3, 4-dihydroxyphenylethylamine, tris (hydroxymethyl) aminomethane, and polyethyleneimine in the codeposition solution are (2.0-3.0) g/L, (1.0-2.0) g/L, and (0.5-2.0) g/L, respectively; the time for dipping the codeposition solution is 12-18 h.
8. The preparation method according to claim 1, wherein the mass content of the blended fiber fabric in the solid-liquid composite lubricating blended fiber fabric is 70-90%.
9. The solid-liquid composite lubricating blended fiber fabric prepared by the preparation method of any one of claims 1 to 8.
10. Use of the solid-liquid composite lubricated blend fiber fabric of claim 9 as a self-lubricating liner material.
CN202210983888.XA 2022-08-17 2022-08-17 Solid-liquid composite lubrication blend fiber fabric and preparation method and application thereof Active CN115198532B (en)

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