CN115198513B - MXene@SiC solvent-free nanofluid, preparation method and application thereof, composite lubricating material and preparation method thereof - Google Patents

MXene@SiC solvent-free nanofluid, preparation method and application thereof, composite lubricating material and preparation method thereof Download PDF

Info

Publication number
CN115198513B
CN115198513B CN202210895030.8A CN202210895030A CN115198513B CN 115198513 B CN115198513 B CN 115198513B CN 202210895030 A CN202210895030 A CN 202210895030A CN 115198513 B CN115198513 B CN 115198513B
Authority
CN
China
Prior art keywords
mxene
sic
nano
solvent
nanofluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210895030.8A
Other languages
Chinese (zh)
Other versions
CN115198513A (en
Inventor
袁军亚
张招柱
姜葳
杨明明
李佩隆
储凡杰
赵鑫
刘维民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lanzhou Institute of Chemical Physics LICP of CAS
Original Assignee
Lanzhou Institute of Chemical Physics LICP of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lanzhou Institute of Chemical Physics LICP of CAS filed Critical Lanzhou Institute of Chemical Physics LICP of CAS
Priority to CN202210895030.8A priority Critical patent/CN115198513B/en
Publication of CN115198513A publication Critical patent/CN115198513A/en
Application granted granted Critical
Publication of CN115198513B publication Critical patent/CN115198513B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • D06M11/73—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 carbon or compounds thereof
    • D06M11/74—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 carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
    • 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
    • D06M11/77—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 silicon or compounds thereof
    • 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
    • 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
    • D06M13/10—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
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D06M13/238—Tannins, e.g. gallotannic acids
    • 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
    • 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
    • D06M13/46—Compounds containing quaternary nitrogen atoms
    • D06M13/463—Compounds containing quaternary nitrogen atoms derived from monoamines
    • 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
    • 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
    • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
    • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
    • D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
    • 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
    • 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
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/356—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms
    • D06M15/3562—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms containing nitrogen
    • 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
    • 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
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
    • D06M15/41—Phenol-aldehyde or phenol-ketone resins
    • 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
    • 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
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/53—Polyethers
    • 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
    • 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
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/61—Polyamines polyimines
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/35—Abrasion, pilling or fibrillation resistance
    • 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
    • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention belongs to the technical field of solid lubrication, and particularly relates to MXene@SiC solvent-free nanofluid, a preparation method and application thereof, a composite lubricating material and a preparation method thereof. The MXene@SiC solvent-free nanofluid provided by the invention comprises an MXene@SiC hybrid, an inner canopy covalently grafted to the surface of the MXene@SiC hybrid, and an outer canopy covalently grafted to the surface of the inner canopy. The MXene@SiC solvent-free nanofluid provided by the invention is used as a reinforcing filler, so that the tribological performance of the composite material of the Baslt/PTFE blended fabric can be obviously improved. Meanwhile, the mixed solution of tannic acid and polyethyleneimine is adopted to modify the surface of the Baslt/PTFE blended fabric, so that the interface bonding performance between the blended fabric and the nano fluid-resin matrix is improved, and the tribological performance of the blended fabric composite material is further improved.

Description

MXene@SiC solvent-free nanofluid, preparation method and application thereof, composite lubricating material and preparation method thereof
Technical Field
The invention belongs to the technical field of solid lubrication, and particularly relates to MXene@SiC solvent-free nanofluid, a preparation method and application thereof, a composite lubricating material and a preparation method thereof.
Background
The Basalt fiber/polytetrafluoroethylene (Basalt/PTFE) blended fabric composite material combines the outstanding mechanical property of Basalt fibers and the excellent lubricating property of polytetrafluoroethylene fibers, so that the Basalt fiber/PTFE blended fabric composite material is used as a self-lubricating joint bearing lining and is used for guaranteeing stable and long-acting operation of engineering equipment. However, with the rapid development of science and technology, the operation conditions of engineering machinery equipment are more severe, and higher requirements are also put on the tribology performance of the blended fabric composite material, and especially the operation conditions of extreme conditions such as high temperature, heavy load and the like need to be met. Accordingly, there is a need for further improvements and improvements in the load bearing, lubrication and temperature resistance properties of fabric composites.
The incorporation of nano-reinforcing fillers is considered a simple and effective way of improving the tribological properties of the blend fabric composites. Currently, different types of fillers, including graphene oxide, carbon nanotubes, or metal borides, are introduced into textile composites and effective progress is made. However, the reinforcing effect of the filler on the tribological properties of the fabric composite material is limited at present, and the effective improvement of the tribological properties of the fabric composite material is not realized. Moreover, in view of the smooth surface of the fibers of the Baslt/PTFE blend fabric and the lack of active reactive groups, the effective transfer of stress of the fabric liner in the friction process is limited, and when the Baslt/PTFE blend fabric is modified by the nano reinforcing filler, effective interface bonding effect is difficult to form between the blend fabric and a resin matrix containing the nano reinforcing filler, and the improvement of the tribological performance of the blend fabric is also influenced.
Disclosure of Invention
The invention aims to provide MXene@SiC solvent-free nanofluid, a preparation method and application thereof, a composite lubricating material and a preparation method. Meanwhile, the mixed solution of tannic acid and polyethyleneimine is adopted to modify the surface of the Baslt/PTFE blended fabric, so that the interface bonding performance between the blended fabric and the nano fluid-resin matrix is improved, and the tribological performance of the blended fabric composite material is further improved.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides an MXene@SiC solvent-free nanofluid, which comprises an MXene@SiC hybrid, an inner canopy covalently grafted to the surface of the MXene@SiC hybrid, and an outer canopy covalently grafted to the surface of the inner canopy; the MXene@SiC hybrid comprises an MXene nano sheet and a SiC nano wire loaded on the MXene nano sheet; the inner canopy is an epoxy silane coupling agent; the outer canopy is polyetheramine.
Preferably, the diameter of the SiC nanowire is 200-500 nm; the length of the SiC nanowire is 5-20 mu m.
Preferably, the preparation method of the MXene@SiC hybrid comprises the following steps:
mixing a SiC nanowire, a cationic surfactant and water, and modifying the SiC nanowire by the cationic surfactant to obtain a modified SiC nanowire;
and mixing the MXene nano-sheet, the modified SiC nano-wire and water, and performing electrostatic self-assembly reaction on the surface of the MXene nano-sheet to obtain the MXene@SiC hybrid.
Preferably, the mass ratio of the MXene nano-sheet to the modified SiC nano-wire is (0.5-1): 0.5-1.
The invention provides a preparation method of MXene@SiC solvent-free nanofluid, which comprises the following steps of:
mixing an MXene@SiC hybrid, an epoxy silane coupling agent and an organic solvent to perform covalent grafting reaction, and covalently grafting an inner canopy on the surface of the MXene@SiC hybrid to obtain a dispersion liquid of the hybrid grafted with the inner canopy;
and mixing the dispersion liquid of the hybrid grafted with the inner canopy with polyetheramine to perform an addition reaction, and covalently grafting an outer canopy on the surface of the inner canopy to obtain the MXene@SiC solvent-free nanofluid.
Preferably, the mass ratio of the MXene@SiC hybrid to the epoxy silane coupling agent is 1 (1-2); the molar ratio of the epoxy silane coupling agent to the polyether amine is 1 (1-1.2).
The invention provides an application of the MXene@SiC solvent-free nanofluid prepared by the technical scheme or the preparation method of the MXene@SiC solvent-free nanofluid as a nano reinforcing filler in a fabric composite lubricating material.
The invention provides a preparation method of a composite lubricating material, which comprises the following steps:
dipping basalt fiber/polytetrafluoroethylene blended fabric into mixed solution of tannic acid and polyethyleneimine for surface modification to obtain surface modified basalt fiber/polytetrafluoroethylene blended fabric;
mixing the nanofluid reinforcing filler with the resin solution to obtain a nanofluid reinforcing filler-resin dispersion solution; the nano-fluid reinforcing filler is the MXene@SiC solvent-free nano-fluid disclosed in the technical scheme or the MXene@SiC solvent-free nano-fluid prepared by the preparation method disclosed in the technical scheme;
and (3) dipping the surface modified basalt fiber/polytetrafluoroethylene blended fabric into the nano fluid reinforced filler-resin dispersion solution, drying, and repeating the dipping-drying process to obtain the composite lubricating material.
The invention provides a composite lubricating material prepared by the preparation method, which comprises basalt fiber/polytetrafluoroethylene blended fabric, and nanofluid reinforcing filler and resin loaded on the surface and the inside of the basalt fiber/polytetrafluoroethylene blended fabric.
Preferably, the basalt fiber/polytetrafluoroethylene blended fabric accounts for 70-80 wt% of the composite lubricating material.
The invention provides an MXene@SiC solvent-free nanofluid, which comprises an MXene@SiC hybrid, an inner canopy covalently grafted to the surface of the MXene@SiC hybrid, and an outer canopy covalently grafted to the surface of the inner canopy; the MXene@SiC hybrid comprises an MXene nano sheet and a SiC nano wire loaded on the MXene nano sheet; the inner canopy is an epoxy silane coupling agent; the outer canopy is polyetheramine. The MXene@SiC solvent-free nanofluid provided by the invention comprises an MXene@SiC hybrid, so that excellent antifriction lubricating property of the MXene nanosheets and outstanding bearing capacity of the SiC nanowires can be fully exerted, and when the MXene@SiC solvent-free nanofluid is used as a nano reinforcing material, the MXene nanosheets and the SiC nanowires can cooperatively promote the tribological property of the fabric composite material; meanwhile, the MXene@SiC solvent-free nanofluid provided by the invention comprises the inner crown layer and the outer crown layer which are covalently grafted, wherein an organic shell layer formed by the inner crown layer and the outer crown layer plays a role of a solvent of the MXene@SiC solvent-free nanofluid, and provides a flowing medium for the MXene@SiC hybrid, so that the MXene@SiC solvent-free nanofluid has the characteristics of both organic and inorganic materials; the dispersion performance of the MXene@SiC hybrid in the fabric composite material is greatly promoted, the synergistic enhancement effect between the MXene and the SiC is fully exerted, and the average wear rate and the friction coefficient of the fabric composite material are remarkably improved.
The invention provides a preparation method of a composite lubricating material, which comprises the following steps: dipping basalt fiber/polytetrafluoroethylene blended fabric into mixed solution of tannic acid and polyethyleneimine for surface modification to obtain surface modified basalt fiber/polytetrafluoroethylene blended fabric; mixing the nanofluid reinforcing filler with the resin solution to obtain a nanofluid reinforcing filler-resin dispersion solution; the nano-fluid reinforcing filler is the MXene@SiC solvent-free nano-fluid disclosed in the technical scheme or the MXene@SiC solvent-free nano-fluid prepared by the preparation method disclosed in the technical scheme; and (3) dipping the surface modified basalt fiber/polytetrafluoroethylene blended fabric into the nano fluid reinforced filler-resin dispersion solution, drying, and repeating the dipping-drying process to obtain the composite lubricating material. According to the preparation method provided by the invention, the mixed solution of tannic acid and polyethyleneimine is adopted to modify the surface of the Baslt/PTFE blended fabric, so that abundant active reactive groups (hydroxyl and amino) on the surface of the Baslt/PTFE blended fabric are endowed, the interface bonding performance between the Baslt/PTFE blended fabric and the nano-fluid reinforced filler and resin matrix is improved, the fabric fibers are prevented from being pulled out and cut off in the friction process, and the wear resistance and the lubricating performance of the fabric composite material are further effectively improved.
The invention provides a composite lubricating material prepared by the preparation method of the technical scheme, which comprises basalt fiber/polytetrafluoroethylene blended fabric, and nano-fluid reinforcing filler and resin loaded on the surface and the inside of the basalt fiber/polytetrafluoroethylene blended fabric. In the invention, the nano-fluid reinforcing filler is the MXene@SiC solvent-free nano-fluid prepared by the technical scheme or the preparation method. In the friction process of the composite lubricating material provided by the invention, the two-dimensional MXene nano-sheet can promote the friction transfer of the fabric lining material and promote the binding force between the transfer film and the metal pair. Meanwhile, the MXene nano-sheet can enhance the toughness of the resin matrix, improve the stress transmission efficiency in the fabric lining material and inhibit fatigue cracks of the fabric lining material caused by stress concentration. In addition, the SiC nanowires loaded on the surface of the layered MXene nano-sheet can improve the bearing capacity of the fabric lining material, and the SiC nanowires and the MXene nano-sheet can jointly realize the effective improvement of the wear resistance and the lubricating performance of the fabric lining material. In addition, in the invention, the MXene@SiC hybrid is uniformly dispersed in the fabric composite material in the form of nano fluid, so that the dispersibility of the MXene@SiC hybrid in the resin and fabric composite material is effectively improved, and the synergistic enhancement of the MXene nano sheet and the SiC nano wire on the tribological performance of the composite material of the Baslt/PTFE blended fabric can be fully exerted. The results of the examples show that the average wear rate and the friction coefficient of the composite lubricating material provided by the invention are respectively 1.96 multiplied by 10 -14 m 3 (Nm) -1 And 0.0446, achieving abrasion resistance and lubricity of the Baslt/PTFE fabric linerThe effect is improved.
Drawings
FIG. 1 is a schematic representation of the reaction of MXene@SiC hybrids with GPTES (gamma- (2, 3-glycidoxy) propyltrimethoxysilane) and polyetheramine M2070 in example 2;
FIG. 2 is a graph of wear rate and coefficient of friction for the Baslt/PTFE fabric composites prepared in application example 1 and comparative application examples 1, 2, 3;
FIG. 3 is the raw material Ti in example 2 3 AlC 2 Scanning electron microscope pictures of powder, MXene nano-sheets, modified SiC nano-wires and MXene@SiC hybrids;
FIG. 4 is a transmission electron micrograph of the MXene nanoplatelets, modified SiC nanowires, MXene@SiC hybrids of example 2;
FIG. 5 is a schematic illustration of an MXene nanoplatelet (Ti 3 C 2 T X ) XRD spectra, infrared spectra, raman spectra and Zeta potential maps of modified SiC nanowires and MXene@SiC hybrids;
FIG. 6 is a graph showing the transmission profile, IR spectrum, viscosity and dispersibility in phenolic resin solution for the MXene@SiC solvent-free nanofluid prepared in example 3;
FIG. 7 is an infrared spectrum of the surface morphology of PTFE fibers and Baslt fibers before and after modification;
FIG. 8 is a scanning electron micrograph of the wear surface of the fabric composite lubricant prepared in comparative application example 1 and application example 4.
Detailed Description
The invention provides an MXene@SiC solvent-free nanofluid, which comprises an MXene@SiC hybrid, an inner canopy covalently grafted to the surface of the MXene@SiC hybrid, and an outer canopy covalently grafted to the surface of the inner canopy; the MXene@SiC hybrid comprises an MXene nano sheet and a SiC nano wire loaded on the MXene nano sheet; the inner canopy is an epoxy silane coupling agent; the outer canopy is polyetheramine.
In the present invention, all preparation materials/components are commercially available products well known to those skilled in the art unless specified otherwise.
The MXene@SiC solvent-free nanofluid provided by the invention comprises an MXene@SiC hybrid; the MXene@SiC hybrid comprises an MXene nano-sheet and a SiC nano-wire loaded on the MXene nano-sheet.
In the present invention, the diameter of the SiC nanowire is preferably 200 to 500nm, more preferably 250 to 450nm.
In the present invention, the length of the SiC nanowire is preferably 5 to 20 μm, more preferably 6 to 18 μm.
In the invention, the number of layers of the MXene nano-sheet is preferably less than or equal to 5.
In the invention, the preparation method of the MXene@SiC hybrid preferably comprises the following steps:
mixing a SiC nanowire, a cationic surfactant and water, and modifying the SiC nanowire by the cationic surfactant to obtain a modified SiC nanowire;
And mixing the MXene nano-sheet, the modified SiC nano-wire and water, and performing electrostatic self-assembly reaction on the surface of the MXene nano-sheet to obtain the MXene@SiC hybrid.
According to the invention, siC nanowires, a cationic surfactant and water are mixed (hereinafter referred to as first mixing), and the SiC nanowires are subjected to cationic surfactant modification to obtain modified SiC nanowires.
In the present invention, the cationic surfactant preferably includes one or more of polydiallyl dimethyl ammonium chloride, octadecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium bromide, more preferably polydiallyl dimethyl ammonium chloride, octadecyl trimethyl ammonium chloride or hexadecyl trimethyl ammonium bromide.
In the present invention, the mass ratio of the cationic surfactant to the SiC nanowire is preferably (0.5 to 1): 1, and more preferably (0.55 to 0.8): 1.
In the present invention, the first mixing preferably includes: dissolving the cationic surfactant in water to form a cationic surfactant solution; mixing the SiC nanowires and the cationic surfactant solution. In the present invention, the mass percentage of the cationic surfactant solution is preferably 1wt%. In the present invention, the mixing of the SiC nanowire and the cationic surfactant solution is preferably performed under ultrasound-assisted conditions, and the time of the ultrasound-assisted mixing is preferably 0.5h.
In the present invention, the temperature at which the cationic surfactant is modified is preferably room temperature.
In the present invention, the incubation time for the cationic surfactant modification is preferably 10 to 15 hours, more preferably 12 hours.
In the present invention, the cationic surfactant modification is preferably performed under stirring conditions, and the present invention does not require any special requirement for the specific implementation of the stirring.
In the invention, the cationic surfactant is modified to obtain a modified liquid, and the modified SiC nanowire is preferably obtained by carrying out aftertreatment on the modified liquid. In the present invention, the post-treatment preferably includes: sequentially performing solid-liquid separation, water washing and drying. In the present invention, the solid-liquid separation is particularly preferably filtration, and the present invention is not particularly limited to the specific embodiment of the filtration. In the present invention, the drying is particularly preferably freeze-drying.
In the present invention, the cationic surfactant modification imparts a positive charge to the SiC nanowire surface.
After the modified SiC nano wire is obtained, the MXene nano sheet, the modified SiC nano wire and water are mixed (hereinafter referred to as second mixing), and electrostatic self-assembly reaction is carried out on the surface of the MXene nano sheet, so that the MXene@SiC hybrid is obtained.
In the present invention, the MXene nanoplatelets preferably comprise Ti 3 AlC 2 -MXene。
In the present invention, the preparation method of the MXene nanoplatelets preferably includes the following steps:
ti is mixed with 3 AlC 2 Mixing the powder with hydrofluoric acid, and performing surface etching to obtain an etching product;
in a protective gas atmosphere, sequentially stripping and centrifugally separating the etching product in ice water, and taking supernatant as a dispersion liquid of the MXene nano-sheets;
and freeze-drying the dispersion liquid of the MXene nano-sheets to obtain the MXene nano-sheets.
The invention uses Ti 3 AlC 2 Mixing the powder with hydrofluoric acid, and performing surface etching to obtain an etching product.
In the present invention, the hydrofluoric acid is preferably a hydrochloric acid solution of lithium fluoride (LiF). In the present invention, the molar concentration of the hydrochloric acid solution is preferably 9mol/L. In the present invention, the mass concentration of lithium fluoride in the hydrochloric acid solution of lithium fluoride is preferably 0.02 to 0.05g/mL, more preferably 0.03 to 0.04g/mL.
In the present invention, the Ti is 3 AlC 2 In the mixed solution formed by mixing the powder and hydrofluoric acid, the Ti is 3 AlC 2 The concentration of the powder is preferably 0.03 to 0.08g/mL, more preferably 0.03 to 0.05g/mL.
In the present invention, the temperature of the surface etching is preferably 30 to 50 ℃, more preferably 35 to 45 ℃.
In the present invention, the holding time for the surface etching is preferably 30 to 50 hours, more preferably 24 to 36 hours.
In the invention, the surface etching is preferably performed under stirring conditions, and the invention has no special requirements on the specific implementation process of the stirring.
In the invention, the etching reaction liquid is obtained after the surface is etched, and the etching reaction liquid is preferably subjected to post-treatment to obtain the etching product. In the present invention, the post-treatment preferably includes: sequentially performing solid-liquid separation, water washing and drying. In the present invention, the solid-liquid separation is preferably filtration, and the present invention has no special requirements for the specific implementation of the filtration, washing with water and drying.
After an etching product is obtained, the invention sequentially peels off and centrifugally separates the etching product in ice water in a protective gas atmosphere, and the supernatant is taken to obtain a dispersion liquid of the MXene nano-sheets.
The present invention preferably removes the precipitate by centrifugation, and the supernatant contains few layers of MXene nanoplatelets.
In the present invention, the shielding gas atmosphere is preferably an argon atmosphere.
In the present invention, the peeling is preferably performed under ultrasound-assisted conditions. In the present invention, the ultrasonic power of ultrasonic peeling is preferably 90 to 100W, more preferably 92 to 97W. In the present invention, the time of the ultrasonic peeling is preferably 1h.
In the present invention, the rotational speed of the centrifugal separation is preferably 3000 to 4000r/min, more preferably 3500r/min.
In the present invention, the time of the centrifugation is preferably 1h.
After the dispersing liquid of the MXene nano-sheets is obtained, the dispersing liquid of the MXene nano-sheets is freeze-dried to obtain the MXene nano-sheets.
The freeze-drying process is not particularly limited, and may be performed according to a process well known in the art.
In the invention, the surface of the generated MXene nano-sheet contains a large number of hydroxyl and carboxyl functional groups to carry negative charges.
In the invention, the mass ratio of the MXene nano-sheets to the modified SiC nano-wires is (0.5-1), more preferably (0.55-0.8), and is (0.55-0.8).
In the present invention, the concentration of the MXene nanoplatelets in the mixed solution formed by mixing the MXene nanoplatelets, the modified SiC nanowires and water is preferably 0.001 to 0.004g/mL.
In the present invention, the second mixture is preferably: and mixing the MXene nano-sheets with water to obtain MXene nano-sheet dispersion liquid, and mixing the obtained MXene nano-sheet dispersion liquid with the modified SiC nano-wires. In the present invention, the mixing of the MXene nanoplatelets and water is preferably performed under ultrasound-assisted conditions. The process of ultrasonic dispersion is not particularly limited, and may be performed according to a process well known in the art.
In the present invention, the temperature of the electrostatic self-assembly reaction is preferably room temperature.
In the present invention, the holding time of the electrostatic self-assembly reaction is preferably 8 to 20 hours, more preferably 12 to 16 hours.
In the present invention, the electrostatic self-assembly reaction is preferably carried out under stirring, and the stirring rate is not particularly limited in the present invention, and may be carried out according to a process well known in the art.
In the invention, in the electrostatic self-assembly reaction process, the MXene nano-sheets with positive charges on the surface and negative charges on the surface of the modified SiC nano-wire are self-assembled together through static electricity.
In the invention, the assembling reaction liquid is obtained after the electrostatic self-assembling reaction, and the MXene@SiC hybrid is obtained by preferably carrying out post-treatment on the assembling reaction liquid. In the present invention, the post-treatment preferably includes: sequentially carrying out the following steps: solid-liquid separation, water washing and freeze drying. In the present invention, the solid-liquid separation is preferably filtration, and the filtration, washing and freeze-drying processes are not particularly limited, and may be performed according to processes well known in the art.
The invention provides a preparation method of MXene@SiC solvent-free nanofluid, which comprises the following steps of:
Mixing an MXene@SiC hybrid, an epoxy silane coupling agent and an organic solvent to perform covalent grafting reaction, and covalently grafting an inner canopy on the surface of the MXene@SiC hybrid to obtain a dispersion liquid of the hybrid grafted with the inner canopy;
and mixing the dispersion liquid of the hybrid grafted with the inner canopy with polyetheramine to perform an addition reaction, and covalently grafting an outer canopy on the surface of the inner canopy to obtain the MXene@SiC solvent-free nanofluid.
The invention mixes the MXene@SiC hybrid, the epoxy silane coupling agent and the organic solvent to generate covalent grafting reaction, and covalently grafts an inner canopy on the surface of the MXene@SiC hybrid to obtain a dispersion liquid of the hybrid grafted with the inner canopy.
In the present invention, the epoxysilane coupling agent particularly preferably includes one or more of gamma- (2, 3-glycidoxy) propyltrimethoxysilane, gamma- (2, 3-glycidoxy) propyltriethoxysilane, and gamma- (2, 3-glycidoxy) propylmethyldiethoxysilane.
In the present invention, the organic solvent is particularly preferably methanol.
In the present invention, the mass ratio of the MXene@SiC hybrid to the epoxy silane coupling agent is preferably 1 (1-2), more preferably 1 (1.1-1.9).
In the invention, in the mixed solution formed by mixing the MXene@SiC hybrid, the epoxy silane coupling agent and the organic solvent, the concentration of the MXene@SiC hybrid is preferably 0.01-0.02 g/mL, more preferably 0.012-0.017 g/mL.
In the present invention, the third mixing preferably includes: dispersing the MXene@SiC hybrid into an organic solvent to form a MXene@SiC hybrid dispersion; and dropwise adding the epoxy silane coupling agent into the MXene@SiC hybrid dispersion liquid. In the present invention, the mxene@sic hybrid is preferably dispersed in an organic solvent under ultrasound-assisted conditions. In the present invention, the dropping speed of the epoxy silane coupling agent is preferably 0.1mL/min.
In the present invention, the covalent grafting reaction is preferably carried out under reflux stirring. The process of the reflux stirring is not particularly limited, and may be performed according to a process well known in the art.
In the present invention, the temperature of the covalent grafting reaction is preferably 50 to 80 ℃, more preferably 50 to 60 ℃.
In the present invention, the incubation time for the covalent grafting reaction is 6 to 12 hours, more preferably 8 to 10 hours.
In the invention, after the covalent grafting of the epoxy silane coupling agent on the surface of the MXene@SiC hybrid body is completed, the epoxy silane coupling agent is directly subjected to subsequent reaction with polyetheramine in a solution obtained by the reaction without any treatment, and the MXene@SiC solvent-free nanofluid is obtained.
After the dispersion liquid of the hybrid of the grafted inner canopy is obtained, the dispersion liquid of the hybrid of the grafted inner canopy is mixed with polyetheramine to carry out an addition reaction, and an outer canopy is covalently grafted on the surface of the inner canopy, so that the MXene@SiC solvent-free nanofluid is obtained.
In the present invention, the polyetheramine is particularly preferably polyetheramine M2070.
In the present invention, the molar ratio of the epoxy silane coupling agent to the polyether amine is preferably 1 (1 to 1.2).
In the present invention, the addition reaction is preferably an epoxy ring-opening addition reaction.
In the present invention, the addition reaction is preferably carried out under reflux stirring. The process of the reflux stirring is not particularly limited, and may be performed according to a process well known in the art.
In the present invention, the temperature of the addition reaction is preferably 50 to 80 ℃, more preferably 50 to 60 ℃.
In the present invention, the holding time for the addition reaction is preferably 12 to 24 hours, more preferably 12 to 16 hours.
In the invention, the addition reaction liquid is obtained after the addition reaction, and the MXene@SiC solvent-free nanofluid is obtained by preferably carrying out aftertreatment on the addition reaction liquid. In the present invention, the post-treatment preferably includes dialysis purification, and drying. In the present invention, the dialysis purification is preferably performed in water, which is preferably deionized water. The invention removes unreacted epoxy silane coupling agent and polyether amine in the addition reaction liquid through dialysis and purification. After the dialysis is finished, the solution after the dialysis is directly transferred to an oven and dried until the quality is not changed.
In the invention, the alkoxy of the epoxy silane coupling agent firstly carries out covalent grafting reaction with the hydroxyl on the surface of the MXene@SiC hybrid, and then the epoxy group of the silane coupling agent is subjected to ring opening addition reaction with the polyetheramine to form the MXene@SiC solvent-free nanofluid.
The invention provides an application of the MXene@SiC solvent-free nanofluid prepared by the technical scheme or the preparation method of the MXene@SiC solvent-free nanofluid as a nano reinforcing filler in a fabric composite lubricating material. In the invention, the composite lubricating material is preferably a Baslt/PTFE blended fabric composite material.
The method of the present invention is not particularly limited, and may be carried out by methods well known in the art.
The invention provides a preparation method of a composite lubricating material, which comprises the following steps:
dipping basalt fiber/polytetrafluoroethylene blended fabric into mixed solution of tannic acid and polyethyleneimine for surface modification to obtain surface modified basalt fiber/polytetrafluoroethylene blended fabric;
mixing the nanofluid reinforcing filler with the resin solution to obtain a nanofluid reinforcing filler-resin dispersion solution; the nano-fluid reinforcing filler is the MXene@SiC solvent-free nano-fluid disclosed in the technical scheme or the MXene@SiC solvent-free nano-fluid prepared by the preparation method disclosed in the technical scheme;
And (3) dipping the surface modified basalt fiber/polytetrafluoroethylene blended fabric into the nano fluid reinforced filler-resin dispersion solution, drying, and repeating the dipping-drying process to obtain the composite lubricating material.
According to the invention, the basalt fiber/polytetrafluoroethylene blended fabric is immersed in a mixed solution of tannic acid and polyethyleneimine for surface modification, so that the basalt fiber/polytetrafluoroethylene blended fabric with the surface modified is obtained.
In the embodiment of the invention, the Basalt/PTFE blended fabric is preferably woven by adopting polytetrafluoroethylene fibers as warp yarns and Basalt fibers as weft yarns according to the warp density of 350-400 pieces/10 cm and the weft density of 300-350 pieces/10 cm by plain weaving.
In the present invention, the mixed solution of tannic acid and polyethyleneimine is particularly preferably a Tris-HCl buffered aqueous solution of tannic acid and polyethyleneimine.
In the present invention, the Tris-HCl buffer aqueous solution has a pH of 8.5 and a Tris concentration of preferably 10mM.
In the present invention, the concentration of tannic acid in the mixed solution of tannic acid and polyethyleneimine is preferably 1 to 3mg/mL.
In the present invention, the mass ratio of tannic acid to polyethyleneimine is preferably 1:1.
In the present invention, the ratio of the mixed solution of the basal/PTFE blend fabric and tannic acid and polyethyleneimine is preferably (4 cm×8 cm): (100-150) mL.
In the present invention, the temperature of the surface modification is preferably room temperature.
In the present invention, the holding time for the surface modification is preferably 12 to 24 hours.
In the present invention, the surface modification is preferably performed under stirring.
In the invention, after the surface modification, the impregnated Baslt/PTFE blended fabric is preferably washed with water and then dried, so that the surface modified Baslt/PTFE blended fabric is obtained. In the invention, the washing is preferably repeated washing by deionized water so as to remove unreacted substances on the surface of the blended fabric. In the present invention, the drying is preferably vacuum drying.
In the invention, the surface of the Basalt/PTFE blend fabric fiber is smooth and lacks effective reactive groups, so that the effective transfer of stress of the fabric pad in the friction process is limited.
The invention mixes the nano fluid reinforcing filler with the resin solution to obtain nano fluid reinforcing filler-resin dispersion solution; the nano-fluid reinforcing filler is the MXene@SiC solvent-free nano-fluid prepared by the technical scheme or the preparation method.
In the present invention, the resin solution is preferably a phenolic resin solution.
In the present invention, the dispersion solvent of the phenolic resin solution is preferably ethanol, acetone, and ethyl acetate; in the invention, the volume ratio of the ethanol, the acetone and the ethyl acetate is preferably 1:1:1; the ratio of the phenolic resin to the dispersing solvent in the phenolic resin solution is preferably 1g (5-10 mL), more preferably 1 g/7 mL. The preparation process of the phenolic resin solution is not particularly limited, and the phenolic resin solution can be prepared according to the process well known in the art.
In the invention, the nano-fluid reinforcing filler is specifically the MXene@SiC solvent-free nano-fluid according to the technical scheme.
In the present invention, the mass ratio of the nanofluid reinforcing filler to the phenolic resin in the resin solution is preferably (0.01 to 0.06): 1, more preferably (0.03 to 0.05): 1.
The process of mixing the nanofluid reinforcing filler with the resin solution is not particularly limited in the present invention, and may be mixed according to a process well known in the art.
After the surface modified Basalt/PTFE blended fabric and the nano fluid reinforced filler-resin dispersion solution are obtained, the surface modified blended fabric is immersed in the nano fluid reinforced filler-resin dispersion solution and then dried, and the immersing-drying process is repeated, so that the composite lubricating material is obtained.
The process of "dipping-drying" is preferably repeated until the mass percentage of the composite lubricating material is preferably 70 to 80wt%, more preferably 70 to 73wt%.
The specific conditions for each impregnation and drying are not particularly limited in the present invention, and the weight gain requirements can be achieved according to processes well known in the art. In an embodiment of the invention, the drying is performed in an oven, the temperature of the drying preferably being 50 ℃.
In the invention, the prepreg of the composite material is obtained by drying the preparation method in the technical scheme, and is preferably used after being adhered to the surface of a metal substrate by using resin as an adhesive and being cured.
In the present invention, the pressure of the curing is preferably 0.2 to 0.4MPa, more preferably 0.3MPa.
In the present invention, the curing temperature is preferably 180 ℃, and the curing incubation time is preferably 140min.
In the present invention, the curing serves on the one hand to bond the composite prepreg with the metal substrate and on the other hand to further cure and crosslink the composite prepreg under high temperature conditions.
The invention provides a composite lubricating material prepared by the preparation method of the technical scheme, which comprises basalt fiber/polytetrafluoroethylene blended fabric, and nanofluid reinforced filler and resin loaded on the surface and the inside of the basalt fiber/polytetrafluoroethylene blended fabric.
In the invention, the basalt fiber/polytetrafluoroethylene blended fabric accounts for preferably 70-80 wt% of the composite lubricating material, and more preferably 70-73 wt%.
The MXene@SiC solvent-free nanofluid provided by the invention is added into the composite material of the Baslt/PTFE blended fabric, and the tribological performance of the composite material of the fabric is synergistically improved by exerting the excellent antifriction lubricating performance of the MXene nano-sheet and the outstanding bearing capacity of the SiC nano-wire. The organic long chain molecules of the outer layer enable the MXene@SiC hybrid to exist in a fluid form, so that the dispersion performance of the hybrid in the fabric composite material is greatly promoted, and the synergistic enhancement effect between the MXene and the SiC is fully exerted. Meanwhile, the mixed solution of tannic acid and polyethyleneimine is adopted to modify the surface of the Baslt/PTFE blended fabric, so that abundant active reactive groups are endowed to the surface of the blended fabric, the interface bonding performance between the blended fabric and a resin matrix is improved, and the tribological performance of the composite material of the Baslt/PTFE blended fabric is further improved.
In an embodiment of the present invention, for convenience of testing, the composite material obtained by repeating the dipping-drying process is stuck on the surface of the metal substrate, and is cured. The metal substrate is not particularly limited in the present invention, and corresponding substrates well known in the art may be used; more preferably 9Cr18Mo, 9Cr18MoV, 9Cr18, 4Cr13 or 17-4PH.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples, polytetrafluoroethylene fibers are used as warp yarns and Basalt fibers are used as weft yarns, the warp density is 400 pieces/10 cm, the weft density is 300 pieces/10 cm, and the Basalt fiber-polytetrafluoroethylene fiber blended fabric is obtained by plain weaving.
Example 1
3g of Ti 3 AlC 2 Adding the powder into 100mL of lithium fluoride (LiF, 3 g) hydrochloric acid (9 mol/L) solution, stirring and reacting for 36h at 35 ℃, filtering, washing and drying to obtain an etched product, ultrasonically reacting the obtained etched product in ice water which is filled with argon atmosphere for 1h, centrifuging for 1h at 3500r/min to remove a precipitation part, obtaining the MXene nano-sheet dispersion liquid on the upper layer, and freeze-drying to obtain the MXene nano-sheet.
0.5g of SiC nanowires is added to 50mL of an aqueous solution of octadecyl trimethyl ammonium chloride (1 wt%), and the solution is uniformly mixed by ultrasonic dispersion for 0.5 h. And then, stirring the mixed solution at room temperature for reaction for 12 hours, and sequentially centrifuging, washing and freeze-drying the obtained precipitate product to obtain the cationic surfactant modified SiC nanowire.
Dispersing the 0.2g MXene nano-sheet and the 0.2g modified SiC nano-wire in 100mL water solution, uniformly dispersing by ultrasonic, stirring at room temperature for reaction for 12 hours, and filtering, washing and freeze-drying the obtained product after the electrostatic self-assembly reaction is completed to obtain the MXene@SiC hybrid.
Adding 1g of MXene@SiC hybrid into 100mL of methanol solution, uniformly dispersing by ultrasonic, then dropwise adding 1g of gamma- (2, 3-glycidoxy) propyl trimethoxy silane into the mixed solution, and carrying out reflux stirring reaction for 10h at 50 ℃ to complete covalent grafting of a silane coupling agent on the surface of the hybrid; after the reaction is finished, 10g of polyether amine M2070 is continuously added into the mixed solution, reflux stirring reaction is continuously carried out for 12 hours at 50 ℃ to finish the grafting of polyether amine, finally the obtained reaction product solution is dialyzed in deionized water, and the obtained product is dried to obtain the MXene@SiC solvent-free nanofluid.
Example 2
5g of Ti 3 AlC 2 Adding the powder into 100mL of lithium fluoride (LiF, 4 g) hydrochloric acid (9 mol/L) solution, stirring and reacting for 36h at 35 ℃, filtering, washing and drying to obtain an etched product, ultrasonically reacting the obtained etched product in ice water which is filled with argon atmosphere for 1h, centrifuging for 1h at 3500r/min to remove a precipitation part, obtaining the MXene nano-sheet dispersion liquid on the upper layer, and freeze-drying to obtain the MXene nano-sheet.
0.5g of SiC nanowires is added to 50mL of an aqueous solution of polydiallyl dimethyl ammonium chloride (1 wt%), and the solution is uniformly mixed by ultrasonic dispersion for 0.5 h. And then, stirring the mixed solution at room temperature for reaction for 12 hours, and sequentially centrifuging, washing and freeze-drying the obtained precipitate product to obtain the cationic surfactant modified SiC nanowire.
Dispersing the 0.2g MXene nano-sheet and the 0.2g modified SiC nano-wire in 100mL water solution, uniformly dispersing by ultrasonic, stirring at room temperature for reaction for 12 hours, and filtering, washing and freeze-drying the obtained product after the electrostatic self-assembly reaction is completed to obtain the MXene@SiC hybrid.
Adding 1g of MXene@SiC hybrid into 100mL of methanol solution, uniformly dispersing by ultrasonic, then dropwise adding 1g of gamma- (2, 3-glycidoxy) propyl trimethoxy silane into the mixed solution, and carrying out reflux stirring reaction for 10h at 50 ℃ to complete covalent grafting of a silane coupling agent on the surface of the hybrid; after the reaction is finished, 10g of polyether amine M2070 is continuously added into the mixed solution, reflux stirring reaction is continuously carried out for 12 hours at 50 ℃ to finish the grafting of polyether amine, finally the obtained reaction product solution is dialyzed in deionized water, and the obtained product is dried to obtain the MXene@SiC solvent-free nanofluid.
Example 3
5g of Ti 3 AlC 2 Adding the powder into 100mL of hydrochloric acid (9 mol/L) solution of lithium fluoride (LiF, 4 g), stirring at 35 ℃ for reaction for 36h, filtering, washing and drying to obtain an etched product, performing ultrasonic reaction on the etched product in ice water with argon atmosphere for 1h, and performing 3500r/minRemoving the precipitate part after 1h centrifugation, and obtaining the MXene nano-sheet dispersion liquid on the upper layer, and obtaining the MXene nano-sheet after freeze drying.
0.5g of SiC nanowires is added to 50mL of an aqueous solution of polydiallyl dimethyl ammonium chloride (1 wt%), and the solution is uniformly mixed by ultrasonic dispersion for 0.5 h. And then, stirring the mixed solution at room temperature for reaction for 12 hours, and sequentially centrifuging, washing and freeze-drying the obtained precipitate product to obtain the cationic surfactant modified SiC nanowire.
Dispersing the 0.2g MXene nano-sheet and the 0.2g modified SiC nano-wire in 100mL water solution, uniformly dispersing by ultrasonic, stirring at room temperature for reaction for 12 hours, and filtering, washing and freeze-drying the obtained product after the electrostatic self-assembly reaction is completed to obtain the MXene@SiC hybrid.
Adding 1g of MXene@SiC hybrid into 100mL of methanol solution, uniformly dispersing by ultrasonic, then dropwise adding 1.5g of gamma- (2, 3-glycidoxy) propyl triethoxysilane into the mixed solution, and carrying out reflux stirring reaction for 10h at 50 ℃ to complete covalent grafting of a silane coupling agent on the surface of the hybrid; after the reaction is finished, adding 15g of polyether amine M2070 into the mixed solution, continuously refluxing and stirring at 50 ℃ for reaction for 12 hours to complete the grafting of polyether amine, dialyzing the obtained reaction product solution in deionized water, and drying the obtained product to obtain the MXene@SiC solvent-free nanofluid.
Example 4
5g of Ti 3 AlC 2 Adding the powder into 100mL of lithium fluoride (LiF, 4 g) hydrochloric acid (9 mol/L) solution, stirring at 45 ℃ for reaction for 24 hours, filtering, washing and drying to obtain an etched product, ultrasonically reacting the obtained etched product in ice water which is filled with argon atmosphere for 1 hour, centrifuging for 1 hour at 3500r/min to remove a precipitation part, obtaining the MXene nano-sheet dispersion liquid on the upper layer, and freeze-drying to obtain the MXene nano-sheet.
0.4g of SiC nanowires is added to 50mL of an aqueous solution of polydiallyl dimethyl ammonium chloride (1 wt%), and the solution is uniformly mixed by ultrasonic dispersion for 0.5 h. And then, stirring the mixed solution at room temperature for reaction for 12 hours, and sequentially centrifuging, washing and freeze-drying the obtained precipitate product to obtain the cationic surfactant modified SiC nanowire.
Dispersing the 0.3g MXene nano-sheet and the 0.2g modified SiC nano-wire in 100mL water solution, uniformly dispersing by ultrasonic, stirring at room temperature for reaction for 12 hours, and filtering, washing and freeze-drying the obtained product after the electrostatic self-assembly reaction is completed to obtain the MXene@SiC hybrid.
Adding 1g of MXene@SiC hybrid into 100mL of methanol solution, uniformly dispersing by ultrasonic, then dropwise adding 1g of gamma- (2, 3-glycidoxy) propyl trimethoxy silane into the mixed solution, and carrying out reflux stirring reaction for 10h at 50 ℃ to complete covalent grafting of a silane coupling agent on the surface of the hybrid; after the reaction is finished, 10g of polyether amine M2070 is continuously added into the mixed solution, reflux stirring reaction is continuously carried out for 12 hours at 50 ℃ to finish the grafting of polyether amine, finally the obtained reaction product solution is dialyzed in deionized water, and the obtained product is dried to obtain the MXene@SiC solvent-free nanofluid.
In the following application examples, the dispersion solvent of the phenolic resin solution is a mixture of ethanol, acetone and ethyl acetate, wherein the volume ratio of the ethanol to the acetone to the ethyl acetate is 1:1:1; the phenolic resin solution had a phenolic resin to dispersing solvent dosage ratio of 1g:7mL.
Application example 1
0.2g of tannic acid and 0.2g of polyethyleneimine were dissolved in 100mL of Tris-HCl buffer aqueous solution (pH 8.5, 10 mM), followed by immersing (4 cm. Times.8 cm) of the Basalt/PTFE blend fabric in the above aqueous solution, and the reaction was slowly stirred at room temperature for 12 hours. And after the reaction is finished, taking out the blended fabric, repeatedly flushing the blended fabric with deionized water to remove unreacted substances on the surface of the fabric, and then drying the fabric in vacuum to obtain the surface-modified Basalt/PTFE blended fabric.
Adding 0.3g of MXene@SiC solvent-free nanofluid prepared in example 1 into a phenolic resin solution (10 g of phenolic resin, 70mL of dispersion solvent), then dipping the modified Basalt/PTFE blended fabric into the obtained phenolic resin mixed solution, drying in a 50 ℃ oven, and repeating the dipping-drying steps until the mass fraction of the Basalt/PTFE blended fabric in the Basalt/PTFE blended fabric composite material is reduced to 73wt%, so as to obtain the MXene@SiC solvent-free nanofluid reinforced Basalt/PTFE blended fabric composite material; and (3) adhering the obtained composite material on the surface of a 9Cr18Mo metal substrate by using phenolic resin, and curing and reacting for 140min under the conditions of 0.3MPa and 180 ℃ to obtain the MXene@SiC solvent-free nano-fluid reinforced Basalt/PTFE blended fabric composite material lining.
Application example 2
0.2g of tannic acid and 0.2g of polyethyleneimine were dissolved in 100mL of Tris-HCl buffer aqueous solution (pH 8.5, 10 mM), followed by immersing (4 cm. Times.8 cm) of the Basalt/PTFE blend fabric in the above aqueous solution, and the reaction was slowly stirred at room temperature for 12 hours. And after the reaction is finished, taking out the blended fabric, repeatedly flushing the blended fabric with deionized water to remove unreacted substances on the surface of the fabric, and then drying the fabric in vacuum to obtain the surface-modified Basalt/PTFE blended fabric.
Adding 0.3g of MXene@SiC solvent-free nanofluid prepared in example 2 into a phenolic resin solution (10 g of phenolic resin, 70mL of dispersion solvent), then dipping the modified Basalt/PTFE blended fabric into the obtained phenolic resin mixed solution, drying in a 50 ℃ oven, and repeating the dipping-drying steps until the mass fraction of the Basalt/PTFE blended fabric in the Basalt/PTFE blended fabric composite material is reduced to 73wt%, so as to obtain the MXene@SiC solvent-free nanofluid reinforced Basalt/PTFE blended fabric composite material; and (3) adhering the obtained composite material on the surface of a 9Cr18Mo metal substrate by using phenolic resin, and curing and reacting for 140min under the conditions of 0.3MPa and 180 ℃ to obtain the MXene@SiC solvent-free nano-fluid reinforced Basalt/PTFE blended fabric composite material lining.
Application example 3
0.2g of tannic acid and 0.2g of polyethyleneimine were dissolved in 100mL of Tris-HCl buffer aqueous solution (pH 8.5, 10 mM), followed by immersing (4 cm. Times.8 cm) of the Basalt/PTFE blend fabric in the above aqueous solution, and the reaction was slowly stirred at room temperature for 12 hours. And after the reaction is finished, taking out the blended fabric, repeatedly flushing the blended fabric with deionized water to remove unreacted substances on the surface of the fabric, and then drying the fabric in vacuum to obtain the surface-modified Basalt/PTFE blended fabric.
Adding 0.3g of MXene@SiC solvent-free nanofluid prepared in example 3 into a phenolic resin solution (10 g of phenolic resin, 70mL of dispersion solvent), then dipping the modified Basalt/PTFE blended fabric into the obtained phenolic resin mixed solution, drying in a 50 ℃ oven, and repeating the dipping-drying steps until the mass fraction of the Basalt/PTFE blended fabric in the Basalt/PTFE blended fabric composite material is reduced to 73%, so as to obtain the MXene@SiC solvent-free nanofluid reinforced Basalt/PTFE blended fabric composite material; and (3) adhering the obtained composite material on the surface of a 9Cr18Mo metal substrate by using phenolic resin, and curing and reacting for 140min under the conditions of 0.3MPa and 180 ℃ to obtain the MXene@SiC solvent-free nano-fluid reinforced Basalt/PTFE blended fabric composite material lining.
Application example 4
0.2g of tannic acid and 0.2g of polyethyleneimine were dissolved in 100mL of Tris-HCl buffer aqueous solution (pH 8.5, 10 mM), followed by immersing (4 cm. Times.8 cm) of the Basalt/PTFE blend fabric in the above aqueous solution, and the reaction was slowly stirred at room temperature for 12 hours. And after the reaction is finished, taking out the blended fabric, repeatedly flushing the blended fabric with deionized water to remove unreacted substances on the surface of the fabric, and then drying the fabric in vacuum to obtain the surface-modified Basalt/PTFE blended fabric.
Adding 0.3g of MXene@SiC solvent-free nanofluid prepared in example 4 into a phenolic resin solution (10 g of phenolic resin, 70mL of dispersion solvent), then dipping the modified Basalt/PTFE blended fabric into the obtained phenolic resin mixed solution, drying in a 50 ℃ oven, and repeating the dipping-drying steps until the mass fraction of the Basalt/PTFE blended fabric in the Basalt/PTFE blended fabric composite material is reduced to 73%, so as to obtain the MXene@SiC solvent-free nanofluid reinforced Basalt/PTFE blended fabric composite material; and (3) adhering the obtained composite material on the surface of a 9Cr18Mo metal substrate by using phenolic resin, and curing and reacting for 140min under the conditions of 0.3MPa and 180 ℃ to obtain the MXene@SiC solvent-free nano-fluid reinforced Basalt/PTFE blended fabric composite material lining.
Comparative application example 1
The only difference from application example 1 is that: and omitting the MXene@SiC solvent-free nano fluid to prepare the composite lining of the Basalt/PTFE blended fabric without the MXene@SiC solvent-free nano fluid.
Comparative application example 2
The only difference from application example 1 is that: the MXene nano-sheet prepared in the embodiment 1 is adopted to replace MXene@SiC solvent-free nano-fluid, and the composite lining of the composite material of the Basalt/PTFE blended fabric loaded with the MXene nano-sheet is prepared.
Comparative application example 3
The only difference from application example 1 is that: the MXene@SiC hybrid prepared in the embodiment 1 is adopted to replace MXene@SiC solvent-free nano fluid, and the composite lining of the Basalt/PTFE blended fabric loaded with the MXene@SiC hybrid is prepared.
Performance testing
1) The MXene@SiC solvent-free nano fluid reinforced Baslt/PTFE blended fabric composite material lining prepared in application examples 1-4 and the Baslt/PTFE blended fabric composite material lining prepared in comparative application examples 1-3 are respectively subjected to friction and wear performance tests, and the test method comprises the following steps: the test conditions were: the pressure is 75MPa, the sliding friction linear speed is 0.312m/s, the time is 120min, the temperature is room temperature, a Xuanwu No. three friction and wear testing machine is adopted, no. 45 steel with the diameter of 2mm is used as a friction pair, and the friction coefficient is automatically output after collected data are processed by a connected computer. And measuring the abrasion depth of the self-lubricating fabric lining material by using a digital display altimeter, and further calculating the abrasion volume of the fabric lining. Calculating the specific wear rate of the fabric lining material by adopting a K=delta V/P.L formula, wherein the friction coefficient is automatically derived by an instrument, and the K-specific wear rate is calculated; deltaV-wear volume; p-application load; l-slip distance, and the test results obtained are shown in Table 1.
TABLE 1 Friction data for Basalt/PTFE blend fabric composites prepared in application examples 1-4 and comparative application examples 1-3
Figure BDA0003769015820000191
Figure BDA0003769015820000201
Watch with a watch1 it is known that the average wear rate and the friction coefficient of the MXene@SiC solvent-free nanofluid reinforced self-lubricating fabric lining material prepared in application example 1 are respectively 1.96×10 -14 m 3 (Nm) -1 And 0.0446, reduced by 28.7% and 28.4% relative to comparative application example 1, achieved an effective improvement in abrasion resistance and lubricity of the basal/PTFE fabric liner. Furthermore, the coefficient of friction, wear rate of application example 1 were effectively reduced as compared to comparative application example 2 and comparative application example 3, further confirming the synergistic enhancement between MXene and SiC and the outstanding dispersion properties of the nanofluid.
FIG. 2 is a graph showing the wear rate and the friction coefficient of the composite material of the Baslt/PTFE fabric prepared in application example 1 and comparative application examples 1, 2 and 3, wherein (a) in FIG. 2 is a graph showing the wear rate and (b) in FIG. 2 is a graph showing the friction coefficient; as can be seen from fig. 2, after the mxene@sic solvent-free nanofluid is reinforced, both the average wear rate and the friction coefficient of the fabric composite material are significantly reduced.
2) Preparation of MXene nanoplatelets, modified SiC nanowires, MXene@SiC hybrids and raw Material Ti for example 2 3 AlC 2 The powder is subjected to morphology characterization, and the results are shown in fig. 3 and 4, wherein (a) in fig. 3 is Ti 3 AlC 2 Scanning electron micrographs of the powders, exhibiting a typical accordion-type multilayer structure; in FIG. 3, (b) is Ti 3 AlC 2 The MXene nano-sheet picture is obtained after the powder is etched and stripped; fig. 3 (c) is a modified SiC picture of nanorods; in fig. 3, (d) is a scanning electron microscope photograph of an mxene@sic hybrid, it can be seen that SiC nanowires are loaded on the surface of an MXene nanoplatelet.
In fig. 4, (a) is a transmission electron micrograph of an MXene nanoplatelet, it can be clearly seen that MXene exhibits a distinct lamellar structure; fig. 4 (b) is a transmission electron micrograph of the modified SiC nanowire; the transmission electron micrograph of the MXene@SiC hybrid in FIG. 4 (c) further demonstrates that the SiC nanowires are uniformly supported on the surface of the MXene nanoplatelets.
3) For the MXene nanoplatelets prepared in example 2 (Ti 3 C 2 T X ) Further processing the modified SiC nanowire and MXene@SiC hybridCharacterization, results are shown in fig. 5, wherein (a) in fig. 5 is an XRD spectrum; as can be seen from (a) in fig. 5, diffraction peaks of the SiC nanowires (111), (220), (311) crystal planes and the MXene nanoplatelets (002) crystal planes appear simultaneously in the diffraction peaks of the mxene@sic hybrid; fig. 5 (b) shows an infrared absorption spectrum; as can be seen from FIG. 5 (b), the absorption peak of the MXene@SiC hybrid exhibits a simultaneous stretching vibration absorption peak of Ti-O, si-C; FIG. 5 (c) shows a Raman spectrum, and from FIG. 5 (c), ti 3 C 2 T x At 402cm -1 (B 1g ) And 625cm -1 (E g(3) ) Absorption peak at position and SiC at 789cm -1 And 956cm -1 The absorption peak at the position appears in the Raman spectrum absorption peak of the MXene@SiC hybrid at the same time; fig. 5 (d) is an electronegativity plot showing that the MXene nanoplatelets are negatively charged and the modified SiC nanowires are positively charged, which can be bound together by stronger electrostatic adsorption.
4) Characterization is carried out on the morphology, surface active group, viscosity and dispersibility in a solvent of the MXene@SiC solvent-free nanofluid prepared in example 3, and the result is shown in FIG. 6; wherein the morphology of the mxene@sic solventless nanofluid (fig. 6 (a)) is not much different from that of the mxene@sic hybrid, while the EDX spectra demonstrate that the Si and C elements in the mxene@sic solventless nanofluid are significantly enhanced relative to the mxene@sic hybrid (fig. 6 (b)); at the same time, the absorption peaks of gamma- (2, 3-Glycidoxy) Propyltriethoxysilane (GPTES) and M2070 appear in the absorption peak of MXene@SiC solvent-free nanofluid (fig. 6 (c)); fig. 6 (d) shows that the mxene@sic solvent-free nanofluid exhibits a fluid-like morphology; fig. 6 (e) demonstrates that the mxene@sic hybrids are significantly improved in dispersion in the resin solution after quasi-fluidization (NFs is nanofluidic dispersion and NPs is hybrid dispersion).
5) Characterization is carried out on the change of the surface morphology and the surface active group of the modified Baslt/PTFE blended fabric prepared in application example 2, and the result is shown in FIG. 7; wherein, the surface of the PTFE (fig. 7 (a)) and Baslt (fig. 7 (c)) fibers before modification is smooth, and has a small amount of slight lines; and after the modification by the co-deposition of tannic acid-polyethyleneimine, the surface of the fiber becomes rough, and the surface is coated with a layer of tannic acid-polyethyleneimine copolymer ((b) in fig. 7 and (d) in fig. 7). Characterization of the Baslt/PTFE blended fabric before and after modification by using infrared spectrum shows that after the Baslt/PTFE blended fabric is modified, obvious hydroxyl and amino absorption peaks appear on the surface of the fabric, and the increase of the reactive groups on the surface of the fabric is proved (fig. 7 (e)).
6) The wear surfaces of the fabric composites prepared in comparative application examples 1 and 4 were surface topography (75 mpa,0.312m/s,120 min) and the results are shown in fig. 8; wherein (a) in FIG. 8 and (a) in FIG. 8 1 ) To compare wear surfaces of the fabric composites prepared in application example 1, (b) in fig. 8 and (b) in fig. 8 1 ) In order to enhance the wear surface of the fabric composite material by the MXene@SiC solvent-free nanofluid prepared in application example 4, as can be seen from fig. 8, the wear surface of the fabric composite material after the MXene@SiC solvent-free nanofluid is added is smoother, the fiber fabric is well protected by a resin matrix, and only a small amount of resin is fallen off, so that the fabric composite material has excellent wear-resistant bearing performance.
Although the foregoing embodiments have been described in some, but not all embodiments of the invention, other embodiments may be obtained according to the present embodiments without departing from the scope of the invention.

Claims (8)

1. The MXene@SiC solvent-free nanofluid is characterized by comprising an MXene@SiC hybrid, an inner canopy layer which is covalently grafted on the surface of the MXene@SiC hybrid, and an outer canopy layer which is covalently grafted on the surface of the inner canopy layer; the MXene@SiC hybrid comprises an MXene nano sheet and a SiC nano wire loaded on the MXene nano sheet; the inner canopy is an epoxy silane coupling agent; the outer crown layer is polyetheramine; the diameter of the SiC nanowire is 200-500 nm; the length of the SiC nanowire is 5-20 mu m;
the preparation method of the MXene@SiC hybrid comprises the following steps:
mixing a SiC nanowire, a cationic surfactant and water, and modifying the SiC nanowire by the cationic surfactant to obtain a modified SiC nanowire; the cationic surfactant comprises one or more of polydiallyl dimethyl ammonium chloride, octadecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium bromide;
And mixing the MXene nano-sheet, the modified SiC nano-wire and water, and performing electrostatic self-assembly reaction on the surface of the MXene nano-sheet to obtain the MXene@SiC hybrid.
2. The MXene@SiC solvent-free nanofluid according to claim 1, wherein the mass ratio of the MXene nanoplatelets to the modified SiC nanowires is (0.5-1): 0.5-1.
3. The method for preparing the MXene@SiC solvent-free nanofluid according to claim 1 or 2, which is characterized by comprising the following steps:
mixing an MXene@SiC hybrid, an epoxy silane coupling agent and an organic solvent to perform covalent grafting reaction, and covalently grafting an inner canopy on the surface of the MXene@SiC hybrid to obtain a dispersion liquid of the hybrid grafted with the inner canopy;
and mixing the dispersion liquid of the hybrid grafted with the inner canopy with polyetheramine to perform an addition reaction, and covalently grafting an outer canopy on the surface of the inner canopy to obtain the MXene@SiC solvent-free nanofluid.
4. The preparation method of claim 3, wherein the mass ratio of the MXene@SiC hybrid to the epoxy silane coupling agent is 1 (1-2); the molar ratio of the epoxy silane coupling agent to the polyether amine is 1 (1-1.2).
5. The use of the mxene@sic solvent-free nanofluid according to claim 1 or 2 or the mxene@sic solvent-free nanofluid prepared by the preparation method according to claim 3 or 4 as a nano reinforcing filler in a fabric composite lubricating material.
6. The preparation method of the composite lubricating material is characterized by comprising the following steps of:
dipping basalt fiber/polytetrafluoroethylene blended fabric into mixed solution of tannic acid and polyethyleneimine for surface modification to obtain surface modified basalt fiber/polytetrafluoroethylene blended fabric;
mixing the nanofluid reinforcing filler with the resin solution to obtain a nanofluid reinforcing filler-resin dispersion solution; the nano-fluid reinforcing filler is the MXene@SiC solvent-free nano-fluid disclosed in claim 1 or 2 or the MXene@SiC solvent-free nano-fluid prepared by the preparation method disclosed in claim 3 or 4;
and (3) dipping the surface modified basalt fiber/polytetrafluoroethylene blended fabric into the nano fluid reinforced filler-resin dispersion solution, drying, and repeating the dipping-drying process to obtain the composite lubricating material.
7. The composite lubricating material prepared by the preparation method of claim 6, which is characterized by comprising basalt fiber/polytetrafluoroethylene blended fabric, and nanofluid reinforcing fillers and resins loaded on the surface and the inside of the basalt fiber/polytetrafluoroethylene blended fabric.
8. The composite lubricating material according to claim 7, wherein the basalt fiber/polytetrafluoroethylene blended fabric accounts for 70-80 wt% of the composite lubricating material.
CN202210895030.8A 2022-07-28 2022-07-28 MXene@SiC solvent-free nanofluid, preparation method and application thereof, composite lubricating material and preparation method thereof Active CN115198513B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210895030.8A CN115198513B (en) 2022-07-28 2022-07-28 MXene@SiC solvent-free nanofluid, preparation method and application thereof, composite lubricating material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210895030.8A CN115198513B (en) 2022-07-28 2022-07-28 MXene@SiC solvent-free nanofluid, preparation method and application thereof, composite lubricating material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN115198513A CN115198513A (en) 2022-10-18
CN115198513B true CN115198513B (en) 2023-07-04

Family

ID=83584040

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210895030.8A Active CN115198513B (en) 2022-07-28 2022-07-28 MXene@SiC solvent-free nanofluid, preparation method and application thereof, composite lubricating material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN115198513B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8912683D0 (en) * 1989-06-02 1989-07-19 Belzona Molecular Ltd Coating of metal surfaces
CN1699622A (en) * 2005-04-14 2005-11-23 上海交通大学 Process for preparing self-lubricating chemical composite plating
CN103214268B (en) * 2013-03-28 2014-10-29 西北工业大学 Preparation method of nano-wire reinforced SiC wear-resistant coating
CN113089327B (en) * 2021-04-09 2021-12-31 中国科学院兰州化学物理研究所 Aramid fiber III fiber reinforced self-lubricating liner composite material and preparation method thereof
CN114031870B (en) * 2021-10-29 2023-08-01 佛山仙湖实验室 Proton exchange membrane and preparation method and application thereof
CN114753148B (en) * 2022-04-08 2022-12-16 中国科学院兰州化学物理研究所 MXene @ UiO-66-NH2 solvent-free nano fluid, preparation and application thereof, composite material and preparation thereof

Also Published As

Publication number Publication date
CN115198513A (en) 2022-10-18

Similar Documents

Publication Publication Date Title
Wang et al. Silver nanoparticles/graphene oxide decorated carbon fiber synergistic reinforcement in epoxy-based composites
CN107880484B (en) Nano particle/graphene oxide composite modified high polymer material and preparation thereof
VR et al. Effect of silicon coupling grafted ferric oxide and e-glass fibre in thermal stability, wear and tensile fatigue behaviour of epoxy hybrid composite
Peng et al. Chemically and uniformly grafting carbon nanotubes onto carbon fibers by poly (amidoamine) for enhancing interfacial strength in carbon fiber composites
CN108504250B (en) Epoxy resin composite wear-resistant coating and preparation method thereof
CN110843294B (en) Preparation method of high-speed working condition self-lubricating fabric liner composite material
CN111644615B (en) Preparation method for realizing high strength and toughness of TC4 titanium alloy by co-strengthening method
Yang et al. Electrospun carbon nanofibers and their reinforced composites: Preparation, modification, applications, and perspectives
Yang et al. Environmentally-adaptive epoxy lubricating coating using self-assembled pMXene@ polytetrafluoroethylene core-shell hybrid as novel additive
CN108439457B (en) Method for preparing zinc oxide nanorod/carbon cloth friction material by hydrothermal electrophoresis method
CN1844228A (en) Process for preparing rare earth modified carbon nanotube/polytetrafluoroethylene composite materials
CN103924443A (en) Preparation method of carbon fiber surface antioxidation coating
CN111676699B (en) MXene/polyamide imide composite sizing agent and preparation method and application thereof
CN114645451B (en) Layered composite material and preparation method thereof, self-lubricating fiber fabric composite material and preparation method and application thereof
Zhang et al. Effects of carbon fiber surface treatment on the tribological properties of 2D woven carbon fabric/polyimide composites
CN115198513B (en) MXene@SiC solvent-free nanofluid, preparation method and application thereof, composite lubricating material and preparation method thereof
Li et al. Optimum hydrophilic modification of lanthanum trifluoride nanoparticles and their application in enhancing tribological properties of eco-friendly water-based bonded solid lubricating coatings
Chen et al. Functionalized carbon fibers with MXene via electrochemistry aryl diazonium salt reaction to improve the interfacial properties of carbon fiber/epoxy composites
CN114753148B (en) MXene @ UiO-66-NH2 solvent-free nano fluid, preparation and application thereof, composite material and preparation thereof
Song et al. Bioinspired reinforcement of cyclosiloxane hybrid polymer
Cheng et al. Surface modification of halloysite nanotubes grafted by dodecylamine and their application in reinforcing polytetrafluoroethylene
CN113235291B (en) Boron carbide-molybdenum disulfide hybrid filler, preparation and application thereof, self-lubricating fabric liner material, and preparation and application thereof
CN104631122B (en) The preparation method of high-modulus shock resistance carbon fibre composite
Jin et al. Three-dimensional interconnected Nanosheet architecture as a transition layer and Nanocontainer for interfacial enhancement of carbon fiber/epoxy composites
CN111196074B (en) Preparation method of multi-scale micro-nano filler modified self-lubricating fabric liner composite material

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant