Preparation method of efficient flame-retardant rubber paint

Abstract

The invention relates to the technical field of coatings, in particular to a preparation method of efficient flame-retardant rubber paint. The efficient flame-retardant rubber paint is prepared from the following raw materials in parts by weight: 50-70 parts of a rubber base material, 30-50 parts of a solvent, 12-25 parts of filler, 10-20 parts of a flame retardant, 5-10 parts of a repairing additive, 5-10 parts of a plasticizer and 4-8 parts of a functional additive. The mugwort raw material extract is added in the preparation process of the rubber paint, and copper chloride is added for modification after mugwort is extracted, so that flavonoid compounds and copper chloride in the mugwort extract form metal complexes, coordinate bonds are broken when the metal complexes are heated, copper ions and chloride ions are released, blue-green smoke can be released at the temperature of 200 DEG C, and the rubber paint has the advantages of environmental protection, environmental protection and the like. And in addition, the rubber paint prepared by the invention is not softened at 200 DEG C, and due to the characteristic, the abnormal temperature state can be found in time, a fire warning effect is achieved, fire prevention and control lag is avoided, and the rubber paint has a wider market prospect and is more suitable for popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings, and particularly to a preparation method of an efficient flame-retardant rubber paint. Background Art

[0002] Rubber paint, also known as leather paint, feel paint, and fluff paint, is sprayed on the surface of an object, presenting a matte or semi-matte state. It has a quite delicate and smooth feel, and an elegant and solemn appearance. It has excellent scratch resistance, weather resistance, and wear resistance, conforms to green environmental protection printing, causes no harm to the human body, has excellent workability and adhesion, and can cover up defects or flow marks in general injection molding. It is widely used in plastic products made of materials such as ABS, PVC, PC, and PS, as well as hardware, metal, bakelite, wood, ceramic and other products sprayed with special primers.

[0003] Existing, such as a flame-retardant rubber paint in Chinese Patent Publication No.: CN104693973A, is composed of the following formula and mass components: 35 - 70 parts of polyester resin, 5 - 20 parts of flame retardant, 15 - 25 parts of zinc stearate, 0.6 part of ultraviolet absorber, 2 - 10 parts of 10% sodium hexametaphosphate aqueous solution, 1 - 3 parts of wax powder, 5 - 15 parts of heavy calcium carbonate, 1 - 5 parts of film-forming auxiliary agent, 1 - 4 parts of polyacrylate, 0.1 - 0.6 part of n-butyl phosphate, 0.5 - 4 parts of colorant, 5 - 15 parts of pigment, 0.5 - 2 parts of matting agent, 0.2 - 0.3 part of flame retardant, 0.1 - 0.5 part of dispersant, 0.5 - 2 parts of anti-settling agent, 0.1 - 1.5 parts of rheology aid, 0.1 - 0.5 part of pH regulator, and the balance is water. This flame-retardant rubber paint has good flame retardant effect, and also has the advantages of easy cleaning, high hardness, good wear resistance, and is non-toxic and harmless.

[0004] Although the flame-retardant rubber paint in the above patent has good flame retardant effect, and is easy to clean, has high hardness and good wear resistance, the flame retardant temperature of the current flame-retardant rubber paint on the market is about 300°C. Its physical and chemical properties will change at high temperature and gradually become soft, and finally form a liquid and flow and desorb from the surface of the object. The change of the rubber paint at high temperature is not obvious, which easily leads to the lag of fire prevention and control. Based on this, the present invention provides a preparation method of an efficient flame-retardant rubber paint. Summary of the Invention

[0005] The purpose of the present invention is to provide a preparation method of an efficient flame-retardant rubber paint. The efficient flame-retardant rubber paint prepared by the present invention not only has a good fire warning effect, can avoid fires, but also has certain self-healing performance and good flame retardant performance, effectively improving the product competitiveness.

[0006] To achieve the above object, the present invention provides the following technical solution: A preparation method of an efficient flame-retardant rubber paint, comprising the following raw materials in parts by weight: 50-70 parts of a rubber base material, 30-50 parts of a solvent, 12-25 parts of a filler, 10-20 parts of a flame retardant, 5-10 parts of a repair additive, 5-10 parts of a plasticizer, and 4-8 parts of a functional additive.

[0007] Preferably, the rubber base material can be selected from one or a combination of natural rubber, styrene-butadiene rubber, and chloroprene rubber.

[0008] Preferably, the plasticizer can be selected from one or a combination of dioctyl phthalate and epoxidized soybean oil.

[0009] Preferably, the solvent can be selected from one or a combination of toluene or xylene.

[0010] Preferably, the filler can be selected from any one or a combination of calcium carbonate and talcum powder.

[0011] Preferably, the preparation method of the functional additive comprises the following steps: Select Artemisia argyi as the raw material and pulverize it into a powder of 20-40 mesh by a pulverizer, add it to a reflux extraction device, then add a 70% ethanol solution, and reflux for 2-3 h under a constant temperature water bath state of 70-80 °C, set the stirring speed at 200-300 r / min, then remove ethanol by rotary evaporation under reduced pressure to obtain a crude extract, add it to a chromatography column, elute with 30% ethanol to collect the fine extract, then obtain a powder after freezing, drying, and grinding, add it to a reaction kettle, and at the same time add copper chloride, set the temperature at 60-80 °C, the rotation speed at 500-600 r / min, continuously mix and process for 2-3 h to obtain a mixed solution, and separate the mixed solution by a centrifuge and vacuum dry it to obtain the functional additive.

[0012] Preferably, in the preparation process of the functional additive, the mass ratio of the 70% ethanol solution to the Artemisia argyi raw material is 1:(5-10), the diameter of the chromatography column is 5 cm, the filler is AB-8 macroporous resin, and the mass ratio of copper chloride to the powder is 5:1.

[0013] Preferably, the preparation method of the repair additive comprises the following steps: Select chitosan, acetic acid, deionized water, and epoxy resin E-51 according to a mass ratio of 2:2:96:(800-900), add them to a high-speed emulsifier, set the rotation speed at 2000-2500 r / min and emulsify for 10-20 minutes to obtain an emulsion, then add it to a constant temperature water bath reactor, add 5% glutaraldehyde, set the temperature at 40-50 °C, and process for 4-5 h under the condition of a rotation speed of 300-400 r / min, then transfer it to a centrifuge to collect the precipitate, and then transfer it to a vacuum drying oven to dry for 12-16 h and grind it into a powder of 50-100 μm, which is the repair additive.

[0014] Preferably, the preparation method of the high-efficiency flame-retardant rubber paint comprises the following steps: S1: Dissolution stage, weigh rubber base material, plasticizer and solvent as required and add them to the reaction kettle, set the temperature at 60-80°C, the stirring speed at 400-500 r / min, and continuously stir for 30-60 min; S2: Dispersion stage, increase the rotation speed of the reaction kettle to 600-800 r / min, add flame retardant, functional additive and filler, and continuously stir for 1-2 h to obtain a slurry; S3: Mixing stage, transfer the slurry to a planetary mixer, set the rotation speed at 200 r / min, add the repair additive and continuously stir for 1-2 h to prepare the high-efficiency flame-retardant rubber paint.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this preparation method, by adding the extract of Artemisia argyi raw material during the preparation of the rubber paint and adding copper chloride for modification after the extraction of Artemisia argyi, the flavonoid compounds in the Artemisia argyi extract and copper chloride form metal complexes, and the coordination bonds are broken and copper ions and chloride ions are released when heated. Blue-green smoke will be released at 200°C, and at 200°C, the rubber paint prepared by the present invention does not soften. This feature can timely detect abnormal temperature conditions, has a fire warning effect, avoids lag in fire prevention and control, has a broader market prospect, and is more suitable for promotion.

[0016] 2. In this preparation method, by adding functional additives during the preparation of the rubber paint, and the functional additives are dissolved by natural polymer chitosan under the action of acetic acid and deionized water and form an emulsion with epoxy resin E-51, and at the same time glutaraldehyde is added to carry out a cross-linking reaction to form a polymer network with a specific structure. In its entire state, chitosan will form a wall material to wrap the epoxy resin to form microcapsules. When the rubber paint generates microcracks due to external force, the stress generated by the crack propagation will break the microcapsule wall, so that the internal epoxy resin is released to the damaged area, and can react chemically with the active functional groups in the rubber matrix. These reactions form a new three-dimensional network structure to fill the crack gap and re-establish the intermolecular connection, thereby restoring the continuity and mechanical strength of the material. This process does not require external intervention and realizes self-repair, so that this rubber paint has good self-repair performance and improves the service life of the product.

[0017] 3. In this preparation method, a modified Artemisia argyi complex is introduced on the basis of traditional flame retardants. The copper ions generated by its high-temperature decomposition will further react with the polyphosphoric acid decomposed by traditional flame retardants at high temperatures, significantly enhancing the compactness and thermal stability of the carbon layer, thereby forming a vitreous coating layer to block the diffusion of heat and combustible gases. At the same time, chitosan in the introduced repair additive is a natural nitrogen-containing polymer. When decomposed at high temperatures, it will release inert gases such as ammonia and nitrogen oxides. These gases can dilute the oxygen concentration in the combustion zone and inhibit the diffusion of combustible volatiles, thereby delaying the flame propagation. Moreover, chitosan undergoes a dehydration carbonization reaction at high temperatures to generate a porous carbon layer, which has heat insulation, oxygen isolation, and smoke suppression effects. With their mutual cooperation, the flame retardant performance of this rubber paint is greatly improved, further enhancing the product competitiveness. Detailed implementation mode

[0018] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0019] This embodiment provides a preparation method of a highly flame-retardant rubber paint, including the following raw materials in parts by weight: 50 parts of rubber base material, 30 parts of solvent, 12 parts of filler, 10 parts of flame retardant, 5 parts of repair additive, 5 parts of plasticizer, and 4 parts of functional additive.

[0020] In some embodiments, the rubber base material is selected as natural rubber.

[0021] In some embodiments, the plasticizer is selected as dioctyl phthalate.

[0022] In some embodiments, the solvent is selected as toluene.

[0023] In some embodiments, the filler is selected as calcium carbonate.

[0024] In some embodiments, the preparation method of the functional additive includes the following steps: Select Artemisia argyi as the raw material and crush it into 20-mesh powder by a crusher, add it to a reflux extraction device, then add a 70% ethanol solution, reflux for 2 h under a constant temperature water bath at 70 °C, set the stirring speed at 200 r / min, then remove ethanol by rotary evaporator under reduced pressure to obtain a crude extract, add it to a chromatography column, elute with 30% ethanol to collect the fine extract, then obtain a powder after freezing, drying, and grinding, add it to a reaction kettle, and at the same time add copper chloride, set the temperature at 60 °C and the rotation speed at 500 r / min, continuously mix and process for 2 h to obtain a mixed solution, and separate the mixed solution by a centrifuge and vacuum dry it to prepare the functional additive.

[0025] In some embodiments, during the preparation of the functional additive, the mass ratio of 70% ethanol solution to Artemisia argyi raw material is 1:5, the diameter of the chromatography column is 5 cm, the packing material is AB-8 macroporous resin, and the mass ratio of copper chloride to the powder is 5:1.

[0026] In some embodiments, the preparation method of the repair additive comprises the following steps: Select chitosan, acetic acid, deionized water and epoxy resin E-51 according to a mass ratio of 2:2:96:800, add them to a high-speed emulsifier, set the rotation speed at 2000 r / min and emulsify for 10 minutes to obtain an emulsion, then add it to a constant-temperature water bath reactor, add 5% glutaraldehyde, set the temperature at 40 °C, treat it for 4 h under the conditions of a rotation speed of 300 r / min, transfer it to a centrifuge to collect the precipitate, then transfer it to a vacuum drying oven to dry for 12 h, and grind it into a powder with a particle size of 50 μm, which is the repair additive.

[0027] In some embodiments, the preparation method of the high-efficiency flame-retardant rubber paint comprises the following steps: S1: Dissolution stage, weigh rubber base material, plasticizer and solvent as required and add them to a reaction kettle, set the temperature at 60 °C, the stirring speed at 400 r / min, and continuously stir for 30 min; S2: Dispersion stage, raise the rotation speed of the reaction kettle to 600 r / min, add flame retardant, functional additive and filler, and continuously stir for 1 h to obtain a slurry; S3: Mixing stage, transfer the slurry to a planetary mixer, set the rotation speed at 200 r / min, add the repair additive and continuously stir for 1 h to obtain the high-efficiency flame-retardant rubber paint. Example 2

[0028] A preparation method of high-efficiency flame-retardant rubber paint, comprising the following raw materials in parts by weight: 70 parts of rubber base material, 50 parts of solvent, 25 parts of filler, 20 parts of flame retardant, 10 parts of repair additive, 10 parts of plasticizer, and 8 parts of functional additive.

[0029] In some embodiments, the rubber base material is selected as chloroprene rubber.

[0030] In some embodiments, the plasticizer is selected as epoxy soybean oil.

[0031] In some embodiments, the solvent is selected as xylene.

[0032] In some embodiments, the filler is selected as talcum powder.

[0033] In some embodiments, the preparation method of the functional additive comprises the following steps: Select mugwort as the raw material and crush it into 40-mesh powder by a crusher, add it to a reflux extraction device, then add a 70% ethanol solution, reflux for 3 h under a constant temperature water bath at 80°C, set the stirring speed at 300 r / min, then remove the ethanol by vacuum distillation using a rotary evaporator to obtain a crude extract, add it to a chromatography column, elute with 30% ethanol to collect the fine extract, and then obtain a powder after freezing, drying, and grinding. Then add it to a reaction kettle, and at the same time add copper chloride, set the temperature at 80°C and the rotation speed at 600 r / min, continuously mix and process for 3 h to obtain a mixed solution, and separate the mixed solution by a centrifuge and vacuum dry it to prepare the functional additive.

[0034] In some embodiments, during the preparation of the functional additive, the mass ratio of the 70% ethanol solution to the mugwort raw material is 1:10, the diameter of the chromatography column is 5 cm, the packing material is AB-8 macroporous resin, and the mass ratio of copper chloride to the powder is 5:1.

[0035] In some embodiments, the preparation method of the repair additive comprises the following steps: Select chitosan, acetic acid, deionized water, and epoxy resin E-51 according to the mass ratio of 2:2:96:900, add them to a high-speed emulsifier, set the rotation speed at 2500 r / min and emulsify for 20 minutes to obtain an emulsion, then add it to a constant temperature water bath reactor, add 5% glutaraldehyde, set the temperature at 50°C, process for 5 h under the condition of a rotation speed of 400 r / min, then transfer it to a centrifuge to collect the precipitate, and then transfer it to a vacuum drying oven to dry for 16 h and grind it into a powder with a particle size of 100 μm, which is the repair additive.

[0036] In some embodiments, the preparation method of the high-efficiency flame-retardant rubber paint comprises the following steps: S1: Dissolution stage, weigh rubber base material, plasticizer, and solvent as required and add them to a reaction kettle, set the temperature at 80°C, the stirring speed at 500 r / min, and continuously stir for 60 min; S2: Dispersion stage, increase the rotation speed of the reaction kettle to 800 r / min, add a flame retardant, a functional additive, and a filler, and continuously stir for 2 h to obtain a slurry; S3: Mixing stage, transfer the slurry to a planetary mixer, set the rotation speed at 200 r / min, add the repair additive, and continuously stir for 2 h to prepare the high-efficiency flame-retardant rubber paint. Example 3

[0037] A preparation method of a high-efficiency flame-retardant rubber paint, comprising the following raw materials in parts by weight: 60 parts of rubber base material, 40 parts of solvent, 18 parts of filler, 15 parts of flame retardant, 8 parts of repair additive, 8 parts of plasticizer, and 6 parts of functional additive.

[0038] In some embodiments, the rubber base material is selected as styrene-butadiene rubber.

[0039] In some embodiments, the plasticizer is selected as an equal combination of dioctyl phthalate and epoxidized soybean oil.

[0040] In some embodiments, the solvent is selected as an equal combination of toluene and xylene.

[0041] In some embodiments, the filler is selected as an equal combination of calcium carbonate and talc powder.

[0042] In some embodiments, the preparation method of the functional additive comprises the following steps: Select mugwort as the raw material and crush it into 30-mesh powder by a crusher, add it to a reflux extraction device, then add a 70% ethanol solution, reflux for 2.5 h under a constant temperature water bath at 75 °C, set the stirring speed at 260 r / min, then remove the ethanol by rotary evaporation under reduced pressure to obtain a crude extract, add it to a chromatography column, elute with 30% ethanol to collect the fine extract, then obtain a powder after freezing, drying and grinding, add it to a reaction kettle, add copper chloride at the same time, set the temperature at 70 °C and the rotation speed at 550 r / min, continuously mix and process for 2.5 h to obtain a mixed solution, and separate the mixed solution by a centrifuge and vacuum dry it to prepare the functional additive.

[0043] In some embodiments, during the preparation of the functional additive, the mass ratio of the 70% ethanol solution to the mugwort raw material is 1:8, the diameter of the chromatography column is 5 cm, the filler is AB-8 macroporous resin, and the mass ratio of copper chloride to the powder is 5:1.

[0044] In some embodiments, the preparation method of the repair additive comprises the following steps: Select chitosan, acetic acid, deionized water and epoxy resin E-51 according to the mass ratio of 2:2:96:850, add them to a high-speed emulsifier, set the rotation speed at 2200 r / min and emulsify for 15 minutes to obtain an emulsion, then add it to a constant temperature water bath reactor, add 5% glutaraldehyde, set the temperature at 45 °C and the rotation speed at 350 r / min, process for 4.5 h and then transfer it to a centrifuge to collect the precipitate, and then transfer it to a vacuum drying oven to dry for 14 h and grind it into a powder with a particle size of 80 μm, which is the repair additive.

[0045] In some embodiments, the preparation method of the high-efficiency flame-retardant rubber paint comprises the following steps: S1: Dissolution stage, weigh the rubber base material, plasticizer and solvent as required and add them to a reaction kettle, set the temperature at 70 °C and the stirring speed at 450 r / min, and continuously stir for 45 min; S2: Dispersion stage, increase the rotation speed of the reaction kettle to 700 r / min, add the flame retardant, functional additive and filler, and continuously stir for 1.5 h to obtain a slurry; S3: Mixing stage, transfer the slurry to a planetary mixer, set the rotation speed at 200 r / min, add the repair additive and continuously stir for 1.5 h to prepare the high-efficiency flame-retardant rubber paint.

[0046] Comparative Example 1: The difference between this comparative example and Experiment 1 is that no repair additive is added during the preparation of the highly efficient flame-retardant rubber paint in this comparative example.

[0047] Comparative Example 2: The difference between this comparative example and Experiment 1 is that no functional additive is added during the preparation of the highly efficient flame-retardant rubber paint in this comparative example.

[0048] Comparative Example 3: The difference between this comparative example and Experiment 1 is that neither repair additive nor functional additive is added during the preparation of the highly efficient flame-retardant rubber paint in this comparative example.

[0049] Comparative Example 4: The preparation method in the Chinese patent application document "A Flame-Retardant Rubber Paint" (Publication No.: CN104693973A) is adopted.

[0050] To more clearly illustrate the preparation process provided by the present invention, it is described in detail through the above examples. The samples of the highly efficient flame-retardant rubber paint made in the examples and comparative examples are tested, and the test methods are as follows: High-temperature state change: Use a muffle furnace to heat the sample to 200 °C, and record the characteristic changes of the sample during the process;

[0051] Repair performance: Use a blade to make a standard scratch (width 50 μm), repair at 60 °C for 24 h, observe the repair rate under a microscope, and the repair rate is statistically analyzed by area ratio; Flame-retardant performance: Use a thermogravimetric analyzer to perform a heating test on the sample, gradually heat up to make the sample transform from a solid state to a flowing state, and record the temperature (°C); The performance tests are carried out on the flame-retardant rubber paints prepared in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3, and Comparative Example 4, and the obtained test data are recorded in the following table:

[0052] By comparing and analyzing the relevant data in the table, it can be seen that the highly efficient flame-retardant rubber paints produced by the preparation methods of Example 1-3 and Comparative Example 2 will produce blue-green smoke at 200 °C, and the state change is obvious and easy to detect, and the abnormal temperature state can be detected in time, with a fire warning effect. Therefore, it is obtained that adding functional additives during the preparation of the highly efficient flame-retardant rubber paint has a fire warning effect and can avoid the lag of fire prevention and control. Thus, it shows that the preparation method of the highly efficient flame-retardant rubber paint provided by the present invention has a broader market prospect and is more suitable for promotion.

[0053] By comparing and analyzing the relevant data in the table, it can be seen that for the highly efficient flame-retardant rubber paint produced by using the preparation methods of Examples 1-3 and Comparative Example 1, after making a scratch with a width of 50 μm using a blade, a repair effect of over 80% can be achieved after repairing at 60°C for 24 hours. From this, it can be known that adding a repair additive during the preparation of the highly efficient flame-retardant rubber paint can effectively improve the self-repair effect of the rubber paint, extend the service life of the product, have a broader market prospect, and be more suitable for promotion.

[0054] By comparing and analyzing the relevant data in the table, it can be seen that the flame-retardant effect of the flame-retardant rubber paint produced by using the preparation methods of Examples 1-3 is better than that of the flame-retardant rubber paint produced by the preparation methods of Comparative Example 1, Comparative Example 2, Comparative Example 3, and Comparative Example 4. Moreover, by comparing and analyzing Comparative Example 1, Comparative Example 2, and Comparative Example 3, the flame-retardant performance of Comparative Example 3 is the worst. From this, it can be known that adding a repair additive and a functional additive helps to improve the flame-retardant performance of the rubber paint, have a broader market prospect, and be more suitable for promotion.

[0055] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0056] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A method for preparing a highly efficient flame retardant rubber paint, characterized in that: The invention comprises the following raw materials in parts by weight: 50-70 parts of rubber base material, 30-50 parts of solvent, 12-25 parts of filler, 10-20 parts of flame retardant, 5-10 parts of repair additive, 5-10 parts of plasticizer and 4-8 parts of functional additive.

2. The method for preparing a high-efficiency flame-retardant rubber paint according to claim 1, characterized in that: The rubber base material can be selected from one or more combinations of natural rubber, styrene-butadiene rubber and chloroprene rubber.

3. The method for preparing a high-efficiency flame-retardant rubber paint according to claim 1, characterized in that: The plasticizer can be selected from one of dioctyl phthalate and epoxy soybean oil or a combination of both.

4. The method for preparing a high-efficiency flame-retardant rubber paint according to claim 1, characterized in that: The solvent can be selected from toluene or xylene or a combination of the two.

5. The method for preparing a high-efficiency flame-retardant rubber paint according to claim 1, characterized in that: The filler can be selected from calcium carbonate and talc, or a combination of the two.

6. The method for preparing a high-efficiency flame-retardant rubber paint according to claim 1, characterized in that: The preparation method of the functional additive comprises the following steps: selecting mugwort as a raw material and crushing it into 20-40 mesh powder by a pulverizer, adding it into a reflux extraction device, then adding a 70% ethanol solution, refluxing for 2-3 hours in a constant temperature water bath at 70-80°C, setting a stirring speed of 200-300r / min, then removing ethanol by reduced pressure distillation with a rotary evaporator to obtain a crude extract, then adding it into a chromatography column, eluting and collecting a fine extract with 30% ethanol, then freezing, drying and grinding to obtain a powder, then adding it into a reactor, adding copper chloride at the same time, setting the temperature to 60-80°C, the rotation speed to 500-600r / min, continuously mixing for 2-3 hours to obtain a mixed solution, adding the mixed solution into a centrifuge for separation, and vacuum drying to obtain the functional additive.

7. The method for preparing a high-efficiency flame-retardant rubber paint according to claim 6, characterized in that: During the preparation of the functional additive, the mass ratio of the 70% ethanol solution to the mugwort raw material is 1:(5-10), the diameter of the chromatography column is 5 cm, the filler is AB-8 macroporous resin, and the mass ratio of the copper chloride to the powder is 5:

1.

8. The method for preparing a high-efficiency flame-retardant rubber paint according to claim 1, characterized in that: The preparation method of the repair additive comprises the following steps: chitosan, acetic acid, deionized water and epoxy resin E-51 are selected in a mass ratio of 2:2:96: (800-900) and added into a high-speed emulsifier, the speed is set to 2000-2500r / min for emulsification for 10-20 minutes to obtain an emulsion, and then the emulsion is added into a constant temperature water bath reactor, 5% glutaraldehyde is added, the temperature is set to 40-50°C, the speed is set to 300-400r / min for processing for 4-5h, and then the precipitate is transferred to a centrifuge to collect the precipitate, and then the precipitate is transferred to a vacuum drying oven for drying for 12-16h and then ground into a powder of 50-100μm, which is the repair additive.

9. A method for preparing a high-efficiency flame-retardant rubber paint according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Dissolution stage: weigh rubber base material, plasticizer and solvent as needed and add them into the reactor, set the temperature to 60-80℃, stir at 400-500r / min, and continue stirring for 30-60min; S2: In the dispersion stage, the speed of the reactor is increased to 600-800 r / min, flame retardants, functional additives and fillers are added, and stirring is continued for 1-2 hours to obtain slurry; S3: In the mixing stage, the slurry is transferred to a planetary mixer, the speed is set to 200 r / min, and after adding the repair additive, the stirring is continued for 1-2 hours to obtain a high-efficiency flame-retardant rubber paint.

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