CN108407312A - A kind of low-friction coefficient Fluorine-lined plate note technique - Google Patents
A kind of low-friction coefficient Fluorine-lined plate note technique Download PDFInfo
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- CN108407312A CN108407312A CN201810241735.1A CN201810241735A CN108407312A CN 108407312 A CN108407312 A CN 108407312A CN 201810241735 A CN201810241735 A CN 201810241735A CN 108407312 A CN108407312 A CN 108407312A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4825—Pressure sensitive adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/40—Applying molten plastics, e.g. hot melt
- B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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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
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
-
- 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
Abstract
The invention discloses a kind of low-friction coefficient Fluorine-lined plate note technique, step 1：Dispensing, modified Teflon include following weight parts composition：Polytetrafluoroethylene (PTFE)：100 parts of 4 piperidones of N tertbutyloxycarbonyls：5 part of 24 ketone group N t-butoxycarbonylpiperidin of methyl：2 parts of tetramethylene ethylene glycol list vinethenes：3 parts of step 2：The preparation process three of modified graphene：The preparation of modified Teflon；Step 4：Plank is bonded to the inner wall of container or pipeline by adhesive；Step 5：PFA welding rods are put between gap between plank and plank；Step 6：It is welded by PFA welding rods and welds together plank and plank.The Fluorine-lined container or pipeline obtained by above-mentioned technique has lower friction coefficient.
Description
Technical field
The present invention relates to a kind of equipment production technology, more particularly to a kind of low-friction coefficient Fluorine-lined plate note work
Skill.
Background technology
It, can be in container or pipe liner last layer polytetrafluoroethylene (PTFE) when there is specific use in existing Chemical Manufacture.It is poly-
Tetrafluoroethene（Polytetrafluoroethylene is abbreviated as PTFE, commonly referred to as " non-sticking lining " or " material easy to clean.
This material has the characteristics that antiacid alkali resistant, resists various organic solvents, is practically insoluble in all solvents.Meanwhile polytetrafluoroethyl-ne
Alkene has the characteristics that heat safe, its friction coefficient is extremely low, so after can making lubricating action, also becomes in water pipe easy to clean
The ideal coating of layer.
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 low-friction coefficient Fluorine-lined plate note work
Skill.
To achieve the above object, the present invention provides following technical solutions：
A kind of low-friction coefficient Fluorine-lined plate note technique,
Step 1：Dispensing,
Modified Teflon includes following weight parts composition：
Polytetrafluoroethylene (PTFE)：100 parts
N- tertbutyloxycarbonyl -4- piperidones：5 parts
2- methyl -4- ketone group-N- t-butoxycarbonylpiperidins：2 parts
Tetramethylene ethylene glycol list vinethene：3 parts
Step 2：The preparation of modified graphene
The modified graphene includes following mass parts compositions：
Graphene：100 parts
(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 A：By the graphene oxide of graphene oxidation system；
Step B：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyls methyl dimethoxysilane,
Seven Flutamide of N- methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are dispersed in dispersion liquid；
Step C：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified graphite
Alkene；
Step 3：The preparation of modified Teflon；
On the basis of 100 parts of polytetrafluoroethylene (PTFE), 5 parts of modified graphenes are added, are mixed, twin-screw is added to after completing mixing
In extruder, it is extruded into modified polytetrafluoroethylparticles particles；
Modified polytetrafluoroethylparticles particles are molded into the plank of fitting container or pipeline；
Step 4：Plank is bonded to the inner wall of container or pipeline by adhesive；
Step 5：PFA welding rods are put between gap between plank and plank；
Step 6：It is welded by PFA welding rods and welds together plank and plank.
As a further improvement on the present invention：
The adhesive is silicone pressure sensitive type adhesive, the silicone pressure sensitive type adhesive.
As a further improvement on the present invention：
The step A is to be added in container in the excessive concentrated sulfuric acid, is controlled temperature at 4 DEG C by ice bath, 100 are added later
Purpose graphene, later in the NaNO that graphene half quality is added3, it is slowly added to the height of three times graphene quality later
Potassium manganate is added and completes, and is stirred under condition of ice bath 90 minutes, changes ice bath into water-bath later, control temperature is at 35 DEG C, reaction
30 minutes, the deionized water of double concentrated sulfuric acid volume is added later, is heated to 80 DEG C, is slowly added to the dioxygen of 5% concentration later
Water washs in centrifuge after reaction solution is in gold, until after BaCl2 is generated without white precipitate, dries and obtain at 50 DEG C
Graphene oxide.
As a further improvement on the present invention：
It is 1 that dispersion liquid in the step B, which is mass ratio,:1 deionized water and the mixture of ethyl alcohol.
As a further improvement on the present invention：
The step C is that graphene oxide slurry is added in solvent liquid, and dispersion graphite oxide is carried out within 0.5 ~ 2 hour by ultrasound
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 micro-strip
4h is reacted under part, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying obtains modified graphene.
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；
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 present invention, main body is polytetrafluoroethylene (PTFE), and N- tertbutyloxycarbonyl -4- piperidines is added in polytetrafluoroethylene (PTFE)
Ketone, 2- methyl -4- ketone group-N- t-butoxycarbonylpiperidins, tetramethylene ethylene glycol list vinethene, can participate in polytetrafluoro with dispensing
In the polymerization of ethylene, to change the intermolecular structure of polytetrafluoroethylene (PTFE) so that the table of the polytetrafluoroethylene (PTFE) molecule of big segment
Face group changes so that inert polytetrafluoroethylene (PTFE) have the characteristics that with the preferable peel strength of metal, most attach most importance to
What is wanted is the friction coefficient that can reduce polytetrafluoro a lower surface, is especially added after changing lower graphene, through the invention
The modified Teflon of preparation can further increase the friction coefficient of integral material, change by the way that modified graphene is added
Pass through (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyl methyl dimethoxy oxygroup silicon in property graphene
The addition of alkane, N- methyl-N- trimethyls silicon substrate seven Flutamides, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane, Neng Gouzeng
While the blended characteristic of strong modified graphene and polytetrafluoroethylene (PTFE), synergistic effect is generated, for rubbing for polytetrafluoroethylene material
Coefficient is wiped, the modified graphene of the active group in surface, on the one hand its surface area is big, is easy to be adsorbed on other materials, together
When with added with N- tertbutyloxycarbonyl -4- piperidones, 2- methyl -4- ketone group-N- t-butoxycarbonylpiperidins, tetramethylene ethylene glycol
The polytetrafluoroethylene (PTFE) of single vinethene can form tridimensional network so that polytetrafluoroethylene (PTFE) has certain elasticity, can play
Better seal effect, and it is maintained to lower friction coefficient on the whole in acid and alkalinity condition for a long time.
In the present invention, also preferential to select double fluorine (fluorosulfonyl) acetic acid esters of trimethylsilyl as dispersant, then
While playing the role of dispersant, additionally it is possible to rise and further increase integral material under acid-base condition still with compared with low friction
The effect of coefficient.
Specific implementation mode
Embodiment one：
A kind of low-friction coefficient Fluorine-lined plate note technique,
Step 1：Dispensing,
Modified Teflon includes following weight parts composition：
Polytetrafluoroethylene (PTFE)：100 parts
N- tertbutyloxycarbonyl -4- piperidones：5 parts
2- methyl -4- ketone group-N- t-butoxycarbonylpiperidins：2 parts
Tetramethylene ethylene glycol list vinethene：3 parts
Step 2：The preparation of modified graphene
The modified graphene includes following mass parts compositions：
Graphene：100 parts
(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 A：By the graphene oxide of graphene oxidation system；
Step B：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyls methyl dimethoxysilane,
Seven Flutamide of N- methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are dispersed in dispersion liquid；
Step C：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified graphite
Alkene；
Step 3：The preparation of modified Teflon；
On the basis of 100 parts of polytetrafluoroethylene (PTFE), 5 parts of modified graphenes are added, are mixed, twin-screw is added to after completing mixing
In extruder, it is extruded into modified polytetrafluoroethylparticles particles；
Modified polytetrafluoroethylparticles particles are molded into the plank of fitting container or pipeline；
Step 4：Plank is bonded to the inner wall of container or pipeline by adhesive；
Step 5：PFA welding rods are put between gap between plank and plank；
Step 6：It is welded by PFA welding rods and welds together plank and plank.
The adhesive is silicone pressure sensitive type adhesive, the silicone pressure sensitive type adhesive.
The step A is to be added in container in the excessive concentrated sulfuric acid, is controlled temperature 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.
It is 1 that dispersion liquid in the step B, which is mass ratio,:1 deionized water and the mixture of ethyl alcohol.
The step C is that graphene oxide slurry is added in solvent liquid, and dispersion oxidation is carried out within 0.5 ~ 2 hour by ultrasound
Graphene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while micro-
4h is reacted under the conditions of wave, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying obtains modified stone
Black alkene.
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 and and four
Vinyl fluoride particle is thoroughly mixed.
Embodiment two：
A kind of low-friction coefficient Fluorine-lined plate note technique,
Step 1：Dispensing,
Modified Teflon includes following weight parts composition：
Polytetrafluoroethylene (PTFE)：100 parts
N- tertbutyloxycarbonyl -4- piperidones：5 parts
2- methyl -4- ketone group-N- t-butoxycarbonylpiperidins：2 parts
Tetramethylene ethylene glycol list vinethene：3 parts
Step 2：The preparation of modified graphene
The modified graphene includes following mass parts compositions：
Graphene：100 parts
(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 A：By the graphene oxide of graphene oxidation system；
Step B：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyls methyl dimethoxysilane,
Seven Flutamide of N- methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are dispersed in dispersion liquid；
Step C：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified graphite
Alkene；
Step 3：The preparation of modified Teflon；
On the basis of 100 parts of polytetrafluoroethylene (PTFE), 5 parts of modified graphenes are added, are mixed, twin-screw is added to after completing mixing
In extruder, it is extruded into modified polytetrafluoroethylparticles particles；
Modified polytetrafluoroethylparticles particles are molded into the plank of fitting container or pipeline；
Step 4：Plank is bonded to the inner wall of container or pipeline by adhesive；
Step 5：PFA welding rods are put between gap between plank and plank；
Step 6：It is welded by PFA welding rods and welds together plank and plank.
The adhesive is silicone pressure sensitive type adhesive, the silicone pressure sensitive type adhesive.
The step A is to be added in container in the excessive concentrated sulfuric acid, is controlled temperature 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.
It is 1 that dispersion liquid in the step B, which is mass ratio,:1 deionized water and the mixture of ethyl alcohol.
The step C is that graphene oxide slurry is added in solvent liquid, and dispersion oxidation is carried out within 0.5 ~ 2 hour by ultrasound
Graphene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while micro-
4h is reacted under the conditions of wave, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying obtains modified stone
Black alkene.
Comparative example one：
Polytetrafluoroethylene (PTFE) is directly selected, plank is prepared into, is bonded in container or pipeline by silicone pressure sensitive type adhesive
Wall is welded together by PFA welding rods later.
Comparative example two：
A kind of low-friction coefficient Fluorine-lined plate note technique,
Step 1：Dispensing,
Modified Teflon includes following weight parts composition：
Polytetrafluoroethylene (PTFE)：100 parts
N- tertbutyloxycarbonyl -4- piperidones：5 parts
Tetramethylene ethylene glycol list vinethene：3 parts
Step 2：The preparation of modified graphene
The modified graphene includes following mass parts compositions：
Graphene：100 parts
(N, N- dimethyl -3- aminopropyls) trimethoxy silane：2 parts
Seven Flutamide of N- methyl-N- trimethyls silicon substrate：1 part
The preparation method of the modified graphene is：
Step A：By the graphene oxide of graphene oxidation system；
Step B：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, seven Flutamide of N- methyl-N- trimethyls silicon substrate point
It is dispersed in dispersion liquid；
Step C：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified graphite
Alkene；
Step 3：The preparation of modified Teflon；
On the basis of 100 parts of polytetrafluoroethylene (PTFE), 5 parts of modified graphenes are added, are mixed, twin-screw is added to after completing mixing
In extruder, it is extruded into modified polytetrafluoroethylparticles particles；
Modified polytetrafluoroethylparticles particles are molded into the plank of fitting container or pipeline；
Step 4：Plank is bonded to the inner wall of container or pipeline by adhesive；
Step 5：PFA welding rods are put between gap between plank and plank；
Step 6：It is welded by PFA welding rods and welds together plank and plank.
The adhesive is silicone pressure sensitive type adhesive, the silicone pressure sensitive type adhesive.
The step A is to be added in container in the excessive concentrated sulfuric acid, is controlled temperature 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.
It is 1 that dispersion liquid in the step B, which is mass ratio,:1 deionized water and the mixture of ethyl alcohol.
The step C is that graphene oxide slurry is added in solvent liquid, and dispersion oxidation is carried out within 0.5 ~ 2 hour by ultrasound
Graphene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while micro-
4h is reacted under the conditions of wave, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying obtains modified stone
Black alkene.
Comparative example three：
A kind of low-friction coefficient Fluorine-lined plate note technique,
Step 1：Dispensing,
Modified Teflon includes following weight parts composition：
Polytetrafluoroethylene (PTFE)：100 parts
2- methyl -4- ketone group-N- t-butoxycarbonylpiperidins：2 parts
Step 2：The preparation of modified graphene
The modified graphene includes following mass parts compositions：
Graphene：100 parts
3,3,3- trifluoro propyl methyl dimethoxysilanes：1 part
3- (isobutene acyl-oxygen) propyl trimethoxy silicane：5 parts；
The preparation method of the modified graphene is：
Step A：By the graphene oxide of graphene oxidation system；
Step B：3,3,3- trifluoro propyls methyl dimethoxysilane, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are disperseed
In dispersion liquid；
Step C：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified graphite
Alkene；
Step 3：The preparation of modified Teflon；
On the basis of 100 parts of polytetrafluoroethylene (PTFE), 5 parts of modified graphenes are added, are mixed, twin-screw is added to after completing mixing
In extruder, it is extruded into modified polytetrafluoroethylparticles particles；
Modified polytetrafluoroethylparticles particles are molded into the plank of fitting container or pipeline；
Step 4：Plank is bonded to the inner wall of container or pipeline by adhesive；
Step 5：PFA welding rods are put between gap between plank and plank；
Step 6：It is welded by PFA welding rods and welds together plank and plank.
The adhesive is silicone pressure sensitive type adhesive, the silicone pressure sensitive type adhesive.
The step A is to be added in container in the excessive concentrated sulfuric acid, is controlled temperature 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.
It is 1 that dispersion liquid in the step B, which is mass ratio,:1 deionized water and the mixture of ethyl alcohol.
The step C is that graphene oxide slurry is added in solvent liquid, and dispersion oxidation is carried out within 0.5 ~ 2 hour by ultrasound
Graphene solution, the dispersion liquid being slowly added to later in step 2, later under nitrogen protection in temperature control at 90 DEG C, while micro-
4h is reacted under the conditions of wave, paste is passed through to absolute ethyl alcohol and deionized water washing successively later three times, drying obtains modified stone
Black alkene.
It is 10cm, internal diameter of the pipeline 13cm that liner diameters, which are made, in degree ratio and embodiment, detects its peel strength later and rubs
Wipe coefficient.In addition to this, the tube body for being entirely lined with modified Teflon is flowed in the sodium hydrate aqueous solution that pH is 8.5
It crosses, flow control flows 48 hours in 3m/s, persistent loop, detects its peel strength and friction coefficient later；It in addition will be entire
The tube body for being lined with modified Teflon flows through in the aqueous hydrochloric acid solution that pH is 6.5, and flow control is in 3m/s, persistent loop stream
It is 48 hours dynamic, its peel strength and friction coefficient are detected later.
In the present invention, main body is polytetrafluoroethylene (PTFE), and N- tertbutyloxycarbonyl -4- piperidones, 2- are added in polytetrafluoroethylene (PTFE)
Methyl -4- ketone group-N- t-butoxycarbonylpiperidins, tetramethylene ethylene glycol list vinethene, can participate in polytetrafluoroethylene (PTFE) with dispensing
Polymerization in, to change the intermolecular structure of polytetrafluoroethylene (PTFE) so that the surface base of the polytetrafluoroethylene (PTFE) molecule of big segment
Group change so that inert polytetrafluoroethylene (PTFE) have the characteristics that with the preferable peel strength of metal, it is mostly important
It is the friction coefficient that can reduce polytetrafluoro a lower surface, especially adds after changing lower graphene, prepare through the invention
Modified Teflon the friction coefficient of integral material can be further increased, in modified stone by the way that modified graphene is added
Pass through (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyls methyl dimethoxysilane, N- in black alkene
The addition of seven Flutamide of methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane, can enhance modification
While the blended characteristic of graphene and polytetrafluoroethylene (PTFE), synergistic effect is generated, for the friction coefficient of polytetrafluoroethylene material,
The modified graphene of the active group in surface, on the one hand its surface area it is big, be easy to be adsorbed on other materials, at the same with addition
There are N- tertbutyloxycarbonyl -4- piperidones, 2- methyl -4- ketone group-N- t-butoxycarbonylpiperidins, tetramethylene ethylene glycol list vinethene
Polytetrafluoroethylene (PTFE) can form tridimensional network so that polytetrafluoroethylene (PTFE) has certain elasticity, can play preferably close
Effect is sealed, and is maintained to lower friction coefficient on the whole in acid and alkalinity condition for a long time.
In the present invention, also preferential to select double fluorine (fluorosulfonyl) acetic acid esters of trimethylsilyl as dispersant, then
While playing the role of dispersant, additionally it is possible to rise and further increase integral material under acid-base condition still with compared with low friction
The effect of coefficient.
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 (6)
1. a kind of low-friction coefficient Fluorine-lined plate note technique, it is characterised in that：
Step 1：Dispensing,
Modified Teflon includes following weight parts composition：
Polytetrafluoroethylene (PTFE)：100 parts
N- tertbutyloxycarbonyl -4- piperidones：5 parts
2- methyl -4- ketone group-N- t-butoxycarbonylpiperidins：2 parts
Tetramethylene ethylene glycol list vinethene：3 parts
Step 2：The preparation of modified graphene
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 A：By the graphene oxide of graphene oxidation system；
Step B：By (N, N- dimethyl -3- aminopropyls) trimethoxy silane, 3,3,3- trifluoro propyls methyl dimethoxysilane,
Seven Flutamide of N- methyl-N- trimethyls silicon substrate, 3- (isobutene acyl-oxygen) propyl trimethoxy silicane are dispersed in dispersion liquid；
Step C：Graphene oxide is added in the dispersion liquid obtained in step 2 to be uniformly mixed, reacts to obtain modified graphite
Alkene；
Step 3：The preparation of modified Teflon；
On the basis of 100 parts of polytetrafluoroethylene (PTFE), 5 parts of modified graphenes are added, are mixed, twin-screw is added to after completing mixing
In extruder, it is extruded into modified polytetrafluoroethylparticles particles；
Modified polytetrafluoroethylparticles particles are molded into the plank of fitting container or pipeline；
Step 4：Plank is bonded to the inner wall of container or pipeline by adhesive；
Step 5：PFA welding rods are put between gap between plank and plank；
Step 6：It is welded by PFA welding rods and welds together plank and plank.
2. a kind of low-friction coefficient Fluorine-lined plate note technique according to claim 1, it is characterised in that：
The adhesive is silicone pressure sensitive type adhesive, the silicone pressure sensitive type adhesive.
3. a kind of low-friction coefficient Fluorine-lined plate note technique according to claim 2, it is characterised in that：
The step A is to be added in container in the excessive concentrated sulfuric acid, is controlled temperature at 4 DEG C by ice bath, 100 are added later
Purpose graphene, later in the NaNO that graphene half quality is added3, it is slowly added to the height of three times graphene quality later
Potassium manganate is added and completes, and is stirred under condition of ice bath 90 minutes, changes ice bath into water-bath later, control temperature is at 35 DEG C, reaction
30 minutes, the deionized water of double concentrated sulfuric acid volume is added later, is heated to 80 DEG C, is slowly added to the dioxygen of 5% concentration later
Water washs in centrifuge after reaction solution is in gold, until after BaCl2 is generated without white precipitate, dries and obtain at 50 DEG C
Graphene oxide.
4. a kind of low-friction coefficient Fluorine-lined plate note technique according to claim 3, it is characterised in that：In the step B
Dispersion liquid is that mass ratio is 1:1 deionized water and the mixture of ethyl alcohol.
5. a kind of low-friction coefficient Fluorine-lined plate note technique according to claim 4, it is characterised in that：The step C 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.
6. a kind of low-friction coefficient Fluorine-lined plate note technique according to claim 4, it is characterised in that：Further include having dispersant
10 parts, 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 and and four
Vinyl fluoride particle is thoroughly mixed.
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| CN102206390A (en) * | 2011-01-21 | 2011-10-05 | 浙江吉利汽车研究院有限公司 | Modification method for reinforcing polytetrafluoroethylene material through ekonol and aramid fiber |
| CN104890161A (en) * | 2015-05-25 | 2015-09-09 | 巨化集团技术中心 | Anticorrosion demoulding powder combination and preparation method thereof |
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| CN104890161A (en) * | 2015-05-25 | 2015-09-09 | 巨化集团技术中心 | Anticorrosion demoulding powder combination and preparation method thereof |
| CN106280150A (en) * | 2016-08-16 | 2017-01-04 | 浙江特塑龙化工设备有限公司 | A kind of pipeline of lining teflon |
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