CN105603343B - Gas permeability copper air-conditioner foil and preparation method thereof - Google Patents

Gas permeability copper air-conditioner foil and preparation method thereof Download PDF

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CN105603343B
CN105603343B CN201510962967.2A CN201510962967A CN105603343B CN 105603343 B CN105603343 B CN 105603343B CN 201510962967 A CN201510962967 A CN 201510962967A CN 105603343 B CN105603343 B CN 105603343B
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copper
copper foil
foil
hole
preparation
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CN105603343A (en
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周庆芬
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Ningbo Polygala Cubic Energy Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • B22F1/0003
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/04Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/04Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/043Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/06Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes composite, e.g. polymers with fillers or fibres

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

The invention discloses a kind of preparation method of gas permeability copper air-conditioner foil, the Copper Foil by copper borate whisker and T2 coppers into, the present invention distinguishes composite hydrophilic film and hydrophobic film on the two sides of gas permeability Copper Foil, the air-conditioner foil product that material of the present invention and method are obtained, its tensile strength is more than 8% up to 140 160Mpa, elongation percentage.There is excellent hydrophily and hydrophobicity simultaneously, greatly improve air-conditioning heat exchange efficiency, prevent frosting.

Description

Gas permeability copper air-conditioner foil and preparation method thereof
Technical field
The present invention relates to copper product and its manufacture craft.It is more particularly related to which a kind of be applied to air-conditioning heat exchange Gas permeability copper air-conditioner foil of piece and preparation method thereof.
Background technology
At present copper alloy is typically used for producing air-conditioner foil.But the radiating effect of copper alloy is well below copper alloy Radiating effect, therefore prepare air-conditioner foil using Cu alloy material and increased much with respect to power consumption for copper alloy, smoothness
In addition, as each class standard is to the requirement more and more higher in terms of air conditioner energy-saving, also the energy-conservation to air-conditioner foil is special Property propose higher requirement, air-conditioner foil includes hydrophily paper tinsel and hydrophobicity paper tinsel, and wherein hydrophily paper tinsel surface has stronger parent It is aqueous.The quality of hydrophilicity is adhered to the angular dimension formed after copper foil surface by water and determined, the smaller then hydrophilicity in a angles It is better, on the contrary then hydrophilicity is poorer.In general, a angles are less than 35 °, that is, belong to hydrophilicity, and its major function is to make hot sky Moisture in gas is easily spread out and flowed away downwards along sheet material when the globule is condensed on heat exchanger fin.It can so avoid because changing The globule " bridging " between backing and influence the ventilation effect of heat exchanger, so as to improve the rate of heat exchange of air-conditioning, freezing on an equal basis Electric energy can also be saved under conditions of amount.
Hydrophobicity paper tinsel is called repellency paper tinsel, its surface property and hydrophily paper tinsel contrast.I.e. condensed water is agglomerated to the copper It is larger with contact angle formed by Copper Foil during paper tinsel surface, typically more than 75 °.The more big then hydrophobic performance of angle is better.Use hydrophobic The final purpose of property paper tinsel is identical with hydrophily paper tinsel, i.e., do not allow condensed water to remain between heat exchanger fin.Difference is, hydrophobicity Paper tinsel is the contact angle by increasing condensed water and heat exchanger fin, condensed water formation is easy to the globule of landing and is reached removal heat exchanger fin Between condensed water purpose.
When winter turns on the aircondition because air-conditioning internal machine is heated, outer machine reforms into cold scattering, after temperature reaches certain temperature, The condenser of outer machine will defrost, now interior machine blower failure, outer machine blower failure, compressor operating, four-way valve commutation, commutation The frost of outer machine is melted to outer mechanism heat afterwards, steam is just had and water is produced, now simple hydrophobicity air-conditioner foil or hydrophilic Property air-conditioner foil all effectively steam and water can not be removed.
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantage that at least will be described later.
It is a still further object of the present invention to provide a kind of thickness is thinner, mechanical performance is more excellent, while so that air conditioning energy consumption Lower air-conditioner foil.
In order to realize according to object of the present invention and further advantage there is provided a kind of gas permeability copper air-conditioner foil, its The hydrophilic material and hydrophobic material for being compounded in its two sides by Copper Foil and respectively are constituted;
Wherein, the densely covered through hole of the copper foil surface, its thickness is 0.01-0.02mm, and the quantity of the through hole reaches 5000-9000/m2, the diameter of the pin hole is less than 0.03mm;
Wherein, the hydrophilic material is eptfe film, and its thickness is 0.01-0.02mm;
Wherein, the hydrophobic material is the mixture of porous silica gel and carborundum, the porous silica gel and carborundum Volume ratio is 1:1.25, the consumption of the porous silica gel is 1g/m2, the fineness of the porous silica gel and carbon dust is between 1250- Between 2500 mesh.
Present invention also offers a kind of preparation method of gas permeability copper air-conditioner foil, the Copper Foil by T2 coppers into, including Following steps:
S1, preparation meet the Copper Foil of thickness, and the Copper Foil is etched, and make the copper of the densely covered through hole of Copper Foil Paper tinsel, the thickness of the Copper Foil is 0.01-0.02mm, and the quantity of the through hole reaches 5000-9000/m2, the through hole Diameter is less than 0.03mm;
S2, the one side of eptfe film and step the S1 Copper Foil prepared is combined using adhesive, its In, the thickness of the eptfe film is 0.01-0.02mm, and the composite pressure used is 3kg/cm3, it is combined temperature Spend for 80 DEG C, hauling speed is 2m/s, and the consumption of adhesive is 6g/m2
S3, the another side coating polyethylene alcohol by Copper Foil, are combined with porous silica gel and carborundum, wherein, it is described micro- The volume ratio of hole silica gel and carborundum is 1:1.25, the consumption of the porous silica gel is 1g/m2, the porous silica gel and carborundum Fineness be 1250-2500 mesh, the composite pressure used is 8kg/cm3, combined temp is 85 DEG C, and hauling speed is 1m/ S, the consumption of adhesive is 5g/m2
Preferably, the preparation method of the Copper Foil in the step S1 is:By copper borate whisker and T2 copper powders in mass ratio For 1:20 carry out mixing and ball milling, by the powder isostatic cool pressing after ball milling into cylindrical blank, by the cylindrical blank in argon gas Sintered under protective atmosphere, the blank after sintering is pressed again, blank of the blank after multiple pressure after argon atmosphere resintering, resintering Sheet material is hot extruded into, sheet material carries out Ageing Treatment under argon atmosphere, the sheet material through Wetted constructures is continued into rolling is It may be adapted to the blank of cold rolling 3.5 ± 0.5mm thickness, by 2 cold rolling calenderings and an etching process, obtain 0.01- The ventilative Copper Foil of the densely covered through hole in the surface of 0.02mm thickness.
Preferably, relative air humidity is less than 1% in melting.
Preferably, the concrete operations of the mixing and ball milling include:Ball milling parameter is ratio of grinding media to material 8:1, steel ball by sphere diameter from Totally eight kinds of specifications are loaded in mixture 10mm-80mm, drum's speed of rotation 200r/min, and ball mill working method is shut down to rotate forward 900s 30s, then inverts 900s, shuts down 30s, so circulation, Ball-milling Time is 4h.
Preferably, the concrete operations of 2 cold rolling calenderings include:Carried out once under the conditions of blank temperature is less than 80 DEG C Cold rolling, each passage uses 25-35% pass reductions, by the cold rolling calendering of 6-7 passages, is rolling to 0.4 ± 0.05mm thickness, turns Annealing furnace carries out first time intermediate annealing;Cold rolling blank after first time intermediate annealing is subjected to secondary cold-rolling, each passage is used 35-45% pass reductions, by the cold rolling calendering of 4-5 passages, are rolling to 0.01-0.02mm thickness.
Preferably, the concrete operations of the etching process step include:To the blank by secondary cold-rolling using containing The aqueous solution of 3wt% hydrochloric acid is as electrolyte, with 80 DEG C of liquid temperature and current density 0.42A/cm2Implemented by direct current etching, This results in the Copper Foil with through hole, the quantity of the through hole up to 5000-9000/m2, the diameter of the through hole Less than 0.03mm.
Preferably, the concrete operations of the annealing steps include:Annealing temperature of the Copper Foil of process at 350 DEG C will be rolled through paper tinsel Lower insulation 8h, then it is incubated 10h under 250 DEG C of annealing temperature.
Preferably, also need to carry out the operation except grease before the step 2:Alkali is carried out by alkaline bath at 60 DEG C Wash, the grease of copper foil surface prepared by cleaning step S1;Wherein alkali lye pH value is 11-13;After alkali cleaning terminates, enter back into tank and enter Row high temperature is washed, and cleaning copper rolls up the alkali lye of remained on surface, and high temperature washing temperature is 50-60 DEG C, after washing terminates, at 180 DEG C Copper Foil is dried.
The present invention at least includes following beneficial effect:
1st, the present invention is processed using T2 copper, and T2 copper has good conduction, heat conduction, anti-corrosion and processing characteristics, can weld Connect and soldering.The impurity of the electrical and thermal conductivity containing reduction is less have after processing it is indeformable, film is easy for colouring, oxidation effectiveness is splendid Etc. good characteristics.
2nd, Copper Foil is processed into the structure of densely covered through hole by the present invention, is then respectively coated successively on the two sides of Copper Foil hydrophilic Property film and hydrophobic film, when air-conditioning heat exchange produces vapor, vapor run into hydrophilic film just drawout and along Sheet material flows away downwards, but when vapor is excessive, and hydrophilic film can not be in time by the timely drawout of vapor, now part Hydrone is contacted by ventilative Copper Foil with hydrophobic film, hydrophobic film by hydrone formation be easy to landing the globule and Reach remove heat exchanger fin between condensed water purpose, serve unexpected defrosting effect.
3rd, the present invention is by copper borate whisker and T2 copper powders progress mixed smelting, can obtain specific strength, fatigue strength, resistance to The higher composite of property is ground, using the method for ball milling whisker can be made to be distributed in copper powder more uniformly, institute in the present invention The ball grinding method used can significantly reduce Ball-milling Time, while reducing the segregation and crack defect of whisker.
4th, embryo material is carried out cold rolling twice and intermediate annealing twice by the present invention, can further eliminate cold work hardening, extensive The plasticity and cold deformation ability of multiple copper.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this The research and practice of invention and be understood by the person skilled in the art.
Embodiment
With reference to embodiment, the present invention is described in further detail, to make those skilled in the art with reference to specification Word can be implemented according to this.
It should be noted that experimental method described in following embodiments, unless otherwise specified, is conventional method, institute Reagent and material are stated, unless otherwise specified, is commercially obtained.
Embodiment 1
A kind of gas permeability copper air-conditioner foil, it is compounded in the hydrophilic material and hydrophobicity on its two sides by Copper Foil and respectively Material is constituted;
Wherein, the copper foil surface gathers through hole, and its thickness is 0.01mm, the quantity of the through hole up to 5000/ m2, the diameter of the pin hole is less than 0.03mm;
Wherein, the hydrophilic material is eptfe film, and its thickness is 0.01mm;
Wherein, the hydrophobic material is the mixture of porous silica gel and carborundum, the porous silica gel and carborundum Volume ratio is 1:1.25, the consumption of the porous silica gel is 1g/m2, the fineness of the porous silica gel and carbon dust is between 1250- Between 2500 mesh.
The preparation method of the gas permeability copper air-conditioner foil, the Copper Foil is by T2 coppers into comprising the following steps:
S1, preparation meet the Copper Foil of thickness, and the Copper Foil is etched, and make the copper of the densely covered through hole of Copper Foil Paper tinsel, the thickness of the Copper Foil is 0.01mm, and the quantity of the through hole is up to 5000/m2, the diameter of the through hole is less than 0.03mm;
S2, the one side of eptfe film and step the S1 Copper Foil prepared is combined using adhesive, its In, the thickness of the eptfe film is 0.01mm, and the composite pressure used is 3kg/cm3, combined temp is 80 DEG C, hauling speed is 2m/s, and the consumption of adhesive is 6g/m2
S3, the another side coating polyethylene alcohol by Copper Foil, are combined with porous silica gel and carborundum, wherein, it is described micro- The volume ratio of hole silica gel and carborundum is 1:1.25, the consumption of the porous silica gel is 1g/m2, the porous silica gel and carborundum Fineness be 1250-2500 mesh, the composite pressure used is 8kg/cm3, combined temp is 85 DEG C, and hauling speed is 1m/ S, the consumption of adhesive is 5g/m2
Preferably, the preparation method of the Copper Foil in the step S1 is:By copper borate whisker and T2 copper powders in mass ratio For 1:20 carry out mixing and ball milling, by the powder isostatic cool pressing after ball milling into cylindrical blank, by the cylindrical blank in argon gas Sintered under protective atmosphere, the blank after sintering is pressed again, blank of the blank after multiple pressure after argon atmosphere resintering, resintering Sheet material is hot extruded into, sheet material carries out Ageing Treatment under argon atmosphere, the sheet material through Wetted constructures is continued into rolling is It may be adapted to the blank of cold rolling 3.5 ± 0.5mm thickness, by 2 cold rolling calenderings and an etching process, obtain 0.01mm thickness Surface gather through hole ventilative Copper Foil.
Relative air humidity is less than 1% in melting.
The concrete operations of the mixing and ball milling include:Ball milling parameter is ratio of grinding media to material 8:1, steel ball presses sphere diameter from 10mm-80mm Totally eight kinds of specifications are loaded in mixture, drum's speed of rotation 200r/min, and ball mill working method shuts down 30s, then instead to rotate forward 900s Turn 900s, shut down 30s, so circulation, Ball-milling Time is 4h.
The concrete operations of 2 cold rolling calenderings include:Once cold rolling is carried out under the conditions of blank temperature is less than 80 DEG C, respectively Passage uses 25% pass reduction, by the cold rolling calendering of 7 passages, is rolling to 0.4 ± 0.05mm thickness, turns annealing furnace progress the Intermediate annealing;Cold rolling blank after first time intermediate annealing is subjected to secondary cold-rolling, each passage is processed using 35% passage Rate, by the cold rolling calendering of 5 passages, is rolling to 0.01mm thickness.
The concrete operations of the etching process step include:Blank by secondary cold-rolling is used and contains 3wt% hydrochloric acid The aqueous solution as electrolyte, with 80 DEG C of liquid temperature and current density 0.42A/cm2Implemented by direct current etching, this results in Copper Foil with through hole, the quantity of the through hole is up to 5000/m2, and the diameter of the through hole is less than 0.03mm.
The concrete operations of the annealing steps include:The Copper Foil that process is rolled through paper tinsel is incubated under 350 DEG C of annealing temperature 8h, then it is incubated 10h under 250 DEG C of annealing temperature.
Also need to carry out the operation except grease before the step 2:Alkali cleaning, cleaning step are carried out by alkaline bath at 60 DEG C The grease of copper foil surface prepared by rapid S1;Wherein alkali lye pH value is 11;After alkali cleaning terminates, enter back into tank and carry out high temperature washing, The alkali lye that copper rolls up remained on surface is cleaned, and high temperature washing temperature is 50 DEG C, after washing terminates, Copper Foil is dried at 180 DEG C.
Embodiment 2
A kind of gas permeability copper air-conditioner foil, it is compounded in the hydrophilic material and hydrophobicity on its two sides by Copper Foil and respectively Material is constituted;
Wherein, the copper foil surface gathers through hole, and its thickness is 0.02mm, the quantity of the through hole up to 9000/ m2, the diameter of the pin hole is less than 0.03mm;
Wherein, the hydrophilic material is eptfe film, and its thickness is 0.02mm;
Wherein, the hydrophobic material is the mixture of porous silica gel and carborundum, the porous silica gel and carborundum Volume ratio is 1:1.25, the consumption of the porous silica gel is 1g/m2, the fineness of the porous silica gel and carbon dust is between 1250- Between 2500 mesh.
Present invention also offers a kind of preparation method of gas permeability copper air-conditioner foil, the Copper Foil by T2 coppers into, including Following steps:
S1, preparation meet the Copper Foil of thickness, and the Copper Foil is etched, and make the copper of the densely covered through hole of Copper Foil Paper tinsel, the thickness of the Copper Foil is 0.02mm, and the quantity of the through hole is up to 9000/m2, the diameter of the through hole is less than 0.03mm;
S2, the one side of eptfe film and step the S1 Copper Foil prepared is combined using adhesive, its In, the thickness of the eptfe film is 0.02mm, and the composite pressure used is 3kg/cm3, combined temp is 80 DEG C, hauling speed is 2m/s, and the consumption of adhesive is 6g/m2
S3, the another side coating polyethylene alcohol by Copper Foil, are combined with porous silica gel and carborundum, wherein, it is described micro- The volume ratio of hole silica gel and carborundum is 1:1.25, the consumption of the porous silica gel is 1g/m2, the porous silica gel and carborundum Fineness be 1250-2500 mesh, the composite pressure used is 8kg/cm3, combined temp is 85 DEG C, and hauling speed is 1m/ S, the consumption of adhesive is 5g/m2
The preparation method of Copper Foil in the step S1 is:It is 1 in mass ratio by copper borate whisker and T2 copper powders:20 enter Row mixing and ball milling, by the powder isostatic cool pressing after ball milling into cylindrical blank, by the cylindrical blank in argon atmosphere Lower sintering, the blank after sintering is pressed again, and blank of the blank after multiple pressure after argon atmosphere resintering, resintering is hot extruded into Sheet material, sheet material carries out Ageing Treatment under argon atmosphere, and it is cold to may be adapted to that the sheet material through Wetted constructures is continued into rolling The blank of the 3.5 ± 0.5mm thickness rolled, by 2 cold rolling calenderings and an etching process, the surface for obtaining 0.02mm thickness is close The ventilative Copper Foil of cloth through hole.
Relative air humidity is less than 1% in melting.
The concrete operations of the mixing and ball milling include:Ball milling parameter is ratio of grinding media to material 8:1, steel ball presses sphere diameter from 10mm-80mm Totally eight kinds of specifications are loaded in mixture, drum's speed of rotation 200r/min, and ball mill working method shuts down 30s, then instead to rotate forward 900s Turn 900s, shut down 30s, so circulation, Ball-milling Time is 4h.
The concrete operations of 2 cold rolling calenderings include:Once cold rolling is carried out under the conditions of blank temperature is less than 80 DEG C, respectively Passage uses 35% pass reduction, by the cold rolling calendering of 6 passages, is rolling to 0.4 ± 0.05mm thickness, turns annealing furnace progress the Intermediate annealing;Cold rolling blank after first time intermediate annealing is subjected to secondary cold-rolling, each passage is processed using 45% passage Rate, by the cold rolling calendering of 4 passages, is rolling to 0.02mm thickness.
The concrete operations of the etching process step include:Blank by secondary cold-rolling is used and contains 3wt% hydrochloric acid The aqueous solution as electrolyte, with 80 DEG C of liquid temperature and current density 0.42A/cm2Implemented by direct current etching, this results in Copper Foil with through hole, the quantity of the through hole is up to 9000/m2, and the diameter of the through hole is less than 0.03mm.
The concrete operations of the annealing steps include:The Copper Foil that process is rolled through paper tinsel is incubated under 350 DEG C of annealing temperature 8h, then it is incubated 10h under 250 DEG C of annealing temperature.
Also need to carry out the operation except grease before the step 2:Alkali cleaning, cleaning step are carried out by alkaline bath at 60 DEG C The grease of copper foil surface prepared by rapid S1;Wherein alkali lye pH value is 13;After alkali cleaning terminates, enter back into tank and carry out high temperature washing, The alkali lye that copper rolls up remained on surface is cleaned, and high temperature washing temperature is 60 DEG C, after washing terminates, Copper Foil is dried at 180 DEG C.
Embodiment 3
A kind of gas permeability copper air-conditioner foil, it is compounded in the hydrophilic material and hydrophobicity on its two sides by Copper Foil and respectively Material is constituted;
Wherein, the copper foil surface gathers through hole, and its thickness is 0.015mm, the quantity of the through hole up to 6000/ m2, the diameter of the pin hole is less than 0.03mm;
Wherein, the hydrophilic material is eptfe film, and its thickness is 0.015mm;
Wherein, the hydrophobic material is the mixture of porous silica gel and carborundum, the porous silica gel and carborundum Volume ratio is 1:1.25, the consumption of the porous silica gel is 1g/m2, the fineness of the porous silica gel and carbon dust is between 1250- Between 2500 mesh.
The preparation method of the gas permeability copper air-conditioner foil, the Copper Foil is by T2 coppers into comprising the following steps:
S1, preparation meet the Copper Foil of thickness, and the Copper Foil is etched, and make the copper of the densely covered through hole of Copper Foil Paper tinsel, the thickness of the Copper Foil is 0.015mm, and the quantity of the through hole is up to 6000/m2, the diameter of the through hole is less than 0.03mm;
S2, the one side of eptfe film and step the S1 Copper Foil prepared is combined using adhesive, its In, the thickness of the eptfe film is 0.015mm, and the composite pressure used is 3kg/cm3, combined temp is 80 DEG C, hauling speed is 2m/s, and the consumption of adhesive is 6g/m2
S3, the another side coating polyethylene alcohol by Copper Foil, are combined with porous silica gel and carborundum, wherein, it is described micro- The volume ratio of hole silica gel and carborundum is 1:1.25, the consumption of the porous silica gel is 1g/m2, the porous silica gel and carborundum Fineness be 1250-2500 mesh, the composite pressure used is 8kg/cm3, combined temp is 85 DEG C, and hauling speed is 1m/ S, the consumption of adhesive is 5g/m2
The preparation method of Copper Foil in the step S1 is:It is 1 in mass ratio by copper borate whisker and T2 copper powders:20 enter Row mixing and ball milling, by the powder isostatic cool pressing after ball milling into cylindrical blank, by the cylindrical blank in argon atmosphere Lower sintering, the blank after sintering is pressed again, and blank of the blank after multiple pressure after argon atmosphere resintering, resintering is hot extruded into Sheet material, sheet material carries out Ageing Treatment under argon atmosphere, and it is cold to may be adapted to that the sheet material through Wetted constructures is continued into rolling The blank of the 3.5 ± 0.5mm thickness rolled, by 2 cold rolling calenderings and an etching process, obtains the surface of 0.015mm thickness The ventilative Copper Foil of densely covered through hole.
Relative air humidity is less than 1% in melting.
The concrete operations of the mixing and ball milling include:Ball milling parameter is ratio of grinding media to material 8:1, steel ball presses sphere diameter from 10mm-80mm Totally eight kinds of specifications are loaded in mixture, drum's speed of rotation 200r/min, and ball mill working method shuts down 30s, then instead to rotate forward 900s Turn 900s, shut down 30s, so circulation, Ball-milling Time is 4h.
The concrete operations of 2 cold rolling calenderings include:Once cold rolling is carried out under the conditions of blank temperature is less than 80 DEG C, respectively Passage uses 30% pass reduction, by the cold rolling calendering of 6 passages, is rolling to 0.4 ± 0.05mm thickness, turns annealing furnace progress the Intermediate annealing;Cold rolling blank after first time intermediate annealing is subjected to secondary cold-rolling, each passage is processed using 40% passage Rate, by the cold rolling calendering of 5 passages, is rolling to 0.015mm thickness.
The concrete operations of the etching process step include:Blank by secondary cold-rolling is used and contains 3wt% hydrochloric acid The aqueous solution as electrolyte, with 80 DEG C of liquid temperature and current density 0.42A/cm2Implemented by direct current etching, this results in Copper Foil with through hole, the quantity of the through hole is up to 6000/m2, and the diameter of the through hole is less than 0.03mm.
The concrete operations of the annealing steps include:The Copper Foil that process is rolled through paper tinsel is incubated under 350 DEG C of annealing temperature 8h, then it is incubated 10h under 250 DEG C of annealing temperature.
Also need to carry out the operation except grease before the step 2:Alkali cleaning, cleaning step are carried out by alkaline bath at 60 DEG C The grease of copper foil surface prepared by rapid S1;Wherein alkali lye pH value is 11-13;After alkali cleaning terminates, enter back into tank and carry out high-temperature water Wash, cleaning copper rolls up the alkali lye of remained on surface, high temperature washing temperature is 55 DEG C, after washing terminates, is dried Copper Foil at 180 DEG C It is dry.
The industrial applicibility of the present invention
1st, the present invention is processed using T2 copper, and T2 copper has good conduction, heat conduction, anti-corrosion and processing characteristics, can weld Connect and soldering.The impurity of the electrical and thermal conductivity containing reduction is less have after processing it is indeformable, film is easy for colouring, oxidation effectiveness is splendid Etc. good characteristics.
2nd, Copper Foil is processed into the structure of densely covered through hole by the present invention, is then respectively coated successively on the two sides of Copper Foil hydrophilic Property film and hydrophobic film, when air-conditioning heat exchange produces vapor, vapor run into hydrophilic film just drawout and along Sheet material flows away downwards, but when vapor is excessive, and hydrophilic film can not be in time by the timely drawout of vapor, now part Hydrone is contacted by ventilative Copper Foil with hydrophobic film, hydrophobic film by hydrone formation be easy to landing the globule and Reach remove heat exchanger fin between condensed water purpose, serve unexpected defrosting effect.
3rd, the present invention is by copper borate whisker and T2 copper powders progress mixed smelting, can obtain specific strength, fatigue strength, resistance to The higher composite of property is ground, using the method for ball milling whisker can be made to be distributed in copper powder more uniformly, institute in the present invention The ball grinding method used can significantly reduce Ball-milling Time, while reducing the segregation and crack defect of whisker.
4th, embryo material is carried out cold rolling twice and intermediate annealing twice by the present invention, can further eliminate cold work hardening, extensive The plasticity and cold deformation ability of multiple copper.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited In specific details and shown here as the embodiment with description.

Claims (9)

1. a kind of gas permeability copper air-conditioner foil, it is characterised in that it is compounded in the hydrophily material on its two sides by Copper Foil and respectively Material and hydrophobic material composition;
Wherein, the densely covered through hole of the copper foil surface, its thickness is 0.01-0.02mm, and the quantity of the through hole reaches 5000- 9000/m2, the diameter of the through hole is less than 0.03mm;
Wherein, the hydrophilic material is eptfe film, and its thickness is 0.01-0.02mm;
Wherein, the hydrophobic material is the mixture of porous silica gel and carborundum, the volume of the porous silica gel and carborundum Than for 1:1.25, the consumption of the porous silica gel is 1g/m2, the fineness of the porous silica gel and carborundum is between 1250- Between 2500 mesh.
2. a kind of preparation method of gas permeability copper air-conditioner foil as claimed in claim 1, it is characterised in that the Copper Foil is by T2 Copper is into comprising the following steps:
S1, preparation meet the Copper Foil of thickness, and the Copper Foil is etched, and make the Copper Foil of the densely covered through hole of Copper Foil, institute The thickness for stating Copper Foil is 0.01-0.02mm, and the quantity of the through hole reaches 5000-9000/m2, the diameter of the through hole is small In 0.03mm;
S2, the one side of eptfe film and step the S1 Copper Foil prepared is combined using adhesive, wherein, institute The thickness for stating eptfe film is 0.01-0.02mm, and the composite pressure used is 3Kg/cm3, combined temp is 80 DEG C, hauling speed is 2m/s, and the consumption of adhesive is 6g/m2
S3, the another side coating polyethylene alcohol by Copper Foil, are combined with porous silica gel and carborundum, wherein, the microporous silicon The volume ratio of glue and carborundum is 1:1.25, the consumption of the porous silica gel is 1g/m2, the porous silica gel and carborundum it is thin Degree is 1250-2500 mesh, and the composite pressure used is 8Kg/cm3, combined temp is 85 DEG C, and hauling speed is 1m/s, is glued The consumption of mixture is 5g/m2
3. the preparation method of gas permeability copper air-conditioner foil as claimed in claim 2, it is characterised in that the copper in the step S1 The preparation method of paper tinsel is:It is 1 in mass ratio by copper borate whisker and T2 copper powders:20 carry out mixing and ball milling, by the powder after ball milling The cylindrical blank is sintered into cylindrical blank, the blank after sintering is answered by last isostatic cool pressing under argon atmosphere Blank of the blank after argon atmosphere resintering, resintering after pressure, multiple pressure is hot extruded into sheet material, and sheet material is in argon atmosphere Lower carry out Ageing Treatment, it is the base that may be adapted to cold rolling 3.5 ± 0.5mm thickness that the sheet material through Wetted constructures, which is continued to roll, Material, by 2 cold rolling calenderings and an etching process, obtains the ventilative copper of the densely covered through hole in surface of 0.01-0.02mm thickness Paper tinsel.
4. the preparation method of gas permeability copper air-conditioner foil as claimed in claim 3, it is characterised in that relative atmospheric is wet in melting Degree is less than 1%.
5. the preparation method of gas permeability copper air-conditioner foil as claimed in claim 3, it is characterised in that the tool of the mixing and ball milling Gymnastics is made to include:Ball milling parameter is ratio of grinding media to material 8:1, by sphere diameter, from 10mm-80mm, totally eight kinds of specifications are loaded in mixture steel ball, ball mill Rotating speed 200r/min, ball mill working method shuts down 30s to rotate forward 900s, then inverts 900s, shuts down 30s, so circulation, Ball-milling Time is 4h.
6. the preparation method of gas permeability copper air-conditioner foil as claimed in claim 3, it is characterised in that 2 cold rolling calenderings Concrete operations include:Once cold rolling is carried out under the conditions of blank temperature is less than 80 DEG C, each passage is processed using 25-35% passages Rate, by the cold rolling calendering of 6-7 passages, is rolling to 0.4 ± 0.05mm thickness, turns annealing furnace and carries out first time intermediate annealing;By Cold rolling blank after intermediate annealing carries out secondary cold-rolling, and each passage uses 35-45% pass reductions, by 4-5 passages Cold rolling calendering, is rolling to 0.01-0.02mm thickness.
7. the preparation method of gas permeability copper air-conditioner foil as claimed in claim 3, it is characterised in that the etching process step Concrete operations include:To using the aqueous solution for containing 3wt% hydrochloric acid as electrolyte by the blank of secondary cold-rolling, with liquid temperature 80 DEG C and current density 0.42A/cm2Implemented by direct current etching, this results in the Copper Foil with through hole, the insertion The quantity in hole reaches 5000-9000/m2, the diameter of the through hole is less than 0.03mm.
8. the preparation method of gas permeability copper air-conditioner foil as claimed in claim 6, it is characterised in that the tool of the annealing steps Gymnastics is made to include:The Copper Foil that process is rolled through paper tinsel is incubated 8h under 350 DEG C of annealing temperature, then under 250 DEG C of annealing temperature It is incubated 10h.
9. the preparation method of gas permeability copper air-conditioner foil as claimed in claim 2, it is characterised in that before the step S2 also Need to carry out the operation except grease:Alkali cleaning, the oil of copper foil surface prepared by cleaning step S1 are carried out by alkaline bath at 60 DEG C Fat;Wherein alkali lye pH value is 11-13;After alkali cleaning terminates, enter back into tank and carry out high temperature washing, cleaning copper rolls up the alkali of remained on surface Liquid, high temperature washing temperature is 50-60 DEG C, after washing terminates, is dried Copper Foil at 180 DEG C.
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