Nano carbon ceramic / polyurethane coating material for solar composite material frame and preparation method of nano carbon ceramic / polyurethane coating material

Abstract

The invention discloses a nano carbon ceramic / polyurethane coating material for a solar composite material frame and a preparation method of the nano carbon ceramic / polyurethane coating material, and relates to the technical field of solar photovoltaic panel coatings. The nano carbon ceramic polyurethane coating material is mainly composed of a component A and a component B. The component A is prepared from a nano carbon ceramic material, auxiliaries and a waterborne polyurethane material, the component B contains ionized polyisocyanate, firstly, the surface of the nano carbon material is coated with nano ceramic through an acoustic mechanical resonance method to form a core-shell structure, and nano carbon ceramic powder is prepared; then, preparing a component A and a component B of the bi-component waterborne polyurethane; when the nano carbon ceramic / polyurethane coating material is used, the component A and the component B are mixed in proportion, and the nano carbon ceramic / polyurethane coating material is obtained.By means of the method, a water dispersion type polyurethane coating high in heat conductivity and excellent in weather resistance can be prepared, the heat conductivity of a solar composite frame is improved, and the service life of the solar composite frame is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of solar photovoltaic panel coatings, and in particular relates to a nano carbon ceramic / polyurethane coating material for a solar composite material frame and a preparation method thereof. Background Art

[0002] A new round of energy technology revolution is taking place. Photovoltaic power generation is an important part of the new energy industry. my country is the world's largest producer and consumer of new energy, and it is the leader in the global new energy industry. Solar photovoltaic panels are mainly composed of semiconductor panels and frames. Among them, the frame is an important part of the solar panel. It not only supports and protects the solar panel, but also affects the performance of the photovoltaic system. At present, there are three types of photovoltaic frames on the market: aluminum alloy, steel and composite materials. Aluminum alloy frames developed the earliest and have the largest market share, but their price is relatively high (100 yuan / set). Under the two major development goals of the photovoltaic industry, "cost reduction" and "efficiency increase", component manufacturers have been seeking alternative solutions, and steel structures and composite frames have gradually entered people's field of vision. The price of steel frames is relatively low, but their aesthetics, corrosion resistance, high density, poor processability, etc., limit their application; composite frames have the characteristics of light weight, high strength, low price (50 yuan / set), and easy recycling, and are expected to replace alloy frames and be accepted by the market. However, on the one hand, composite frames have poor weather resistance, resulting in a short life (need to be used for more than 25 years); on the other hand, the thermal conductivity is insufficient, and heat accumulation affects the efficiency of photovoltaic power generation. Therefore, the performance of composite material frames must be improved to achieve economic and environmental goals.

[0003] Due to the aesthetic and practical requirements of the composite frame, coating a layer of paint on its surface is expected to solve the shortcomings of the composite frame's insufficient service life and insufficient thermal conductivity.

[0004] In view of this, the present invention provides a method for preparing a nano-carbon ceramic / polyurethane coating material for a solar composite frame with excellent adhesion, high thermal conductivity and strong weather resistance to meet practical needs. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems of poor weather resistance, short service life, insufficient thermal conductivity, and heat accumulation of composite material frames that affect photovoltaic power generation efficiency.

[0006] A method for preparing a nano carbon ceramic / polyurethane coating material for a solar composite frame with excellent adhesion, high thermal conductivity and strong weather resistance is provided, and the nano carbon ceramic / polyurethane coating material is used in a solar composite material frame.

[0007] The invention has two innovative points: one is the development of a new type of filler, which uses an acoustic hybrid system and combines the friction and collision between materials to achieve physical bonding of materials and prepare a new type of core-shell structured nano-carbon ceramic filler. At the same time, this method does not require any organic solvents, is green and environmentally friendly, and meets the requirements of large-scale production. In addition, the shell ceramic material can reflect sunlight and reduce the absorption of solar energy. The use of an acoustic vibration system can evenly disperse the nano-carbon ceramic powder in the sol, which can improve the stability of the filler in the sol and effectively reduce the occurrence of sedimentation; another feature is the innovative synthesis of a new iodine ionized 4,4',4"-trithiocyanate triphenylamine crosslinker as the second component of a two-component water-based polyurethane. This component has good hydrophilicity, and the prepared polyurethane coating has high adhesion, strong corrosion resistance, high strength, and is not easy to peel off, with a service life of more than 30 years.

[0008] The invention provides a nano carbon ceramic / polyurethane coating material for a solar composite material frame, comprising a component A and a component B, characterized in that: the component A comprises, by weight, 40-70 parts of a polymer emulsion, 5-35 parts of a nano carbon ceramic powder, 0.5-5 parts of a dispersant, 2-3 parts of a wax emulsion, 0.2-0.8 parts of a pH regulator, 1-5 parts of a film-forming aid, 0.5-5 parts of a thickener, 0.1-0.5 parts of a defoamer, 1-2 parts of an anti-ultraviolet agent, 0.2-1.5 parts of a wetting and leveling agent, 0.5-1 parts of an antioxidant, 0.5-1 parts of a surfactant, and 5-20 parts of deionized water; and the component B is iodine ionized 4,4',4"-trithiocyanate triphenylamine.

[0009] The nano-carbon ceramic powder is a nano-carbon material with ceramic nanoparticles on the surface. The nano-carbon material includes zero-dimensional nano-carbon black, one-dimensional carbon fiber or carbon nanotube, two-dimensional graphene nanosheet or Mxene nanosheet, etc.; the nano-ceramic material includes one or more of nano-aluminum oxide, nano-magnesium oxide, nano-silicon dioxide, nano-aluminum nitride, and boron nitride nanosheet.

[0010] The present invention also provides a method for preparing a nano-carbon ceramic / polyurethane coating material for a solar composite material frame, wherein the two-component waterborne polyurethane comprises component A and component B;

[0011] The preparation process of component A comprises the following steps:

[0012] A: First add deionized water to the reactor, then add surfactant, dispersant, thickener, defoamer under stirring, and use an acoustic vibration system to mix for 10 minutes to disperse evenly;

[0013] B: Slowly add nano carbon ceramic powder to the pre-dispersion liquid and treat it with an acoustic resonance system for 30-120 minutes;

[0014] C: Add the polymer emulsion and the remaining additives into the reactor and treat with the acoustic resonance system for 10-30 minutes until they are uniform.

[0015] Component B is composed entirely of iodinated 4,4'4"-trithiocyanate triphenylamine, and its preparation process includes the following steps:

[0016] D: Dissolve 4,4'4"-triaminotriphenylamine in anhydrous tetrahydrofuran, gradually add thiophosgene tetrahydrofuran solution dropwise at 0°C, continue the reaction for 24 hours, then remove most of the solvent by vacuum distillation, pour into ethyl acetate to obtain a precipitate, and dry to obtain an intermediate.

[0017] E: The intermediate was dissolved in chloroform, iodomethane was added, and the reaction was carried out at 60°C for 24 hours. The solvent was removed to obtain iodinated 4,4'4"-trithiocyanate triphenylamine.

[0018] Preferably, the preparation of the nano carbon ceramic powder comprises the following steps:

[0019] F. Mix the dried nano-carbon material and the dried nano-ceramic material evenly and put them into a resonator reinforcement cavity; the acoustic reinforcement cavity includes a cylindrical inner cavity, wherein the diameter of the inner cavity is 50-100 cm, and the ratio of the inner cavity length to the diameter is 0.2-2; the mechanical resonance frequency generated by the mechanical resonator is 20 Hz-100 Hz, and the amplitude is 4 mm-15 mm.

[0020] G. Place the mixed material and the mechanical resonance cavity into a resonator, fix them, set the time and acceleration, and coat the nano-ceramic material on the surface of the nano-carbon material.

[0021] Preferably, in step A, the mass ratio of the nano-carbon material to the nano-ceramic material added is 1:1-10.

[0022] Preferably, in step G, the preparation time is 10-120 min, the acceleration is 10-200 g (1 g = 9.8 m / s2), and the intensity of the exciting force is the exciting force generated by the exciter contained in the mechanical resonator or an intensity value that is mathematically related to the exciting force and represents the magnitude of the exciting force.

[0023] When used, the mass ratio of the component A to the component B is 4-9:1, and the nano carbon ceramic / polyurethane coating material is obtained by mixing.

[0024] The present invention provides a method for preparing a nano carbon ceramic / polyurethane coating material for a solar composite material frame with excellent adhesion, high thermal conductivity and strong weather resistance, which can greatly improve the shortcomings of insufficient thermal conductivity and short service life of the composite material frame, making the existing composite material frame more competitive in the market. Similar materials have not been reported.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention selects nano-carbon materials with ultra-high thermal conductivity as thermal conductive fillers, and coats the surface of carbon fibers with nano-ceramic materials to form a special coating layer with a "core-shell" structure, thereby maximizing the thermal conductivity of the nano-carbon ceramic fillers; in addition, the structure can reflect sunlight without damaging the thermal conductivity of the carbon material, thereby significantly reducing the absorption of sunlight by the carbon material;

[0027] 2. The water-based two-component polyurethane coating material prepared by the present invention is green and environmentally friendly. The development of a new cross-linking agent improves the adhesion, service life and weather resistance of the polyurethane coating, plays a protective role on the composite material frame, can extend the service life of the composite material frame, and has broad prospects for use.

[0028] 3. The use of acoustic resonance system to prepare new nano-carbon ceramic materials and nano-carbon ceramic sols does not require any organic solvents, is green and environmentally friendly, and meets the requirements of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0030] Figure 1 This is a scanning electron microscope photo of the nano-carbon ceramic material prepared in Example 1;

[0031] Figure 2 The synthetic route of component B, iodine-ionized 4,4'4"-trithiocyanate triphenylamine;

[0032] Figure 3 This is a comparison chart of the thermal conductivity of the coating materials prepared in Example 1 and Comparative Example 1. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The following examples use a HAM100 desktop acoustic resonance instrument (Hummingbird Acoustic Resonance, China) to prepare carbon ceramic fillers and to prepare nano carbon ceramic polyurethane coatings.

[0035] The nano-carbon ceramic powders prepared in the following examples were observed using a scanning electron microscope (SEM).

[0036] The thermal conductivity of the nano-carbon ceramic / polyurethane coating materials prepared in the following examples was tested using a laser pulse method (Netzsch LFA 467, Germany).

[0037] Example 1

[0038] This embodiment relates to a method for preparing a nano carbon ceramic / polyurethane coating material for a solar composite frame, wherein the nano carbon ceramic / polyurethane coating material comprises component A and component B. Component A comprises 40 parts of polymer emulsion, 5 parts of nano carbon ceramic powder, 0.5 parts of dispersant, 2 parts of wax emulsion, 0.2 parts of PH regulator, 1 part of film-forming aid, 1 part of thickener, 0.1 parts of defoamer, 1 part of anti-ultraviolet agent, 0.2 parts of wetting and leveling agent, 0.5 parts of antioxidant, 0.5 parts of surfactant, and 5 parts of deionized water according to the proportion of each component; component B is iodine ionized 4,4',4"-trithiocyanate triphenylamine.

[0039] The nano carbon ceramic powder is alumina@carbon powder, and its preparation process includes the following steps:

[0040] A. Self-assembly process of nano-alumina coated carbon powder (alumina@carbon powder): Alumina and carbon powder in different volume ratios (the mass ratio of carbon powder to alumina is 1:5, 1:6, 1:7, 1:8, 1:9 and 1:10) are added to the resonance cavity, loaded into the resonance instrument, and resonated in air atmosphere at room temperature. The coating time is 10-120min, the resonance acceleration is 10-200g, and 1g=9.8m / s2. After the resonance is completed, the composite filler of alumina microspheres coated with carbon powder is obtained by screening and separation.

[0041] B. Preparation process of component A: first add deionized water to the reactor, then add wax emulsion, thickener, defoamer, dispersant, and surfactant under the condition of acoustic vibration, treat for 20 minutes to make a pre-dispersion liquid; slowly add nano carbon ceramic powder alumina @ carbon powder to the pre-dispersion liquid, and continue the acoustic vibration treatment for 30 minutes; add the emulsion and the remaining additives into the reactor, and treat with the acoustic vibration system for 10 minutes until it is uniform.

[0042] C. Preparation process of component B: 4,4'4"-triaminotriphenylamine is dissolved in anhydrous tetrahydrofuran, and a tetrahydrofuran solution of thiophosgene is gradually added dropwise at 0°C. After the addition is completed, the reaction is continued for 24 hours, and then most of the solvent is removed by vacuum distillation, and the precipitate is poured into ethyl acetate and dried to obtain an intermediate; the intermediate is dissolved in chloroform, iodomethane is added, and the reaction is carried out at 60°C for 24 hours. The solvent is removed to obtain iodinated 4,4'4"-trithiocyanate triphenylamine, which is component B.

[0043] D. When used, the component A and the component B are mixed in a mass ratio of (4-9):1 to obtain the nano carbon ceramic / polyurethane coating material.

[0044] Example 2

[0045] The present embodiment relates to a method for preparing a nano-carbon ceramic / polyurethane coating material for a solar composite frame, wherein the nano-carbon ceramic / polyurethane coating material comprises component A and component B. Among them, component A comprises 70 parts of polymer emulsion, 35 parts of nano-carbon ceramic powder, 5 parts of dispersant, 3 parts of wax emulsion, 0.8 parts of PH regulator, 5 parts of film-forming aid, 5 parts of thickener, 0.5 parts of defoamer, 2 parts of anti-ultraviolet agent, 1.5 parts of wetting and leveling agent, 1 part of antioxidant, 1 part of surfactant, and 20 parts of deionized water according to the proportion of each component by mass; the component B is iodine ionized 4,4',4"-trithiocyanate triphenylamine. Among them, the nano-carbon ceramic powder is alumina@CF (carbon fiber), and its preparation process comprises the following steps:

[0046] A. Self-assembly process of nano-Al2O3 coated carbon fiber (alumina @ CF): Add different volume ratios of alumina and carbon fiber (the mass ratio of carbon fiber to Al2O3 is 1:5, 1:6, 1:7, 1:8, 1:9 and 1:10) into the resonance cavity, load it into the resonator, and resonate and coat it in air atmosphere at room temperature. The coating time is 10-120min, the resonance acceleration is 10-200g, and 1g = 9.8m / s2. After the resonance is completed, it is separated by screening to obtain a composite filler of alumina microspheres coated with carbon fiber.

[0047] B. Preparation process of component A: first add deionized water to the reactor, then add wax emulsion, thickener, defoamer, dispersant, and surfactant under the condition of acoustic vibration, and treat for 20 minutes to prepare a pre-dispersion liquid; slowly add nano carbon ceramic powder alumina @CF to the pre-dispersion liquid, and continue the acoustic vibration treatment for 30 minutes; add the emulsion and the remaining additives into the reactor, and treat with the acoustic vibration system for 10 minutes until it is uniform.

[0048] C. Preparation process of component B: 4,4'4"-triaminotriphenylamine is dissolved in anhydrous tetrahydrofuran, and a tetrahydrofuran solution of thiophosgene is gradually added dropwise at 0°C. After the addition is completed, the reaction is continued for 24 hours, and then most of the solvent is removed by vacuum distillation, and the precipitate is poured into ethyl acetate and dried to obtain an intermediate; the intermediate is dissolved in chloroform, iodomethane is added, and the reaction is carried out at 60°C for 24 hours. The solvent is removed to obtain iodinated 4,4'4"-trithiocyanate triphenylamine, which is component B.

[0049] D. When used, the component A and the component B are mixed in a mass ratio of (4-9):1 to obtain the nano carbon ceramic / polyurethane coating material.

[0050] Example 3

[0051] This embodiment relates to a method for preparing a nano carbon ceramic / polyurethane coating material for a solar composite frame, wherein the nano carbon ceramic / polyurethane coating material comprises component A and component B. Component A comprises 60 parts by mass of polymer emulsion, 30 parts by mass of nano carbon ceramic powder, 10 parts by mass of deionized water, 3 parts by mass of wax emulsion, 1 part by mass of antioxidant, 2 parts by mass of thickener, 1 part by mass of surfactant, and 2 parts by mass of anti-ultraviolet agent. The preparation process of the nano carbon ceramic powder BNNS@GNSs comprises the following steps:

[0052] A. Self-assembly process of nano BNNS coated graphene nanosheets (BNNS@GNSs): BNNS and graphene nanosheets in different volume ratios (the mass ratio of graphene nanosheets to BNNS is 1:5, 1:6, 1:7, 1:8, 1:9 and 1:10) are added to the resonance cavity, loaded into the resonator, and resonated in air atmosphere at room temperature. The coating time is 10-120min, the resonance acceleration is 10-200g, and 1g=9.8m / s2. After the resonance is completed, the composite filler of boron nitride nanosheets coated with graphene nanosheets is obtained by screening and separation.

[0053] B. Preparation process of component A: first add deionized water to the reactor, then add wax emulsion, thickener, defoamer, dispersant, and surfactant under the condition of acoustic vibration, and treat for 20 minutes to prepare a pre-dispersion liquid; slowly add nano carbon ceramic powder BNNS@GNSs to the pre-dispersion liquid, and continue to treat with acoustic vibration for 30 minutes; add the emulsion and the remaining additives into the reactor, and treat with the acoustic vibration system for 10 minutes until it is uniform.

[0054] C. Preparation process of component B: 4,4'4"-triaminotriphenylamine is dissolved in anhydrous tetrahydrofuran, and a tetrahydrofuran solution of thiophosgene is gradually added dropwise at 0°C. After the addition is completed, the reaction is continued for 24 hours, and then most of the solvent is removed by vacuum distillation, and the precipitate is poured into ethyl acetate and dried to obtain an intermediate; the intermediate is dissolved in chloroform, iodomethane is added, and the reaction is carried out at 60°C for 24 hours. The solvent is removed to obtain iodinated 4,4'4"-trithiocyanate triphenylamine, which is component B.

[0055] D. When used, the component A and the component B are mixed in a mass ratio of (4-9):1 to obtain the nano carbon ceramic / polyurethane coating material.

[0056] Comparative Example 1

[0057] This embodiment relates to a method for preparing a nano carbon ceramic / polyurethane coating material for a solar composite frame, wherein the nano carbon ceramic / polyurethane coating material comprises component A and component B. Component A comprises 50 parts of polymer emulsion, 5 parts of nano carbon ceramic powder, 5 parts of deionized water, 2% of wax emulsion, 0.5 parts of antioxidant, 1 part of thickener, 0.5 parts of surfactant, 0.1 parts of defoaming agent, and 1 part of anti-ultraviolet agent by mass. The preparation method is the same as that in Example 1, except that the alumina@carbon powder composite filler is replaced by the random alumina / carbon powder co-mixed filler.

[0058] Comparative Example 2

[0059] This embodiment relates to a method for preparing a nano carbon ceramic / polyurethane coating material for a solar composite frame, wherein the nano carbon ceramic / polyurethane coating material comprises component A and component B. Component A comprises 80 parts of polymer emulsion, 30 parts of nano carbon ceramic powder, 10 parts of deionized water, 3 parts of wax emulsion, 1 part of antioxidant, 2 parts of thickener, 0.5 parts of defoamer, 1 part of surfactant, and 2 parts of anti-ultraviolet agent according to the mass fraction of component A. The preparation method is the same as that of Example 1, except that the Al2O3@CF composite filler is replaced by the random Al2O3 / CF co-mixed filler.

[0060] Comparative Example 3

[0061] This embodiment relates to a method for preparing a nano carbon ceramic / polyurethane coating material for a solar composite frame, wherein the nano carbon ceramic / polyurethane coating material comprises component A and component B. Component A comprises 60 parts of polymer emulsion, 20 parts of nano carbon ceramic powder, 8 parts of deionized water, 3 parts of wax emulsion, 1 part of antioxidant, 1.5 parts of thickener, 0.3 parts of defoamer, 0.8 parts of surfactant, and 1.5 parts of anti-ultraviolet agent according to the mass fraction of component A. The preparation method is the same as that of Example 1, except that the BNNS@GNSs composite filler is replaced by the random BNNS / GNSs co-mixed filler.

[0062] Implementation effect: Figure 3 The comparison of the thermal conductivity of the two coating materials prepared in Example 1 and Comparative Example 1 as a function of the amount of nanomaterial added is shown. It can be seen that at the same amount of nanofiller added, the thermal conductivity of the thermal conductive coating prepared by filling the random Al2O3 / carbon powder mixed filler in Comparative Example 1 is much lower than that of the Al2O3@carbon powder coating material in Example 1, indicating that the core-shell nanostructure helps to build a thermal conductive path and improve the thermal conductivity of the coating.

[0063] In summary, the present invention provides a method for preparing a nano-carbon ceramic / polyurethane coating material for a solar composite frame with excellent adhesion, high thermal conductivity and strong weather resistance, which can greatly improve the shortcomings of insufficient thermal conductivity and short service life of the composite material frame, making the existing composite material frame more competitive in the market.

[0064] There are many practical application approaches of the present invention, and the above are only preferred embodiments of the present invention. It should be noted that the above embodiments are only used to illustrate the present invention, but are not intended to limit the scope of protection of the present invention. For those of ordinary skill in the art involved in this technology, several changes can also be made without departing from the mechanism of the present invention, and these changes should also be considered within the scope of protection of the present invention.

Claims

1. A nano-carbon ceramic / polyurethane coating material for a solar composite frame, characterized in that: The composition comprises component A and component B, wherein the mass ratio of component A to component B is 4-9:1, and component A and component B are weighed and mixed according to the proportion to obtain a nano carbon ceramic / polyurethane coating material; The component A comprises, by weight, 40-70 parts of polymer emulsion, 5-35 parts of nano carbon ceramic powder, 0.5-5 parts of dispersant, 2-3 parts of wax emulsion, 0.2-0.8 parts of pH regulator, 1-5 parts of film-forming aid, 0.5-5 parts of thickener, 0.1-0.5 parts of defoamer, 1-2 parts of UV inhibitor, 0.2-1.5 parts of wetting and leveling agent, 0.5-1 parts of antioxidant, 0.5-1 parts of surfactant and 5-20 parts of deionized water; the component B comprises iodinated 4,4',4"-trithiocyanate triphenylamine.

2. The nano carbon ceramic / polyurethane coating material for solar composite frame according to claim 1, characterized in that: The pH regulator is one or more of dimethylethanolamine, 2-amino-1methyl-propanol, and ammonia water; The film-forming aid is one or more of alcohol ester dodecaned, dibasic acid ester, diethylene glycol butyl ether, propylene glycol methyl ether or tripropylene glycol n-butyl ether; The wetting and leveling agent is one or more of polyether-modified polydimethylsiloxane and acetylene glycol; The dispersant is one or more of EFKA4500, EFKA4530 and EFKA5071.

3. According to claim 1, a nano carbon ceramic / polyurethane coating material for a solar composite frame is characterized in that The preparation steps of component A are as follows: A: First add deionized water to the reactor, then add surfactant, dispersant, thickener, defoamer under stirring, stir at 1000-2000 rpm for 10 minutes to disperse evenly; B: Slowly add nano carbon ceramic powder to the pre-dispersion liquid, stir evenly at 3000 rpm, and stir for 30 minutes; C: Add the polymer emulsion and the remaining additives into the reactor at a stirring speed of 1500 rpm and stir for 10 minutes until uniform.

4. The nano-carbon ceramic / polyurethane coating for a solar composite frame according to claim 1, characterized in that: The component B is iodine ionized 4,4'4"-trithiocyanate triphenylamine, and its preparation process is as follows: D: Dissolve 4,4'4"-triaminotriphenylamine in anhydrous tetrahydrofuran, gradually add a tetrahydrofuran solution of thiophosgene dropwise at 0°C, and after the addition is complete, continue the reaction for 24 hours, then add reduced pressure distillation to remove most of the solvent, pour into ethyl acetate to obtain a precipitate, and dry to obtain an intermediate; E: The intermediate was dissolved in chloroform, iodomethane was added, and the reaction was carried out at 60°C for 24 hours. The solvent was removed to obtain iodinated 4,4'4"-trithiocyanate triphenylamine.

5. The nano carbon ceramic / polyurethane coating material for solar composite frame according to claim 1, characterized in that: The nano-carbon ceramic powder comprises nano-carbon material and nano-ceramic material, and the proportion of each component is 1-10 parts by mass of nano-carbon material and 1-10 parts of nano-ceramic material; The nanocarbon material includes one or more of zero-dimensional nanocarbon black, one-dimensional carbon fiber (CF) or carbon nanotube (CNT), two-dimensional graphene nanosheets (GNSs) or Mxene nanosheets; The nano-ceramic material includes one or more of nano-aluminum oxide (Al2O3), nano-magnesium oxide (MgO), nano-silicon dioxide (SiO2), nano-aluminum nitride (AlN), and boron nitride nanosheets (BNNS).

6. The nano-carbon ceramic / polyurethane coating material for a solar composite frame according to claim 1, characterized in that: The preparation method of the nano carbon ceramic powder is as follows: F. Mixing the dried nano-ceramic material and the dried nano-carbon material evenly, and placing them into a mechanical resonator strengthening cavity; the strengthening cavity comprises a cylindrical inner cavity, wherein the diameter D of the inner cavity is 50-100 cm, and the ratio of the inner cavity length to the diameter is 0.2-2; G. Put the mixed material and the mechanical resonance cavity into a resonator and fix them, set the time and acceleration, the mechanical resonator generates a mechanical resonance frequency of 20 Hz-100 Hz, an amplitude of 4 mm-15 mm, and the nano-ceramic material is coated on the surface of the nano-carbon material.

7. The nano-carbon ceramic / polyurethane coating material for a solar composite frame according to claim 6, characterized in that: In step G, the preparation time is 10-120 minutes, the acceleration is 10-200g (1g=9.8m / s2), and the exciting force intensity is the exciting force generated by the exciter contained in the mechanical resonator or the intensity value that is mathematically related to the exciting force and represents the magnitude of the exciting force.

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