CN115162022B - High-heat-flux heat-conducting breathable isothermal cloth and preparation method thereof - Google Patents
High-heat-flux heat-conducting breathable isothermal cloth and preparation method thereof Download PDFInfo
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- CN115162022B CN115162022B CN202210708906.3A CN202210708906A CN115162022B CN 115162022 B CN115162022 B CN 115162022B CN 202210708906 A CN202210708906 A CN 202210708906A CN 115162022 B CN115162022 B CN 115162022B
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- 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
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- 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
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- 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
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- 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
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- 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
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- 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
- D06N2209/12—Permeability or impermeability properties
- D06N2209/121—Permeability to gases, adsorption
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Abstract
The invention discloses a high-heat-flux heat-conducting breathable isothermal cloth and a preparation method thereof, wherein the isothermal cloth is prepared from a high-heat-conducting aqueous polyurethane material, and a raw material composition of the material comprises the following components in parts by mass: aqueous polyurethane: 100 parts; graphene oxide anchored with metal ions: 0.02-3 parts; auxiliary agent: 0.1-15 parts; a reducing agent; wherein the mass of the reducing agent is 0.3-1.5% of the mass of the graphene oxide anchored with the metal ions. The invention firstly proposes to adopt the high-heat-conductivity water-based polyurethane material, improve the heat conductivity coefficient of the high-heat-flux heat-conductivity breathable isothermal cloth, so that heat can be quickly and effectively transferred in a cloth surface, and meanwhile, the high-heat-conductivity water-based polyurethane material coating of the interconnected heat-conducting network on the surface of the cloth has a hollowed-out structure, so that the cloth has air permeability.
Description
Technical Field
The invention belongs to the field of material modification, and particularly relates to a high-heat-flux heat-conducting breathable isothermal fabric and a preparation method thereof.
Background
In recent years, comfortable and cool cloth has higher heat flux, and particularly sportswear prepared by the cloth can bring rapid heat dissipation comfort to a wearer, and is touted by the masses. The efficient preparation method enables the cloth to be rapidly marketed. Gunasekra, perera et al use a simple dip drying method to coat graphene oxide on a fabric, then the coated fabric reacts with an aqueous solution of a reducing agent to reduce the graphene oxide, and the thermal conductivity of the obtained fabric is improved by 55% compared with that of a fabric without the coating, but the thermal conductivity of the fabric is remarkably improved (Modification of Thermal Conductivity of Cotton Fabric Using Graphene, moratuwa Engineering Research Conference). Guan, wang et al functionalized polyester fabrics with SWCNTs (Multi-walled carbon tubes) by coating with polybutyl acrylate emulsion as binder. Because SWCNTs have a large aspect ratio and uniform dispersion, a highly efficient conductive network is formed. At an input voltage of 2.5V, a steady state temperature of 40℃was reached within 7s, exhibiting good electrothermal properties (MATERIALS, DOI:10.3390/ma 14164616). However, the effect is not very obvious by coating the heat conducting medium to improve the heat conducting coefficient; the conductive coating is powered by electric heating to generate heat, so that an external power supply is needed, and the conductive coating is only suitable for use in cold weather.
Graphene is a two-dimensional carbon material with a high thermal conductivity (5300W/m·k). In 2004, the scientists of Manchester university, england, andery sea and Constant Nor Wo Xiao love, have exfoliated graphene from graphite, demonstrating for the first time the true presence of graphene. Due to its SP 2 The hybridized carbon atoms form a honeycomb-shaped planar structure in a hexagonal mode, only one layer of carbon atoms are connected through large pi bonds, so that the graphene has extremely high transparency, the light transmittance of single-layer graphene can reach 97.7%, and the electron mobility exceeds 15000cm 2 The resistance of the alloy is only 10 < -6 > omega/cm, and the like, and the alloy has excellent physical and chemical properties and wide application prospect in various fields.
The functionalized graphene (functionalized graphene) is prepared by modifying graphene by physical or chemical means to have a function which is not possessed by the graphene itself or to strengthen the functionality of the graphene and the graphene derivative. The aqueous polyurethane (waterborne polyurethane) is emulsion with stable state, which is formed by taking water as a disperse phase, taking polyurethane as a continuous phase and adding various auxiliary agents such as dispersing agent, flatting agent, defoaming agent and the like. The aqueous polyurethane uses water as a dispersing agent, does not contain volatile toxic solvents, accords with the green chemical category, and is increasingly applied to the fields of shoes, clothing, electronics, automobiles and the like.
The high heat flux heat-conducting breathable isothermal cloth (High heat flux thermal conductivity breathable isothermal cloth) has an efficient heat conduction function, and can achieve isothermal effect in plane quickly and simultaneously has breathability. Along with the development of society, the demands of people on material life are higher and higher, and the clothing functionalization is an important content for people to the material life. Under the high-temperature environment, rapid heat dispersion is an important condition for improving human comfort, and the fabric with high heat conductivity coefficient is the basis of rapid heat dispersion. In cold environments, the heat distribution of the static human body in various parts of the body is uneven, such as the temperature of limbs is obviously lower than that of the chest, so that the clothing made of the cloth with the high heat conduction system in the surface can transfer the heat of the part with higher body temperature to the part with lower body temperature to a certain extent.
Disclosure of Invention
In order to solve the problem of small heat flux in the existing cloth surface, the invention provides a high heat flux heat conduction and ventilation isothermal cloth and a preparation method thereof. In the high-heat-conductivity aqueous polyurethane material coating, the graphene oxide anchored with metal ions is reduced into reduced graphene oxide anchored with metal particles, and then uniformly dispersed in the aqueous polyurethane matrix, and the reduced graphene oxide anchored with metal particles are mutually connected to form a three-dimensional interconnected heat-conducting network, so that the three-dimensional reduced graphene oxide anchored with metal particles has higher contact density and higher heat-conducting efficiency in the aqueous polyurethane matrix compared with the two-dimensional graphene nano sheets. In order to achieve the ventilation effect of the high-heat-flux heat-conducting ventilation isothermal cloth, the surface of the high-heat-flux heat-conducting ventilation isothermal cloth is provided with hollowed-out patterns (such as hexagonal shapes), and the hollowed-out parts are used for ventilation, so that the high-heat-flux heat-conducting ventilation isothermal cloth has excellent ventilation. The method also adopts the brushing equipment, and the brushing equipment comprises a brushing tool, a dryer and a compacting roller according to the characteristics of the high-heat-conductivity water-based polyurethane material, so that the production efficiency can be greatly improved and the cost can be reduced while the high-heat-flux heat-conductivity breathable isothermal cloth is prepared.
In order to achieve the above experimental purposes, the invention is realized by the following technical scheme:
the high-heat-conductivity aqueous polyurethane material comprises the following raw material compositions in parts by mass:
aqueous polyurethane: 100 parts;
graphene oxide anchored with metal ions: 0.02-3 parts;
auxiliary agent: 0.1-15 parts;
a reducing agent;
wherein the mass of the reducing agent is 0.3-1.5% of the mass of the graphene oxide anchored with the metal ions.
According to the invention, the raw material composition of the material further comprises an aqueous polyurethane curing agent: 0.1-7 parts.
According to the invention, the auxiliary agent refers to a substance capable of changing the thixotropic property, viscosity, presence or absence of bubbles and other physical properties of the high-heat-conductivity aqueous polyurethane material. The auxiliary agent is at least one selected from a thickening agent, an emulsifying agent, a defoaming agent, a leveling agent and a thixotropic agent; the coating operation is convenient, and the quality of the high-heat-conductivity aqueous polyurethane material is improved. Wherein the thickener, emulsifier, leveling agent, defoamer and thixotropic agent may all be selected from adjuvants known in the art and in known amounts.
Preferably, the thickener is a cellulose ether thickener.
Preferably, the emulsifier is a propylene glycol fatty acid ester.
Illustratively, the leveling agent is, for example, a water-soluble silicone oil.
Illustratively, the defoamer is, for example, polyoxyethylene polyoxypropylene amine ether.
Illustratively, the thixotropic agent is, for example, fumed silica.
Illustratively, the aqueous polyurethane curative is, for example, aqueous polyurethane curative HP-106 (e.g., from Hua Fenghua brocade).
Illustratively, the adjuvant is used in an amount of 0.3 to 12 parts, for example 0.3, 1, 2, 3, 4, 5, 6, 8, 10, 11 or 12 parts.
Preferably, the reducing agent is a compound capable of abstracting a graphene oxide surface active group (including an oxygen-containing functional group such as a hydroxyl group, a carboxyl group, an epoxy group, etc.), so that a defect at the position of the graphene oxide active group is reduced to a benzene ring structure, and for example, at least one of hydrazine hydrate, ascorbic acid, sodium borohydride, etc. is included.
Preferably, the raw material composition of the material comprises the following components in parts by mass:
aqueous polyurethane: 100 parts;
graphene oxide anchored with metal ions: 0.05-1.5 parts;
leveling agent: 0.5-4 parts;
defoaming agent: 0.05-0.5 part;
thixotropic agent: 0.05-0.6 part;
aqueous polyurethane curing agent: 1-6 parts;
a reducing agent;
the mass of the reducing agent is 0.5-1.2% of that of the graphene oxide anchored with the metal ions.
According to the present invention, the metal is at least one of copper, iron, aluminum, silver, and the like.
According to the present invention, the graphene oxide anchoring with metal ions is 0.05 part, 0.08 part, 0.1 part, 0.12 part, 0.15 part, 0.18 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.2 part or 1.5 part by mass.
According to the invention, the leveling agent is 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.2 part, 1.5 part, 2 parts, 2.5 parts, 3 parts, 3.5 parts or 4 parts by mass.
According to the invention, the defoamer is 0.05 part, 0.08 part, 0.1 part, 0.12 part, 0.15 part, 0.18 part, 0.2 part, 0.3 part, 0.4 part or 0.5 part by mass.
According to the invention, the thixotropic agent is 0.05 part, 0.08 part, 0.1 part, 0.12 part, 0.15 part, 0.18 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part or 0.6 part by mass.
According to the invention, the aqueous polyurethane curing agent is 1 part, 1.2 parts, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts or 6 parts by mass.
According to the invention, the preparation method of the graphene oxide anchored with metal ions comprises the following steps:
(S1) reacting graphite, sodium nitrate, metal salt, concentrated sulfuric acid and potassium permanganate to obtain a mixture;
and (S2) mixing the mixture in the step (S1) with distilled water, and then adding hydrogen peroxide aqueous solution for reaction to prepare the graphene oxide anchored with metal ions.
According to the invention, the mass-volume ratio of graphite, sodium nitrate, metal salt and sulfuric acid is 1g to 0.5-1.5g to 1-5g to 35-55mL, preferably 1g to 0.8-1.2g to 2-4g to 40-50mL.
According to the present invention, the metal salt may be at least one of soluble metal salts such as copper sulfate pentahydrate, copper sulfate pentahydrate, copper nitrate, copper chloride, copper carbonate, ferrous chloride, ferric chloride, silver nitrate, and the like.
According to the invention, in step (S1), the temperature at which potassium permanganate is added is-10-0 ℃.
According to the invention, in step (S1), the temperature of the reaction is 30-60℃e.g.50℃.
According to the invention, in step (S2), distilled water is added at a temperature of not higher than 75 ℃.
According to the invention, in step (S2), the concentration of hydrogen peroxide in the aqueous hydrogen peroxide solution is, for example, 30%, and the volume ratio of water to hydrogen peroxide is 2-4:1, and is exemplified by 2:1.
According to the invention, step (S2) further comprises a post-processing step: the prepared product is washed by deionized water.
The invention also provides a preparation method of the high-heat-conductivity water-based polyurethane material, which comprises the following steps:
and mixing graphene oxide anchored with metal ions, waterborne polyurethane, a reducing agent and an auxiliary agent for reaction to prepare the high-heat-conductivity waterborne polyurethane material.
According to the invention, an aqueous polyurethane curing agent is also added to the method.
According to the invention, the high-heat-conductivity aqueous polyurethane material is an aqueous material.
According to the invention, the viscosity of the highly thermally conductive aqueous polyurethane material is 5000-200000 mPas, for example 5000 mPas, 10000 mPas, 30000 mPas, 50000 mPas, 70000 mPas, 80000 mPas, 100000 mPas, 120000 mPas, 150000 mPas, 180000 mPas or 200000 mPas.
According to the present invention, the aqueous polyurethane is a general aqueous polyurethane commercially available in the art.
According to the invention, the process is carried out under stirring conditions at a rotational speed of 500-1000r/min, for example 600-900r/min, exemplary 600r/min, 800r/min, 850r/min, 900r/min. Stirring time is 0.5-5h.
The invention also provides application of the high-heat-conductivity water-based polyurethane material in the clothing field, and the high-heat-conductivity water-based polyurethane material is preferably used for preparing high-heat-flux heat-conductivity breathable isothermal cloth.
The invention also provides a high-heat-flux heat-conducting breathable isothermal cloth, which comprises a cloth substrate and a high-heat-conducting aqueous polyurethane material coating.
According to the invention, the high-heat-conductivity aqueous polyurethane material coating is prepared from the high-heat-conductivity aqueous polyurethane material.
According to the invention, the heat conductivity of the high heat flux heat-conducting breathable isothermal fabric is 0.4-3.5W/(m.K), preferably 0.5-3W/(m.K).
According to the present invention, the cloth substrate is made of clothing materials conventional in the art.
According to the invention, the thickness of the high heat conduction aqueous polyurethane material coating is 0.05-0.5mm, preferably 0.1-0.4mm.
According to the invention, the high-heat-conductivity aqueous polyurethane material coating is provided with hollowed holes on the cloth substrate, and the high-heat-conductivity aqueous polyurethane material coating is of an interconnection structure on the cloth substrate. The shape of the hollowed-out hole can be customized according to the requirement; such as triangular, quadrilateral, pentagonal, hexagonal, fan-shaped, or other irregular patterns, etc.
In the invention, the high-heat-conductivity aqueous polyurethane material coating is of an interconnection structure with a hollowed-out hole shape, and the width of the coating edge is 5-30mm.
The invention also provides a preparation method of the high-heat-flux heat-conducting breathable isothermal cloth, which comprises the following steps:
coating the high-heat-conductivity water-based polyurethane material on cloth by adopting a brushing tool, and drying to obtain the high-heat-flux heat-conductivity breathable isothermal cloth;
the brushing tool is provided with a hollow-hole-shaped groove, or a silk screen is attached to the surface of the brushing tool, and the shape of the silk screen is consistent with that of the high-heat-conductivity aqueous polyurethane material coating.
Preferably, after drying, the product is compacted.
According to the invention, the brushing equipment is integrated equipment capable of brushing, drying and compacting the high-heat-conductivity aqueous polyurethane material. Wherein the brushing equipment comprises a brushing tool, a compacting roller and the like; compaction rollers may be used to compact the product. The brushing equipment also comprises a conveyor belt, a dryer and other components capable of improving brushing efficiency, heat conduction performance of the pattern layer, wear resistance, flex resistance and other performances.
As an exemplary embodiment of the present invention, the preparation method of the high heat flux heat conduction breathable isothermal fabric specifically includes the following steps:
1) Preparing graphene oxide anchored with metal ions;
2) Mixing the graphene oxide anchored with metal ions in the step 1) with waterborne polyurethane, and adding a reducing agent;
3) Adding an auxiliary agent and a waterborne polyurethane curing agent into the step 2) to prepare a high-heat-conductivity waterborne polyurethane material;
4) Coating the high-heat-conductivity aqueous polyurethane material on a cloth substrate by adopting brushing equipment, and performing drying and compacting operations to obtain high-heat-flux heat-conductivity breathable isothermal cloth;
the brushing tool of the brushing equipment is provided with a hollow-hole-shaped groove; or a silk screen is attached to the surface of the brushing tool, and the shape of the silk screen is consistent with that of the high-heat-conductivity water-based polyurethane material coating.
According to the invention, the graphite has a size of 1-100 μm.
According to the present invention, the size of the graphene oxide anchored with metal ions is 1 to 100 μm.
According to the invention, the three-dimensional interconnected heat conduction network formed in the aqueous polyurethane matrix after the graphene oxide anchored with metal ions is reduced into the reduced graphene oxide anchored with metal particles has a small contact thermal resistance effect, and the heat conductivity coefficient of the high-heat-flux heat-conduction breathable isothermal cloth can be effectively improved.
The invention has the beneficial effects that:
1) The invention can greatly reduce the manpower dependence degree and liberate the productivity.
2) The high-heat-conductivity aqueous polyurethane material adopted by the invention is aqueous, nontoxic and environment-friendly, and combines sustainable development strategy guidelines.
3) The invention firstly proposes to adopt the high-heat-conductivity water-based polyurethane material, improve the heat conductivity coefficient of the high-heat-flux heat-conductivity breathable isothermal cloth, so that heat can be quickly and effectively transferred in a cloth surface, and meanwhile, the high-heat-conductivity water-based polyurethane material coating of the interconnected heat-conducting network on the surface of the cloth has a hollowed-out structure, so that the cloth has air permeability.
4) The isothermal cloth can form an in-plane interconnected heat conduction system and simultaneously maintain the air permeability of the cloth, and can be applied to the clothing field.
Drawings
FIG. 1 is a Transmission Electron Micrograph (TEM) of copper ion anchored graphene oxide prepared in example 1;
FIG. 2 is a Raman spectrum of graphene oxide anchored with copper ions in example 1;
FIG. 3 is a schematic view of the brushing apparatus of example 1;
fig. 4 is an appearance of the high heat flux heat conducting breathable isothermal cloth of example 1.
Fig. 5 is an external view of the high heat flux heat conducting breathable isothermal cloths prepared in examples 6-9, as shown in fig. 5.
Detailed Description
The technical scheme of the invention will be further described in detail below with reference to specific embodiments. It is to be understood that the following examples are illustrative only and are not to be construed as limiting the scope of the invention. All techniques implemented based on the above description of the invention are intended to be included within the scope of the invention.
Unless otherwise indicated, the starting materials and reagents used in the following examples were either commercially available or may be prepared by known methods.
Example 1
In the first step, 3g of 200 mesh graphite (available from Ala-dine), 3.1g of sodium nitrate (NaNO) 3 Purity not less than 99.0%), 10g copper sulfate pentahydrate (CuSO) 4 ·5H 2 O, purity not less than 99.0%, 145ml concentrated sulfuric acid (H) 2 SO 4 98%) was added sequentially to a 500ml three-necked flask, and the stirring speed was set at 350r/min. Stirring in ice bath for 0.5 hr, adding potassium permanganate (KMnO) 30 times within 20min 4 98%) and then raised to 50 c for 1h. After that, distilled water is added dropwise, 140mL of distilled water is added dropwise after 1h, and the temperature of the system is controlled to be lower than 75 ℃. Heating to 98deg.C after dripping, holding for 15min, and pouring 600ml of stirred hydrogen peroxide (H) 2 O 2 30%) in an aqueous solution (water and hydrogen peroxide in a ratio of 2:1). And continuing stirring until no bubbles are generated, and washing with deionized water to neutrality successively to obtain the graphene oxide aqueous solution anchored with copper ions.
Secondly, adding an aqueous solution containing copper ion-anchored graphene oxide into aqueous polyurethane (Hua Fenghua brocade, HP-106) (the mass fraction of the copper ion-anchored graphene oxide is 0.1% of that of the aqueous polyurethane), adding 1% by mass of a leveling agent water-soluble silicone oil (Hangzhou Zhuo Li chemical Co., ltd.) into the aqueous polyurethane, 0.2% by mass of an antifoaming agent polyoxyethylene polyoxypropylene alcohol ether (Hubei Chemie Co., ltd.), 0.3% by mass of a thixotropic agent fumed silica (Shanghai Shanbao Co., ltd., 99.9%,8000 mesh), 3% by mass of an aqueous polyurethane curing agent (Hua Fenghua brocade, HP-106), and 1% by mass of copper ion-anchored graphene oxide ascorbic acid (purchased from Allatin). And (3) treating for 1h at a speed of 800r/min by using a dispersing machine (Shandong HongYao chemical machinery Co., ltd., laboratory small-sized dispersing machine) to obtain the high-heat-conductivity aqueous polyurethane material.
The viscosity of the high-heat-conductivity aqueous polyurethane material is 80000 mPas.
And thirdly, adding the high-heat-conductivity aqueous polyurethane material into a storage tank by using a brushing tool (or a brushing roller) with grooves with honeycomb hexagonal structures as shown in the brushing equipment in fig. 3, brushing, drying (the temperature is 60 ℃), and compacting by using a compacting roller. The high-heat-flux heat-conducting breathable isothermal cloth with the coating thickness of 0.3mm and printed with the pattern of the honeycomb hexagonal structure is obtained.
Fig. 1 is a Transmission Electron Micrograph (TEM) of copper ion anchored graphene oxide prepared in example 1.
Fig. 2 is a raman spectrum of graphene oxide with copper ions anchored thereto in example 1.
Fig. 4 is an appearance of the high heat flux heat conducting breathable isothermal cloth prepared in example 1.
Flexural resistance test
The high heat flux heat conduction and ventilation isothermal cloth prepared in example 1 was tested by cutting 6 rectangular test pieces of 70 (+ -1) mm and 45 (+ -1) mm according to standard GB/T3903.41, and avoiding the use of a scratched part. Meanwhile, the temperature of a laboratory is controlled to be 23+/-2 ℃ and the relative humidity is controlled to be 65+/-5%. The test was performed using a leather flex tester model DZ-327 from Dai instruments, inc. The high heat flux heat conduction and ventilation isothermal fabric prepared in example 1 was measured to have 15 ten thousand times of flex resistance.
Wear resistance test
The same conditions as those of the flex test were used, and an abrasion tester model DZ-204 manufactured by Dai-Zhongjiku Co., ltd was used for the experiment. The test is carried out by adopting two modes of wet grinding and dry grinding, and the dry grinding abrasion resistance times of the high-heat-flux heat-conducting breathable isothermal cloth prepared in the embodiment 1 are 52 times and 70 times (the additive adopted in the wet grinding is water).
Thermal conductivity testing
Ten test bars with the length and the width of 30 (+ -1) mm and 20 (+ -1) mm are cut out from the high-heat-flux heat-conducting and air-permeable isothermal cloth (two test bars are needed for each heat conductivity coefficient test and are respectively placed on the upper side and the lower side of the test bars). The sample was tested for thermal conductivity at room temperature using a thermal conductivity meter (TC 3000E, available from xian xiaxi electronics limited) (ensuring that the brush coating completely covered the heater wire or that the heater wire did not contact the hollowed out portion of the cloth). The heat conductivity coefficient of the obtained high-heat-flux heat-conducting breathable isothermal cloth is 0.58W/(m.K).
Example 2
In the first step, 3g of 200 mesh graphite (available from Ala-dine), 3.1g of sodium nitrate (NaNO) 3 Purity not less than 99.0%), 10g copper sulfate pentahydrate (CuSO) 4 ·5H 2 O, purity not less than 99.0%, 145ml concentrated sulfuric acid (H) 2 SO 4 98%) was added sequentially to a 500ml three-necked flask, and the stirring speed was set at 350r/min. Stirring in ice bath for 0.5 hr, adding potassium permanganate (KMnO) 30 times within 20min 4 98%) and then raised to 50 c for 1h. After that, distilled water is added dropwise, 140mL of distilled water is added dropwise after 1h, and the temperature of the system is controlled to be lower than 75 ℃. Heating to 98deg.C after dripping, holding for 15min, and pouring 600ml of stirred hydrogen peroxide (H) 2 O 2 30%) in an aqueous solution (water and hydrogen peroxide in a ratio of 2:1). And continuing stirring until no bubbles are generated, and washing with deionized water to neutrality successively to obtain the graphene oxide aqueous solution anchored with copper ions.
Secondly, adding an aqueous solution containing copper ion anchored graphene oxide into aqueous polyurethane (Hua Fenghua brocade, HP-106) (the mass fraction of the cupric ion anchored graphene oxide is 0.2% of that of the aqueous polyurethane), adding 1% by mass of aqueous polyurethane leveling agent water-soluble silicone oil (Hangzhou Zhuo Li chemical Co., ltd.), 0.2% by mass of aqueous polyurethane defoaming agent polyoxyethylene polyoxypropylene alcohol amine ether (Hubei Chemie Co., ltd.), 0.3% by mass of aqueous polyurethane thixotropic agent fumed silica (Shanghai Shanbao Co., ltd., 99.9%,8000 meshes), 3% by mass of aqueous polyurethane curing agent (Hua Fenghua brocade, HP-106), and 1% by mass of copper ion anchored graphene oxide ascorbic acid (purchased from Allatin). And (3) treating for 1h at a speed of 800r/min by using a dispersing machine (Shandong HongYao chemical machinery Co., ltd., laboratory small-sized dispersing machine) to obtain the high-heat-conductivity aqueous polyurethane material.
The viscosity of the high-heat-conductivity aqueous polyurethane material is 80000 mPas.
And thirdly, adding the high-heat-conductivity aqueous polyurethane material into a storage tank with honeycomb hexagonal structure patterns, brushing by adopting a brushing tool with grooves with honeycomb hexagonal structure, drying (the temperature is 60 ℃), and compacting by adopting a compacting roller. The high-heat-flux heat-conducting breathable isothermal cloth with the coating thickness of 0.3mm and printed with the pattern of the honeycomb hexagonal structure is obtained.
Flexural resistance test
The high heat flux heat conduction and ventilation isothermal cloth prepared in example 2 was tested by cutting 6 rectangular test pieces of 70 (+ -1) mm and 45 (+ -1) mm according to standard GB/T3903.41, and avoiding the use of a scratched part. Meanwhile, the temperature of a laboratory is controlled to be 23+/-2 ℃ and the relative humidity is controlled to be 65+/-5%. The test was performed using a leather flex tester model DZ-327 from Dai instruments, inc. The high heat flux heat conduction and ventilation isothermal fabric prepared in example 1 was measured to have a flex resistance of 14 ten thousand times.
Wear resistance test
The same conditions as those of the flex test were used, and an abrasion tester model DZ-204 manufactured by Dai-Zhongjiku Co., ltd was used for the experiment. The test is carried out by adopting two modes of wet grinding and dry grinding, and the dry grinding abrasion resistance times of the high heat flux heat conduction and ventilation isothermal cloth prepared in the embodiment 2 are 48 times and 67 times (the additive adopted in the wet grinding is water).
Thermal conductivity testing
Ten test bars with the length and the width of 30 (+ -1) mm and 20 (+ -1) mm are cut out from the high-heat-flux heat-conducting and air-permeable isothermal cloth (two test bars are needed for each heat conductivity coefficient test and are respectively placed on the upper side and the lower side of the test bars). The sample was tested for thermal conductivity at room temperature using a thermal conductivity meter (TC 3000E, available from xian xiaxi electronics limited) (ensuring that the brush coating completely covered the heater wire or that the heater wire did not contact the hollowed out portion of the cloth). The thermal conductivity coefficient of the prepared high-heat-flux heat-conducting breathable isothermal cloth is 0.88W/(m.K).
Example 3
In a first step, 3g of 200 mesh graphite is used(available from Alatidine), 3.1g sodium nitrate (NaNO) 3 Purity not less than 99.0%), 10g copper sulfate pentahydrate (CuSO) 4 ·5H 2 O, purity not less than 99.0%, 145ml concentrated sulfuric acid (H) 2 SO 4 98%) was added sequentially to a 500ml three-necked flask, and the stirring speed was set at 350r/min. Stirring in ice bath for 0.5 hr, adding potassium permanganate (KMnO) 30 times within 20min 4 98%) and then raised to 50 c for 1h. After that, distilled water is added dropwise, 140mL of distilled water is added dropwise after 1h, and the temperature of the system is controlled to be lower than 75 ℃. Heating to 98deg.C after dripping, holding for 15min, and pouring 600ml of stirred hydrogen peroxide (H) 2 O 2 30%) in an aqueous solution (water and hydrogen peroxide in a ratio of 2:1). And continuing stirring until no bubbles are generated, and washing with deionized water to neutrality successively to obtain the graphene oxide aqueous solution anchored with copper ions.
Secondly, adding an aqueous solution containing copper ion anchored graphene oxide into aqueous polyurethane (Hua Fenghua brocade, HP-106) (the mass fraction of the copper ion anchored graphene oxide is 0.3% of that of the aqueous polyurethane), adding leveling agent water-soluble silicone oil (Hangzhou Zhuo Li chemical Co., ltd.) with the mass fraction of 1% of the aqueous polyurethane, defoaming agent polyoxyethylene polyoxypropylene alcohol amine ether (Hubei Chemie Co., ltd.) with the mass fraction of 0.2% of the aqueous polyurethane, thixotropic agent fumed silica (Shanghai Shanbao Co., ltd., 99.9%,8000 meshes) with the mass fraction of 0.3% of the aqueous polyurethane, aqueous polyurethane curing agent (Hua Fenghua brocade, HP-106) with the mass fraction of 1% of the copper ion anchored graphene oxide, and ascorbic acid (purchased from Alacin). And (3) treating for 1h at a speed of 800r/min by using a dispersing machine (Shandong HongYao chemical machinery Co., ltd., laboratory small-sized dispersing machine) to obtain the high-heat-conductivity aqueous polyurethane material.
The viscosity of the high-heat-conductivity aqueous polyurethane material is 80000 mPas.
And thirdly, adding the high-heat-conductivity aqueous polyurethane material into a storage tank, brushing by adopting a brushing tool with grooves with honeycomb hexagonal structures, drying (the temperature is 60 ℃), and compacting by adopting a compacting roller. The high-heat-flux heat-conducting breathable isothermal cloth with the coating thickness of 0.3mm and printed with the pattern of the honeycomb hexagonal structure is obtained.
Flexural resistance test
The high heat flux heat conduction and ventilation isothermal cloth prepared in example 3 was tested by cutting 6 rectangular test pieces of 70 (+ -1) mm and 45 (+ -1) mm according to standard GB/T3903.41, and avoiding the use of a scratched part. Meanwhile, the temperature of a laboratory is controlled to be 23+/-2 ℃ and the relative humidity is controlled to be 65+/-5%. The test was performed using a leather flex tester model DZ-327 from Dai instruments, inc. The high heat flux heat conduction and ventilation isothermal fabric prepared in example 1 was measured to have a flex resistance of 11 ten thousand times.
Wear resistance test
The same conditions as those of the flex test were used, and an abrasion tester model DZ-204 manufactured by Dai-Zhongjiku Co., ltd was used for the experiment. The test is carried out by adopting two modes of wet grinding and dry grinding, and the dry grinding abrasion resistance times of the high-heat-flux heat-conducting breathable isothermal cloth prepared in the embodiment 3 are 43 times and 51 times (the additive adopted in the wet grinding is water).
Thermal conductivity testing
Ten test bars with the length and the width of 30 (+ -1) mm and 20 (+ -1) mm are cut out from the high-heat-flux heat-conducting and air-permeable isothermal cloth (two test bars are needed for each heat conductivity coefficient test and are respectively placed on the upper side and the lower side of the test bars). The sample was tested for thermal conductivity at room temperature using a thermal conductivity meter (TC 3000E, available from xian xiaxi electronics limited) (ensuring that the brush coating completely covered the heater wire or that the heater wire did not contact the hollowed out portion of the cloth). The heat conductivity coefficient of the obtained high-heat-flux heat-conducting breathable isothermal cloth is 1.32W/(m.K).
Example 4
In the first step, 3g of 200 mesh graphite (available from Ala-dine), 3.1g of sodium nitrate (NaNO) 3 Purity not less than 99.0%), 10g copper sulfate pentahydrate (CuSO) 4 ·5H 2 O, purity not less than 99.0%, 145ml concentrated sulfuric acid (H) 2 SO 4 98%) was added sequentially to a 500ml three-necked flask, and the stirring speed was set at 350r/min. Stirring in ice bath for 0.5 hr, adding potassium permanganate (KMnO) 30 times within 20min 4 98%) and then raised to 50 c for 1h. After that, distilled water is added dropwise, 140mL of distilled water is added dropwise after 1h, and the temperature of the system is controlled to be lower than 75 ℃. Heating to 98deg.C after dripping, holding for 15min, and pouring 600ml of stirred hydrogen peroxide (H) 2 O 2 30%) in an aqueous solution (water and hydrogen peroxide in a ratio of 2:1). And continuing stirring until no bubbles are generated, and washing with deionized water to neutrality successively to obtain the graphene oxide aqueous solution anchored with copper ions.
Secondly, adding an aqueous solution containing copper ion anchored graphene oxide into aqueous polyurethane (Hua Fenghua brocade, HP-106) (the mass fraction of the copper ion anchored graphene oxide is 0.5% of that of the aqueous polyurethane), adding leveling agent water-soluble silicone oil (Hangzhou Zhuo Li chemical Co., ltd.) with the mass fraction of 1% of the aqueous polyurethane, defoaming agent polyoxyethylene polyoxypropylene alcohol amine ether (Hubei Chemie Co., ltd.) with the mass fraction of 0.2% of the aqueous polyurethane, thixotropic agent fumed silica (Shanghai Shanbao Co., ltd., 99.9%,8000 meshes) with the mass fraction of 0.3% of the aqueous polyurethane, aqueous polyurethane curing agent (Hua Fenghua brocade, HP-106) with the mass fraction of 1% of the copper ion anchored graphene oxide, and ascorbic acid (purchased from Alacin). And (3) treating for 1h at a speed of 800r/min by using a dispersing machine (Shandong HongYao chemical machinery Co., ltd., laboratory small-sized dispersing machine) to obtain the high-heat-conductivity aqueous polyurethane material.
The viscosity of the high-heat-conductivity aqueous polyurethane material is 80000 mPas.
And thirdly, adding the high-heat-conductivity aqueous polyurethane material into a storage tank with honeycomb hexagonal structure patterns, brushing by adopting a brushing tool with grooves with honeycomb hexagonal structure, drying (the temperature is 60 ℃), and compacting by adopting a compacting roller. The high-heat-flux heat-conducting breathable isothermal cloth with the coating thickness of 0.3mm and printed with the pattern of the honeycomb hexagonal structure is obtained.
Flexural resistance test
The high heat flux heat conduction and ventilation isothermal cloth prepared in example 4 was tested by cutting 6 rectangular test pieces of 70 (+ -1) mm×45 (+ -1) mm according to standard GB/T3903.41, and avoiding the use of a scratched part. Meanwhile, the temperature of a laboratory is controlled to be 23+/-2 ℃ and the relative humidity is controlled to be 65+/-5%. The test was performed using a leather flex tester model DZ-327 from Dai instruments, inc. The high heat flux heat conduction and ventilation isothermal fabric prepared in example 1 was measured to have a flex resistance of 8 ten thousand times.
Wear resistance test
The same conditions as those of the flex test were used, and an abrasion tester model DZ-204 manufactured by Dai-Zhongjiku Co., ltd was used for the experiment. The test is carried out by adopting two modes of wet grinding and dry grinding, and the dry grinding wear-resistant times of the high-heat-flux heat-conducting breathable isothermal cloth prepared in the embodiment 4 are 40 times and 45 times (the additive adopted in the wet grinding is water).
Thermal conductivity testing
Ten test bars with the length and the width of 30 (+ -1) mm and 20 (+ -1) mm are cut out from the high-heat-flux heat-conducting and air-permeable isothermal cloth (two test bars are needed for each heat conductivity coefficient test and are respectively placed on the upper side and the lower side of the test bars). The sample was tested for thermal conductivity at room temperature using a thermal conductivity meter (TC 3000E, available from xian xiaxi electronics limited) (ensuring that the brush coating completely covered the heater wire or that the heater wire did not contact the hollowed out portion of the cloth). The heat conductivity coefficient of the obtained high-heat-flux heat-conducting breathable isothermal cloth is 1.93W/(m.K).
Example 5
In the first step, 3g of 200 mesh graphite (available from Ala-dine), 3.1g of sodium nitrate (NaNO) 3 Purity not less than 99.0%), 30g copper sulfate pentahydrate (CuSO) 4 ·5H 2 O, purity not less than 99.0%, 145ml concentrated sulfuric acid (H) 2 SO 4 98%) was added sequentially to a 500ml three-necked flask, and the stirring speed was set at 350r/min. Stirring in ice bath for 0.5 hr, adding potassium permanganate (KMnO) 30 times within 20min 4 98%) and then raised to 50 c for 1h. After that, distilled water is added dropwise, 140mL of distilled water is added dropwise after 1h, and the temperature of the system is controlled to be lower than 75 ℃. Heating to 98deg.C after dripping, holding for 15min, and pouring 600ml of stirred hydrogen peroxide (H) 2 O 2 30%) in an aqueous solution (water and hydrogen peroxide in a ratio of 2:1). Continuing to stir until noAnd generating bubbles, and washing the bubbles with deionized water to be neutral to obtain the graphene oxide aqueous solution anchored with copper ions.
Secondly, adding an aqueous solution containing copper ion anchored graphene oxide into aqueous polyurethane (Hua Fenghua brocade, HP-106) (the mass fraction of the copper ion anchored graphene oxide is 0.5% of that of the aqueous polyurethane), adding leveling agent water-soluble silicone oil (Hangzhou Zhuo Li chemical Co., ltd.) with the mass fraction of 1% of the aqueous polyurethane, defoaming agent polyoxyethylene polyoxypropylene alcohol amine ether (Hubei Chemie Co., ltd.) with the mass fraction of 0.2% of the aqueous polyurethane, thixotropic agent fumed silica (Shanghai Shanbao Co., ltd., 99.9%,8000 meshes) with the mass fraction of 0.3% of the aqueous polyurethane, aqueous polyurethane curing agent (Hua Fenghua brocade, HP-106) with the mass fraction of 1% of the copper ion anchored graphene oxide, and ascorbic acid (purchased from Alacin). And (3) treating for 1h at a speed of 800r/min by using a dispersing machine (Shandong HongYao chemical machinery Co., ltd., laboratory small-sized dispersing machine) to obtain the high-heat-conductivity aqueous polyurethane material.
The viscosity of the high-heat-conductivity aqueous polyurethane material is 80000 mPas.
And thirdly, adding the high-heat-conductivity aqueous polyurethane material into a storage tank with honeycomb hexagonal structure patterns, brushing by adopting a brushing tool with grooves with honeycomb hexagonal structure, drying (the temperature is 60 ℃), and compacting by adopting a compacting roller. The high-heat-flux heat-conducting breathable isothermal cloth with the coating thickness of 0.3mm and printed with patterns with honeycomb hexagonal structures is obtained.
Flexural resistance test
The high heat flux heat conduction and ventilation isothermal cloth printed with the pattern of the honeycomb hexagonal structure prepared in the example 5 is cut into 6 rectangular test pieces with the size of 70 (+ -1) mm and 45 (+ -1) mm according to the standard GB/T3903.41, and the test is carried out without taking the position with the flaw. Meanwhile, the temperature of a laboratory is controlled to be 23+/-2 ℃ and the relative humidity is controlled to be 65+/-5%. The test was performed using a leather flex tester model DZ-327 from Dai instruments, inc. The measured number of times of deflection of the high heat flux heat-conducting breathable isothermal cloth is 8 ten thousand times.
Wear resistance test
The same conditions as those of the flex test were used, and an abrasion tester model DZ-204 manufactured by Dai-Zhongjiku Co., ltd was used for the experiment. The test is carried out by adopting two modes of wet grinding and dry grinding, and the dry grinding abrasion resistance times of the high-heat-flux heat-conducting breathable isothermal cloth prepared in the embodiment 4 are 39 times and 43 times (the additive adopted in the wet grinding is water).
Thermal conductivity testing
Ten test bars with the length and width of 30 (+ -1) mm and 20 (+ -1) mm are cut out from the high-heat-flux heat-conducting breathable isothermal cloth printed with the patterns in the honeycomb hexagonal structure patterns (two test bars are needed for each heat conductivity test and are respectively placed on the upper side and the lower side of the test bars). The sample was tested for thermal conductivity at room temperature using a thermal conductivity meter (TC 3000E, available from xian xiaxi electronics limited) (ensuring that the brush coating completely covered the heater wire or that the heater wire did not contact the hollowed out portion of the cloth). The heat conductivity coefficient of the obtained high-heat-flux heat-conducting breathable isothermal cloth is 2.3W/(m.K).
Example 6
Example 6 differs from example 1 in that: and in the third step, a brushing tool with square structural grooves is adopted for brushing, and the high-heat-flux heat-conducting breathable isothermal cloth with the brushing thickness of 0.3mm and printed with square structural patterns is obtained.
Example 7
Example 7 differs from example 1 in that: and in the third step, a brushing tool with grooves with diamond structures is adopted for brushing, and the high-heat-flux heat-conducting breathable isothermal cloth with the brushing thickness of 0.3mm and printed with patterns with diamond structures is obtained.
Example 8
Example 8 differs from example 1 in that: and in the third step, a brushing tool with a triangular groove is adopted for brushing, and the high-heat-flux heat-conducting breathable isothermal cloth with the brushing thickness of 0.3mm and printed with the triangular pattern is obtained.
Example 9
Example 9 differs from example 1 in that: and in the third step, a brushing tool with pentagonal structure grooves is adopted for brushing, and the high-heat-flux heat-conducting breathable isothermal cloth with the brushing thickness of 0.3mm and printed with patterns with honeycomb pentagonal structure is obtained.
The appearance of the high heat flux heat conducting breathable isothermal cloths prepared in examples 6-9 is shown in figure 5.
The embodiments of the present invention have been described above by way of example. However, the scope of the present invention is not limited to the above embodiments. Any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art, which fall within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (6)
1. The application of the high-heat-conductivity water-based polyurethane material in the clothing field is characterized by being used for preparing high-heat-flux heat-conductivity breathable isothermal cloth;
the raw material composition of the high-heat-conductivity aqueous polyurethane material comprises the following components in parts by mass:
aqueous polyurethane: 100 parts;
graphene oxide anchored with metal ions: 0.05-1.5 parts;
leveling agent: 0.5-4 parts;
defoaming agent: 0.05-0.5 part;
thixotropic agent: 0.05-0.6 part;
aqueous polyurethane curing agent: 1-6 parts;
a reducing agent;
the mass of the reducing agent is 0.5-1.2% of that of the graphene oxide anchored with the metal ions;
the viscosity of the high-heat-conductivity aqueous polyurethane material is 5000-200000 mPa.s;
the preparation method of the graphene oxide anchored with metal ions comprises the following steps:
(S1) reacting graphite, sodium nitrate, metal salt, concentrated sulfuric acid and potassium permanganate to obtain a mixture;
(S2) mixing the mixture in the step (S1) with distilled water, and then adding hydrogen peroxide aqueous solution for reaction to prepare graphene oxide anchored with metal ions;
the mass volume ratio of the graphite to the sodium nitrate to the metal salt to the concentrated sulfuric acid is 1g:0.5-1.5g:1-5g:35-55 mL;
the metal salt is at least one of copper sulfate, copper nitrate, copper chloride, copper carbonate, ferrous chloride, ferric chloride and silver nitrate.
2. A method for preparing an aqueous polyurethane material for use according to claim 1, characterized in that it comprises:
and mixing graphene oxide anchored with metal ions, waterborne polyurethane, a reducing agent, a leveling agent, a defoaming agent, a thixotropic agent and a waterborne polyurethane curing agent for reaction to prepare the high-heat-conductivity waterborne polyurethane material.
3. The high-heat-flux heat-conducting breathable isothermal cloth is characterized by comprising a cloth substrate and a high-heat-conducting aqueous polyurethane material coating;
the high-heat-conductivity aqueous polyurethane material coating is prepared from the aqueous polyurethane material as claimed in claim 1.
4. An isothermal cloth according to claim 3, wherein the high heat flux, thermally conductive, breathable isothermal cloth has a thermal conductivity of 0.4-3.5W/(m-K).
5. An isothermal cloth according to claim 3, wherein the high thermal conductivity aqueous polyurethane material coating has a thickness of 0.05-0.5mm;
the high-heat-conductivity aqueous polyurethane material coating is provided with hollowed holes on the cloth substrate, and is of an interconnection structure on the cloth substrate.
6. The method for preparing the high-heat-flux heat-conducting breathable isothermal fabric according to claim 4 or 5, characterized in that the method comprises the following steps:
coating the high-heat-conductivity water-based polyurethane material on cloth by adopting a brushing tool, and drying to obtain the high-heat-flux heat-conductivity breathable isothermal cloth;
the brushing tool is provided with a hollow-hole-shaped groove, or a silk screen is attached to the surface of the brushing tool, and the shape of the silk screen is kept consistent with that of the high-heat-conductivity aqueous polyurethane material coating.
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