CN115304953B - Radiant heat photon control material and preparation method thereof - Google Patents
Radiant heat photon control material and preparation method thereof Download PDFInfo
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- CN115304953B CN115304953B CN202110508761.8A CN202110508761A CN115304953B CN 115304953 B CN115304953 B CN 115304953B CN 202110508761 A CN202110508761 A CN 202110508761A CN 115304953 B CN115304953 B CN 115304953B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The invention provides a radiant heat photon control material and a preparation method thereof; the material comprises a polymer porous matrix and micro-nano inorganic particles. The material has an average reflectivity of 96.7% in the visible near infrared band and an average emissivity of 93.8% in the middle infrared atmospheric window band (8-13 μm), and can realize radiation cooling at 8 ℃ in the daytime. Meanwhile, the material is prepared by a 3D printing technology, a porous polymer structure embedded with micro-nano inorganic particles is formed in one step based on a non-solvent induced phase separation principle, the high-precision customization requirement of a complex three-dimensional structure can be met, and the material has a wide application prospect in the fields of cold chain transportation, buildings and personal electronic equipment thermal management.
Description
Technical Field
The invention relates to the technical field of functional composite materials, in particular to a radiant heat photon control material and a preparation method thereof.
Background
With the development of civilians and the ever-increasing expectations of good life, the demands for space and food refrigeration in summer are also increasing. Traditional cooling techniques based on vapor compression and fluid cooling are required to be at the expense of large-scale fossil energy consumption and cause serious hydrocarbon, carbon dioxide and black carbon emissions, and are a push for global climate warming and urban heat island exacerbation. At present, 36 hundred million refrigeration equipment are estimated to be in use worldwide, and the power consumption of the refrigeration equipment accounts for 10-15% of the worldwide power consumption. Research shows that CO generated by space refrigeration in 1990-2018 2 The discharge amount is increased by more than two times and reaches 11.3 hundred million tons. According to the comprehensive report of refrigeration system emission and policy issued by the United nations environmental planning agency and the International energy agency together, the global climate friendly refrigeration transformation can avoid the emission of up to 4600 hundred million tons of greenhouse gases in the next 40 years and ensure the global temperature rise to be controlled within 1.5 ℃ at the end of the century. The development of new cooling systems and the development of new cooling materials is therefore a significant challenge in reducing carbon emissions, reducing climate deterioration and energy consumption.
Radiant thermal control is an emerging effective passive cooling means that does not require external energy input. Radiation heat exchange is one of the main forms of heat exchange, energy radiated by objects at normal temperature is mainly concentrated in a mid-infrared band, and infrared transparency of the atmosphere in the 8-13 μm band is high, so that heat radiated by objects on the ground can be almost transmitted into the space without loss through the atmospheric transparent window. Considering the temperature difference between the ground surface temperature and the background temperature of the universe environment, which is approximately 300 ℃, the universe environment can be regarded as an efficient and stable 'refrigeratory' for cooling ground surface objects. In order to fully realize the passive cooling, the radiation heat control material reduces the sunlight absorption capacity to the greatest extent and improves the mid-infrared band emissivity, so that the radiation heat control material can realize the self temperature lower than the ambient air temperature. Compared with the current mainstream refrigerating systems and refrigerating materials, the radiation heat control material does not need energy consumption and has almost zero carbon emission, and is a passive cooling mode which is environment-friendly and has great development potential. Literature related to radiant heat control materials has been reported, for example, in chinese patent CN112342792 a, entitled: the technical characteristics of the patent are to provide a construction method of a fabric surface with passive daytime radiation heat control function and special wettability function, and the adoption of an impregnation method to combine potassium titanate whisker and polydimethylsiloxane with the micro-nano structure of the fabric surface can realize higher middle infrared emissivity and good super-hydrophobic performance. However, the reflectivity of the material prepared by the technology in the visible wave band is low, and the radiation heat control effect needs to be further improved. And as another Chinese patent CN 112460836A, the name is "passive radiation cooling composite film", the technical characteristics of the patent are that a radiation thermal control configuration of metal combined patterning polydimethylsiloxane is provided, the material comprises an infrared light emitting layer of which the planar metal reflecting layer is made of polydimethylsiloxane and which is sequentially arranged from bottom to top, and a one-dimensional or two-dimensional optical microstructure unit is arranged on the upper surface of the infrared light emitting layer, so that the visible near infrared high reflectivity and the mid infrared high emissivity can be simultaneously realized. However, the preparation cost of the technology is high, and the manufacturability of the large-area preparation needs to be further improved. The technology is characterized in that a thermal drawing method is used for preparing polymer fibers mixed with inorganic micro-nano particles, and the cross section shape and the macroscopic structure of the fibers can be designed to realize good radiant heat control performance and mechanical performance. However, the technology has high energy consumption in the preparation process, and the applicability to irregular surfaces needs to be improved. The radiation heat control materials studied at present are almost all in service in the form of films or coatings and are attached to the existing substrates. In cold chain transportation and building applications, bulk radiant heat control materials with complex shapes are more practical, but related research and manufacturing processes have been reported.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a radiation heat control photon material and a preparation method thereof, wherein the radiation heat control photon material has high reflectivity in a sunlight wave band to reduce energy absorption, and has high emissivity in a middle infrared wave band to enhance radiation heat exchange efficiency so as to realize a passive cooling effect; meanwhile, the radiation heat control photon material is prepared by adopting a 3D printing technology, can realize the programmed construction of complex three-dimensional shapes, and can realize personalized customization according to different application occasions and requirements.
The aim of the invention is realized by the following technical scheme:
in a first aspect, the invention relates to a radiant heat photon control material, which is formed by embedding micro-nano inorganic particles in a porous polymer matrix, wherein the micro-nano inorganic particles are one or more selected from aluminum oxide, silicon oxide, magnesium oxide, zinc oxide, boron nitride, yttrium oxide and titanium oxide, the diameter of the polymer is 50 nm-20 mu m, the polymer is one of polyurethane, polyvinylidene fluoride, polystyrene, polymethyl methacrylate, polylactic acid, acrylonitrile-butadiene-styrene and polycaprolactone, and the average pore diameter of the multiple pores is 0.5-5 mu m.
The material selected by the invention has extremely low extinction coefficient in the sunlight wave band (0.3-2.5 mu m) so as to ensure the minimum sunlight absorption. The polymer porous matrix has strong light scattering efficiency and a lower photon average transmission path, and can realize very high visible near infrared reflectivity. Meanwhile, the selected polymer has multiple absorption peaks in mid-infrared (2.5-20 mu m) due to rich functional group resonance modes, so that higher mid-infrared emissivity can be realized. The addition of micro-nano inorganic particles can further utilize phonon polarization resonance modes of the micro-nano inorganic particles to improve the infrared emissivity of the whole structure and keep the high reflectivity of visible near infrared bands. The polymer selected can also provide good mechanical properties to achieve self-support of the entire photonic structure.
In a second aspect, the present invention further relates to a method for preparing the aforementioned radiation thermal control photon material by 3D printing, where the method for preparing the 3D printing includes the following steps:
s1, mixing a polymer, a pore-forming agent and micro-nano inorganic particles in a polymer solvent to prepare a precursor solution which is used as printing ink;
s2, preparing a mixed solution of a polymer solvent and a non-solvent, and using the mixed solution as a coagulation bath;
s3, placing the printing ink in 3D printing equipment, extruding the ink by utilizing air pressure, sinking a pinhead below the liquid level of the coagulating bath, controlling programmed movement of the pinhead by utilizing a G-code, extruding printing fibers and piling the fibers into a three-dimensional printing structure;
s4, placing the three-dimensional printing structure in the coagulating bath for 0.5-2 h, and then drying at normal temperature to obtain the radiation heat control photon material.
As an embodiment of the present invention, in step S1, the mass fraction of the polymer is 10% -40%, and the polymer solvent is one of N, N-dimethylformamide, acetone, dichloromethane, chloroform, acetyl dimethylamine and dimethyl sulfoxide. The polymer concentration within the above range is advantageous for maintaining a good viscosity of the solution and avoiding collapse during 3D printing.
In step S1, the mass fraction of the pore-forming agent is 1% -10%, the pore-forming agent is one or more of polyvinylpyrrolidone, polyethylene glycol, polyvinyl alcohol, lithium chloride, sodium sulfate and methylcellulose, and the pore-forming agent is used for adjusting the pore size distribution and the porosity of the matrix so that the porous matrix has optimal visible near infrared reflectivity.
In step S1, the mass fraction of the micro-nano inorganic particles is 2% -30%, which is in the above range, so as to further enhance the emissivity of the radiant heat control photon material, and ensure that the overall structure has a certain mechanical strength.
In step S2, the non-solvent is one or more of deionized water, ethanol, methanol and propanol, and the volume percentage of the polymer solvent in the coagulation bath is 0-70%, so that the polymer solvent is beneficial to improving the surface morphology of the printing fiber within the above proportion range, and the pore size distribution in the three-dimensional printing structure is more uniform.
As one embodiment of the present invention, in step S3, the tip diameter of the printing nozzle of the 3D printing apparatus is 100 μm to 600 μm, the printing air pressure is 0.05 to 0.6MPa, and the needle running rate is 4 to 10mm/S.
As an embodiment of the present invention, in step S3, the G-code is written according to the modeled type.
The preparation process principle of the invention is that in the printing process, the exchange of the polymer solvent and the non-solvent occurs in the printing fiber, so that the polymer is induced to undergo a non-solvent induced phase separation process, and then a porous matrix is formed and solidified. The exchange rate of the polymer solvent and the non-solvent can be further promoted by adjusting the mass and the molecular weight of the pore-forming agent, and the final pore morphology is improved.
Compared with the prior art, the invention has the following beneficial effects:
1. the radiant heat control photon material has strong visible near infrared reflectivity and strong middle infrared emissivity, the average reflectivity of a 350 mu m thick single-layer 3D printing structure to sunlight can reach 96.7 percent at the highest, the average emissivity of a middle infrared atmospheric window (within 8-13 mu m) can reach 93.8 percent at the highest, and the radiant heat control photon material can reach 1000W/m 2 Realize the cooling of 8 ℃ at most under the sunlight illumination;
2. the radiation heat control photon material breaks through a single two-dimensional service form of the existing radiation heat control material, and realizes three-dimensional radiation heat control material construction of different customized shapes under room temperature conditions for the first time, so that the radiation heat control photon material has wide application prospect in the fields of cold chain transportation, construction, personal electronic equipment cooling and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art. Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the composition and structure of a radiant heat control photon material;
FIG. 2 is an optical photograph of a three-dimensional printed structure of a radiation heat control photon material obtained in example 1 of the present invention;
FIG. 3 is a scanning electron micrograph of a three-dimensional printed fiber of a radiation heat control photon material obtained in example 1 of the present invention;
FIG. 4 is a partial enlarged scanning electron microscope photograph of a three-dimensional printing fiber of a radiation heat control photon material obtained in the embodiment 1 of the present invention;
FIG. 5 shows the spectral reflectance of the bolometric photonic material obtained in example 1 of the present invention in the visible near infrared band;
fig. 6 shows the spectral emissivity of the bolometric photonic material obtained in example 1 of the present invention in the atmospheric window band.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Example 1
Firstly, preparing printing ink, dissolving polyurethane with the mass fraction of 20%, polyvinyl alcohol with the mass fraction of 4% and alumina particles with the mass fraction of 5% in N, N-dimethylformamide, and magnetically stirring for 4 hours to uniformly mix the solutions. The alumina used had an average particle size of 500nm. A coagulation bath containing 50% n, n-dimethylformamide was prepared, and deionized water was selected as the non-solvent. The printing ink was loaded into a plastic cartridge fitted with a 600 μm inside diameter needle and mounted into the nozzle slot of a 3D printer, and compressed air was loaded after being held by a jig in preparation for printing. The printing air pressure was set to 0.2MPa, and the running rate of the needle was 6mm/s. And printing into a corresponding 3D structure according to the three-dimensional model under the guidance of the G-code. And after printing, standing the printed structure in a coagulating bath for 1h, and drying at normal temperature to obtain the three-dimensional radiation heat control photon material structure. The composition structure of the prepared radiant heat control photon material is shown in figure 1, and the radiant heat control photon material comprises a porous polymer matrix 1 and embedded micro-nano inorganic particles 2. The structure optical photograph obtained by printing is shown in fig. 2, and the structure obtained by 3D printing is different in shape, which shows that the radiant heat control photon material prepared by the 3D printing method has the characteristic of high-precision customization. As shown in figures 3 and 4, the scanning electron micrographs of the printing fibers show that the prepared polymer has compact micropore arrangement and uniform size, and micro-nano inorganic particles are uniformly dispersed in a porous matrix without serious agglomeration, thereby greatly helping to improve the mechanical property and the radiation heat control property.
The reflectivity of the radiant heat control photon material prepared in the embodiment in the visible near infrared is 96.7%, as shown in fig. 5, the infrared emissivity in the atmospheric window band is 93.8%, as shown in fig. 6, and the radiant heat control photon material can achieve the highest cooling of 8 ℃ in daytime.
Example 2
Firstly, preparing printing ink, dissolving 20% of polystyrene, 4% of polyvinyl alcohol and 5% of alumina particles in N, N-dimethylformamide, and magnetically stirring for 4 hours to uniformly mix the solutions. The alumina used had an average particle size of 500nm. A coagulation bath containing 50% n, n-dimethylformamide was prepared, and deionized water was selected as the non-solvent. The printing ink was loaded into a plastic cartridge fitted with a 600 μm inside diameter needle and mounted into the nozzle slot of a 3D printer, and compressed air was loaded after being held by a jig in preparation for printing. The printing air pressure was set to 0.2MPa, and the running rate of the needle was 6mm/s. And printing into a corresponding 3D structure according to the three-dimensional model under the guidance of the G-code. And after printing, standing the printed structure in a coagulating bath for 1h, and drying at normal temperature to obtain the three-dimensional radiation heat control photon material structure.
The reflectivity of the radiant heat control photon material prepared by the embodiment is 96.2% in the visible near infrared, the infrared emissivity in the atmospheric window wave band is 91%, and the highest temperature reduction of 5 ℃ can be achieved in the daytime.
Example 3
Firstly, preparing printing ink, dissolving 20% of acrylonitrile-butadiene-styrene by mass, 4% of polyvinyl alcohol by mass and 5% of alumina particles by mass in methylene dichloride, and magnetically stirring for 4 hours to uniformly mix the solutions. The alumina used had an average particle size of 500nm. A coagulation bath containing 50% methylene chloride was prepared, and ethanol was selected as the non-solvent. The printing ink was loaded into a plastic cartridge fitted with a 600 μm inside diameter needle and mounted into the nozzle slot of a 3D printer, and compressed air was loaded after being held by a jig in preparation for printing. The printing air pressure was set to 0.2MPa, and the running rate of the needle was 6mm/s. And printing into a corresponding 3D structure according to the three-dimensional model under the guidance of the G-code. And after printing, standing the printed structure in a coagulating bath for 1h, and drying at normal temperature to obtain the three-dimensional radiation heat control photon material structure.
The reflectivity of the radiant heat control photon material prepared by the embodiment is 95.8% in the visible near infrared, the infrared emissivity in the atmospheric window wave band is 90%, and the highest temperature reduction of 4.8 ℃ can be achieved in the daytime.
Example 4
Firstly, preparing printing ink, dissolving polyurethane with the mass fraction of 20%, polyvinylpyrrolidone with the mass fraction of 4% and silicon oxide particles with the mass fraction of 10% in N, N-dimethylformamide, and magnetically stirring for 4 hours to uniformly mix the solutions. The silica used had an average particle diameter of 100nm. A coagulation bath containing 50% n, n-dimethylformamide was prepared, and deionized water was selected as the non-solvent. The printing ink was loaded into a plastic cartridge fitted with a 600 μm inside diameter needle and mounted into the nozzle slot of a 3D printer, and compressed air was loaded after being held by a jig in preparation for printing. The printing air pressure was set to 0.2MPa, and the running rate of the needle was 6mm/s. And printing into a corresponding 3D structure according to the three-dimensional model under the guidance of the G-code. And after printing, standing the printed structure in a coagulating bath for 1h, and drying at normal temperature to obtain the three-dimensional radiation heat control photon material structure.
The reflectivity of the radiant heat control photon material prepared by the embodiment is 96% in the visible near infrared, the infrared emissivity in the atmospheric window band is 92%, and the highest temperature reduction of 5.5 ℃ can be achieved in the daytime.
Example 5
Firstly, preparing printing ink, dissolving polyurethane with the mass fraction of 20%, polyvinylpyrrolidone with the mass fraction of 4% and boron nitride particles with the mass fraction of 10% in N, N-dimethylformamide, and magnetically stirring for 4 hours to uniformly mix the solutions. The average particle size of the boron nitride used was 400nm. A coagulation bath containing 50% n, n-dimethylformamide was prepared, and deionized water was selected as the non-solvent. The printing ink was loaded into a plastic cartridge fitted with a 600 μm inside diameter needle and mounted into the nozzle slot of a 3D printer, and compressed air was loaded after being held by a jig in preparation for printing. The printing air pressure was set to 0.2MPa, and the running rate of the needle was 6mm/s. And printing into a corresponding 3D structure according to the three-dimensional model under the guidance of the G-code. And after printing, standing the printed structure in a coagulating bath for 1h, and drying at normal temperature to obtain the three-dimensional radiation heat control photon material structure.
The reflectivity of the radiant heat control photon material prepared by the embodiment is 92% in the visible near infrared, the infrared emissivity in the atmospheric window band is 90%, and the highest temperature reduction of 3 ℃ can be achieved in the daytime.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.
Claims (10)
1. The radiant heat photon control material is characterized by comprising a polymer porous matrix and micro-nano inorganic particles;
the polymer is any one of polyurethane, polyvinylidene fluoride, polystyrene, polymethyl methacrylate, polylactic acid and polycaprolactone, and the average pore diameter of the porous polymer ranges from 0.5 mu m to 5 mu m;
the micro-nano inorganic particles are selected from any one or more of aluminum oxide, silicon oxide, magnesium oxide, zinc oxide, boron nitride, yttrium oxide and titanium oxide, and the diameter of the micro-nano inorganic particles is 50 nm-20 mu m;
mixing a polymer, a pore-forming agent and micro-nano inorganic particles in a polymer solvent to prepare a precursor solution which is used as printing ink; preparing a mixed solution of a polymer solvent and a non-solvent, and using the mixed solution as a coagulation bath; placing the printing ink into 3D printing equipment, extruding the ink by utilizing air pressure, sinking a pinhead below the liquid level of the coagulating bath, controlling the movement of the pinhead, extruding printing fibers and piling the printing fibers into a three-dimensional printing structure; and placing the three-dimensional printing structure in the coagulating bath for 0.5-2 h, and then drying to obtain the radiation heat control photon material.
2. A method of preparing a radiant heat photon controlled material as in claim 1 comprising the steps of:
s1, mixing a polymer, a pore-forming agent and micro-nano inorganic particles in a polymer solvent to prepare a precursor solution which is used as printing ink;
s2, preparing a mixed solution of a polymer solvent and a non-solvent, and using the mixed solution as a coagulation bath;
s3, placing the printing ink in 3D printing equipment, extruding the ink by utilizing air pressure, sinking a pinhead below the liquid level of the coagulating bath, controlling the movement of the pinhead, extruding printing fibers and piling the fibers into a three-dimensional printing structure;
and S4, placing the three-dimensional printing structure in the coagulating bath for 0.5-2 h, and then drying to obtain the radiation heat control photon material.
3. The method of producing a bolometric photon material of claim 2, wherein in step S1, the mass fraction of said polymer is comprised between 10% and 40%.
4. The method of producing a bolometric photon material of claim 2, wherein in step S1, said polymer solvent is one of N, N-dimethylformamide, acetone, dichloromethane, chloroform, acetyl dimethylamine, and dimethyl sulfoxide.
5. The method of producing a bolometric photon material of claim 2, wherein in step S1, the mass fraction of the porogen is 1% -10%.
6. The method of producing a bolometric photon material of claim 2, wherein in step S1, said porogen is one or more of polyvinylpyrrolidone, polyethylene glycol, polyvinyl alcohol, lithium chloride, sodium sulfate, and methylcellulose.
7. The method of producing a bolometric photon material according to claim 2, wherein in step S1, the mass fraction of the micro-nano inorganic particles is 2% -30%.
8. The method of claim 2, wherein in step S2, the non-solvent is one or more of deionized water, ethanol, methanol, and propanol.
9. The method for preparing a bolometric photon material according to claim 2, wherein in step S2, the volume percentage of the polymer solvent in the coagulation bath is 0-70%.
10. The method for preparing a radiation heat control photon material according to claim 2, wherein in step S3, the diameter of the tip of the printing nozzle of the 3D printing device is 100 μm to 600 μm, the printing air pressure is 0.05 to 0.6mpa, and the running speed of the needle is 4 to 10mm/S.
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