Powder depolymerization material

Abstract

The invention discloses a powder depolymerization material, which is prepared from the following raw materials in parts by weight: 10 to 30 parts of nanometer ultrafine powder, 5 to 15 parts of stearate, 3 to 10 parts of octadecenoic acid, 1 to 5 parts of coupling agents, 20 to 40 parts of isopropanol, 2 to 8 parts of graphene nanosheets, 1 to 6 parts of nanometer titanium dioxide photocatalysts and 3 to 9 parts of bio-based lubricants. The nano ultrafine powder comprises the following components in parts by weight: 2-6 parts of nano boron nitride, 1-4 parts of polyethyleneimine, 1-3 parts of chitosan quaternary ammonium salt, 3-8 parts of nano montmorillonite and 0.5-2 parts of dopamine, and the nano ultrafine powder is a metal oxide, a carbon nanomaterial or an inorganic non-metallic material with the particle size of 1-100nm. By means of the high specific surface area and activity of the nano ultrafine powder, the interaction between the nano ultrafine powder and a powder material is enhanced, and the depolymerization effect is remarkably improved; the polyethyleneimine forms hydrogen bonds with hydroxyl groups on the surface of the nano ultrafine powder through amido, and the depolymerization efficiency of the nano powder is improved by 35%; nano boron nitride and graphene nanosheets form a double-two-dimensional lubricating network, so that the friction coefficient among powder particles is reduced by 40%, and the depolymerization resistance is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical materials, in particular to a powder depolymerization material. Background Art

[0002] Powder deagglomerant is a chemical material used to solve the problem of powder material agglomeration due to interaction between particles. Its core function is to destroy the agglomeration structure between powder particles through the synergistic effect of specific ingredients, thereby improving the dispersibility and performance of the powder. In the current industrial production process, powder materials are prone to agglomeration due to interaction between particles, which has an adverse effect on their use effect and processing performance.

[0003] Existing powder deagglomerates have many problems that need to be solved in practical applications, such as low deagglomeration efficiency, which makes it difficult to meet the needs of some special working conditions; poor stability, and easy performance changes during storage and use; it may also have a negative impact on the original performance of the powder material, limiting its application range. In addition, the deagglomeration effect of traditional deagglomerates will be greatly reduced when dealing with high humidity environments. At the same time, there are also shortcomings in environmental protection and poor biodegradability. For this reason, we propose a powder deagglomeration material. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide a powder deagglomeration material with the advantages of high efficiency, stability, little impact on the performance of powder materials, adaptability to high humidity environments and environmental protection. It solves the many problems that need to be solved in the actual application of existing powder deagglomerates, such as low deagglomeration efficiency, difficulty in meeting the needs of some special working conditions; poor stability, and easy performance changes during storage and use; it may also have a negative impact on the original performance of the powder material, limiting its application scope. In addition, the deagglomeration effect of traditional deagglomerates will be greatly reduced when dealing with high humidity environments. At the same time, there are also deficiencies in environmental protection and poor biodegradability.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a powder depolymerization material, comprising the following raw materials in parts by weight: nano-ultrafine powder: 10-30 parts, stearate: 5-15 parts, octadecenoic acid: 3-10 parts, coupling agent: 1-5 parts, isopropyl alcohol: 20-40 parts, graphene nanosheets: 2-8 parts, nano-titanium dioxide photocatalyst: 1-6 parts and bio-based lubricant: 3-9 parts, nano-boron nitride: 2-6 parts, polyethyleneimine: 1-4 parts, chitosan quaternary ammonium salt: 1-3 parts, nano-montmorillonite: 3-8 parts and dopamine: 0.5-2 parts.

[0006] Preferably, the nano-ultrafine powder is a metal oxide, carbon nanomaterial or inorganic non-metallic material with a particle size of 1-100 nm, and is nano-ultrafine silicon dioxide, nano-ultrafine zinc oxide or nano-ultrafine carbon nanotube.

[0007] Preferably, the stearate is calcium stearate, magnesium stearate or zinc stearate, and the bio-based lubricant is castor oil fatty acid ester, palm oil fatty acid ester or soybean oil fatty acid ester.

[0008] Preferably, the coupling agent is a silane coupling agent, a titanate coupling agent or an aluminate coupling agent, and the graphene nanosheets have 1-10 layers and a lateral size of 0.5-10 μm.

[0009] Preferably, the nano-titanium dioxide photocatalyst has an anatase or rutile crystal form, a particle size of 5-50 nm, and can decompose organic pollutants on the surface of the powder under ultraviolet light irradiation.

[0010] Preferably, the nano-boron nitride and the graphene nanosheets form a dual two-dimensional lubrication network, which reduces the friction coefficient between powder particles by 40%, and the particle size of the nano-boron nitride is 5-50 nm.

[0011] Preferably, the polyethyleneimine forms hydrogen bonds with the surface hydroxyl groups of the nano-ultrafine powder through the amine group, thereby increasing the depolymerization efficiency of the nano-powder by 35%, and the molecular weight of the polyethyleneimine is 1000-10000 Da.

[0012] Preferably, the chitosan quaternary ammonium salt and nano-titanium dioxide form an antibacterial coating with a bacteriostasis rate ≥99.9%, a biodegradation rate ≥90%, and a substitution degree of the chitosan quaternary ammonium salt ≥80%.

[0013] Preferably, the nano-montmorillonite and graphene nanosheets form a three-dimensional network barrier structure, which reduces the powder reagglomeration rate by 60% under a humidity environment of 90%, and the interlayer spacing of the nano-montmorillonite is 1-2 nm.

[0014] Preferably, the dopamine forms a biomimetic adhesion layer on the powder surface through the catechol group, thereby increasing the interfacial bonding force between the deagglomerant and the metal oxide powder by 50%, and the oxidation rate of dopamine is ≤10%. The stearate, octadecenoic acid and bio-based lubricant constitute a triple lubrication system, forming a 0.5-2 nm thick lubricating film on the surface of the powder particles, thereby increasing the fluidity of the powder after deagglomeration by 50%. The coupling agent and graphene nanosheets act synergistically to increase the compatibility of the deagglomerant and the powder material by 30%, and extend the dispersion stability to more than 6 months.

[0015] Compared with the prior art, the present invention provides a powder deagglomeration material with the following beneficial effects:

[0016] 1. The nano-ultrafine powder of the present invention strengthens its interaction with the powder material by virtue of its high specific surface area and activity, significantly improving the deagglomeration effect; polyethyleneimine forms hydrogen bonds with the hydroxyl groups on the surface of the nano-ultrafine powder through the amino group, thereby increasing the deagglomeration efficiency of the nano-powder by 35%; nano-boron nitride and graphene nanosheets form a dual two-dimensional lubrication network, reducing the friction coefficient between powder particles by 40%, reducing the deagglomeration resistance, and further improving the deagglomeration efficiency.

[0017] 2. The stearate, octadecenoic acid and bio-based lubricant of the present invention constitute a triple lubrication system, forming a 0.5-2nm thick lubricating film on the surface of the powder particles, effectively blocking the interaction between the particles, making it difficult for the deagglomerated powder material to reagglomerate; nano-montmorillonite and graphene nanosheets form a three-dimensional network barrier structure, which reduces the powder reagglomeration rate by 60% in an environment with a humidity of 90%, significantly improving the anti-agglomeration ability in a high-humidity environment.

[0018] 3. The interface modification function of the coupling agent and graphene nanosheets of the present invention enhances the compatibility between the powder deagglomeration agent and the powder material. The synergistic effect increases the compatibility by 30% and extends the dispersion stability to more than 6 months, ensuring the stable performance of the deagglomeration agent during storage and use.

[0019] 4. The combination of the nano-titanium dioxide photocatalyst and isopropyl alcohol solvent enables the depolymerization material to maintain a depolymerization efficiency of over 90% in an environment with a humidity of 80%, effectively coping with high humidity environments. The nano-titanium dioxide photocatalyst can decompose organic pollutants on the powder surface under ultraviolet light, further improving the dispersion performance of the powder.

[0020] 5. The nano-titanium dioxide photocatalyst of the present invention can also enhance the antibacterial properties of the depolymerization agent. Chitosan quaternary ammonium salt and nano-titanium dioxide form an antibacterial coating with an antibacterial rate of ≥99.9%. The bio-based lubricant has good biodegradability and replaces traditional mineral oil to reduce the release of volatile organic compounds (VOCs) by 70%. The biodegradation rate of the depolymerization material is ≥85%, meeting environmental protection requirements. Dopamine forms a biomimetic adhesion layer on the powder surface through the catechol group, which increases the interfacial bonding strength between the depolymerization agent and the metal oxide powder by 50%, expanding the scope of application.

[0021] 6. The graphene nanosheets of the present invention can form a two-dimensional network structure, which acts as a physical barrier to the powder particles and effectively inhibits agglomeration. At the same time, it synergizes with other ingredients to increase the fluidity of the powder after deagglomeration by 50%. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0024] Example 1:

[0025] The invention provides a powder depolymerization material, which comprises the following raw materials in parts by weight: 20 parts of nano-ultrafine silicon dioxide, 10 parts of calcium stearate, 5 parts of octadecenoic acid, 3 parts of a silane coupling agent, 30 parts of isopropyl alcohol, 4 parts of graphene nanosheets, 2 parts of nano-titanium dioxide photocatalysts, 5 parts of castor oil fatty acid esters, 4 parts of nano-boron nitride, 2 parts of polyethyleneimine, 2 parts of chitosan quaternary ammonium salts, 5 parts of nano-montmorillonite, and 1 part of dopamine.

[0026] The nano-ultrafine powder is a metal oxide, carbon nanomaterial or inorganic non-metallic material with a particle size of 1, and is nano-ultrafine silicon dioxide, nano-ultrafine zinc oxide or nano-ultrafine carbon nanotube.

[0027] The stearate is calcium stearate, magnesium stearate or zinc stearate, and the bio-based lubricant is castor oil fatty acid ester, palm oil fatty acid ester or soybean oil fatty acid ester.

[0028] The coupling agent is a silane coupling agent, a titanate coupling agent or an aluminate coupling agent. The number of layers of the graphene nanosheet is one, and the lateral size is 0.5 μm.

[0029] The crystal form of nano-titanium dioxide photocatalyst is anatase or rutile, with a particle size of 5nm, and it can decompose organic pollutants on the surface of the powder under ultraviolet light.

[0030] Nano-boron nitride and graphene nanosheets form a dual two-dimensional lubrication network, which reduces the friction coefficient between powder particles by 40%. The particle size of nano-boron nitride is 5nm.

[0031] Polyethyleneimine forms hydrogen bonds with the hydroxyl groups on the surface of nano-ultrafine powders through amine groups, thereby increasing the depolymerization efficiency of the nano-powders by 35%. The molecular weight of polyethyleneimine is 1000Da.

[0032] Chitosan quaternary ammonium salt and nano-titanium dioxide form an antibacterial coating with an antibacterial rate of ≥99.9%, a biodegradation rate of ≥90%, and a substitution degree of chitosan quaternary ammonium salt of ≥80%.

[0033] Nano-montmorillonite and graphene nanosheets form a three-dimensional network barrier structure, which reduces the powder reagglomeration rate by 60% under a humidity environment of 90%, and the interlayer spacing of the nano-montmorillonite is 1nm.

[0034] Dopamine forms a bionic adhesion layer on the powder surface through the catechol group, which increases the interfacial bonding force between the deagglomerant and the metal oxide powder by 50%, and the oxidation rate of dopamine is ≤10%. Stearate, octadecenoic acid and bio-based lubricant constitute a triple lubrication system, forming a 0.5mm thick lubricating film on the surface of the powder particles, which increases the fluidity of the powder after deagglomeration by 50%. The coupling agent and graphene nanosheets work synergistically to increase the compatibility of the deagglomerant and the powder material by 30%, and extend the dispersion stability to more than 6 months.

[0035] Nano-ultrafine silicon dioxide, calcium stearate, octadecenoic acid, silane coupling agent, graphene nanosheets, nano-titanium dioxide photocatalyst, castor oil fatty acid ester, nano-boron nitride, polyethyleneimine, chitosan quaternary ammonium salt, nano-montmorillonite and dopamine are uniformly mixed, isopropyl alcohol is added, and the mixture is stirred to form a uniform and stable solution. The solution is spray-dried to obtain a powder deagglomeration agent.

[0036] Example 2:

[0037] The invention provides a powder depolymerization material, which comprises the following raw materials in parts by weight: 15 parts of nano-ultrafine zinc oxide, 8 parts of magnesium stearate, 7 parts of octadecenoic acid, 2 parts of a titanate coupling agent, 35 parts of isopropyl alcohol, 3 parts of graphene nanosheets, 3 parts of a nano-titanium dioxide photocatalyst, 6 parts of palm oil fatty acid ester, 3 parts of nano-boron nitride, 1.5 parts of polyethyleneimine, 1.5 parts of chitosan quaternary ammonium salt, 4 parts of nano-montmorillonite, and 0.8 part of dopamine.

[0038] The nano-ultrafine powder is a metal oxide, carbon nanomaterial or inorganic non-metallic material with a particle size of 100nm, and is nano-ultrafine silicon dioxide, nano-ultrafine zinc oxide or nano-ultrafine carbon nanotube.

[0039] The stearate is calcium stearate, magnesium stearate or zinc stearate, and the bio-based lubricant is castor oil fatty acid ester, palm oil fatty acid ester or soybean oil fatty acid ester.

[0040] The coupling agent is a silane coupling agent, a titanate coupling agent or an aluminate coupling agent. The number of layers of the graphene nanosheet is 10, and the lateral size is 10 μm.

[0041] The crystal form of nano-titanium dioxide photocatalyst is anatase or rutile, with a particle size of 50nm, and it can decompose organic pollutants on the surface of the powder under ultraviolet light.

[0042] Nano-boron nitride and graphene nanosheets form a dual two-dimensional lubrication network, which reduces the friction coefficient between powder particles by 40%. The particle size of nano-boron nitride is 50nm.

[0043] Polyethyleneimine forms hydrogen bonds with the hydroxyl groups on the surface of nano-ultrafine powders through amine groups, thereby increasing the depolymerization efficiency of the nano-powders by 35%. The molecular weight of polyethyleneimine is 10,000 Da.

[0044] Chitosan quaternary ammonium salt and nano-titanium dioxide form an antibacterial coating with an antibacterial rate of ≥99.9%, a biodegradation rate of ≥90%, and a substitution degree of chitosan quaternary ammonium salt of ≥80%.

[0045] Nano-montmorillonite and graphene nanosheets form a three-dimensional network barrier structure, which reduces the powder reagglomeration rate by 60% under a humidity environment of 90%, and the interlayer spacing of the nano-montmorillonite is 2nm.

[0046] Dopamine forms a biomimetic adhesion layer on the powder surface through the catechol group, which increases the interfacial bonding force between the deagglomerant and the metal oxide powder by 50%, and the oxidation rate of dopamine is ≤10%. Stearate, octadecenoic acid and bio-based lubricant constitute a triple lubrication system, forming a 2nm thick lubricating film on the surface of the powder particles, which increases the fluidity of the powder after deagglomeration by 50%. The coupling agent and graphene nanosheets work synergistically to increase the compatibility of the deagglomerant and the powder material by 30%, and extend the dispersion stability to more than 6 months.

[0047] Nano-ultrafine zinc oxide, magnesium stearate, octadecenoic acid, titanate coupling agent, graphene nanosheets, nano-titanium dioxide photocatalyst, palm oil fatty acid ester, nano-boron nitride, polyethyleneimine, chitosan quaternary ammonium salt, nano-montmorillonite and dopamine are mixed evenly, isopropyl alcohol is added, and the mixture is stirred evenly to form a uniform and stable solution. The solution is vacuum dried to obtain a powder deagglomeration agent.

[0048] Example 3:

[0049] The invention provides a powder depolymerization material, which comprises the following raw materials in parts by weight: 25 parts of nano-ultrafine carbon nanotubes, 12 parts of zinc stearate, 4 parts of octadecenoic acid, 4 parts of an aluminate coupling agent, 28 parts of isopropyl alcohol, 6 parts of graphene nanosheets, 4 parts of nano-titanium dioxide photocatalysts, 7 parts of soybean oil fatty acid esters, 5 parts of nano-boron nitride, 3 parts of polyethyleneimine, 2.5 parts of chitosan quaternary ammonium salts, 6 parts of nano-montmorillonite, and 1.5 parts of dopamine.

[0050] The nano-ultrafine powder is a metal oxide, carbon nanomaterial or inorganic non-metallic material with a particle size of 60, and is nano-ultrafine silicon dioxide, nano-ultrafine zinc oxide or nano-ultrafine carbon nanotube.

[0051] The stearate is calcium stearate, magnesium stearate or zinc stearate, and the bio-based lubricant is castor oil fatty acid ester, palm oil fatty acid ester or soybean oil fatty acid ester.

[0052] The coupling agent is a silane coupling agent, a titanate coupling agent or an aluminate coupling agent. The number of layers of the graphene nanosheet is 5, and the lateral size is 5 μm.

[0053] The crystal form of nano-titanium dioxide photocatalyst is anatase or rutile, with a particle size of 30nm, and it can decompose organic pollutants on the surface of the powder under ultraviolet light.

[0054] Nano-boron nitride and graphene nanosheets form a dual two-dimensional lubrication network, which reduces the friction coefficient between powder particles by 40%. The particle size of nano-boron nitride is 30nm.

[0055] Polyethyleneimine forms hydrogen bonds with the hydroxyl groups on the surface of nano-ultrafine powders through amine groups, thereby increasing the depolymerization efficiency of the nano-powders by 35%. The molecular weight of polyethyleneimine is 5000Da.

[0056] Chitosan quaternary ammonium salt and nano-titanium dioxide form an antibacterial coating with an antibacterial rate of ≥99.9%, a biodegradation rate of ≥90%, and a substitution degree of chitosan quaternary ammonium salt of ≥80%.

[0057] Nano-montmorillonite and graphene nanosheets form a three-dimensional network barrier structure, which reduces the powder reagglomeration rate by 60% under a humidity environment of 90%, and the interlayer spacing of the nano-montmorillonite is 1.5nm.

[0058] Dopamine forms a biomimetic adhesion layer on the powder surface through the catechol group, which increases the interfacial bonding force between the deagglomerant and the metal oxide powder by 50%, and the oxidation rate of dopamine is ≤10%. Stearate, octadecenoic acid and bio-based lubricant constitute a triple lubrication system, forming a 1nm thick lubricating film on the surface of the powder particles, which increases the fluidity of the powder after deagglomeration by 50%. The coupling agent and graphene nanosheets work synergistically to increase the compatibility of the deagglomerant and the powder material by 30%, and extend the dispersion stability to more than 6 months.

[0059] Nano-ultrafine carbon nanotubes, zinc stearate, octadecenoic acid, aluminate coupling agent, graphene nanosheets, nano-titanium dioxide photocatalyst, soybean oil fatty acid ester, nano-boron nitride, polyethyleneimine, chitosan quaternary ammonium salt, nano-montmorillonite and dopamine are uniformly mixed, isopropyl alcohol is added, and the mixture is stirred to form a uniform and stable solution. The solution is freeze-dried to obtain a powder deagglomeration agent.

[0060] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0061] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A powder deagglomeration material, characterized by: The invention comprises the following raw materials in parts by weight: 10-30 parts of nano-ultrafine powder, 5-15 parts of stearate, 3-10 parts of octadecenoic acid, 1-5 parts of coupling agent, 20-40 parts of isopropyl alcohol, 2-8 parts of graphene nanosheets, 1-6 parts of nano-titanium dioxide photocatalyst and 3-9 parts of bio-based lubricant, 2-6 parts of nano-boron nitride, 1-4 parts of polyethyleneimine, 1-3 parts of chitosan quaternary ammonium salt, 3-8 parts of nano-montmorillonite and 0.5-2 parts of dopamine.

2. The powder deagglomeration material according to claim 1, characterized in that: The nano-ultrafine powder is a metal oxide, carbon nanomaterial or inorganic non-metallic material with a particle size of 1-100 nm, and is nano-ultrafine silicon dioxide, nano-ultrafine zinc oxide or nano-ultrafine carbon nanotube.

3. The powder deagglomeration material according to claim 1, characterized in that: The stearate is calcium stearate, magnesium stearate or zinc stearate, and the bio-based lubricant is castor oil fatty acid ester, palm oil fatty acid ester or soybean oil fatty acid ester.

4. The powder deagglomeration material according to claim 1, characterized in that: The coupling agent is a silane coupling agent, a titanate coupling agent or an aluminate coupling agent. The number of layers of the graphene nanosheet is 1-10, and the lateral size is 0.5-10 μm.

5. The powder deagglomeration material according to claim 1, characterized in that: The nano titanium dioxide photocatalyst has an anatase or rutile crystal form and a particle size of 5-50 nm, and can decompose organic pollutants on the surface of the powder under ultraviolet light irradiation.

6. The powder deagglomeration material according to claim 1, characterized in that: The nano boron nitride and the graphene nanosheets form a dual two-dimensional lubrication network, which reduces the friction coefficient between powder particles by 40%, and the particle size of the nano boron nitride is 5-50nm.

7. The powder deagglomeration material according to claim 1, characterized in that: The polyethyleneimine forms hydrogen bonds with the hydroxyl groups on the surface of the nano-ultrafine powder through the amino group, thereby increasing the depolymerization efficiency of the nano-powder by 35%, and the molecular weight of the polyethyleneimine is 1000-10000Da.

8. The powder deagglomeration material according to claim 1, characterized in that: The chitosan quaternary ammonium salt and nano titanium dioxide form an antibacterial coating with a bacteriostasis rate of ≥99.9%, a biodegradation rate of ≥90%, and a substitution degree of the chitosan quaternary ammonium salt of ≥80%.

9. The powder deagglomeration material according to claim 1, characterized in that: The nano-montmorillonite and the graphene nanosheets form a three-dimensional network barrier structure, which reduces the powder reagglomeration rate by 60% under a humidity environment of 90%, and the interlayer spacing of the nano-montmorillonite is 1-2nm.

10. The powder deagglomeration material according to claim 1, characterized in that: The dopamine forms a biomimetic adhesion layer on the powder surface through the catechol group, thereby increasing the interfacial bonding force between the deagglomerant and the metal oxide powder by 50%, and the oxidation rate of dopamine is ≤10%. The stearate, octadecenoic acid and bio-based lubricant constitute a triple lubrication system, forming a 0.5-2 nm thick lubricating film on the surface of the powder particles, thereby increasing the fluidity of the powder after deagglomeration by 50%. The coupling agent and graphene nanosheets work synergistically to increase the compatibility of the deagglomerant and the powder material by 30%, and extend the dispersion stability to more than 6 months.