CN108485135A - A kind of Fluorine-lined pipeline of ultralow friction coefficient - Google Patents
A kind of Fluorine-lined pipeline of ultralow friction coefficient Download PDFInfo
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- CN108485135A CN108485135A CN201810238536.5A CN201810238536A CN108485135A CN 108485135 A CN108485135 A CN 108485135A CN 201810238536 A CN201810238536 A CN 201810238536A CN 108485135 A CN108485135 A CN 108485135A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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Abstract
The invention discloses a kind of Fluorine-lined pipeline of ultralow friction coefficient, including tube body, the tubular body is provided with backing layer, and the backing layer is made of modified teflon material, and the modified Teflon includes following parts by weight composition：Polytetrafluoroethylene (PTFE)：100 parts of modified graphenes：5 parts；The modified graphene includes following mass parts compositions：In the pipeline of the present invention, by the way that lining is arranged in tube body, in the selection of lining, homemade modified Teflon is selected, modified graphene is added into polytetrafluoroethylene (PTFE) raw material, effectively can further improve the friction coefficient of polytetrafluoroethylene (PTFE).And after modified graphene is mainly modified by graphene by coupling agent, obtained modification coupling agent, the friction coefficient of lining can be being improved by the modified graphene after coupling agent modified simultaneously, the peel strength of lining and metal material can also be improved, especially during long-time use, remain able to that there is preferable friction coefficient.
Description
Technical field
The present invention relates to a kind of production equipment, the Fluorine-lined pipeline of more particularly to a kind of ultralow friction coefficient.
Background technology
Pipeline is to be used to convey gas, liquid or with solid particle with what pipe, pipe connector and valve etc. were connected into
Fluid device.In general, after the superchargings such as air blower, compressor, pump and boiler, low pressure is flowed to from the high pressure of pipeline for fluid
Pressure or the gravity conveying of fluid itself can also be used in place.Having many uses for pipeline is general, be used primarily in water supply, draining, heat supply,
It gives gas, in long distance delivery oil and natural gas, agricultural irrigation, hydraulic engineering and various commercial plants.
A strata tetrafluoroethene can be served as a contrast in specific use, in pipeline, polytetrafluoroethylene (PTFE) is served as a contrast by equal-pressure method in pipeline
Portion, equal-pressure method are by workpiece（The parts such as pipeline, elbow, the threeway of steel）, rubber bag, stay tube, PTFE powders, end cap, sealing
After installation, it is placed in the closed autoclave of an energy pressure-bearing 30Mpa.Hydraulic pressure is increased into 30Mpa, rubber bag expansion will
PTFE powders are closely compacted the inner wall in workpiece.It is inside and outside since inside and outside wall of the workpiece in kettle is by the hydraulic pressure of 30Mpa
Stress is equal and cancels out each other, and workpiece load is little, is not destroyed, therefore claims equal-pressure method.
The pipeline of teflon lined when in some high progress equipment and instrument, need to be precisely controlled flow and
Flow velocity, at this point for lining friction coefficient it is more demanding, friction coefficient is lower, and flow losses are smaller, also easier control
Flow and flow rate processed.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of Fluorine-lined pipe of ultralow friction coefficient
Road.
To achieve the above object, the present invention provides following technical solutions：
A kind of Fluorine-lined pipeline of ultralow friction coefficient, including tube body, the tubular body are provided with backing layer, the backing layer by
Modified teflon material is made, and the modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
The modified graphene includes following mass parts compositions：
100 parts of graphene
(N, N- dimethyl -3- aminopropyls) trimethoxy silane：2 parts
3,3,3- trifluoro propyl methyl dimethoxysilanes：1 part
Seven Flutamide of N- methyl-N- trimethyls silicon substrate：1 part
3- (isobutene acyl-oxygen) propyl trimethoxy silicane：5 parts；
The preparation method of the modified graphene is：
Step 1：By the graphene oxide of graphene oxidation system；
Step 2：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyl methyl dimethoxy oxygroup silicon
Alkane, seven Flutamide of N- methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are dispersed in dispersion liquid
In；
Step 3：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified stone
Black alkene.
As a further improvement on the present invention：
The step 1 is：It in the excessive concentrated sulfuric acid, is added in container, temperature is controlled at 4 DEG C by ice bath, is added later
The graphene of 100 mesh, later in the NaNO that graphene half quality is added3, it is slowly added to three times graphene quality later
Potassium permanganate, be added and complete, stir 90 minutes under condition of ice bath, change ice bath into water-bath later, control temperature at 35 DEG C,
Reaction 30 minutes, is added the deionized water of double concentrated sulfuric acid volume, is heated to 80 DEG C later, is slowly added to the double of 5% concentration later
Oxygen water washs after reaction solution is in gold in centrifuge, until BaCl2After no white precipitate generates, dried at 50 DEG C
To graphene oxide.
As a further improvement on the present invention：
Dispersion liquid in the step 2 is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
As a further improvement on the present invention：
The step 3 is that graphene oxide slurry is added in solvent liquid, and dispersion oxidation stone is carried out within 0.5 ~ 2 hour by ultrasound
Black alkene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while in microwave
Under the conditions of react 4h, later by paste successively pass through absolute ethyl alcohol and deionized water washing three times, drying obtain modified graphite
Alkene.
As a further improvement on the present invention：
The preparation method of the modified Teflon includes the following steps：
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
As a further improvement on the present invention：
Further include having 10 parts of dispersant, double fluorine (fluorosulfonyl) acetic acid esters of the dispersant trimethylsilyl.
As a further improvement on the present invention：
The step A is first to be thoroughly mixed dispersant and modified graphene, later again by said mixture and and four
Vinyl fluoride particle is thoroughly mixed.
In the pipeline of the present invention, by the way that lining is arranged in tube body, in the selection of lining, select homemade modification poly-
Tetrafluoroethene is added into modified graphene in polytetrafluoroethylene (PTFE) raw material, effectively can further improve polytetrafluoroethylene (PTFE)
Friction coefficient.And after modified graphene is mainly modified by graphene by coupling agent, obtained modification coupling agent leads to
Cross it is coupling agent modified after modified graphene can improve the friction coefficient of lining simultaneously, additionally it is possible to improve lining and metal
The peel strength of material remains able to have preferable friction coefficient especially during long-time use.
Specific implementation mode
Embodiment one：
A kind of Fluorine-lined pipeline of ultralow friction coefficient, including tube body, the tubular body are provided with backing layer, the backing layer by
Modified teflon material is made, and the modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
The modified graphene includes following mass parts compositions：
100 parts of graphene
(N, N- dimethyl -3- aminopropyls) trimethoxy silane：2 parts
3,3,3- trifluoro propyl methyl dimethoxysilanes：1 part
Seven Flutamide of N- methyl-N- trimethyls silicon substrate：1 part
3- (isobutene acyl-oxygen) propyl trimethoxy silicane：5 parts；
The preparation method of the modified graphene is：
Step 1：By the graphene oxide of graphene oxidation system；
Step 2：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyl methyl dimethoxy oxygroup silicon
Alkane, seven Flutamide of N- methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are dispersed in dispersion liquid
In；
Step 3：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified stone
Black alkene.
The step 1 is：It in the excessive concentrated sulfuric acid, is added in container, is controlled temperature at 4 DEG C by ice bath, Zhi Houjia
Enter the graphene of 100 mesh, later in the NaNO that graphene half quality is added3, it is slowly added to three times graphene matter later
The potassium permanganate of amount is added and completes, and is stirred under condition of ice bath 90 minutes, changes ice bath into water-bath later, control temperature is 35
DEG C, it reacts 30 minutes, the deionized water of double concentrated sulfuric acid volume is added later, is heated to 80 DEG C, is slowly added to 5% concentration later
Hydrogen peroxide, after reaction solution in being washed in centrifuge after golden, until BaCl2After no white precipitate generates, dried at 50 DEG C
It is dry to obtain graphene oxide.
Dispersion liquid in the step 2 is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
The step 3 is that graphene oxide slurry is added in solvent liquid, and dispersion oxygen is carried out within 0.5 ~ 2 hour by ultrasound
Graphite alkene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while
4h is reacted under microwave condition, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying is modified
Graphene.
The preparation method of the modified Teflon includes the following steps：
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
Further include having 10 parts of dispersant, double fluorine (fluorosulfonyl) acetic acid esters of the dispersant trimethylsilyl.
The step A is first to be thoroughly mixed dispersant and modified graphene, later again by said mixture with
And tetrafluoroethene particle is thoroughly mixed.
Embodiment two：
Including tube body, the tubular body is provided with backing layer, and the backing layer is made of modified teflon material, described
Modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
The modified graphene includes following mass parts compositions：
100 parts of graphene
(N, N- dimethyl -3- aminopropyls) trimethoxy silane：2 parts
3,3,3- trifluoro propyl methyl dimethoxysilanes：1 part
Seven Flutamide of N- methyl-N- trimethyls silicon substrate：1 part
3- (isobutene acyl-oxygen) propyl trimethoxy silicane：5 parts；
The preparation method of the modified graphene is：
Step 1：By the graphene oxide of graphene oxidation system；
Step 2：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyl methyl dimethoxy oxygroup silicon
Alkane, seven Flutamide of N- methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are dispersed in dispersion liquid
In；
Step 3：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified stone
Black alkene.
The step 1 is：It in the excessive concentrated sulfuric acid, is added in container, is controlled temperature at 4 DEG C by ice bath, Zhi Houjia
Enter the graphene of 100 mesh, later in the NaNO that graphene half quality is added3, it is slowly added to three times graphene matter later
The potassium permanganate of amount is added and completes, and is stirred under condition of ice bath 90 minutes, changes ice bath into water-bath later, control temperature is 35
DEG C, it reacts 30 minutes, the deionized water of double concentrated sulfuric acid volume is added later, is heated to 80 DEG C, is slowly added to 5% concentration later
Hydrogen peroxide, after reaction solution in being washed in centrifuge after golden, until BaCl2After no white precipitate generates, dried at 50 DEG C
It is dry to obtain graphene oxide.
Dispersion liquid in the step 2 is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
The step 3 is that graphene oxide slurry is added in solvent liquid, and dispersion oxygen is carried out within 0.5 ~ 2 hour by ultrasound
Graphite alkene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while
4h is reacted under microwave condition, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying is modified
Graphene.
The preparation method of the modified Teflon includes the following steps：
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
Comparative example one：
City reaches polytetrafluoroethylgranule granule.
Comparative example two：
Including tube body, the tubular body is provided with backing layer, and the backing layer is made of modified teflon material, described
Modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
Comparative example three：
Including tube body, the tubular body is provided with backing layer, and the backing layer is made of modified teflon material, described
Modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
The modified graphene includes following mass parts compositions：
100 parts of graphene
(N, N- dimethyl -3- aminopropyls) trimethoxy silane：2 parts
The preparation method of the modified graphene is：
Step 1：By the graphene oxide of graphene oxidation system；
Step 2：(N, N- dimethyl -3- aminopropyls) trimethoxy silane is dispersed in dispersion liquid；
Step 3：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified stone
Black alkene.
The step 1 is：It in the excessive concentrated sulfuric acid, is added in container, is controlled temperature at 4 DEG C by ice bath, Zhi Houjia
Enter the graphene of 100 mesh, later in the NaNO that graphene half quality is added3, it is slowly added to three times graphene matter later
The potassium permanganate of amount is added and completes, and is stirred under condition of ice bath 90 minutes, changes ice bath into water-bath later, control temperature is 35
DEG C, it reacts 30 minutes, the deionized water of double concentrated sulfuric acid volume is added later, is heated to 80 DEG C, is slowly added to 5% concentration later
Hydrogen peroxide, after reaction solution in being washed in centrifuge after golden, until BaCl2After no white precipitate generates, dried at 50 DEG C
It is dry to obtain graphene oxide.
Dispersion liquid in the step 2 is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
The step 3 is that graphene oxide slurry is added in solvent liquid, and dispersion oxygen is carried out within 0.5 ~ 2 hour by ultrasound
Graphite alkene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while
4h is reacted under microwave condition, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying is modified
Graphene.
The preparation method of the modified Teflon includes the following steps：
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
Further include having 10 parts of dispersant, double fluorine (fluorosulfonyl) acetic acid esters of the dispersant trimethylsilyl.
The step A is first to be thoroughly mixed dispersant and modified graphene, later again by said mixture with
And tetrafluoroethene particle is thoroughly mixed.
Comparative example four：
Including tube body, the tubular body is provided with backing layer, and the backing layer is made of modified teflon material, described
Modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
The modified graphene includes following mass parts compositions：
100 parts of graphene
(N, N- dimethyl -3- aminopropyls) trimethoxy silane：2 parts
3,3,3- trifluoro propyl methyl dimethoxysilanes：1 part
Seven Flutamide of N- methyl-N- trimethyls silicon substrate：1 part；
The preparation method of the modified graphene is：
Step 1：By the graphene oxide of graphene oxidation system；
Step 2：3,3,3- trifluoro propyl methyl dimethoxysilanes are dispersed in dispersion liquid；
Step 3：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified stone
Black alkene.
The step 1 is：It in the excessive concentrated sulfuric acid, is added in container, is controlled temperature at 4 DEG C by ice bath, Zhi Houjia
Enter the graphene of 100 mesh, later in the NaNO that graphene half quality is added3, it is slowly added to three times graphene matter later
The potassium permanganate of amount is added and completes, and is stirred under condition of ice bath 90 minutes, changes ice bath into water-bath later, control temperature is 35
DEG C, it reacts 30 minutes, the deionized water of double concentrated sulfuric acid volume is added later, is heated to 80 DEG C, is slowly added to 5% concentration later
Hydrogen peroxide, after reaction solution in being washed in centrifuge after golden, until BaCl2After no white precipitate generates, dried at 50 DEG C
It is dry to obtain graphene oxide.
Dispersion liquid in the step 2 is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
The step 3 is that graphene oxide slurry is added in solvent liquid, and dispersion oxygen is carried out within 0.5 ~ 2 hour by ultrasound
Graphite alkene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while
4h is reacted under microwave condition, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying is modified
Graphene.
The preparation method of the modified Teflon includes the following steps：
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
Further include having 10 parts of dispersant, double fluorine (fluorosulfonyl) acetic acid esters of the dispersant trimethylsilyl.
The step A is first to be thoroughly mixed dispersant and modified graphene, later again by said mixture with
And tetrafluoroethene particle is thoroughly mixed.
Comparative example five：
Including tube body, the tubular body is provided with backing layer, and the backing layer is made of modified teflon material, described
Modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
The modified graphene includes following mass parts compositions：
100 parts of graphene
Seven Flutamide of N- methyl-N- trimethyls silicon substrate：1 part
The preparation method of the modified graphene is：
Step 1：By the graphene oxide of graphene oxidation system；
Step 2：Seven Flutamide of N- methyl-N- trimethyls silicon substrate is dispersed in dispersion liquid；
Step 3：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified stone
Black alkene.
The step 1 is：It in the excessive concentrated sulfuric acid, is added in container, is controlled temperature at 4 DEG C by ice bath, Zhi Houjia
Enter the graphene of 100 mesh, later in the NaNO that graphene half quality is added3, it is slowly added to three times graphene matter later
The potassium permanganate of amount is added and completes, and is stirred under condition of ice bath 90 minutes, changes ice bath into water-bath later, control temperature is 35
DEG C, it reacts 30 minutes, the deionized water of double concentrated sulfuric acid volume is added later, is heated to 80 DEG C, is slowly added to 5% concentration later
Hydrogen peroxide, after reaction solution in being washed in centrifuge after golden, until BaCl2After no white precipitate generates, dried at 50 DEG C
It is dry to obtain graphene oxide.
Dispersion liquid in the step 2 is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
The step 3 is that graphene oxide slurry is added in solvent liquid, and dispersion oxygen is carried out within 0.5 ~ 2 hour by ultrasound
Graphite alkene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while
4h is reacted under microwave condition, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying is modified
Graphene.
The preparation method of the modified Teflon includes the following steps：
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
Further include having 10 parts of dispersant, double fluorine (fluorosulfonyl) acetic acid esters of the dispersant trimethylsilyl.
The step A is first to be thoroughly mixed dispersant and modified graphene, later again by said mixture with
And tetrafluoroethene particle is thoroughly mixed.
Comparative example six：
Including tube body, the tubular body is provided with backing layer, and the backing layer is made of modified teflon material, described
Modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
The modified graphene includes following mass parts compositions：
100 parts of graphene
3- (isobutene acyl-oxygen) propyl trimethoxy silicane：5 parts；
The preparation method of the modified graphene is：
Step 1：By the graphene oxide of graphene oxidation system；
Step 2：3- (isobutene acyl-oxygen) propyl trimethoxy silicane is dispersed in dispersion liquid；
Step 3：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified stone
Black alkene.
The step 1 is：It in the excessive concentrated sulfuric acid, is added in container, is controlled temperature at 4 DEG C by ice bath, Zhi Houjia
Enter the graphene of 100 mesh, later in the NaNO that graphene half quality is added3, it is slowly added to three times graphene matter later
The potassium permanganate of amount is added and completes, and is stirred under condition of ice bath 90 minutes, changes ice bath into water-bath later, control temperature is 35
DEG C, it reacts 30 minutes, the deionized water of double concentrated sulfuric acid volume is added later, is heated to 80 DEG C, is slowly added to 5% concentration later
Hydrogen peroxide, after reaction solution in being washed in centrifuge after golden, until BaCl2After no white precipitate generates, dried at 50 DEG C
It is dry to obtain graphene oxide.
Dispersion liquid in the step 2 is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
The step 3 is that graphene oxide slurry is added in solvent liquid, and dispersion oxygen is carried out within 0.5 ~ 2 hour by ultrasound
Graphite alkene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while
4h is reacted under microwave condition, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying is modified
Graphene.
The preparation method of the modified Teflon includes the following steps：
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
Further include having 10 parts of dispersant, double fluorine (fluorosulfonyl) acetic acid esters of the dispersant trimethylsilyl.
The step A is first to be thoroughly mixed dispersant and modified graphene, later again by said mixture with
And tetrafluoroethene particle is thoroughly mixed.
Experiment：
Plastic pellet is clayed into power, by equal-pressure method, is lining into castiron tube body, liner diameters 10cm, pipeline
Internal diameter is 13cm, detects its peel strength and friction coefficient later.In addition to this, the pipe of modified Teflon will be entirely lined with
Body flows through in the sodium hydrate aqueous solution that pH is 8.5, and flow control is flowed 48 hours, detected later in 3m/s, persistent loop
Its peel strength and friction coefficient；In addition the aqueous hydrochloric acid solution that the tube body of modified Teflon is 6.5 in pH will be entirely lined with
In flow through, in 3m/s, persistent loop flows 48 hours flow control, detects its peel strength and friction coefficient later.
In the pipeline of the present invention, by the way that lining is arranged in tube body, in the selection of lining, select homemade modification poly-
Tetrafluoroethene is added into modified graphene in polytetrafluoroethylene (PTFE) raw material, effectively can further improve polytetrafluoroethylene (PTFE)
Friction coefficient.And after modified graphene is mainly modified by graphene by coupling agent, obtained modification coupling agent leads to
Cross it is coupling agent modified after modified graphene can improve the friction coefficient of lining simultaneously, additionally it is possible to improve lining and metal
The peel strength of material remains able to have preferable friction coefficient especially during long-time use.
Select double fluorine (fluorosulfonyl) acetic acid esters of trimethylsilyl that can improve especially in the selection of dispersant
Dispersion performance of the modified graphene in polytetrafluoroethylene (PTFE), and listen the wearing coefficient and peel strength of sound entirety.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of Fluorine-lined pipeline of ultralow friction coefficient, it is characterised in that：Including tube body, the tubular body is provided with lining
Layer, the backing layer are made of modified teflon material, and the modified Teflon includes following parts by weight composition：
Polytetrafluoroethylene (PTFE)：100 parts
Modified graphene：5 parts；
The modified graphene includes following mass parts compositions：
100 parts of graphene
(N, N- dimethyl -3- aminopropyls) trimethoxy silane：2 parts
3,3,3- trifluoro propyl methyl dimethoxysilanes：1 part
Seven Flutamide of N- methyl-N- trimethyls silicon substrate：1 part
3- (isobutene acyl-oxygen) propyl trimethoxy silicane：5 parts；
The preparation method of the modified graphene is：
Step 1：By the graphene oxide of graphene oxidation system；
Step 2：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyl methyl dimethoxy oxygroup silicon
Alkane, seven Flutamide of N- methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are dispersed in dispersion liquid
In；
Step 3：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified stone
Black alkene.
2. a kind of Fluorine-lined pipeline of ultralow friction coefficient according to claim 1, it is characterised in that：
The step 1 is：It in the excessive concentrated sulfuric acid, is added in container, temperature is controlled at 4 DEG C by ice bath, is added later
The graphene of 100 mesh, later in the NaNO that graphene half quality is added3, it is slowly added to three times graphene quality later
Potassium permanganate, be added and complete, stir 90 minutes under condition of ice bath, change ice bath into water-bath later, control temperature at 35 DEG C,
Reaction 30 minutes, is added the deionized water of double concentrated sulfuric acid volume, is heated to 80 DEG C later, is slowly added to the double of 5% concentration later
Oxygen water is washed in centrifuge after reaction solution is in gold, until after BaCl2 is generated without white precipitate, is dried at 50 DEG C
To graphene oxide.
3. a kind of Fluorine-lined pipeline of ultralow friction coefficient according to claim 2, it is characterised in that：In the step 2
Dispersion liquid is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
4. a kind of Fluorine-lined pipeline of ultralow friction coefficient according to claim 3, it is characterised in that：The step 3 is will
Graphene oxide slurry is added in solvent liquid, carries out dispersion graphene oxide solution within 0.5 ~ 2 hour by ultrasound, slowly adds later
Enter the dispersion liquid in step 2, later under nitrogen protection in temperature control at 90 DEG C, while reacting 4h under microwave condition, later will
Paste passes through absolute ethyl alcohol and deionized water washing three times successively, and drying obtains modified graphene.
5. a kind of Fluorine-lined pipeline of ultralow friction coefficient according to claim 4, it is characterised in that：The modified polytetrafluoro
The preparation method of ethylene includes the following steps：
Step A：Polytetrafluoroethylgranule granule is mixed with modified graphene；
Step B：It is added in double screw extruder after completing mixing, is extruded into modified polytetrafluoroethylparticles particles.
6. a kind of Fluorine-lined pipeline of ultralow friction coefficient according to claim 5, it is characterised in that：
Further include having 10 parts of dispersant, double fluorine (fluorosulfonyl) acetic acid esters of the dispersant trimethylsilyl.
7. a kind of Fluorine-lined pipeline of ultralow friction coefficient according to claim 6, it is characterised in that：
The step A is first to be thoroughly mixed dispersant and modified graphene, later again by said mixture and and four
Vinyl fluoride particle is thoroughly mixed.
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