CN110016814A - The asymmetric Total heat exchange film of antimicrobial form, Total heat exchange machine core and total heat exchanger - Google Patents
The asymmetric Total heat exchange film of antimicrobial form, Total heat exchange machine core and total heat exchanger Download PDFInfo
- Publication number
- CN110016814A CN110016814A CN201910304606.7A CN201910304606A CN110016814A CN 110016814 A CN110016814 A CN 110016814A CN 201910304606 A CN201910304606 A CN 201910304606A CN 110016814 A CN110016814 A CN 110016814A
- Authority
- CN
- China
- Prior art keywords
- total heat
- heat exchange
- asymmetric
- antimicrobial form
- thermal conductive
- 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.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0038—Polyolefin fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/02—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with cellulose derivatives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/06—Properties of the materials having thermal properties
- D06N2209/062—Conductive
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/06—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes composite, e.g. polymers with fillers or fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The present invention provides a kind of asymmetric Total heat exchange film of antimicrobial form, Total heat exchange machine core and total heat exchangers.The asymmetric Total heat exchange film of antimicrobial form: antibacterial agent is supported on porous thermal conductive filler and obtains antibacterial porous thermal conductive filler；High molecular polymer, hygroscopicity metal salt are dissolved in solvent and obtain hydrophilic polymer solution, antibacterial porous thermal conductive filler, pore-foaming agent are mixed into obtain casting solution with hydrophilic polymer solution；Casting solution is coated on fixed non-woven fabrics on a glass, is immersed in the water and reacts to obtain basement membrane；Basement membrane is impregnated into the water, then dry the asymmetric Total heat exchange film of antimicrobial form.Total heat exchange machine core is made using the asymmetric Total heat exchange film of antimicrobial form.Total heat exchanger, including Total heat exchange machine core.The asymmetric Total heat exchange film of antimicrobial form provided by the present application, Total heat exchange machine core and total heat exchanger, thermal conductivity, moisture permeability are high, and simple process is at low cost, and antibacterial, mildew-proof effect are good, prevents secondary pollution, long service life.
Description
Technical field
The present invention relates to Total heat exchange fields, hand in particular to a kind of asymmetric Total heat exchange film of antimicrobial form, full heat
It changes planes core and total heat exchanger.
Background technique
With the enhancing and improvement of living standard of people's environmental consciousness, the requirement to indoor air quality is higher and higher.
New wind circulation is a kind of effectively method of economic improvement indoor air quality, however, big new wind ratio is but also air-conditioning energy
Consumption sharply increases, and the energy consumption for handling fresh air accounts for the 20%-40% of air-conditioning total energy consumption, southern heat it is wet summer this accounting very
To also much bigger.In order to effectively save energy, researchers constantly seek a kind of new wind-heat of low energy consumption
Wet recovery method.
Total-heat exchanger energy recovery efficiency with higher is a key technology of total heat recovery, can delay well
Solution improves the contradiction between indoor air quality comfort, thermal comfort and high energy consumption.Total-heat exchanger is relatively early in the market at present
The rotary type total heat exchanger used can recycle sensible heat and latent heat simultaneously, and efficiency is higher, but runner cost is high, contains moving component,
Poor reliability, fresh air and air draft be easy mutually doping the disadvantages of limit their promotion and application.Another kind is that heat-pump-type is complete
Heat exchanger needs to configure a series of equipment such as compressor, condenser, evaporator etc., power consumption simultaneously when in use
And cost of investment is higher, therefore development and application are subject to certain restrictions.With the development of membrane technology, it is wet that heat is carried out using film
The technology of recycling increasingly attracts people's attention.
There is that can only recycle sensible heat part, not can be carried out total heat recovery, flow is small, film layer is thick leads existing film heat exchanger
It is hot poor, the problems such as low efficiency.And the film that the prior art uses does not have antibacterial, mould proof effect, is being used for a long time
In the process, the wet air in air easily makes film surface become the breeding ground of bacteria breed, so that film surface is grown mould, no
The service life for only reducing film easily causes the secondary pollution of air simultaneously.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of asymmetric Total heat exchange film of antimicrobial form, and thermal conductivity is good, moisture permeability is high,
Simple process is at low cost, and antibacterial, mildew-proof effect are good, prevents secondary pollution, long service life.
The second object of the present invention is to provide a kind of Total heat exchange machine core, be handed over using the asymmetric full heat of antimicrobial form
It changes film to be made, the Total heat exchange machine core thermal conductivity is good, moisture permeability is high, and antibacterial, mildew-proof effect are good, long service life.
The third object of the present invention is to provide a kind of total heat exchanger, including the Total heat exchange machine core.
In order to realize the purpose of the invention, the following technical scheme is adopted:
A kind of asymmetric Total heat exchange film of antimicrobial form, preparation method includes the following steps:
A. antibacterial agent is supported on porous thermal conductive filler and obtains antibacterial porous thermal conductive filler；
B. high molecular polymer, hygroscopicity metal salt are dissolved in solvent and are configured to hydrophilic polymer solution, then will
The antibacterial porous thermal conductive filler, pore-foaming agent are mixed with the hydrophilic polymer solution, and heating, stirring, standing obtain casting film
Liquid；
C. the casting solution is coated on fixed non-woven fabrics on a glass, is then immersed in water, phase conversion reaction
After obtain basement membrane；The basement membrane is removed and placed in water and is impregnated, the asymmetric Total heat exchange of the antimicrobial form is then dried to obtain
Film.
Selecting has the porous material of thermally conductive function as heat filling, can avoid heat filling plug-hole, while heat conduction material
Expect itself possessed high-specific surface area and flourishing gap structure, can greatly improve the pore-size distribution of membrane material, it can be big
The heating conduction of width raising film.Using porous thermal conductive filler as carrier loaded antibacterial agent, Total heat exchange film is made to play thermal conductivity
While energy, there is antibacterial effect.Membrane material is prepared by one-step method, compared with traditional preparation method, preparation flow simplifies,
Equipment simplifies, and cost reduces.The machine of film is effectively improved by addition high molecular polymer, hygroscopicity metal salt and pore-foaming agent
Tool performance increases substantially its intensity, while the moisture-inhibiting efficiency of film improves 90%~150%, Jin Erti than conventional composite film
Rise the enthalpy exchange efficiency of film.
Preferably, the porous thermal conductive filler is one of carbon nanotube, active carbon, activated carbon fibre or a variety of, institute
Stating antibacterial agent is one of compound containing silver ion, copper ion or zinc ion or a variety of mixtures；Preferably, described
The iron content of carbon nanotube is 3-10wt%, and the iron content of the active carbon and the activated carbon fibre is 8-20wt%, described
The dosage of antibacterial agent is the 0.5-1% of the porous thermal conductive filler weight.
In the case where being existed simultaneously with hydrophilic polymer, using carbon nanotube, active carbon, activated carbon fibre, especially
Using the carbon nanotube of high Fe content, active carbon, activated carbon fibre, the thermal coefficient of film can be increased substantially.Containing silver ion,
Compound of copper ion or zinc ion such as silver nitrate, copper sulphate, copper chloride, zinc nitrate, zinc sulfate etc..
In the particular embodiment, the iron content of carbon nanotube can be 3wt%, 4wt%, 5wt%, 6wt%, 7wt%,
Arbitrary value between 8wt%, 9wt%, 10wt% and 3-10wt%；Active carbon and the iron content of activated carbon fibre can be
8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 14wt%, 15wt%, 16wt%, 18wt%, 19wt%, 20wt% with
And the arbitrary value between 8-20wt%；The dosage of antibacterial agent can for porous thermal conductive filler weight 0.5%, 0.6%, 0.7%,
0.8%, the arbitrary value between 0.9%, 1.0% and 0.5-1%.
Preferably, the process of the load are as follows:
Antibacterial agent, which is added to the water, dissolves it sufficiently, is then sprayed onto the porous thermal conductive filler, stands, then
30-40min is calcined under the conditions of 300-500 DEG C, obtains the antibacterial porous thermal conductive filler.
High-temperature process is carried out in the cohesive process of Heat Conduction Material and antibacterial agent simultaneously, has it not during immersion etc.
The precipitation of antibacterial agent.By sprinkling rather than impregnating loads antibacterial agent, can both make load so more evenly, save simultaneously
The dosage of antibacterial agent and water not will cause unnecessary waste.The amount of water used herein by porous thermal conductive filler water capacity Q1
Determine that water consumption is equal to the dosage W1 of water capacity Q1* porous thermal conductive filler with the dosage W1 of porous thermal conductive filler.It is more by calculating
The water capacity of hole heat filling can accurately hold its adsorbance to aqueous solution, be configured according to this adsorption capacity certain density
Antibacterial agent can be such that configured solution is all adsorbed.This method has saved water consumption compared with equi-volume impregnating, avoids
The waste of antibacterial agent, while the discharge and waste of remaining antimicrobial are not had.
Preferably, the high molecular polymer is one of cellulose acetate, hydroxypropyl cellulose, the hygroscopicity gold
Category salt is one of lithium chloride, calcium chloride, sodium chloride, potassium chloride, magnesium chloride, and the solvent is that mass fraction is 10-60%
Acetic acid or aqueous formic acid, the pore-foaming agent be polyvinyl alcohol or polyvinylpyrrolidone；Preferably, the pore-foaming agent is poly-
Vinyl alcohol -2000, in the hydrophilic polymer solution, the mass percent of the high molecular polymer is 10-25%, described
The quality of hygroscopicity metal salt is 1.5-15% than percentage.
To the preferred of high molecular polymer, hygroscopicity metal salt, solvent, the type of pore-foaming agent and dosage, help to enhance
The water absorbing properties of casting solution, processability promote enthalpy exchange efficiency.
In an optional embodiment, the mass fraction of acetic acid aqueous solution or aqueous formic acid can for 10%,
20%, the arbitrary value between 30%, 40%, 50%, 60% and 10-60%；In hydrophilic polymer solution, high molecular polymerization
The mass percent of object can arbitrary value between 10%, 15%, 20%, 25% and 10-25%, hygroscopicity metal salt
Quality than percentage can for 1.5%, 2.0%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%,
14%, the arbitrary value between 15% and 1.5-15%.
It is further preferred that the additive amount of the antibacterial porous thermal conductive filler is the 1- of the hydrophilic polymer solution
10wt%, the additive amount of the pore-foaming agent are the 0.5-2wt% of the hydrophilic polymer solution.
In an optional embodiment, the additive amount of antibacterial porous thermal conductive filler is hydrophilic polymer solution
1%, the arbitrary value between 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10% and 1-10wt%；The addition of pore-foaming agent
Amount is the arbitrary value between 0.5%, 1.0%, 1.5%, 2.0% and 0.5-2wt% of hydrophilic polymer solution.
It is further preferred that the temperature of the heating is 40-80 DEG C, the time of the heating is 4-6h, described to rest on
It is carried out under room temperature, the time of the standing is 6-12h.
Preferably, the non-woven fabrics is one of terylene, polypropylene fibre and acrylic fibers；The casting solution is coated in the non-woven fabrics
On with a thickness of 80-110 μm.
In an enforceable scheme, casting solution be coated in non-woven fabrics on thickness can for 80 μm, 90 μm, 100 μm,
Arbitrary value between 110 μm and 80-110 μm.
Optionally, the time of the immersion is 12-36h；The temperature of the drying is 60-80 DEG C, time 2-4h.
A kind of Total heat exchange machine core is made using the asymmetric Total heat exchange film of antimicrobial form.
A kind of total heat exchanger, including the Total heat exchange machine core.
Compared with prior art, the invention has the benefit that
(1) film-strength is high, thermal conductivity is good, moisture permeability is high；
(2) simple process and low cost；
(3) there is antibacterial, mildew-proof effect, prevent secondary pollution；
(4) long service life.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
The carbon nanotube that 100g iron content is 3wt% is weighed, testing its water capacity is 70%.It measures 70g (100g*70%)
Deionized water, thereto be added 0.5g (100g*0.5%) silver nitrate, be sufficiently stirred to form silver nitrate solution, by its uniformly
It is sprayed onto carbon nanotube, stands 6h.Then it is calcined into 30min under the conditions of 400 DEG C, obtains antibacterial porous thermal conductive filler.
The acetic acid aqueous solution that 500ml mass fraction is 50% is measured, cellulose acetate is added thereto, lithium chloride is configured to
Hydrophilic polymer solution controls in hydrophilic polymer solution, and the mass percent of cellulose acetate is 25%, lithium chloride
Quality is 1.5% than percentage；Then antibacterial porous thermal conductive filler and Polyethylene glycol-2000 is added, controls antibacterial porous thermal conductive
The additive amount of filler is the 10wt% of hydrophilic polymer solution, and the additive amount of Polyethylene glycol-2000 is that hydrophilic polymer is molten
The 0.5wt% of liquid；It is sufficiently stirred and reacts 5h in 60 DEG C of water-baths, and static 12h at normal temperature, form uniform casting film
Liquid.By casting solution coated on fixed terylene non-woven fabric on a glass, controlling wet-film thickness with blade applicator is 90 μm, then
It is immersed in clean water, makes that phase conversion reaction occurs between film and water phase, the film molding after reaction simultaneously divides with glass plate automatically
From basement membrane is obtained, basement membrane is dipped into 15h in clean water and removes excess of solvent, dry 4h is then placed in 60 DEG C of baking ovens, obtains
The asymmetric Total heat exchange film of antimicrobial form.
The Total heat exchange film, can be fabricated to flat membrane component.Exchange area about 15m2.It is penetrated through detection monofilm carbon dioxide
Rate is 2.3 × 105cm3/m2Total heat exchange machine core is made in day0.1MPa, in fresh air and exhaust air rate about 350m3/ h condition
Under, temperature exchange rate is 75%, and enthalpy exchange rate is 73.2%；Antibacterial and mouldproof performance test: to escherichia coli and golden yellow
Staphylococcus antibiotic rate > 99.2%.
Embodiment 2
The coaly activated carbon that 100g iron content is 10wt% is weighed, testing its water capacity is 90%.Measure 90g (100g*
90%) zinc nitrate of 1g (100g*1%) is added thereto, is sufficiently stirred to form zinc nitrate solution for deionized water, by it
It is even to be sprayed on coaly activated carbon, stand 6h.Then it is calcined into 40min under the conditions of 300 DEG C, obtains antibacterial porous thermal conductive and fills out
Material.
The acetic acid aqueous solution that 500ml mass fraction is 60% is measured, cellulose acetate is added thereto, calcium chloride is configured to
Hydrophilic polymer solution controls in hydrophilic polymer solution, and the mass percent of cellulose acetate is 15%, calcium chloride
Quality is 5% than percentage；Then antibacterial porous thermal conductive filler and polyvinylpyrrolidone is added, control antibacterial porous thermal conductive is filled out
The additive amount of material is the 5wt% of hydrophilic polymer solution, and the additive amount of polyvinylpyrrolidone is hydrophilic polymer solution
1wt%；It is sufficiently stirred and reacts 6h in 40 DEG C of water-baths, and static 6h at normal temperature, form uniform casting solution.It will casting
Film liquid is 110 μm with blade applicator control wet-film thickness, is then immersed in coated on fixed terylene non-woven fabric on a glass
In clean water, make that phase conversion reaction occurs between film and water phase, the film molding after reaction is simultaneously automatically isolated with glass plate
Basement membrane is dipped into 36h in clean water and removes excess of solvent, is then placed in 70 DEG C of baking ovens dry 3h, obtain antimicrobial form by basement membrane
Asymmetric Total heat exchange film.
The Total heat exchange film, can be fabricated to flat membrane component.Exchange area about 10m2.It is penetrated through detection monofilm carbon dioxide
Rate is 6.9 × 104cm3/m2Total heat exchange machine core is made in day0.1MPa, in fresh air and exhaust air rate about 400m3/ h condition
Under, temperature exchange rate is 89%, and enthalpy exchange rate is 83%；Antibacterial and mouldproof performance test: to escherichia coli and golden yellow Portugal
Grape coccus antibiotic rate > 99.9%.
Embodiment 3
The activated carbon fibre that 100g iron content is 8wt% is weighed, testing its water capacity is 95%.Measure 95g (100g*
95%) copper sulphate of 0.8g (100g*0.8%) is added thereto, is sufficiently stirred to form copper-bath for deionized water, will
It is uniformly sprayed onto carbon nanotube, stands 6h.Then it is calcined into 35min under the conditions of 500 DEG C, obtains antibacterial porous thermal conductive and fills out
Material.
Taking 500ml mass fraction is 50% aqueous formic acid, hydroxypropyl cellulose is added thereto, sodium chloride is configured to
Hydrophilic polymer solution controls in hydrophilic polymer solution, and the mass percent of hydroxypropyl cellulose is 10%, sodium chloride
Quality than percentage be 15%；Then antibacterial porous thermal conductive filler and Polyethylene glycol-2000 is added, controls antibacterial porous thermal conductive
The additive amount of filler is the 1wt% of hydrophilic polymer solution, and the additive amount of Polyethylene glycol-2000 is hydrophilic polymer solution
2wt%；It is sufficiently stirred and reacts 4h in 80 DEG C of water-baths, and static 10h at normal temperature, form uniform casting solution.It will
Casting solution is 80 μm with blade applicator control wet-film thickness, is then immersed in coated on fixed terylene non-woven fabric on a glass
Into clean water, make that phase conversion reaction occurs between film and water phase, the film after reaction is formed and separated with glass plate automatically
To basement membrane, basement membrane is dipped into 12h in clean water and removes excess of solvent, dry 2h is then placed in 80 DEG C of baking ovens, obtains antibacterial
The asymmetric Total heat exchange film of type.
The Total heat exchange film, can be fabricated to flat membrane component.Exchange area about 15m2.It is penetrated through detection monofilm carbon dioxide
Rate is 1.6 × 104cm3/m2Total heat exchange machine core is made in day0.1MPa, in fresh air and exhaust air rate about 200m3/ h condition
Under, temperature exchange rate is 71%, and enthalpy exchange rate is 64%；Antibacterial and mouldproof performance test: to escherichia coli and golden yellow Portugal
Grape coccus antibiotic rate > 99%.
Comparative example 1
Difference from example 1 is that not adding antibacterial porous thermal conductive filler when preparing casting solution.
Total heat exchange film made from comparative example 1 is fabricated to flat membrane component, exchange area about 15m2.Total heat exchange is made
Machine core, in fresh air and exhaust air rate about 350m3Under/h condition, temperature exchange rate is 21%, and enthalpy exchange rate is 13.2%；Antibacterial and mouldproof
Performance test: to escherichia coli and staphylococcus aureus without anti-microbial property.
Comparative example 2
With embodiment 2 the difference is that, when preparing casting solution, antibacterial porous thermal conductive filler is not added.
Total heat exchange film made from comparative example 2 is fabricated to flat membrane component, exchange area about 10m2.Total heat exchange is made
Machine core, in fresh air and exhaust air rate about 400m3Under/h condition, temperature exchange rate is 61.3%, and enthalpy exchange rate is 34.2%；Antibacterial is anti-
Mould performance test: to escherichia coli and staphylococcus aureus without anti-microbial property.
Comparative example 3
With embodiment 3 the difference is that, when preparing casting solution, antibacterial porous thermal conductive filler is not added.
Total heat exchange film made from comparative example 3 is fabricated to flat membrane component, exchange area about 15m2.Total heat exchange is made
Machine core, in fresh air and exhaust air rate about 200m3Under/h condition, temperature exchange rate is 51%, and enthalpy exchange rate is 23.1%；Antibacterial and mouldproof
Performance test: to escherichia coli and staphylococcus aureus without anti-microbial property.
Compared in the prior art using graphene, aluminium nitride or silicon carbide as the scheme of heat filling, the application is provided
The asymmetric Total heat exchange film of antimicrobial form, heat filling has flourishing pore structure, is capable of forming good thermal conducting path, i.e.,
Make in the case where additive amount is relatively large will not micropore in blocks film, perspective rate is higher, excellent in mechanical performance.Traditional
The material thermal conductivity of composite membrane technology production generally in 0.1~1W/mK, certain iron content provided in the present invention it is porous
Heat filling can the effective solution above problem, while thermal coefficient being made to be promoted to 15-40W/mK.
The asymmetric Total heat exchange film of antimicrobial form provided by the present application, Total heat exchange machine core and total heat exchanger, thermal conductivity, thoroughly
Humidity it is high, it can be achieved that sensible heat and latent heat recycled in its entirety, rate of heat exchange is high, and simple process is at low cost, and antibacterial, mildew-proof effect are good,
Prevent secondary pollution, long service life.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention
Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of asymmetric Total heat exchange film of antimicrobial form, which is characterized in that preparation method includes the following steps:
A. antibacterial agent is supported on porous thermal conductive filler and obtains antibacterial porous thermal conductive filler；
B. high molecular polymer, hygroscopicity metal salt are dissolved in solvent and are configured to hydrophilic polymer solution, it then will be described
Antibacterial porous thermal conductive filler, pore-foaming agent are mixed with the hydrophilic polymer solution, and heating, stirring, standing obtain casting solution；
C. the casting solution is coated on fixed non-woven fabrics on a glass, is then immersed in water, after phase conversion reaction
To basement membrane；The basement membrane is removed and placed in water and is impregnated, the asymmetric Total heat exchange film of the antimicrobial form is then dried to obtain.
2. the asymmetric Total heat exchange film of antimicrobial form according to claim 1, which is characterized in that the porous thermal conductive filler is
One of carbon nanotube, active carbon, activated carbon fibre are a variety of, the antibacterial agent be containing silver ion, copper ion or zinc from
One of compound of son or a variety of mixtures；Preferably, the iron content of the carbon nanotube is 3-10wt%, the work
Property charcoal and the iron content of the activated carbon fibre be 8-20wt%, the dosage of the antibacterial agent is the porous thermal conductive filler weight
0.5-1%.
3. the asymmetric Total heat exchange film of antimicrobial form according to claim 2, which is characterized in that the process of the load are as follows:
Antibacterial agent, which is added to the water, dissolves it sufficiently, is then sprayed onto the porous thermal conductive filler, stands, then exists
30-40min is calcined under the conditions of 300-500 DEG C, obtains the antibacterial porous thermal conductive filler.
4. the asymmetric Total heat exchange film of antimicrobial form according to claim 1, which is characterized in that the high molecular polymer is
One of cellulose acetate, hydroxypropyl cellulose, the hygroscopicity metal salt are lithium chloride, calcium chloride, sodium chloride, chlorination
One of potassium, magnesium chloride, the solvent are the acetic acid or aqueous formic acid that mass fraction is 10-60%, and the pore-foaming agent is
Polyvinyl alcohol or polyvinylpyrrolidone；Preferably, the pore-foaming agent is polyvinyl alcohol -2000, and the hydrophilic polymer is molten
In liquid, the mass percent of the high molecular polymer is 10-25%, and the quality of the hygroscopicity metal salt is than percentage
1.5-15%.
5. the asymmetric Total heat exchange film of antimicrobial form according to claim 4, which is characterized in that the antibacterial porous thermal conductive is filled out
The additive amount of material is the 1-10wt% of the hydrophilic polymer solution, and the additive amount of the pore-foaming agent is the hydrophilic polymer
The 0.5-2wt% of object solution.
6. the asymmetric Total heat exchange film of antimicrobial form according to claim 5, which is characterized in that the temperature of the heating is
40-80 DEG C, the time of the heating is 4-6h, and the standing carries out at normal temperature, and the time of the standing is 6-12h.
7. the asymmetric Total heat exchange film of antimicrobial form according to claim 1, which is characterized in that the non-woven fabrics be terylene,
One of polypropylene fibre and acrylic fibers；The casting solution be coated in the non-woven fabrics on a thickness of 80-110 μm.
8. the asymmetric Total heat exchange film of antimicrobial form according to claim 1-7, which is characterized in that the immersion
Time is 12-36h；The temperature of the drying is 60-80 DEG C, time 2-4h.
9. a kind of Total heat exchange machine core, which is characterized in that use the asymmetric full heat of the described in any item antimicrobial forms of claim 1-8
Exchange membrane is made.
10. a kind of total heat exchanger, which is characterized in that including Total heat exchange machine core as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304606.7A CN110016814B (en) | 2019-04-16 | 2019-04-16 | Antibacterial asymmetric total heat exchange membrane, total heat exchange core and total heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304606.7A CN110016814B (en) | 2019-04-16 | 2019-04-16 | Antibacterial asymmetric total heat exchange membrane, total heat exchange core and total heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110016814A true CN110016814A (en) | 2019-07-16 |
| CN110016814B CN110016814B (en) | 2021-07-13 |
Family
ID=67191605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910304606.7A Active CN110016814B (en) | 2019-04-16 | 2019-04-16 | Antibacterial asymmetric total heat exchange membrane, total heat exchange core and total heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110016814B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657509A (en) * | 2019-10-14 | 2020-01-07 | 东南大学 | Total heat recovery type fresh air purification system based on nanofluid |
| CN110743378A (en) * | 2019-10-29 | 2020-02-04 | 吉金学 | Modified wet film, preparation method thereof and application of modified wet film in manufacturing of heat exchange device of air conditioner external unit |
| WO2021216010A1 (en) * | 2020-04-22 | 2021-10-28 | Enerama Çevre Teknoloji̇leri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | An air cleaning device |
| CN115259271A (en) * | 2022-07-27 | 2022-11-01 | 西安理工大学 | Preparation method of boron nitride aerogel filter core material |
| CN115259271B (en) * | 2022-07-27 | 2024-04-19 | 西安理工大学 | Preparation method of boron nitride aerogel filter element material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376822A (en) * | 2002-04-30 | 2002-10-30 | 中山大学 | Process for preparing antibacterial fibre of activated carbon containing nano silver particles |
| CN1724138A (en) * | 2005-06-22 | 2006-01-25 | 中山大学 | Porous carbon adsorbing agent containing nano zinc oxide micropartical and its preparation process and application |
| CN103285740A (en) * | 2012-02-23 | 2013-09-11 | 中国科学院宁波材料技术与工程研究所 | Preparation method of antibacterial double-layer hollow fibrous membrane |
| CN103736467A (en) * | 2014-01-10 | 2014-04-23 | 浙江朝晖过滤技术股份有限公司 | Preparation method of activated carbon fiber net of air purifier |
| CN103877870A (en) * | 2013-01-30 | 2014-06-25 | 中国科学院宁波材料技术与工程研究所 | Total heat exchange membrane with antibacterial and mildewproof functions and total heat exchanger |
| CN105597566A (en) * | 2016-03-04 | 2016-05-25 | 山东美诺邦马节能科技有限公司 | Preparation method and application of novel total heat exchange film |
| CN106221150A (en) * | 2016-08-29 | 2016-12-14 | 佛山市高明区尚润盈科技有限公司 | A kind of preparation method of PET/PTT alloy capable of purifying air |
| CN109287658A (en) * | 2018-10-30 | 2019-02-01 | 河海大学 | A kind of carrying silver antimicrobials and preparation method thereof |
-
2019
- 2019-04-16 CN CN201910304606.7A patent/CN110016814B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376822A (en) * | 2002-04-30 | 2002-10-30 | 中山大学 | Process for preparing antibacterial fibre of activated carbon containing nano silver particles |
| CN1724138A (en) * | 2005-06-22 | 2006-01-25 | 中山大学 | Porous carbon adsorbing agent containing nano zinc oxide micropartical and its preparation process and application |
| CN103285740A (en) * | 2012-02-23 | 2013-09-11 | 中国科学院宁波材料技术与工程研究所 | Preparation method of antibacterial double-layer hollow fibrous membrane |
| CN103877870A (en) * | 2013-01-30 | 2014-06-25 | 中国科学院宁波材料技术与工程研究所 | Total heat exchange membrane with antibacterial and mildewproof functions and total heat exchanger |
| CN103736467A (en) * | 2014-01-10 | 2014-04-23 | 浙江朝晖过滤技术股份有限公司 | Preparation method of activated carbon fiber net of air purifier |
| CN105597566A (en) * | 2016-03-04 | 2016-05-25 | 山东美诺邦马节能科技有限公司 | Preparation method and application of novel total heat exchange film |
| CN106221150A (en) * | 2016-08-29 | 2016-12-14 | 佛山市高明区尚润盈科技有限公司 | A kind of preparation method of PET/PTT alloy capable of purifying air |
| CN109287658A (en) * | 2018-10-30 | 2019-02-01 | 河海大学 | A kind of carrying silver antimicrobials and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657509A (en) * | 2019-10-14 | 2020-01-07 | 东南大学 | Total heat recovery type fresh air purification system based on nanofluid |
| CN110743378A (en) * | 2019-10-29 | 2020-02-04 | 吉金学 | Modified wet film, preparation method thereof and application of modified wet film in manufacturing of heat exchange device of air conditioner external unit |
| WO2021216010A1 (en) * | 2020-04-22 | 2021-10-28 | Enerama Çevre Teknoloji̇leri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | An air cleaning device |
| CN115259271A (en) * | 2022-07-27 | 2022-11-01 | 西安理工大学 | Preparation method of boron nitride aerogel filter core material |
| CN115259271B (en) * | 2022-07-27 | 2024-04-19 | 西安理工大学 | Preparation method of boron nitride aerogel filter element material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110016814B (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110016814A (en) | The asymmetric Total heat exchange film of antimicrobial form, Total heat exchange machine core and total heat exchanger | |
| CN103877870B (en) | There is Total heat exchange film and the total-heat exchanger of antibacterial and antimildew function | |
| CN101824307B (en) | Composite phase-change energy storage material for microcapsule and preparation method thereof | |
| CN103771808B (en) | A kind of phase-transition heat-storage sand-cement slurry containing rubber powder and preparation method thereof | |
| CN105504661B (en) | A kind of remote controller casing material and preparation method with antibacterial functions | |
| CN105879706A (en) | Graphene oxide-polymer hybridized all-heat exchange membrane and preparation method and application thereof | |
| CN106521975B (en) | A kind of Total heat exchange film and preparation method thereof | |
| CN101693795A (en) | Pasty heat-insulating elastic putty | |
| CN105462381A (en) | Temperature and humidity regulating type composite coating material and preparation method thereof | |
| CN105586012B (en) | A kind of aliphatic acid/PERFORMANCE OF MODIFIED VERMICULITE composite phase-change energy storage material and preparation method thereof | |
| CN102741469A (en) | Polymer composite materials for building air conditioning or dehumidification and preparation method thereof | |
| CN104449591A (en) | Nanoscale dibasic fatty acid/SiO2 composite phase change material having temperature-regulating and humidity-regulating properties and preparation method thereof | |
| CN103274718B (en) | Temperature-sensitive humidity-sensitive functional building material and preparation method thereof | |
| CN103288411B (en) | Environment-friendly passive type temperature controlling and humidifying material and preparation method thereof | |
| CN106278129B (en) | A kind of fast vigour wet stock of 3D printing magnesium phosphate cement and preparation method thereof | |
| CN101096298A (en) | Organic phase-change composite expanding perlite and preparation method thereof | |
| CN112608053A (en) | Modified aggregate, preparation method and concrete using modified aggregate | |
| CN109337481A (en) | A kind of nano heat-insulating antibiotic paint and preparation method thereof | |
| CN110964280A (en) | Moisture-permeable and bacteriostatic composite film for total heat exchanger and preparation method thereof | |
| CN114014631A (en) | Closed-cell perlite composite thermal insulation material and preparation method thereof | |
| CN109575508A (en) | A kind of phenolic resin compound insulating material and preparation method thereof | |
| CN101096297A (en) | Organic phase-change composite light-weight sintering ceramic particle and preparation method thereof | |
| CN101096300A (en) | Organic phase-change composite coal powder ceramic particle and preparation method therefor | |
| CN107936668A (en) | A kind of novel environment-friendly heat insulating coating and preparation method thereof | |
| CN110743378A (en) | Modified wet film, preparation method thereof and application of modified wet film in manufacturing of heat exchange device of air conditioner external unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |