CN103786415B - Method for preparing huge two-sided flexible copper foil with plasma spraying complex solution - Google Patents
Method for preparing huge two-sided flexible copper foil with plasma spraying complex solution Download PDFInfo
- Publication number
- CN103786415B CN103786415B CN201410038895.8A CN201410038895A CN103786415B CN 103786415 B CN103786415 B CN 103786415B CN 201410038895 A CN201410038895 A CN 201410038895A CN 103786415 B CN103786415 B CN 103786415B
- Authority
- CN
- China
- Prior art keywords
- copper foil
- polyimide resin
- composite solution
- flexible copper
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a method for preparing a huge two-sided flexible copper foil with a plasma spraying complex solution. The method comprises the steps of (1) preparing the complex solution, including dissolving a polyimide resin monomer to obtain a polyimide resin solution, adding PTC (Positive Temperature Coefficient) powder to the polyimide resin solution and mixing to be even; (2) heating the copper foil to the range from 200 to 400 DEG C by a heating device, coating the complex solution obtained in the step (1) on the copper foil with a plasma coating machine and then forming a polyimide resin composite PTC liquid coating on the copper foil; (3) roasting the copper foil covered with the polyimide resin composite PTC liquid coating in the step (2), and carrying out cross-linking reaction to obtain the huge two-sided flexible copper foil. Compared with the prior art, the method is simple and convenient in processing procedures, the production efficiency and the rate of good-quality products can be improved, the products are highly consistent in thickness, and the obtained huge two-sided flexible copper foil is high in quality reliability, quick and accurate in thermosensitive response, and convenient for capacity adjustment.
Description
Technical field
The present invention relates to the preparation method of double-faced flexible Copper Foil, more particularly, to a kind of plasma spray coating composite solution preparation
The method of jumbo double-faced flexible Copper Foil.
Background technology
Develop rapidly with scientific and technical, social every profession and trade particularly composite, electronic material, decorative material etc.
The demand of feature Copper Foil is increasingly increased.Feature Copper Foil has become as at present in the feature energy and electronic system product
In play support, the critical material of the PCB of interconnection components and parts effect, it is called electronic product signal and power transmission, communication
" neutral net ".As the basic material of electronics industry, its development follows the development of PCB technology to Copper Foil always, and PCB skill
The art then continuous improvement with rapid changepl. never-ending changes and improvements with electronic product.The development of IT product technology promotes PCB towards multiple stratification, slim
Change, densification, high speed, highly reliableization, functionalization direction are developed, and therefore develop and more have high-performance, high-quality, Gao Ke
Copper Foil market prospect by property, functionalization is boundless.
Heyman from nineteen fifty Philips company of Holland et al. can obtain positive temperature after finding the pottery semiconducting of BaTiO3 system
Coefficient（PTC）Since characteristic, people are more and more deep to its understanding.It is meanwhile, also just increasingly extensive in its application aspect,
Penetrate into the every field such as daily life, industrial or agricultural technology, military science, communication, aerospace.PTC thermistor heater element is
The modern product down to high-tech in future tip.It is widely used in light industry, house, traffic, space flight, agricultural, medical treatment, ring
Guarantor, mining, civilian apparatus etc., it, compared with the heater elements such as nickel, chromium silk or far infrared, has the advantages that brilliance.When in PTC unit
When part applies the intensification of AC or DC voltage, below Curie-point temperature, resistivity is very low；When once surmount Curie-point temperature,
Resistivity increases so as to electric current drops to stationary value suddenly, reaches A.T.C, constant temperature purpose.PTC-element adstante febre is not
Rubescent, the flames of anger（Resistance wire is rubescent and has naked light）, nonflammable.When PTC-element environment temperature surmounts limit value, its power is automatic
Drop to equilibrium valve, danger of combustion will not be produced.The energy input adoption rate formula of PTC-element, current limiting acts on, and compares nickel filament
Switching regulator energy input Deng heater element also saves electric power.Ptc material has macromolecular material class and two kinds of ceramic-like, ceramic-like
PTC-element, originally as oxide, the high-temperature oxydation drawback of Ni-Cr free silk, does not have the frangible phenomenon of infrared tube, life-span length yet.And
Porous type is longer than the anapsid life-span.PTC-element itself is temperature automatically controlled, is not required to separately add A.T.C line unit.Porous
Type PTC less needs other heat abstractors, is also not required to use conducting resinl.PTC-element is in low pressure（6-36 lies prostrate）And high pressure（110-240
Volt）Under can normally use.Low pressure PTC-element is applied to all kinds of low voltage heater, instrument low temp compensating, on automobile and computer
Heater on peripheral equipment.High pressure PTC-element is applied to the heating of following electrical equipment：Electric thermal-insulation plate, shoe baking device, heat
Melting glue gun, electric cooker, electric shoes, electric mosquito heater, intravenous injection heating, light-weight plastic closing machine, steam Comb, steam occur
Device, humidifier, curler, video tape recorder, photocopier, automatic vending machine, hot-air screen, hand warmer, tea drier, Water pipe heating
Device, travelling dryer, finish-baking room for automobile, liquefied gas bottle heater, shower, cosmetology device, Electric heating table, baby bottle thermostat, electricity
Hot moxibustion apparatus, electric hot water bottle, electric blanket etc..
The appearance of ptc material, can solve the problems, such as that the speed of traditional switch is not fast and the not big these two aspects of capacity.
With updating of scientific and technical development and technique, the characteristic of PTC-element will be more and more perfect, its normality can galvanization will
It is further improved, a field technology revolution of traditional switch may be led in AC and DC field, for linear quadratic control equipment
Also have a wide range of applications, it will substantially reduce the manufacturing cost of electronic equipment, improve the economy that electronic system runs,
Reliability.
Due to barium titanate ceramics material, it is more difficult that traditional processing homogeneity controls, and limits PTC for ptc material processing
The application of material.
Tradition prepares PTC components and parts due to the restriction of technique, and PTC components and parts and electrode are processed respectively, then welds with pole plate
Connect or be cemented to device, based on Miniature component, there are no the report of jumbo ultra-thin function Copper Foil processing.
Content of the invention
For problems of the prior art, it is huge that the present invention provides a kind of compound PTC liquid of polyimide resin to prepare
The method of width double-faced flexible Copper Foil, the method course of processing is easy, can improve production efficiency and acceptance rate.
For achieving the above object, the present invention employs the following technical solutions：
A kind of method that plasma spray coating composite solution prepares jumbo double-faced flexible Copper Foil, comprises the following steps：（1）System
Standby composite solution：Polyimide resin solution is obtained after the monomer dissolving of polyimide resin, PTC powder body is added polyimides
Resin solution, mixes；（2）By heater, Copper Foil is heated to 200-400 DEG C, using spraying equipment, step is applied on Copper Foil
Suddenly（1）Prepared composite solution, forms the coating that polyimide resin is combined PTC liquid on Copper Foil；（3）Baking procedure（2）
Coated polyimide resin is combined the Copper Foil of PTC liquid coating, crosslinked is reacted to jumbo double-faced flexible Copper Foil.
Described Copper Foil is electrolytic copper foil or hot pressing Copper Foil.
Described step（1）Ptc material is white carbon black, carbon fiber, graphite flake, silver, copper sheet, silver copper-clad nano-particle, Barium metatitanate.
Micropowder, leaded mass percent are that the Barium metatitanate. micropowder of 1.0-1.5% or mass percent containing the strontium Barium metatitanate. for 1.8-2.2% is micro-
Powder.
Described step（1）The monomer of middle polyimide resin is aminopropane or biphenyl anhydride, after the dissolving of described monomer with
During the mixing of PTC powder body, composite is carried out using ultrasound wave.
Described step（2）The thickness of middle Copper Foil is 3-70 μm.
Described step（2）The thickness that the polyimide resin being formed on middle Copper Foil is combined PTC liquid coating is 1-10 μm.
Described step（3）Middle cross-linking reaction is：Ultraviolet light cross-linking reaction, the reaction of microwave cross-linking reaction, ir-crosslinkable, electronics
Bundle crosslinking with radiation reaction, crosslinking with radiation reaction or heat cross-linking reaction.
Described step（3）Middle baking is carried out in Long Yaozhong, experiences 160 DEG C respectively, 200 DEG C, 250 DEG C, 300 DEG C, 350 DEG C
Humidity province, each humidity province baking time is 1-30 minute.
Described step（3）The thickness of prepared jumbo double-faced flexible Copper Foil is 5-90 μm.
Compared with prior art, the course of processing of the present invention is easy, can improve production efficiency and acceptance rate, product thickness
Concordance is strong, and prepared jumbo double-faced flexible Copper Foil qualitative reliability is high, and thermosensitive response speed is fast, accurately and capacity adjustment side
Just；The present invention, with extra thin copper foil as base material, using spraying technology, processes one layer of ptc material respectively on Copper Foil two sides, is formed huge
Width double-faced flexible Copper Foil functional material, meets the every field such as daily life, industrial or agricultural technology, military science, communication, aerospace
Application demand.
Brief description
Fig. 1 is spraying coating process flow chart of the present invention.
Specific embodiment
Embodiment 1
As shown in figure 1, the method that the present embodiment plasma spray coating composite solution prepares jumbo double-faced flexible Copper Foil, including
Following steps：（1）Prepare composite solution：Take aminopropane 93g, be dissolved in 1000g methyl nitrosourea and prepare solution, this solution water
Bath cooling, sequentially adds biphenyl anhydride 73.7g under nitrogen protection, mixed liquor is returned to room temperature, continuously stirred 3 hours, carries out
Polyreaction, obtains sticky thermoplastic polyimide resin precursor solution, 140g carbon fiber is added in above solution
It is ultrasonic and stir two hours, prepared composite solution in ultrasound wave,（2）The electrolytic copper foil that thickness is 5 μm is put through unwinding device 1
Go out, by heater 2, the electrolytic copper foil of releasing is heated to 200 °C, in 1.3 meters of fabric width, long 16 meters of plasma coating
On machine 3, with 50 ms/min of 600 meters of speed continuously coating, controlled by the flow control valve 4 of setting on plasma coating machine
The flow of system coating liquid, makes the coating thickness of solidification be 2.5 μm, cooled device 5 cools down, subsequently into wrap-up 6,
Complete the double-face spray painting on electrolytic copper foil for the solution that polyimide resin is combined PTC；（3）By the electrolytic copper foil in wrap-up
Batch out in the imperial kiln being contained in 50 meters long, experience 160 DEG C successively, 200 DEG C, 250 DEG C, 300 DEG C, 350 DEG C are heated, each
Each 10 minutes of humidity province, completes sub- amidatioon, long through prepared 600 meters of the package of ultraviolet light cross-linking reaction, 1.3 meters of fabric width, and thickness is
10 μm of jumbo double-faced flexible electrolytic copper foil.
Embodiment 2
The method that the present embodiment plasma spray coating composite solution prepares jumbo double-faced flexible Copper Foil, comprises the following steps：
（1）Prepare composite solution：Take aminopropane 93g, be dissolved in 1000g methyl nitrosourea and prepare solution, this solution is cooled down with water-bath, nitrogen
Sequentially add biphenyl anhydride 73.7g under gas shielded, mixed liquor returned to room temperature, continuously stirred 3 hours, carry out polyreaction,
Obtain sticky thermoplastic polyimide resin precursor solution, 140g white carbon black is added to super in ultrasound wave in above solution
Sound simultaneously stirs two hours, prepared composite coating liquid,（2）The electrolytic copper foil that thickness is 3 μm is released through unwinding device, by heating
The electrolytic copper foil of releasing is heated to 220 °C by device, on 1.3 meters of fabric width, long 16 meters of plasma coating machine, with 50 ms/min
600 meters of the speed continuously coating of clock, controls the flow of coating liquid by the flow control valve of setting on plasma coating machine,
The coating thickness of solidification is made to be 1 μm, cooled device cooling, subsequently into wrap-up, complete polyimide resin and be combined
Double-face spray painting on electrolytic copper foil for the PTC liquid；（3）Electrolytic copper foil in wrap-up is batched out the imperial kiln being contained in 50 meters long
In, experience 160 DEG C successively, 200 DEG C, 250 DEG C, 300 DEG C, 350 DEG C are heated, and each 1 minute of each humidity province completes Asia
Amidatioon, fabric width 1.3 meters long through prepared 600 meters of the package of ultraviolet light cross-linking reaction, thickness is 5 μm of jumbo double-faced flexible electrolysis
Copper Foil.
Embodiment 3
The method that the present embodiment plasma spray coating composite solution prepares jumbo double-faced flexible Copper Foil, comprises the following steps：
（1）Prepare composite solution：Take aminopropane 93g, be dissolved in 1000g methyl nitrosourea and prepare solution, this solution is cooled down with water-bath, nitrogen
Sequentially add biphenyl anhydride 73.7g under gas shielded, mixed liquor returned to room temperature, continuously stirred 3 hours, carry out polyreaction,
Obtain sticky thermoplastic polyimide resin precursor solution, 100g graphite flake is added in above solution in ultrasound wave
It is ultrasonic and stir two hours, prepared composite solution,（2）The hot pressing Copper Foil that thickness is 70 μm is released through unwinding device, by adding
The hot pressing Copper Foil of releasing is heated to 250 °C by thermal, on 1.3 meters of fabric width, long 16 meters of plasma coating machine, with 50
M/min 600 meters of speed continuously coating, coating liquid is controlled by the flow control valve of setting on plasma coating machine
Flow, makes the coating thickness of solidification be 10 μm, and cooled device cooling, subsequently into wrap-up, completes polyimides tree
Fat is combined double-face spray painting on hot pressing Copper Foil for the PTC liquid；（3）Hot pressing Copper Foil in wrap-up is batched out and is contained in 50 meters long
Imperial kiln in, successively experience 160 DEG C, 200 DEG C, 250 DEG C, 300 DEG C, 350 DEG C are heated, each 20 points of each humidity province
Clock, completes sub- amidatioon, package 600 meters is obtained through ir-crosslinkable reaction long, 1.3 meters of fabric width, and thickness is 90 μm jumbo two-sided
Flexible hot pressing Copper Foil.
Embodiment 4
The method that the present embodiment plasma spray coating composite solution prepares jumbo double-faced flexible Copper Foil, comprises the following steps：
（1）Prepare composite solution：Take aminopropane 93g, be dissolved in 1000g methyl nitrosourea and prepare solution, this solution is cooled down with water-bath, nitrogen
Sequentially add biphenyl anhydride 73.7g under gas shielded, mixed liquor returned to room temperature, continuously stirred 3 hours, carry out polyreaction,
Obtain sticky thermoplastic polyimide resin precursor solution, 150g graphite flake is added in above solution in ultrasound wave
It is ultrasonic and stir two hours, prepared composite solution,（2）The electrolytic copper foil that thickness is 30 μm is released through unwinding device, by adding
The electrolytic copper foil of releasing is heated to 300 °C by thermal, on 1.3 meters of fabric width, long 16 meters of plasma coating machine, with 50
M/min 600 meters of speed continuously coating, coating liquid is controlled by the flow control valve of setting on plasma coating machine
Flow, makes the coating thickness of solidification be 5 μm, and cooled device cooling, subsequently into wrap-up, completes polyimide resin
Double-face spray painting on electrolytic copper foil for the compound PTC liquid；（3）Electrolytic copper foil in wrap-up is batched out and is contained in 50 meters long
In imperial kiln, experience 160 DEG C successively, 200 DEG C, 250 DEG C, 300 DEG C, 350 DEG C are heated, each 25 minutes of each humidity province,
Complete sub- amidatioon, fabric width 1.3 meters long through prepared 600 meters of the package of heat cross-linking reaction, thickness is 40 μm of jumbo double-faced flexible electricity
Solution Copper Foil.
Embodiment 5
The method that the present embodiment plasma spray coating composite solution prepares jumbo double-faced flexible Copper Foil, comprises the following steps：
（1）Prepare composite solution：Take aminopropane 93g, be dissolved in 1000g methyl nitrosourea and prepare solution, this solution is cooled down with water-bath, nitrogen
Sequentially add biphenyl anhydride 73.7g under gas shielded, mixed liquor returned to room temperature, continuously stirred 3 hours, carry out polyreaction,
Obtain sticky thermoplastic polyimide resin precursor solution, 50g graphite flake is added in above solution in ultrasound wave
It is ultrasonic and stir two hours, prepared composite solution,（2）The hot pressing Copper Foil that thickness is 50 μm is released through unwinding device, by adding
The hot pressing Copper Foil of releasing is heated to 400 °C by thermal, on 1.3 meters of fabric width, long 16 meters of plasma coating machine, with 50 meters/
600 meters of the speed continuously coating of minute, controls the stream of coating liquid by the flow control valve of setting on plasma coating machine
Amount, makes the coating thickness of solidification be 5 μm, and cooled device cooling, subsequently into wrap-up, completes polyimide resin multiple
Close double-face spray painting on hot pressing Copper Foil for the PTC liquid；（3）Hot pressing Copper Foil in wrap-up is batched out and is contained in 50 meters of long dragons
In kiln, experience 160 DEG C successively, 200 DEG C, 250 DEG C, 300 DEG C, 350 DEG C are heated, and each 30 minutes of each humidity province completes Asia
Amidatioon, fabric width 1.3 meters long through prepared 600 meters of the package of heat cross-linking reaction, thickness is 60 μm of jumbo double-faced flexible hot pressing copper
Paper tinsel.
Claims (5)
1. a kind of plasma spray coating composite solution prepares the method for jumbo double-faced flexible Copper Foil it is characterised in that including following walking
Suddenly：（1）Prepare composite solution：Mixed liquor is obtained after the monomer dissolving of polyimide resin, mixed liquor is carried out polyreaction, obtains
To polyimide resin precursor solution, PTC powder body is added polyimide resin precursor solution, mix prepared compound molten
Liquid；（2）By heater, Copper Foil is heated to 200-400 DEG C, using plasma coating machine on Copper Foil applying step（1）
Prepared composite solution, forms the coating of composite solution on Copper Foil；（3）Baking procedure（2）Coated composite solution coating
Copper Foil, crosslinked is reacted to jumbo double-faced flexible Copper Foil；Described step（1）The monomer of middle polyimide resin be aminopropane and
Biphenyl anhydride, described PTC powder body is carried out using ultrasound wave when being mixed with polyimide resin precursor solution；Described step（2）
The thickness of middle Copper Foil is 3-70 μm, described step（2）The thickness forming composite solution coating on middle Copper Foil is 1-10 μm；Described step
Suddenly（3）Middle baking is carried out in Long Yaozhong, experiences 160 DEG C respectively, 200 DEG C, 250 DEG C, 300 DEG C, 350 DEG C of humidity provinces, each temperature
Area's baking time is 1-30 minute.
2. the method that plasma spray coating composite solution according to claim 1 prepares jumbo double-faced flexible Copper Foil, it is special
Levy and be：Described Copper Foil is electrolytic copper foil or hot pressing Copper Foil.
3. the method that plasma spray coating composite solution according to claim 1 prepares jumbo double-faced flexible Copper Foil, it is special
Levy and be：Described step（1）Ptc material is white carbon black, carbon fiber, graphite flake, silver, copper sheet, silver copper-clad nano-particle, leaded quality
Percent is the Barium metatitanate. micropowder of 1.0-1.5% or mass percent containing strontium is the Barium metatitanate. micropowder of 1.8-2.2%.
4. the method that plasma spray coating composite solution according to claim 1 prepares jumbo double-faced flexible Copper Foil, it is special
Levy and be：Described step（3）Middle cross-linking reaction is reacted for crosslinking with radiation.
5. the side of jumbo double-faced flexible Copper Foil is prepared according to the arbitrary described plasma spray coating composite solution of claim 1-4
Method it is characterised in that：Described step（3）The thickness of prepared jumbo double-faced flexible Copper Foil is 5-90 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410038895.8A CN103786415B (en) | 2014-01-27 | 2014-01-27 | Method for preparing huge two-sided flexible copper foil with plasma spraying complex solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410038895.8A CN103786415B (en) | 2014-01-27 | 2014-01-27 | Method for preparing huge two-sided flexible copper foil with plasma spraying complex solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103786415A CN103786415A (en) | 2014-05-14 |
| CN103786415B true CN103786415B (en) | 2017-02-15 |
Family
ID=50662677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410038895.8A Expired - Fee Related CN103786415B (en) | 2014-01-27 | 2014-01-27 | Method for preparing huge two-sided flexible copper foil with plasma spraying complex solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103786415B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0097279A2 (en) * | 1982-06-10 | 1984-01-04 | Nissan Motor Co., Ltd. | Method for making covers |
| CN101466544A (en) * | 2006-04-18 | 2009-06-24 | 宇部兴产株式会社 | Polyimide film for coating metal and metal-laminated polyimide film |
| CN101887960A (en) * | 2010-07-13 | 2010-11-17 | 清华大学 | Lithium ion battery pole ear and lithium ion battery with same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008087254A (en) * | 2006-09-29 | 2008-04-17 | Nippon Steel Chem Co Ltd | Flexible copper-clad laminate and flexible copper clad laminate with carrier |
-
2014
- 2014-01-27 CN CN201410038895.8A patent/CN103786415B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0097279A2 (en) * | 1982-06-10 | 1984-01-04 | Nissan Motor Co., Ltd. | Method for making covers |
| CN101466544A (en) * | 2006-04-18 | 2009-06-24 | 宇部兴产株式会社 | Polyimide film for coating metal and metal-laminated polyimide film |
| CN101887960A (en) * | 2010-07-13 | 2010-11-17 | 清华大学 | Lithium ion battery pole ear and lithium ion battery with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103786415A (en) | 2014-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103794801B (en) | Plasma spray coating macromolecule compound PTC powder prepares the method for lithium battery collector | |
| CN103449423B (en) | A kind of Graphene heat conducting film and preparation method thereof | |
| CN105315795A (en) | Intelligent high-temperature-resistant far infrared conductive heating energy-saving material | |
| CN103794802A (en) | Method for preparing lithium battery current collector by electrostatic coating polymer composite PTC powder | |
| Song et al. | Temperature dependence of dielectric properties of SiCf/PyC/SiC composites | |
| CN103786415B (en) | Method for preparing huge two-sided flexible copper foil with plasma spraying complex solution | |
| CN103785602B (en) | Electrostatic coating composite solution prepares the method for jumbo double-faced flexible aluminium foil | |
| CN103811096B (en) | Method for preparing double-faced flexible aluminum foil by electrostatic coating of polymer composite PTC (positive temperature coefficient) powder | |
| CN103786403B (en) | Method for preparing wide-breadth double-sided flexible copper foils using electrostatic coating complex solution | |
| CN111278177A (en) | Preparation method of carbon material electric heating sheet | |
| CN103786402B (en) | Atomization dusting device sprays the method that composite solution prepares jumbo double-faced flexible Copper Foil | |
| CN108601113A (en) | A kind of graphite Electric radiant Heating Film and its preparation method and application | |
| CN103789712B (en) | Plasma spraying polymer compound PTC powder prepares the method for double-faced flexible aluminium foil | |
| CN103789755A (en) | Method for preparing huge dual-side flexible aluminum foil by spraying compound solution through atomizing and powder-spraying device | |
| CN103785593B (en) | Dusting device sprays macromolecule and is combined the method that PTC powder body prepares double-faced flexible Copper Foil | |
| CN103785594B (en) | Method for preparing double-sided flexible copper foil by electrostatically coating polymer composite PTC powder | |
| CN103805935A (en) | Method for preparing double-face flexible copper foil by plasma spraying polymer-based composite PTC (Positive Temperature Coefficient) powder | |
| CN103789762B (en) | Dusting device sprays macromolecule and is combined the method that PTC powder body prepares double-faced flexible aluminium foil | |
| CN103805936A (en) | Method for preparing extremely large double-sided flexible aluminum foil by lasma spraying composite solution | |
| CN110300467A (en) | A kind of graphene far infrared heating electricity a heatable brick bed plate | |
| CN203678562U (en) | Electrostatic PTC film coating machine | |
| CN108541143A (en) | A kind of preparation facilities and preparation method of polyimide copper clad lamination | |
| CN106977112B (en) | A kind of preparation method of ito thin film | |
| CN114197220B (en) | Cloth structure with heat preservation layer and preparation method thereof | |
| CN108822607A (en) | A kind of manufactured preparation method for absorbing static electricity heating slurry of graphene carbon nanotube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20210127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |