CN106622921A - Method for rapidly preparing carbon nano tube film - Google Patents

Method for rapidly preparing carbon nano tube film Download PDF

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Publication number
CN106622921A
CN106622921A CN201610950230.3A CN201610950230A CN106622921A CN 106622921 A CN106622921 A CN 106622921A CN 201610950230 A CN201610950230 A CN 201610950230A CN 106622921 A CN106622921 A CN 106622921A
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CN
China
Prior art keywords
carbon nano
film
substrate
tube film
nano tube
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Pending
Application number
CN201610950230.3A
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Chinese (zh)
Inventor
张斌
张俊彦
薛勇
高凯雄
杨保平
崔锦峰
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Lanzhou Institute of Chemical Physics LICP of CAS
Lanzhou University of Technology
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Lanzhou Institute of Chemical Physics LICP of CAS
Lanzhou University of Technology
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Priority to CN201610950230.3A priority Critical patent/CN106622921A/en
Publication of CN106622921A publication Critical patent/CN106622921A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/002—Pretreatement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/007—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2201/00—Polymeric substrate or laminate
    • B05D2201/02—Polymeric substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon

Abstract

The invention discloses a method for rapidly preparing a carbon nano tube film. The method comprises the following steps that 1, wiredrawing, texturing or polishing treatment is conducted on the surface of a substrate; 2, oil contaminations on the surface of the substrate are removed by adopting acetone/ethyl alcohol ultrasonic cleaning, and then blow-drying is performed with N2; 3, carbon nano tube powder is put between two treated substrates, and then one-way reciprocated opposite grinding is conducted on the substrates, wherein obtained films are black and are tightly combined with the substrates, and the thickness of the films depends on coating times. The pretreatment of the method is simple, posttreatment is not needed, and the method is suitable for large-area and rapid preparation and can be used for abrasion resistance and friction coefficient reduction of the surfaces of metal, ceramic, polymer materials and the like.

Description

A kind of method for quickly preparing carbon nano-tube film
Technical field
The invention belongs to surface lubrication and protection field, are related to a kind of method for quickly preparing carbon nano-tube film, mainly For reducing the friction and wear of low-speed motion parts surface.
Background technology
Any component of machine inevitably produces friction and wear phenomenon during work, and friction causes huge Big energy loss, and wearing and tearing reduces then plant equipment precision and reliability, therefore, control friction reduces abrasion to section About the energy, raising equipment dependability and prolonged mechanical part life have vital meaning.
CNT（CNTs）It is a kind of special nano material, it is considered to be by Graphene face through to a certain degree bending Hollow circular cylinder, with higher intensity, modulus, toughness, play " micro- bearing " well on the surface of friction pair Effect, is the preferable material of antifriction antiwear while with excellent self-lubricating property, can effectively improve wear Characteristics Material, has huge application prospect in tribological field.
Carbon nano-tube film has important work at aspects such as composite, field emmision material, fuel cell, solid lubrication With.However, how rapid large-area prepares carbon nano-tube film becomes the maximum resistance of its application；Sun etc.（Sun Z., Cheng X. Investigation of carbon nanotube-containing film on silicon substrates and its tribological behavior [J]. Applied Surface Science, 2015, 355: 272）Multi-wall carbon nano-tube film is obtained in Si substrates by way of self assembly, subsequently to its friction and wear behavior Studied, its coefficient of friction is 0.12（The mN of load 500）.But the pretreatment process that preparation process is related to is complicated, and the cycle is very Long, Piranha solution danger coefficient used is high and solvent has pollution to environment.
Tsing-Hua University's patent（CN 200410034108.9）Disclose a kind of electrophoretic deposition preparation side of carbon nano-tube film Method, though the film uniformity of gained is preferably, preparation process is related to the modification of CNT, carbon nanotubes suspension Configuration, electrophoretic deposition and post processing, take very long（More than ten hours）, flexibility is poor.
Zhejiang University's patent（CN 200810059933.2）A kind of preparation method of single armed carbon nano-tube film is disclosed, I.e. under the conditions of the mixed gas of molybdenum/iron dual catalyst, hydrogen and argon gas, using arc discharge carbon nano-tube film is obtained.This Method is high to equipment requirement, very flexible.
Up to the present, the method for carbon nano-tube film still has very flexible, and equipment requirement is high, and time-consuming, ring The drawbacks such as border pollution, and it is unsuitable for large area preparation.
The content of the invention
It is an object of the invention to provide a kind of method for quickly preparing carbon nano-tube film.
The present invention is by machinery erasing carbon nanotube powder（0.4-100 nm）So as to form solid lubricating film, substrate is needed Be pre-processed into certain texture, the advantage of this film be load from 5-15 N change when, stable friction factor and with load Lotus, friction not substantially, generally maintain 0.09-0.13 with secondary change（Number of plies different coefficients of friction is different）, far below substrate Coefficient of friction（0.55 or so）, wear scar width and depth are obviously reduced.Pre-treatment of the present invention is simple and need not post-process, and fits Close large area quickly to prepare, can be used for the wear-resistant of the material surfaces such as metal, ceramics and polymer and reduce coefficient of friction.
A kind of method for quickly preparing carbon nano-tube film, it is characterised in that comprise the following steps：
Step one；Wire drawing, texturing or polishing are carried out to substrate surface；
Step 2：Adopt acetone/ethanol to be cleaned by ultrasonic to remove the greasy dirt of substrate surface, then use N2Dry up；
Step 3：Carbon nanotube powder is placed between two pieces of processed substrates, then is carried out unidirectional reciprocal to mill, institute Film is obtained for black, and substrate is tightly combined, the thickness of film is determined by number of times is coated.
The substrate is metal, ceramics or polymer.
The caliber of the carbon nanotube powder is 0.4-100 nm.
The CNT is single wall or many walls.
The reciprocal speed to grinding is 5 m/min.
The tribological property of film is tested（The N-15 N of load 5）, with steel ball, Si3N4Ball or Al2O3Ball is used as rubbing Wipe with pair.As a result stable friction factor is shown in 0.09-0.13, and with load, friction with less, the wear scar width of secondary change fluctuation It is obviously reduced with depth.
Carbon nano-tube film prepared by the present invention has excellent tribological property, and preparation method is simple, not restricted The restriction of standby area, is conducive to industrial applications.
Description of the drawings
Fig. 1 is syntheti c route schematic diagram of the present invention.
Fig. 2 be erasing carbon nano-tube film before and after under the conditions of 5-15 N varying loads, Al2O3As friction with rubbing during pair Wipe coefficient curve（Figure a）With abrasion 2D profile diagrams（Figure b:Stainless steel, schemes c:CNT/stainless steel）.
Specific embodiment
Embodiment 1
Step one：Take 201 piece of stainless steel（40 mm×20 mm×1.7 mm）, surface carries out wire drawing process, roughness 0.04- 0.05R；
Step 2：It is cleaned by ultrasonic using acetone/ethanol（30 min）To remove the greasy dirt on its surface, then use N2Dry up；
Step 3：By double-walled carbon nano-tube powder（2-7 nm）Be placed between two pieces of 201 processed piece of stainless steel, then by its Carry out unidirectional reciprocal to mill（5 m/min）（Fig. 1）, gained sample is black, and substrate is tightly combined, and the thickness of film is by coating Number of times is determining；
Step 4：Using MFT-R4000 friction wear testing machines and three-dimensional surface profile instrument（MicroXAM-3D）Investigate respectively thin The tribological property and wear results of film；
The tribological property of film is tested（The N-15 N of varying load 5）, use Al2O3Ball is as friction with pair.As a result show and rub Wipe coefficient stabilization in 0.10-0.11 and less with load, wear scar width and depth are obviously reduced.Fig. 2 gives 5-15 N variable loads Fretting wear result under lotus.
Embodiment 2
Step one：Take 304 piece of stainless steel（40 mm×20 mm×1.7 mm）, surface carries out wire drawing process, roughness 0.04- 0.05R；
Step 2：It is cleaned by ultrasonic using acetone/ethanol（30 min）To remove the greasy dirt on its surface, then use N2Dry up；
Step 3：By single pipe powder（0.4-2 nm）It is placed between two pieces of 304 processed piece of stainless steel, then will It carries out unidirectional reciprocal to mill（5 m/min）（Fig. 1）, gained sample is black, and substrate is tightly combined, and the thickness of film is by applying Cover number of times to determine；
Step 4：Using MFT-R4000 friction wear testing machines and three-dimensional surface profile instrument（MicroXAM-3D）Investigate respectively thin The tribological property and wear results of film；
The tribological property of film is tested（The N-15 N of varying load 5）, use Si3N4Ball is as friction with pair.As a result show and rub Wipe coefficient stabilization in 0.11-0.13 and less with load, wear scar width and depth are obviously reduced.
Embodiment 3
Step one：Take two pieces of polyurethane（40 mm×20 mm×1.7 mm）；
Step 2：It is cleaned by ultrasonic using acetone/ethanol（30 min）To remove the greasy dirt on its surface, then use N2Dry up；
Step 3：By multi-wall carbon nano-tube pipe powder（7-100 nm）Be placed between two pieces of processed polyurethane blocks, then by its Carry out unidirectional reciprocal to mill（5 m/min）（Fig. 1）, gained sample is black, and substrate is tightly combined, and the thickness of film is by coating Number of times is determining；
Step 4：Using MFT-R4000 friction wear testing machines and three-dimensional surface profile instrument（MicroXAM-3D）Investigate respectively thin The tribological property and wear results of film；
The tribological property of film is tested（The N-15 N of varying load 5）, with GCr15 balls as friction with pair.As a result show and rub Wipe coefficient stabilization to be obviously reduced in 0.09-0.11, wear scar width and depth.
Embodiment 4
Step one：Take two pieces of 201 stainless steel of polishing（40 mm×20 mm×1.7 mm）, surface carries out dot matrix process, per four Individual point constitutes 1x1 mm2Square；
Step 2：It is cleaned by ultrasonic using acetone/ethanol（30 min）To remove the greasy dirt on its surface, then use N2Dry up；
Step 3：Plate one layer of TiN above again（Thickness is 50-70 nm）；
Step 4：By multi-wall carbon nano-tube pipe powder（7-100 nm）It is placed between two pieces of 201 piece of stainless steel for having plated TiN, then Carried out unidirectional reciprocal to mill（5 m/min）（Fig. 1）, gained sample is black, and substrate is tightly combined, the thickness of film by Coat number of times to determine；
Step 5：Using MFT-R4000 friction wear testing machines and three-dimensional surface profile instrument（MicroXAM-3D）Investigate respectively thin The tribological property and wear results of film；
The tribological property of film is tested（The N-15 N of varying load 5）, use Al2O3Ball is as friction with pair.As a result show and rub Wipe coefficient stabilization to be obviously reduced in 0.09-0.11, wear scar width and depth.

Claims (5)

1. a kind of method for quickly preparing carbon nano-tube film, it is characterised in that comprise the following steps：
Step one；Wire drawing, texturing or polishing are carried out to substrate surface；
Step 2：Adopt acetone/ethanol to be cleaned by ultrasonic to remove the greasy dirt of substrate surface, then use N2Dry up；
Step 3：Carbon nanotube powder is placed between two pieces of processed substrates, then is carried out unidirectional reciprocal to mill, institute Film is obtained for black, and substrate is tightly combined, the thickness of film is determined by number of times is coated.
2. the method for claim 1, it is characterised in that the substrate is metal, ceramics or polymer.
3. the method for claim 1, it is characterised in that the caliber of the CNT is 0.4-100 nm.
4. the method for claim 1, it is characterised in that the CNT is single wall or many walls.
5. the method for claim 1, it is characterised in that the reciprocal speed to grinding is 5 m/min.
CN201610950230.3A 2016-11-03 2016-11-03 Method for rapidly preparing carbon nano tube film Pending CN106622921A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030039750A1 (en) * 2001-08-24 2003-02-27 Dongsheng Mao Catalyst for carbon nanotube growth
CN106024968A (en) * 2016-05-31 2016-10-12 合肥工业大学 Graphene/carbon nanotube thin film schottky junction photoelectric detector and preparation method therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030039750A1 (en) * 2001-08-24 2003-02-27 Dongsheng Mao Catalyst for carbon nanotube growth
CN106024968A (en) * 2016-05-31 2016-10-12 合肥工业大学 Graphene/carbon nanotube thin film schottky junction photoelectric detector and preparation method therefor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
A. MOSHKOVICH ET.AL: "Friction and wear of solid lubricant films deposited by different types of burnishing", 《WEAR》 *
KAI-XUAN HE ET.AL: "Mechanical fabrication of carbon nanotube/TiO2nanoparticle composite films and their field-emission properties", 《PHYSICA STATUS SOLIDI A》 *

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Application publication date: 20170510