CN107123513A - The method for lifting transformer oil clean-up effect - Google Patents
The method for lifting transformer oil clean-up effect Download PDFInfo
- Publication number
- CN107123513A CN107123513A CN201710476460.5A CN201710476460A CN107123513A CN 107123513 A CN107123513 A CN 107123513A CN 201710476460 A CN201710476460 A CN 201710476460A CN 107123513 A CN107123513 A CN 107123513A
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- Prior art keywords
- transformer oil
- corona charging
- filter membrane
- drying
- pin
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0058—Working-up used lubricants to recover useful products ; Cleaning by filtration and centrifugation processes; apparatus therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Power Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of method for lifting transformer oil clean-up effect, comprise the following steps：1）Filter membrane is placed in vacuum drying chamber and is dried in vacuo；2）Corona charging processing is carried out to filter membrane.The method of the lifting transformer oil clean-up effect of the present invention, by carrying out corona charging processing to the filter membrane after drying process, after the membrane filtration aging transformer oil that corona charging is handled, relative dielectric constant and the dielectric dissipation factor ratio of transformer oil are more with reducing after undressed membrane filtration, illustrate that corona charging processing is carried out to filter membrane is favorably improved membrane filtration effect.In addition, technical scheme have the advantages that to realize simple, required instrument cost it is low, with good practicality, do not need special equipment and special treatment conditions, can be achieved using simple device and repeatability is strong.
Description
Technical field
It is specifically a kind of method for lifting transformer oil clean-up effect the invention belongs to Immunohistochemistry field.
Background technology
Transformer oil is dielectric important inside power transformer, as power transformer is run for a long time, temperature
The factors such as degree, electric field can cause the differentiation degraded of the insulating materials such as insulating paper in equipment, insulating oil, cause well cuts granule content
Increase, the insulating properties reduction of equipment, may cause insulation breakdown, burn the major accidents such as electrical equipment when serious.
Transformer oil purification, the application for regenerating the technology (with electrically regenerative), the transformer oil process purification for making aging and degrading,
Regeneration treatment, plays a role again as fresh oil in operating transformer.Typical transformer oil purification processes have pressure type filter
Oil machine filtration method, vacuum oil filtering method and adsorption filtration method etc., requirement of the filtration method to filter paper for oil is higher, and changes frequent, causes
With high costs is in order to strengthen filter membrane oil strain performance, it is necessary to a kind of method of lifting transformer oil clean-up effect.
The content of the invention
In view of this, can be effective it is an object of the invention to provide a kind of method for lifting transformer oil clean-up effect
Improve the performance that filter membrane purifies transformer oil.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of method for lifting transformer oil clean-up effect, comprises the following steps：
1）Filter membrane is placed in vacuum drying chamber and is dried in vacuo；
2）Corona charging processing is carried out to filter membrane.
Further, step 3 is gone back）, the filter membrane mistake handled respectively with the filter membrane handled without corona charging and through corona charging
Aging transformer oil is filtered, and the oil sample after not filtering and filtering is measured by frequency dielectric and magnetic method.
Further, the step 1）In, drying temperature is set as 40-80 DEG C, and drying time is 4-48h.
Further, the step 2）In, it is to the condition that filter membrane carries out corona charging：Press consistent with grid voltage polarity using pin
Pin-gate electrode, wherein, pin pressure（5）-（30）KV, grid voltage（1）-（10）KV, pin-pitch is from for 10-40mm, grid-sample
Product distance is 3-15mm, charging interval 0.5-60min.
Further, the step 3）In, sand core funnel is cleaned using absolute ethyl alcohol, deionized water and ultrasonic cleaning machine, and
Sand core funnel will be washed and be placed on drying in vacuum drying chamber；After the completion of drying, respectively by the filter membrane handled without corona charging and
The filter membrane handled through corona charging, which is arranged in sand core funnel, filters aging transformer oil.
Further, the drying means of the sand core funnel is：Drying time 4-48h, drying temperature is 40-150 DEG C.
Further, the filter membrane uses polypropylene or PTFE filter membranes.
The beneficial effects of the present invention are：
The method of the lifting transformer oil clean-up effect of the present invention, by being carried out to the filter membrane after drying process at corona charging
Reason, after the membrane filtration aging transformer oil that corona charging is handled, the relative dielectric constant and dielectric loss of transformer oil
Factor is more more than with reducing after untreated membrane filtration, illustrates that corona charging processing is carried out to filter membrane is favorably improved filter
Membrane filtration effect.In addition, technical scheme have realize simple, required instrument cost it is low, with good reality
With property, do not need special equipment and special treatment conditions, can be achieved and the strong advantage of repeatability using simple device.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the domestic polypropylene filter surface topography that field emission scanning electron microscope is observed.
Fig. 2 is that the polypropylene filter after being handled through the inventive method is filtered before transformer oil with untreated polypropylene filter
Oily dielectric constant frequency response curve afterwards.
Fig. 3 is that the polypropylene filter after being handled through the inventive method is filtered before transformer oil with untreated polypropylene filter
Oily dielectric dissipation factor frequency response curve afterwards.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1
The method that the present embodiment lifts transformer oil clean-up effect, comprises the following steps：
1）Filter membrane is placed in vacuum drying chamber and is dried in vacuo；Specifically, drying temperature is set as 40-80 DEG C, drying time
For 4-48h.The filter membrane of the present embodiment uses polypropylene filter, and its basic parameter is：Resistance 30pa, efficiency 92%, 0.3 μm of particle diameter,
Filter membrane, is put into vacuum drying chamber by air quantity 32LPM first, and design temperature is 50 DEG C, and the time is 24h.
2）Corona charging processing is carried out to filter membrane.And the condition for carrying out corona charging to filter membrane is：Using pin pressure and grid voltage
Consistent pin-the gate electrode of polarity, wherein, pin pressure（5）-（30）KV, grid voltage（1）-（10）KV, pin-pitch is from for 10-
40mm, grid-sample distance is 3-15mm, charging interval 0.5-60min.
The present embodiment be by polypropylene filter at normal temperatures, in air atmosphere, two kinds of samples are carried out using pin-gate electrode
Corona charging processing, its pin pressure is -10kV, and grid voltage is -2kV, and pin-pitch is from for 35mm, and grid-sample distance is 10mm, charging
Time is 5min.
3）The membrane filtration aging transformer oil handled respectively with the filter membrane handled without corona charging and through corona charging,
And the oil sample after not filtering and filtering is measured by frequency dielectric and magnetic method.Specifically, the present embodiment using absolute ethyl alcohol, go from
Sub- water and ultrasonic cleaning machine clean sand core funnel, and will wash sand core funnel and be placed in vacuum drying chamber and dry；After the completion of drying,
The filter membrane handled respectively by the filter membrane handled without corona charging and through corona charging is arranged on filtering aging in sand core funnel and become
Depressor oil.And the drying condition of sand core funnel is：Drying time 30h, drying temperature is 80 DEG C.
The present embodiment is first to being cleaned and being dried for the sand core funnel that transformer oil is filtered:First use absolute ethyl alcohol
Sand core funnel is alternately and repeatedly cleaned with deionized water, then cleaned using ultrasonic cleaner, then use deionization
Water is rinsed, and is placed in vacuum drying chamber being dried in vacuo 24h, drying temperature is 50 DEG C；Filtering oil sample is transformer station high-voltage side bus
The aging transformer oil of 1 year, takes two groups of oil samples, and every group of 250ml waits to be filtered；Taking-up sand core funnel, which is stood to its temperature, is down to
Room temperature, filters one of which aging transformer oil, while using untreated filter with the polypropylene filter after corona charging process
Film filters another group of aging transformer oil and does experiment contrast under the same conditions；Finally using the broadband dielectrics of Concept 80 spectrum
Test system（Novocontrol GMBH-Germany）Test relative Jie with filtered aged crude oil after all filterings
Two frequency domain dielectric characterization amounts of electric constant and dielectric dissipation factor.Test result as shown in Figure 2,3, it can be seen that
At low frequency, using the aging transformer oil of the membrane filtration of non-corona charging processing, the relative dielectric constant of transformer oil and Jie
Matter loss factor reduces, and has recovered insulation characterisitic to a certain extent；The membrane filtration aging transformation handled by corona charging
After device oil, the relative dielectric constant and dielectric dissipation factor of transformer oil further reduce, and illustrate that corona charging processing contributes to
Improve membrane filtration effect.
Embodiment 2
The method that the present embodiment lifts transformer oil clean-up effect, comprises the following steps：
1）Filter membrane is placed in vacuum drying chamber and is dried in vacuo；Specifically, drying temperature is set as 40-80 DEG C, drying time
For 4-48h.The filter membrane of the present embodiment uses polypropylene filter, and its basic parameter is：Resistance 30pa, efficiency 92%, 0.3 μm of particle diameter,
Filter membrane, is put into vacuum drying chamber by air quantity 32LPM first, and design temperature is 40 DEG C, and the time is 48h.
2）Corona charging processing is carried out to filter membrane.And the condition for carrying out corona charging to filter membrane is：Using pin pressure and grid voltage
Consistent pin-the gate electrode of polarity, wherein, pin pressure（5）-（30）KV, grid voltage（1）-（10）KV, pin-pitch is from for 10-
40mm, grid-sample distance is 3-15mm, charging interval 0.5-60min.
The present embodiment be by polypropylene filter at normal temperatures, in air atmosphere, two kinds of samples are carried out using pin-gate electrode
Corona charging processing, its pin pressure is -5kV, and grid voltage is -1kV, and pin-pitch is from for 10mm, and grid-sample distance is 3mm, during charging
Between be 60min.
3）The membrane filtration aging transformer oil handled respectively with the filter membrane handled without corona charging and through corona charging,
And the oil sample after not filtering and filtering is measured by frequency dielectric and magnetic method.Specifically, the present embodiment using absolute ethyl alcohol, go from
Sub- water and ultrasonic cleaning machine clean sand core funnel, and will wash sand core funnel and be placed in vacuum drying chamber and dry；After the completion of drying,
The filter membrane handled respectively by the filter membrane handled without corona charging and through corona charging is arranged on filtering aging in sand core funnel and become
Depressor oil.And the drying condition of sand core funnel is：Drying time 48h, drying temperature is 40 DEG C.
The present embodiment is first to being cleaned and being dried for the sand core funnel that transformer oil is filtered:First use absolute ethyl alcohol
Sand core funnel is alternately and repeatedly cleaned with deionized water, then cleaned using ultrasonic cleaner, then use deionization
Water is rinsed, and is placed in vacuum drying chamber being dried in vacuo 48h, drying temperature is 40 DEG C；Filtering oil sample is transformer station high-voltage side bus
The aging transformer oil of 1 year, takes two groups of oil samples, and every group of 250ml waits to be filtered；Taking-up sand core funnel, which is stood to its temperature, is down to
Room temperature, filters one of which aging transformer oil, while using untreated filter with the polypropylene filter after corona charging process
Film filters another group of aging transformer oil and does experiment contrast under the same conditions；Finally using the broadband dielectrics of Concept 80 spectrum
Test system（Novocontrol GMBH-Germany）Test relative Jie with filtered aged crude oil after all filterings
Two frequency domain dielectric characterization amounts of electric constant and dielectric dissipation factor.Test result can be seen that at low frequency, be filled using non-corona
The aging transformer oil of the membrane filtration of electric treatment, the relative dielectric constant and dielectric dissipation factor of transformer oil reduce, and one
Determine to have recovered insulation characterisitic in degree；After the membrane filtration aging transformer oil that corona charging is handled, the phase of transformer oil
Dielectric constant and dielectric dissipation factor are further reduced, illustrate that corona charging processing is favorably improved membrane filtration effect.
Embodiment 3
The method that the present embodiment lifts transformer oil clean-up effect, comprises the following steps：
1）Filter membrane is placed in vacuum drying chamber and is dried in vacuo；Specifically, drying temperature is set as 40-80 DEG C, drying time
For 4-48h.The filter membrane of the present embodiment uses polypropylene filter, and its basic parameter is：Resistance 30pa, efficiency 92%, 0.3 μm of particle diameter,
Filter membrane, is put into vacuum drying chamber by air quantity 32LPM first, and design temperature is 80 DEG C, and the time is 4h.
2）Corona charging processing is carried out to filter membrane.And the condition for carrying out corona charging to filter membrane is：Using pin pressure and grid voltage
Consistent pin-the gate electrode of polarity, wherein, pin pressure（5）-（30）KV, grid voltage（1）-（10）KV, pin-pitch is from for 10-
40mm, grid-sample distance is 3-15mm, charging interval 0.5-60min.
The present embodiment be by polypropylene filter at normal temperatures, in air atmosphere, two kinds of samples are carried out using pin-gate electrode
Corona charging processing, its pin pressure is -30kV, and grid voltage is -10kV, and pin-pitch is from for 40mm, and grid-sample distance is 15mm, charging
Time is 0.5min.
3）The membrane filtration aging transformer oil handled respectively with the filter membrane handled without corona charging and through corona charging,
And the oil sample after not filtering and filtering is measured by frequency dielectric and magnetic method.Specifically, the present embodiment using absolute ethyl alcohol, go from
Sub- water and ultrasonic cleaning machine clean sand core funnel, and will wash sand core funnel and be placed in vacuum drying chamber and dry；After the completion of drying,
The filter membrane handled respectively by the filter membrane handled without corona charging and through corona charging is arranged on filtering aging in sand core funnel and become
Depressor oil.And the drying means of sand core funnel is：Drying time 4h, drying temperature is 150 DEG C.
The present embodiment is first to being cleaned and being dried for the sand core funnel that transformer oil is filtered:First use absolute ethyl alcohol
Sand core funnel is alternately and repeatedly cleaned with deionized water, then cleaned using ultrasonic cleaner, then use deionization
Water is rinsed, and is placed in vacuum drying chamber being dried in vacuo 4h, drying temperature is 80 DEG C；Filtering oil sample is transformer station high-voltage side bus one
The aging transformer oil in year, takes two groups of oil samples, every group of 250ml waits to be filtered；Taking-up sand core funnel, which is stood to its temperature, is down to room
Temperature, filters one of which aging transformer oil, while using untreated filter membrane with the polypropylene filter after corona charging process
Another group of aging transformer oil is filtered under the same conditions does experiment contrast；Finally surveyed using the broadband dielectrics of Concept 80 spectrum
Test system（Novocontrol GMBH-Germany）Test the relative dielectric with filtered aged crude oil after all filterings
Two frequency domain dielectric characterization amounts of constant and dielectric dissipation factor.Test result can be seen that at low frequency, use non-corona charging
The aging transformer oil of the membrane filtration of processing, the relative dielectric constant and dielectric dissipation factor of transformer oil reduce, necessarily
Insulation characterisitic is recovered in degree；After the membrane filtration aging transformer oil that corona charging is handled, transformer oil it is relative
Dielectric constant and dielectric dissipation factor further reduce, and illustrate that corona charging processing is favorably improved membrane filtration effect.
Embodiment 4
The method that the present embodiment lifts transformer oil clean-up effect, comprises the following steps：
1）Filter membrane is placed in vacuum drying chamber and is dried in vacuo；Specifically, drying temperature is set as 40-80 DEG C, drying time
For 4-48h.The filter membrane of the present embodiment uses polypropylene filter, and its basic parameter is：Resistance 30pa, efficiency 92%, 0.3 μm of particle diameter,
Filter membrane, is put into vacuum drying chamber by air quantity 32LPM first, and design temperature is 60 DEG C, and the time is 36h.
2）Corona charging processing is carried out to filter membrane.And the condition for carrying out corona charging to filter membrane is：Using pin pressure and grid voltage
Consistent pin-the gate electrode of polarity, wherein, pin pressure（5）-（30）KV, grid voltage（1）-（10）KV, pin-pitch is from for 10-
40mm, grid-sample distance is 3-15mm, charging interval 0.5-60min.
The present embodiment be by polypropylene filter at normal temperatures, in air atmosphere, two kinds of samples are carried out using pin-gate electrode
Corona charging processing, its pin pressure is 10kV, and grid voltage is 2kV, and pin-pitch is from for 35mm, and grid-sample distance is 10mm, during charging
Between be 5min.Certainly, can also be to the condition that filter membrane carries out corona charging：Pin pressure be 5kV, grid voltage is 1kV, pin-pitch from
For 20mm, grid-sample distance is 8mm, and the charging interval is 10min；And be that pin pressure is 30kV, grid voltage is 10kV, pin-pitch from
For 25mm, grid-sample distance is 5mm, and the charging interval is 30min, and technical purpose can be achieved.
3）The membrane filtration aging transformer oil handled respectively with the filter membrane handled without corona charging and through corona charging,
And the oil sample after not filtering and filtering is measured by frequency dielectric and magnetic method.Specifically, the present embodiment using absolute ethyl alcohol, go from
Sub- water and ultrasonic cleaning machine clean sand core funnel, and will wash sand core funnel and be placed in vacuum drying chamber and dry；After the completion of drying,
The filter membrane handled respectively by the filter membrane handled without corona charging and through corona charging is arranged on filtering aging in sand core funnel and become
Depressor oil.And the drying means of sand core funnel is：Drying time 15h, drying temperature is 100 DEG C.
The present embodiment is first to being cleaned and being dried for the sand core funnel that transformer oil is filtered:First use absolute ethyl alcohol
Sand core funnel is alternately and repeatedly cleaned with deionized water, then cleaned using ultrasonic cleaner, then use deionization
Water is rinsed, and is placed in vacuum drying chamber being dried in vacuo 4h, drying temperature is 80 DEG C；Filtering oil sample is transformer station high-voltage side bus one
The aging transformer oil in year, takes two groups of oil samples, every group of 250ml waits to be filtered；Taking-up sand core funnel, which is stood to its temperature, is down to room
Temperature, filters one of which aging transformer oil, while using untreated filter membrane with the polypropylene filter after corona charging process
Another group of aging transformer oil is filtered under the same conditions does experiment contrast；Finally surveyed using the broadband dielectrics of Concept 80 spectrum
Test system（Novocontrol GMBH-Germany）Test the relative dielectric with filtered aged crude oil after all filterings
Two frequency domain dielectric characterization amounts of constant and dielectric dissipation factor.Test result can be seen that at low frequency, use non-corona charging
The aging transformer oil of the membrane filtration of processing, the relative dielectric constant and dielectric dissipation factor of transformer oil reduce, necessarily
Insulation characterisitic is recovered in degree；After the membrane filtration aging transformer oil that corona charging is handled, transformer oil it is relative
Dielectric constant and dielectric dissipation factor further reduce, and illustrate that corona charging processing is favorably improved membrane filtration effect.
Embodiment described above is only the preferred embodiment to absolutely prove the present invention and being lifted, protection model of the invention
Enclose not limited to this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (7)
1. a kind of method for lifting transformer oil clean-up effect, it is characterised in that：Comprise the following steps：
1）Filter membrane is placed in vacuum drying chamber and is dried in vacuo；
2）Corona charging processing is carried out to filter membrane.
2. the method for lifting transformer oil clean-up effect according to claim 1, it is characterised in that：Also step 3）, respectively
The membrane filtration aging transformer oil handled with the filter membrane handled without corona charging and through corona charging, and pass through frequency dielectric
Spectrum Method measures the oil sample after not filtering and filtering.
3. the method for lifting transformer oil clean-up effect according to claim 1, it is characterised in that：The step 1）In,
Drying temperature is set as 40-80 DEG C, drying time is 4-48h.
4. the method for lifting transformer oil clean-up effect according to claim 1, it is characterised in that：The step 2）In,
It is to the condition that filter membrane carries out corona charging：Pin-the gate electrode consistent with grid voltage polarity is pressed using pin, wherein, pin pressure（5）-（30）KV, grid voltage（1）-（10）KV, pin-pitch is from for 10-40mm, and grid-sample distance is 3-15mm, charging interval 0.5-
60min。
5. the method for lifting transformer oil clean-up effect according to claim 2, it is characterised in that：The step 3）In,
Sand core funnel is cleaned using absolute ethyl alcohol, deionized water and ultrasonic cleaning machine, and sand core funnel will be washed and is placed on vacuum drying chamber
Middle drying；After the completion of drying, the filter membrane handled respectively by the filter membrane handled without corona charging and through corona charging is arranged on sand
Filtering aging transformer oil in core funnel.
6. the method for lifting transformer oil clean-up effect according to claim 5, it is characterised in that：The sand core funnel
Drying means is：Drying time 4-48h, drying temperature is 40-150 DEG C.
7. the method for the lifting transformer oil clean-up effect according to claim any one of 1-6, it is characterised in that：The filter
Film uses polypropylene or PTFE filter membranes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710476460.5A CN107123513A (en) | 2017-06-21 | 2017-06-21 | The method for lifting transformer oil clean-up effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710476460.5A CN107123513A (en) | 2017-06-21 | 2017-06-21 | The method for lifting transformer oil clean-up effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107123513A true CN107123513A (en) | 2017-09-01 |
Family
ID=59719307
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710476460.5A Pending CN107123513A (en) | 2017-06-21 | 2017-06-21 | The method for lifting transformer oil clean-up effect |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528500A (en) * | 2003-10-16 | 2004-09-15 | 同济大学 | Method for preparing porous filter membrane of polytetrafluoroethylene electret |
| JP2009022843A (en) * | 2007-07-17 | 2009-02-05 | National Institute Of Advanced Industrial & Technology | High-durability hydrogen separation membrane and its manufacturing method |
| CN103100314A (en) * | 2013-01-28 | 2013-05-15 | 大连理工大学 | Method for preparing polyaniline modified neutral conductive filter membrane |
| CN104289114A (en) * | 2014-09-10 | 2015-01-21 | 同济大学 | Conductive filter membrane and application thereof |
| CN104804211A (en) * | 2015-04-23 | 2015-07-29 | 商丘师范学院 | Method for inhibiting charge accumulation on polyimide insulation film |
-
2017
- 2017-06-21 CN CN201710476460.5A patent/CN107123513A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528500A (en) * | 2003-10-16 | 2004-09-15 | 同济大学 | Method for preparing porous filter membrane of polytetrafluoroethylene electret |
| JP2009022843A (en) * | 2007-07-17 | 2009-02-05 | National Institute Of Advanced Industrial & Technology | High-durability hydrogen separation membrane and its manufacturing method |
| CN103100314A (en) * | 2013-01-28 | 2013-05-15 | 大连理工大学 | Method for preparing polyaniline modified neutral conductive filter membrane |
| CN104289114A (en) * | 2014-09-10 | 2015-01-21 | 同济大学 | Conductive filter membrane and application thereof |
| CN104804211A (en) * | 2015-04-23 | 2015-07-29 | 商丘师范学院 | Method for inhibiting charge accumulation on polyimide insulation film |
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Application publication date: 20170901 |