CN108842161B - It is used to prepare the production equipment and its application method of the membrane electrode assembly of ozone - Google Patents
It is used to prepare the production equipment and its application method of the membrane electrode assembly of ozone Download PDFInfo
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- CN108842161B CN108842161B CN201810532970.4A CN201810532970A CN108842161B CN 108842161 B CN108842161 B CN 108842161B CN 201810532970 A CN201810532970 A CN 201810532970A CN 108842161 B CN108842161 B CN 108842161B
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/13—Ozone
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
- C25B11/095—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds at least one of the compounds being organic
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The present invention relates to ozone preparation technical fields, and in particular to a kind of production equipment and its application method of the membrane electrode assembly for being used to prepare ozone.The production equipment include the feeding roller that sets gradually to, leaching material device, the first extrusion forming device, annealing device, fiber feeding device, the second extrusion forming device and winding device.The membrane electrode assembly of the big breadth of large area can be prepared using the equipment, membrane electrode assembly obtained improves from structure and in preparation process, significantly improves ozone generating speed rate, reduce use cost, extend service life, remarkable in economical benefits.
Description
Technical field
The present invention relates to ozone preparation technical fields, and in particular to a kind of production for the membrane electrode assembly for being used to prepare ozone
Equipment and its application method.
Background technique
Ozone (O3) it is used as a kind of strong oxidizer, because its oxidability is strong, there is stronger disinfection effect, sterilization disappears
Oxygen is generated after poison, will not generate secondary pollution, therefore be increasingly taken seriously in fields such as environmental protections.Currently, ozone is
It is each to be widely applied to drinking water treatment, medicinal water processing, municipal sewage treatment, food sterilization sterilization, air cleaning etc.
Aspect.However, being not easy to store since ozone is easy selfdecomposition, therefore when using ozone, it is common that now-making-now-using.Currently, people
It mainly includes ultraviolet irradiation, radiochemical method, dielectric barrier discharge method and low tension solution that work, which produces ozoniferous method,
Deng.In these production methods, radiochemical method needs to utilize radioactive source, at high cost, and safety is poor.Ultraviolet irradiation is
Dry oxygen is irradiated using ultraviolet light, a part of oxygen molecule is dissociated into oxygen atom, and then oxygen atom occurs with oxygen molecule again
It reacts and forms ozone.However, ultraviolet irradiation energy consumption is high and the ozone concentration that generates is lower, it is unfavorable for being mass produced
The concentration that ozone, still more ozone generally require to reach when in use certain just has preferable sterilization effect.Medium resistance
Gear electric discharge is that corona is generated by alternation high voltage electric field, has free high energy electron in corona zone, when carrier of oxygen is put by corona
Oxygen molecule can be dissociated into oxygen atom under the bombardment of high-speed electron flow when electric area, and then oxygen atom is again with oxygen molecule through touching
It hits and forms ozone molecule.However, if selecting raw material for air, can be produced when preparing ozone using dielectric barrier discharge method
The raw nitrogen oxides being harmful to the human body, pollutes environment, and ozone concentration obtained is relatively low.It, can be big if being selected as purity oxygen
It is big to improve production cost, it is unfavorable for promoting the use of.And preparing ozone by low-voltage electrolysis method, it is to be electrolysed oxygen-containing electrolysis using DC power supply
Matter.Wherein, low-voltage electrolysis water energy enough obtains higher ozone concentration, and will not generate the harmful substances such as nitrogen oxides.Meanwhile institute
The voltage of the DC power supply of use can be lied prostrate down to 3-5, safe and practical, convenient for promoting.
Currently, low-voltage electrolysis water is prepared in the method for ozone, mainly using amberplex and cathode and anode catalyst film
Piece forms membrane electrode assembly, generates ozone using the membrane electrode assembly electrolysis water.In the prior art, membrane electrode assembly is prepared
In cathode and anode catalyst diaphragm when, common method is mull technique, ion-exchange and electrochemical deposition method.
Mull technique is exactly that will be mixed with the anode and cathode catalysed particulate of binder in the case where adding mechanical force outside, is bonded to ion
On exchange membrane.Ion-exchange is to deposit one layer of electrode catalyst particle in the two sides of amberplex, but this method exchanges
Obtained particle is coarseer, and the amount of precipitation of electrode catalyst is not easily controlled.Electrochemical deposition method is to use electrochemistry also
Metal salt solution electroreduction is deposited to film surface, but this method higher cost by former method, and the equipment used is expensive.This
Outside, these methods are inadequate with fastness of the catalyst on amberplex, specific surface area is smaller, are unfavorable for improving the production of ozone
Raw rate.
In addition, preparing the complex process of membrane electrode assembly in the prior art, components are more, and bolt etc. is needed to assemble, effect
Rate is low.Meanwhile when being assembled using bolt etc., iron is commonly used due to bolt and is made, and ozone has strong oxidizing property, can generate to bolt
Certain corrosiveness.Therefore, how to simplify the production technology of membrane electrode assembly, improve anode-catalyzed film and cathod catalyst film
The generation rate of contact fastness, raising ozone with amberplex improves production efficiency, is that those skilled in the art need to solve
The big problem of one certainly.In addition, producing membrane electrode assembly at present, it is small lot miniaturization production, cannot gives birth in batches on a large scale
It produces, this also constrains industry development.Meanwhile most ozone generators are the devices of miniaturization, when needing more ozone, often
It is realized by the Ozone generator module of multiple miniaturizations in parallel.The membrane electrode assembly produced on the market at present is smaller, cannot
It is directly used in large-scale ozone generator.Therefore, the membrane electrode assembly of the big breadth of large area how is simply and easily produced,
It is those skilled in the art's problem in need of consideration.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of productions of membrane electrode assembly for ozone generator
Equipment and its application method.Using membrane electrode assembly made from the equipment, the fastness of catalyst can be improved, increase the ratio table of film
Area improves efficiency of ozone generation and reduces the use of the components such as bolt, reduces costs, improve membrane electrode assembly
Service life.Meanwhile the membrane electrode assembly with larger area and breadth can be made in the equipment, can satisfy large-scale ozone
The use demand of device.
To achieve the above object, the present invention the following technical schemes are provided:
A kind of production equipment for the membrane electrode assembly being used to prepare ozone, including the feeding roller that sets gradually to, leaching material dress
It sets, the first extrusion forming device, annealing device, fiber feeding device, the second extrusion forming device and winding device；Leaching material dress
Set including guide roller, leaching material roller, the first guide reel to leaching material pond；First extrusion forming device by multiple compression rollers to forming,
Including the first compression roller for setting gradually to, the second compression roller to, third compression roller to, the 4th compression roller to, the 5th compression roller
To and the 6th compression roller pair；Fiber feeding device include the first feeding device set gradually, the 7th compression roller to, reversing roller,
8th compression roller to and the second feeding device.
Preferably, the second extrusion forming device is the 9th compression roller pair.Certainly, the second extrusion forming device is also possible to more
A compression roller pair.
Preferably, to being located above the both sides of the edge of leaching material pond, leaching material roller, which is located at, is led for guide roller and the first guide reel
To between roller and the first guide reel pair, and it is located inside leaching material pond；Exist between two guide reels of the first guide reel pair certain
Spacing, and upper guide reel is plain roller, the surface of lower guide reel has tiny arcuation protrusion.Draw in this way, being conducive to control
Spacing between deflector roll, and perfluorinated sulfonic acid ion exchange membrane can be made after device is expected in leaching, lower surface retains one on it
Determine the ptfe emulsion of thickness.Tiny arcuation protrusion is arranged in the surface of lower guide reel, can be in smoothly guidance perfluorinated sulfonic acid
Certain thickness ptfe emulsion can also be retained in the lower surface of perfluorinated sulfonic acid ion exchange membrane while amberplex.
Equipped with the ptfe emulsion for being uniformly mixed with platinum powder in leaching material pond.In perfluorinated sulfonic acid ion exchange membrane by soaking
After material pond, the ptfe emulsion containing platinum powder is speckled in the both side surface of perfluorinated sulfonic acid ion exchange membrane, later again
Under the action of one extrusion forming device, fixed anode catalyst platinum and cathod catalyst platinum.
Preferably, third compression roller to and the 4th compression roller to for hot-rolling, the 5th compression roller to and the 6th compression roller to for
Chilling roller.In this way, can make by the first compression roller to and the second compression roller preliminary perfluorosulfonic acid ion after extruding is handed over
Film is changed, by the extruding of hot-rolling, thus, it is possible to remove the solvent used when ptfe emulsion is prepared in part, later again by cold
Roller squeezes, this is conducive in perfluorinated sulfonic acid ion exchange membrane surface fixed anode catalyst platinum powder and cathod catalyst platinum powder.The
One compression roller to and the second compression roller to heating element and temperature control equipment is above provided with, allow its temperature according to practical need
It is adjusted.
First feeding device is for being added the polytetrafluoroethylene fibre containing anode catalyst；Second feeding device is for adding
Enter the polytetrafluoroethylene fibre containing cathod catalyst.Meanwhile it being provided between fiber feeding device and the 6th compression roller pair
Annealing device, in this way setting can make by the first extrusion forming device perfluorinated sulfonic acid ion exchange membrane surface after extruding
Polytetrafluoroethylene (PTFE) softening, it is poly- convenient for the polytetrafluoroethylene fibre of the anode catalyst of subsequent addition and containing cathod catalyst
Tetrafluoroethylene fiber can under the action of compression roller pair, successfully with the polytetrafluoroethylene (PTFE) on perfluorinated sulfonic acid ion exchange membrane surface
It is bonded together.Why subsequent polytetrafluoroethylene fibre of the addition containing catalyst, this is to increase membrane electrode assembly
Specific surface area accelerates reaction rate and efficiency, while also further improving catalyst on perfluorinated sulfonic acid ion exchange membrane surface
Fastness, keep it not easily to fall off in use.Preferably, the anode catalyst in polytetrafluoroethylene fibre is platinum powder, when
So or other anode catalysts；Cathod catalyst in polytetrafluoroethylene fibre is platinum powder, naturally it is also possible to select it
Its cathod catalyst.
First compression roller to, the second compression roller to, third compression roller to, the 4th compression roller to, the 5th compression roller to and
Six compression rollers can also be located at different horizontal planes to can be set in same level.
In the present invention, the linear resonance surface velocity of all rollers and winding device is all the same, so that perfluorosulfonic acid ion exchanges
Film will not stretch elongated.
Using the method for above equipment production membrane electrode assembly, include the following steps:
Step (1) raw material preparation: preparing ptfe emulsion, while adding platinum powder in ptfe emulsion,
It stirs evenly, and the ptfe emulsion containing platinum powder is added in leaching material pond, and make the polytetrafluoroethylene (PTFE) containing platinum powder
Lotion floods leaching material roller；The polytetrafluoroethylene fibre containing anode catalyst is prepared, is added in the first feeding device, it is spare；
The polytetrafluoroethylene fibre containing cathod catalyst is prepared, is added in the second feeding device, it is spare；
Step (2) leaching material: perfluorinated sulfonic acid ion exchange membrane expects device to leaching is fed by feeding roller, and successively by leading
To roller, leaching material roller and the first guide reel pair；Perfluorinated sulfonic acid ion exchange membrane passes through in leaching material pond and hands over perfluorosulfonic acid ion
The upper and lower surface for changing film speckles with the ptfe emulsion containing platinum powder；
Step (3) extrusion forming: the perfluorinated sulfonic acid ion exchange membrane for being stained with platinum powder that step (2) is obtained passes through first
Multiple compression rollers pair of extrusion forming device, are repeatedly squeezed, and the semi-finished product of predetermined thickness are obtained；
Step (4) heat treatment: the semi-finished product that step (3) obtains are heat-treated, the polytetrafluoroethyl-ne of surface of semi-finished is made
Alkene softening；
Step (5) fiber is added: using the first feeding device, uniform layer overlay contains sun on the upper surface of semi-finished product
The polytetrafluoroethylene fibre of electrode catalyst passes through the squeezing action of the 7th compression roller pair later, makes poly- containing anode catalyst
Tetrafluoroethylene fiber is tentatively fixed on the upper surface of semi-finished product；Then it is commutated by reversing roller, makes the upper surfaces of semi-finished product downward,
Following table is face-up；Then by the 8th compression roller to rear, to being not added with the polytetrafluoroethylene fibre containing anode catalyst
The another side of semi-finished product contains the polytetrafluoroethylene fibre of cathod catalyst using the uniform layer overlay of the second feeding device；
Step (6) extrusion forming again: it is squeezed again using the product that the second extrusion forming device obtains step (5)
It is molded, keep the polytetrafluoroethylene fibre containing anode catalyst and the polytetrafluoroethylene fibre containing cathod catalyst secured
Ground is fixed, and membrane electrode assembly is obtained；
Step (7) is coiled: using winding device that membrane electrode assembly made from step (6) is coiled.
Preferably, production equipment further includes cutting device, and this method further includes step (8) dicing process, utilizes cutting machine
Membrane electrode assembly obtained is cut, the membrane electrode assembly for the size that meets the requirements is made.
Preferably, the first feeding device and the second feeding device are selected as electrostatic spinning apparatus, are filled by electrostatic spinning
It sets and prepares the polytetrafluoroethylene fibre containing anode catalyst and the polytetrafluoroethylene fibre containing cathod catalyst respectively, directly
Receive the both side surface in semi-finished product.The fiber prepared by electrostatic spinning apparatus, can obtain thinner fibre diameter, favorably
In the specific surface area for improving final finished, to improve ozone production efficiency.Certainly, fiber is being produced using electrostatic spinning apparatus
When, some components need to be adaptively set, such as receive pole plate, HV generator, these use the prior art, do not go to live in the household of one's in-laws on getting married
It states, key herein is specific needs according to the present invention, suitable electrostatic spinning apparatus is set in place, thus
Improve the performance of final finished.Certainly, when selection electrostatic spinning apparatus prepares the polytetrafluoroethylene fibre containing anode catalyst
When with polytetrafluoroethylene fibre containing cathod catalyst, the method the step of when (1) raw material preparation, preparation is urged containing anode
The polytetrafluoroethylene fibre of agent is added in the first feeding device, spare, and polytetrafluoro of the preparation containing cathod catalyst
Vinyl fiber is added in the second feeding device, spare, replaces with the polytetrafluoroethylene (PTFE) spinning prepared respectively containing anode catalyst
Silk liquid and the polytetrafluoroethylene (PTFE) spinning solution containing cathod catalyst, it is spare.Further, it is passed through in perfluorinated sulfonic acid ion exchange membrane
It crosses before the first feeding device, plasma treatment can also be carried out, so that the surface of semi-finished product is generated pit, in favor of electrostatic spinning
When fiber attachment；Or the 6th the surface of compression roller pair there is tiny arcuation protrusion, also the surface of semi-finished product can thus produced
Raw tiny pit, conducive to the attachment of fiber when electrostatic spinning.
Preferably, poly- containing cathod catalyst in polytetrafluoroethylene fibre of the preparation containing anode catalyst and preparation
When tetrafluoroethylene fiber, added with pore former, so as to the polytetrafluoroethylene fibre containing anode catalyst and contain cathod catalyst
Polytetrafluoroethylene fibre surface and inside have hole or pit, this is capable of increasing specific surface area, so that anti-when subsequent production ozone
Rate is answered to be improved.
Preferably, the width of perfluorinated sulfonic acid ion exchange membrane used in this method is in 2-150cm, more preferably 10-
100cm, further preferably 50-80cm.Using wider perfluorinated sulfonic acid ion exchange membrane, and match feeding for suitable width
Enter roller, compression roller etc., in high volume expeditiously can produce membrane electrode assembly, while also providing accessory for large-scale ozone generator
Support.Certainly, the width of perfluorinated sulfonic acid ion exchange membrane can also consider specific actual needs, production and processing difficulty and warp
Select bigger after the factors such as Ji benefit, it is not limited here.
Beneficial effects of the present invention:
The present invention provides a kind of production equipment of membrane electrode assembly for being used to prepare ozone, film made from the production equipment
Electrode assembly be it is integrally formed, assembly cost can be reduced, also can be improved the fastness of catalyst, increase the specific surface of film
Product improves efficiency of ozone generation and reduces the use of the components such as bolt, reduces costs, improve making for membrane electrode assembly
Use the service life.Meanwhile the membrane electrode assembly with larger area and breadth can be made in the equipment, can satisfy large-scale ozone generator
Use demand.
When preparing membrane electrode assembly using the method for the present invention, by immersion system, enable to close to perfluorinated sulfonic acid
The two sides of amberplex are respectively provided with the platinum powder of higher concentration；And use the first feeding device and the second feeding device half at
The polytetrafluoroethylene fibre being added after product due to being limited to polytetrafluoroethylene (PTFE) into fine difficulty, and makes polytetrafluoroethylene fibre
In anode catalyst and the content of cathod catalyst will not be too high.As a result, using membrane electrode assembly made from this method, leaning on
The two sides catalyst concn with higher of nearly perfluorinated sulfonic acid ion exchange membrane, and have in outmost two sides relatively low
Catalyst concn so can make full use of catalyst, and under the protection of outmost fiber, make high catalyst concentration area
The catalyst in domain firmly fixes, not easily to fall off in use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the production equipment of ozone generator membrane electrode assembly of the present invention.
Appended drawing reference: 1, feeding roller pair；2, guide roller；3, leaching material roller；4, the first guide reel pair；5, material pond is soaked；9, first
Compression roller pair；10, the second compression roller pair；11, third compression roller pair；12, the 4th compression roller pair；13, the 5th compression roller pair；14,
6th compression roller pair；15, annealing device；16, the first feeding device；17, the 7th compression roller pair；18, reversing roller；19, the 8th
Compression roller pair；20, the second feeding device；21, the 9th compression roller pair；22, winding device.
Specific embodiment
Below in conjunction with specific embodiments and drawings 1, the present invention is described in detail.
As shown in Figure 1, a kind of production equipment for the membrane electrode assembly for being used to prepare ozone, including the feeding roller set gradually
To 1, leaching material device, the first extrusion forming device, annealing device 15, fiber feeding device, the second extrusion forming device and volume
Winding apparatus 22；Leaching material device includes guide roller 2, leaching material roller 3, the first guide reel to 4 and leaching material pond 5；First extrusion forming device
By multiple compression rollers to forming, including the first compression roller for setting gradually to the 9, second compression roller to 10, third compression roller to 11,
4th compression roller to the 12, the 5th compression roller to 13 and the 6th compression roller to 14；Fiber feeding device includes first set gradually
Feeding device 16, the 7th compression roller are to 17, reversing roller 18, the 8th compression roller to 19 and second feeding device 20.
Preferably, the second extrusion forming device is the 9th compression roller to 21.Certainly, the second extrusion forming device is also possible to
Multiple compression rollers pair.
Preferably, guide roller 2 and the first guide reel are located above the both sides of the edge of leaching material pond 5 to 4,3, roller, leaching material
Between guide roller 2 and the first guide reel are to 4, and it is located inside leaching material pond 5；First guide reel is between 4 two guide reels
There are a fixed spacings, and upper guide reel is plain roller, and the surface of lower guide reel has tiny arcuation protrusion.In this way, advantageous
Spacing between control guide reel, and perfluorinated sulfonic acid ion exchange membrane can be made after device is expected in leaching, lower surface on it
Retain certain thickness ptfe emulsion.Tiny arcuation protrusion is arranged in the surface of lower guide reel, can smoothly guide
Certain thickness polytetrafluoro can also be retained in the lower surface of perfluorinated sulfonic acid ion exchange membrane while perfluorinated sulfonic acid ion exchange membrane
Vac emulsion.
Equipped with the ptfe emulsion for being uniformly mixed with platinum powder in leaching material pond 5.Pass through in perfluorinated sulfonic acid ion exchange membrane
After soaking material pond 5, the ptfe emulsion containing platinum powder is speckled in the both side surface of perfluorinated sulfonic acid ion exchange membrane, is existed again later
Under the action of first extrusion forming device, fixed anode catalyst platinum and cathod catalyst platinum.
Preferably, third compression roller to 11 and the 4th compression roller to 12 be hot-rolling, the 5th compression roller to 13 and the 6th squeeze
Roller is chilling roller to 14.In this way, can make by the first compression roller to 9 and second compression roller to 10 preliminary perfluors after extruding
Sulfonic acid ion exchange membrane, by the extruding of hot-rolling, thus, it is possible to remove the solvent used when ptfe emulsion is prepared in part,
It is squeezed again by chilling roller later, this is conducive in perfluorinated sulfonic acid ion exchange membrane surface fixed anode catalyst platinum powder and cathode catalysis
Agent platinum powder.First compression roller to 9 and second compression roller to heating element and temperature control equipment is provided on 10, make its temperature can
To be adjusted according to actual needs.
First feeding device 16 is for being added the polytetrafluoroethylene fibre containing anode catalyst；Second feeding device 20 is used
In polytetrafluoroethylene fibre of the addition containing cathod catalyst.Meanwhile between fiber feeding device and the 6th compression roller are to 14
It is provided with annealing device 15, setting in this way can make by the perfluorosulfonic acid ion exchange after extruding of the first extrusion forming device
The polytetrafluoroethylene (PTFE) of film surface softens, and urges convenient for the polytetrafluoroethylene fibre of the anode catalyst of subsequent addition and containing cathode
The polytetrafluoroethylene fibre of agent can be successfully poly- with perfluorinated sulfonic acid ion exchange membrane surface under the action of compression roller pair
Tetrafluoroethene is bonded together.Why subsequent polytetrafluoroethylene fibre of the addition containing catalyst, this be in order to increase film electricity
The specific surface area of pole component accelerates reaction rate and efficiency, while also further improving catalyst and handing in perfluorosulfonic acid ion
The fastness for changing film surface keeps it not easily to fall off in use.Preferably, the anode catalyst in polytetrafluoroethylene fibre is
Platinum powder, naturally it is also possible to be other anode catalysts；Cathod catalyst in polytetrafluoroethylene fibre is platinum powder, naturally it is also possible to
Select other cathod catalysts.
First compression roller to the 9, second compression roller to 10, third compression roller to the 11, the 4th compression roller to the 12, the 5th compression roller
To 13 and the 6th compression roller can be set in same level to 14, different horizontal planes can also be located at.
In the present invention, the linear resonance surface velocity of all rollers and winding device 22 is all the same, so that perfluorosulfonic acid ion is handed over
Change film will not stretch it is elongated.
Using the method for above equipment production membrane electrode assembly, include the following steps:
Step (1) raw material preparation: preparing ptfe emulsion, while adding platinum powder in ptfe emulsion,
It stirs evenly, and the ptfe emulsion containing platinum powder is added in leaching material pond 5, and make the polytetrafluoroethylene (PTFE) containing platinum powder
Lotion floods leaching material roller 3；The polytetrafluoroethylene fibre containing anode catalyst is prepared, is added in the first feeding device 16, it is standby
With；The polytetrafluoroethylene fibre containing cathod catalyst is prepared, is added in the second feeding device 20, it is spare；
Step (2) leaching material: perfluorinated sulfonic acid ion exchange membrane is fed into leaching material device to 1 by feeding roller, and successively passes through
Guide roller 2, leaching material roller 3 and the first guide reel are to 4；Perfluorinated sulfonic acid ion exchange membrane passes through in leaching material pond 5 and makes perfluorinated sulfonic acid
The upper and lower surface of amberplex speckles with the ptfe emulsion containing platinum powder；
Step (3) extrusion forming: the perfluorinated sulfonic acid ion exchange membrane for being stained with platinum powder that step (2) is obtained passes through first
Multiple compression rollers pair of extrusion forming device, are repeatedly squeezed, and the semi-finished product of predetermined thickness are obtained；
Step (4) heat treatment: the semi-finished product that step (3) obtains are heat-treated, the polytetrafluoroethyl-ne of surface of semi-finished is made
Alkene softening；
Step (5) fiber is added: using the first feeding device 16, uniform layer overlay contains on the upper surface of semi-finished product
The polytetrafluoroethylene fibre of anode catalyst later makes containing anode catalyst 17 squeezing action by the 7th compression roller
Polytetrafluoroethylene fibre be tentatively fixed on the upper surfaces of semi-finished product；Then it is commutated by reversing roller 18, makes the upper table of semi-finished product
Down, following table is face-up；Then by the 8th compression roller to 19 after, to being not added with the polytetrafluoroethyl-ne containing anode catalyst
The another side of the semi-finished product of alkene fiber contains the polytetrafluoroethyl-ne of cathod catalyst using the uniform layer overlay of the second feeding device 20
Alkene fiber；
Step (6) extrusion forming again: it is squeezed again using the product that the second extrusion forming device obtains step (5)
It is molded, keep the polytetrafluoroethylene fibre containing anode catalyst and the polytetrafluoroethylene fibre containing cathod catalyst secured
Ground is fixed, and membrane electrode assembly is obtained；
Step (7) is coiled: using winding device 22 that membrane electrode assembly made from step (6) is coiled.
Preferably, production equipment further includes cutting device, and this method further includes step (8) dicing process, utilizes cutting machine
Membrane electrode assembly obtained is cut, the membrane electrode assembly for the size that meets the requirements is made.
Preferably, the first feeding device 16 and the second feeding device 20 are selected as electrostatic spinning apparatus, pass through Static Spinning
Silk device prepares the polytetrafluoroethylene fibre containing anode catalyst and the polytetrafluoroethylene fibre containing cathod catalyst respectively,
Directly receive the both side surface in semi-finished product.The fiber prepared by electrostatic spinning apparatus, can obtain thinner fibre diameter,
The specific surface area for being conducive to improve final finished, to improve ozone production efficiency.Certainly, it is produced using electrostatic spinning apparatus
When fiber, some components need to be adaptively set, such as receive pole plate, HV generator, these use the prior art, no
It repeating, key herein is specific needs according to the present invention, suitable electrostatic spinning apparatus is set in place,
To improve the performance of final finished.Certainly, when selection electrostatic spinning apparatus prepares the polytetrafluoroethylene (PTFE) containing anode catalyst
When fiber and polytetrafluoroethylene fibre containing cathod catalyst, the method the step of when (1) raw material preparation, preparation is contained into sun
The polytetrafluoroethylene fibre of electrode catalyst is added in the first feeding device 16, spare, and preparation contains cathod catalyst
Polytetrafluoroethylene fibre is added in the second feeding device 20, spare, replaces with poly- four prepared respectively containing anode catalyst
Vinyl fluoride spinning solution and polytetrafluoroethylene (PTFE) spinning solution containing cathod catalyst, it is spare.Further, in perfluorosulfonic acid ion
Exchange membrane passes through before the first feeding device 16, can also carry out plasma treatment, so that the surface of semi-finished product is generated pit, with benefit
The attachment of fiber when electrostatic spinning；Or the 6th compression roller there is tiny arcuation protrusion to 14 surface, thus can also make half
The surface of finished product generates tiny pit, conducive to the attachment of fiber when electrostatic spinning.
Preferably, poly- containing cathod catalyst in polytetrafluoroethylene fibre of the preparation containing anode catalyst and preparation
When tetrafluoroethylene fiber, added with pore former, so as to the polytetrafluoroethylene fibre containing anode catalyst and contain cathod catalyst
Polytetrafluoroethylene fibre surface and inside have hole or pit, this is capable of increasing specific surface area, so that anti-when subsequent production ozone
Rate is answered to be improved.
Preferably, the width of perfluorinated sulfonic acid ion exchange membrane used in this method is in 2-150cm, more preferably 10-
100cm, further preferably 50-80cm.Using wider perfluorinated sulfonic acid ion exchange membrane, and match feeding for suitable width
Enter roller, compression roller etc., in high volume expeditiously can produce membrane electrode assembly, while also providing accessory for large-scale ozone generator
Support.Certainly, the width of perfluorinated sulfonic acid ion exchange membrane can also consider specific actual needs, production and processing difficulty and warp
Select bigger after the factors such as Ji benefit, it is not limited here.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (6)
1. a kind of produce the method for being used to prepare the membrane electrode assembly of ozone, it is characterised in that: this method uses and prepares ozone
The production equipment of membrane electrode assembly, including the feeding roller that sets gradually to, leaching material device, the first extrusion forming device, heat treatment
Device, fiber feeding device, the second extrusion forming device and winding device；Leaching material device includes guide roller, leaching material roller, the
One guide reel to leaching material pond；First extrusion forming device by multiple compression rollers to forming, including set gradually first
Compression roller to, the second compression roller to, third compression roller to, the 4th compression roller to, the 5th compression roller to and the 6th compression roller pair；Institute
State fiber feeding device include the first feeding device set gradually, the 7th compression roller to, reversing roller, the 8th compression roller to and
Two feeding devices；To being located above the both sides of the edge of leaching material pond, roller position is expected in the leaching for the guide roller and the first guide reel
Between guide roller and the first guide reel pair, and it is located inside leaching material pond；Between two guide reels of first guide reel pair
There are a fixed spacings, and upper guide reel is plain roller, and the surface of lower guide reel has tiny arcuation protrusion；The third compression roller
To and the 4th compression roller to for hot-rolling, the 5th compression roller to and the 6th compression roller to for chilling roller；First compression roller pair
With the second compression roller to being above provided with heating element and temperature control equipment；This method specifically comprises the following steps:
Step (1) raw material preparation: preparing ptfe emulsion, while adding platinum powder in ptfe emulsion, stirs
Uniformly, and by the ptfe emulsion containing platinum powder it is added in leaching material pond, and makes the ptfe emulsion containing platinum powder
Flood leaching material roller；The polytetrafluoroethylene fibre containing anode catalyst is prepared, is added in the first feeding device, it is spare；Preparation
Polytetrafluoroethylene fibre containing cathod catalyst is added in the second feeding device, spare；
Step (2) leaching material: perfluorinated sulfonic acid ion exchange membrane expects device to leaching is fed by feeding roller, and successively by guiding
Roller, leaching material roller and the first guide reel pair；Perfluorinated sulfonic acid ion exchange membrane passes through in leaching material pond and exchanges perfluorosulfonic acid ion
The upper and lower surface of film speckles with the ptfe emulsion containing platinum powder；
Step (3) extrusion forming: the perfluorinated sulfonic acid ion exchange membrane for being stained with platinum powder that step (2) is obtained is squeezed by first
Multiple compression rollers pair of molding machine, are repeatedly squeezed, and the semi-finished product of predetermined thickness are obtained；
Step (4) heat treatment: the semi-finished product that step (3) obtains are heat-treated, the soft PTFE of surface of semi-finished is made
Change；
Step (5) fiber is added: using the first feeding device, uniform layer overlay contains anode and urges on the upper surface of semi-finished product
The polytetrafluoroethylene fibre of agent passes through the squeezing action of the 7th compression roller pair later, makes the polytetrafluoro containing anode catalyst
Vinyl fiber is tentatively fixed on the upper surface of semi-finished product；Then it is commutated by reversing roller, makes the upper surfaces of semi-finished product downward, following table
Up；Then by the 8th compression roller to rear, to be not added with half of the polytetrafluoroethylene fibre containing anode catalyst at
The another side of product contains the polytetrafluoroethylene fibre of cathod catalyst using the uniform layer overlay of the second feeding device；
Step (6) extrusion forming again: it is squeezed into again using the product that the second extrusion forming device obtains step (5)
Type keeps the polytetrafluoroethylene fibre containing anode catalyst and the polytetrafluoroethylene fibre containing cathod catalyst solid securely
It is fixed, obtain membrane electrode assembly；
Step (7) is coiled: using winding device that membrane electrode assembly made from step (6) is coiled.
2. the method that production as described in claim 1 is used to prepare the membrane electrode assembly of ozone, it is characterised in that: contain in preparation
When having the polytetrafluoroethylene fibre of anode catalyst and preparing the polytetrafluoroethylene fibre containing cathod catalyst, added with pore-forming
Agent, so that the polytetrafluoroethylene fibre containing anode catalyst and the polytetrafluoroethylene fibre surface containing cathod catalyst and interior
There are hole or pit in portion.
3. the method that production as described in claim 1 is used to prepare the membrane electrode assembly of ozone, it is characterised in that: in this method
The width of the perfluorinated sulfonic acid ion exchange membrane used is in 2-150cm.
4. the method that production as claimed in claim 3 is used to prepare the membrane electrode assembly of ozone, it is characterised in that: in this method
The width of the perfluorinated sulfonic acid ion exchange membrane used is 10-100cm.
5. the method that production as claimed in claim 4 is used to prepare the membrane electrode assembly of ozone, it is characterised in that: in this method
The width of the perfluorinated sulfonic acid ion exchange membrane used is 50-80cm.
6. a kind of membrane electrode assembly using the described in any item method productions of claim 1-5.
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| CN1205803A (en) * | 1995-12-22 | 1999-01-20 | 德国赫彻斯特研究技术两合公司 | Process for continuous production of membrane-electrode componentes |
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