Phosphorus-containing graphene modified epoxy resin composite flame-retardant floor paint and preparation method thereof

Abstract

The invention relates to the technical field of new materials, and discloses a phosphorus-containing graphene modified epoxy resin composite flame-retardant floor paint, carboxylated polyaryletherketone can react with aminated graphene to obtain carboxylated polyaryletherketone modified graphene, and the carboxylated polyaryletherketone modified graphene further reacts with neopentyl glycol phosphoryl phenol to obtain the phosphorus-containing graphene modified epoxy resin composite flame-retardant floor paint. Neopentyl glycol phosphoryl polyaryletherketone modified graphene is obtained, the neopentyl glycol phosphoryl polyaryletherketone modified graphene is blended with epoxy resin, the phosphorus-containing graphene modified epoxy resin composite flame-retardant floor paint is obtained, carboxylated polyphenylene sulfide can participate in the curing process of the epoxy resin, graphene can be stably dispersed, graphene and polyphenylene sulfide can absorb energy, and the flame retardance of the floor paint is improved. Besides, after the phosphorus-containing flame retardant grafted on the surface of the graphene is combusted, a large amount of phosphorus oxyacid with the function of catalyzing the matrix to form carbon can be generated, a carbon protection layer is promoted to be formed on the surface of the matrix, and the flame retardant property of the composite floor paint is effectively enhanced in cooperation with the barrier property of the graphene.

Description

Technical Field

[0001] The invention relates to the technical field of new materials, and in particular to a phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint and a preparation method thereof. Background Art

[0002] Epoxy resin is a synthetic polymer resin with large output, complete varieties and excellent comprehensive performance. It is widely used in daily production and life. Epoxy resin floor paint prepared with epoxy resin as the matrix has excellent properties such as good heat resistance and fatigue resistance. However, the shortcomings of epoxy resin itself, such as brittleness and poor impact toughness, have greatly limited its application in the field of floor paint. Therefore, it is necessary to modify ordinary epoxy resin to solve the current problems of epoxy resin floor paint. Research has found that filling the epoxy resin matrix with inorganic nanomaterials with excellent performance, or organic polymers with obvious strengthening and toughening effects, can effectively improve the comprehensive properties of epoxy resin such as toughness and flame retardancy, thereby further expanding the application range of epoxy resin.

[0003] As a new type of inorganic nanomaterial with excellent functions, graphene has been widely studied in recent years, especially in the field of organic polymer material additives. Many Chinese patents such as CN105837790A and CN103467916A disclose a feasible method for blending graphene with an epoxy resin matrix to form an organic-inorganic hybrid composite material with excellent comprehensive properties such as mechanics, mechanical and flame retardancy, which has promoted the application of graphene. However, most of these patents do not solve the problem of graphene dispersibility. Therefore, only a small amount of graphene can be added to the matrix to avoid graphene agglomeration. The consequence is that the modification effect is limited and cannot meet the requirements. Therefore, it is necessary to modify graphene and further introduce phosphorus-containing flame retardant molecules or organic polymers with special properties through the active functional groups on its surface. On the one hand, the dispersibility of graphene can be improved, and on the other hand, the functionality of graphene can be enhanced, thereby further expanding the application range of graphene.

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint and a preparation method thereof, which solves the problem of poor toughness and flame retardancy of epoxy resin floor paint.

[0005] (II) Technical solution To achieve the above object, the present invention provides the following technical solution: a phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint, and the preparation method of the phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint comprises the following steps: (1) Dimethyl sulfoxide, toluene, 4,4'-difluorobenzophenone, 4,4'-dihydroxyphenylvaleric acid and potassium carbonate in a mass ratio of 80-180:30-60:10:8-16:6-12 g are mixed evenly, reacted at 130-150° C. for 2-4 h, then heated to 160-180° C. for 3-5 h, and after the reaction is completed, precipitated, filtered and dried to obtain a carboxylated polyaryletherketone; (2) Adding amino graphene to tetrahydrofuran solvent, dispersing it evenly by ultrasonication, adding carboxylated poly(aryletherketone), mixing evenly and transferring to an oil bath, adding dicyclohexylcarbodiimide and 4-dimethylaminopyridine, reacting at 20-40° C. for 24-36 hours, centrifuging, washing and drying after the reaction to obtain carboxylated poly(aryletherketone) modified graphene; (3) Add polyaryletherketone modified graphene to tetrahydrofuran solvent, ultrasonically disperse for 20-40 min, add p-neopentyl glycolphosphorylphenol (C 11 H 15 O4P), stirring until completely dissolved, continuing to add a dehydrating agent and a catalyst, transferring to an oil bath, reacting at 10-30° C. for 48-72 hours, and after the reaction is completed, filtering, washing and drying to obtain neopentyl glycol phosphoryl polyaryletherketone modified graphene; (4) Add epoxy resin emulsion, neopentyl glycol phosphoryl polyaryletherketone modified graphene, 0.5-2 parts by weight of defoaming agent polyether modified polysiloxane, 0.3-1 parts by weight of leveling agent modified acrylic acid and 2-4 parts by weight of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix evenly at high speed and then package to obtain phosphorus-containing graphene modified epoxy resin composite flame retardant floor paint.

[0006] Preferably, in step (2), the mass fraction of tetrahydrofuran is 600-2000 parts, the mass fraction of amination graphene is 10 parts, the mass fraction of carboxylated polyaryletherketone is 25-60 parts, the mass fraction of dicyclohexylcarbodiimide is 6-15 parts, and the mass fraction of 4-dimethylaminopyridine is 0.4-1 parts.

[0007] Preferably, in step (3), the mass fraction of tetrahydrofuran is 300-850 parts, the mass fraction of polyaryletherketone modified graphene is 10 parts, and the mass fraction of neopentyl glycol phosphophenol (C 11 H 15 The mass fraction of the catalyst is 0.1-0.3 part.

[0008] Preferably, in step (3), the dehydrating agent is dicyclohexylcarbodiimide and the catalyst is 4-dimethylaminopyridine.

[0009] Preferably, in step (4), the epoxy resin emulsion has a mass fraction of 100 parts and the neopentyl glycol phosphopoly (aryletherketone) modified graphene has a mass fraction of 6-20 parts.

[0010] 3. Beneficial technical effects Compared with the prior art, the present invention has the following beneficial technical effects: The invention discloses a phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint. 4,4'-difluorobenzophenone and 4,4'-dihydroxyphenylpentanoic acid react under the action of a catalyst potassium carbonate to generate a carboxylated polyaryletherketone. Under the action of a catalyst 4-dimethylaminopyridine and a dehydrating agent dicyclohexylcarbodiimide, the carboxyl group in the carboxylated polyaryletherketone can undergo an amidation reaction with the amino group in the amino graphene to obtain a carboxylated polyaryletherketone-modified graphene. Under the further action of 4-dimethylaminopyridine and dicyclohexylcarbodiimide, the carboxyl group in the carboxylated polyaryletherketone-modified graphene further undergoes an esterification reaction with the phenolic hydroxyl group in neopentyl glycol phosphorylphenol to obtain neopentyl glycol phosphoryl polyaryletherketone-modified graphene. Thus, a polyaryletherketone macromolecule and a phosphorus-containing flame-retardant small molecule are chemically bonded to the graphene surface by covalent grafting, thereby effectively enhancing the functionality of the graphene and expanding its application range.

[0011] The phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint is prepared by blending epoxy resin emulsion, neopentyl glycol phosphoryl polyaryletherketone modified graphene and various additives, and finally preparing the phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint. The carboxyl group in the carboxylated polyphenylene sulfide can react with the epoxy group in the epoxy resin, thereby participating in the curing process of the epoxy resin, so that the phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint has good interface affinity with the epoxy resin, thereby enabling the graphene to be stably dispersed in the epoxy resin matrix and form chemical cross-linking points, effectively improving the composite epoxy resin board The cross-linking density of the material floor paint, combined with the high strength of graphene, enhances the mechanical properties of the composite floor paint, such as impact strength, to a certain extent. Polyphenylene sulfide can form a "sea-island" structure in the epoxy resin matrix. When the matrix is ​​subjected to external force, these special "sea-island" structures can absorb a large amount of plastic deformation work, thereby further enhancing the toughness of the composite floor paint. In addition, the phosphorus-containing flame retardant grafted on the surface of graphene will generate a large amount of phosphorus oxygen-containing acid that catalyzes the carbonization of the matrix after combustion, prompting the formation of a carbon protective layer on the surface of the matrix. Combined with the barrier properties of graphene, the flame retardant properties of the composite floor paint are effectively enhanced. DETAILED DESCRIPTION

[0012] To achieve the above object, the present invention provides the following specific implementation methods and examples: A phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint, the preparation method of which comprises the following steps: (1) Dimethyl sulfoxide, toluene, 4,4'-difluorobenzophenone, 4,4'-dihydroxyphenylvaleric acid and potassium carbonate in a mass ratio of 80-180:30-60:10:8-16:6-12 g are mixed evenly, reacted at 130-150° C. for 2-4 h, then heated to 160-180° C. for 3-5 h, and after the reaction is completed, precipitated, filtered and dried to obtain a carboxylated polyaryletherketone; (2) adding 10 parts by weight of amino graphene to 600-2000 parts by weight of tetrahydrofuran solvent, uniformly dispersing by ultrasonication, adding 25-60 parts by weight of carboxylated polyaryletherketone, mixing evenly and transferring to an oil bath, adding 6-15 parts by weight of dicyclohexylcarbodiimide and 0.4-1 parts by weight of 4-dimethylaminopyridine, reacting at 20-40° C. for 24-36 hours, centrifuging after the reaction, washing and drying to obtain carboxylated polyaryletherketone modified graphene; (3) Add 10 parts by weight of poly(aryletherketone) modified graphene to 300-850 parts by weight of tetrahydrofuran solvent, perform ultrasonic dispersion for 20-40 minutes, add 0.8-2.5 parts by weight of p-neopentyl glycol phosphophenol (C 11 H 15 O4P), stirring until completely dissolved, continuing to add 2-6 parts by weight of dicyclohexylcarbodiimide and 0.1-0.3 parts by weight of 4-dimethylaminopyridine, transferring to an oil bath, reacting at 10-30° C. for 48-72 hours, and after the reaction is completed, filtering, washing and drying to obtain neopentyl glycol phosphoryl polyaryletherketone modified graphene; (4) Add 100 parts by weight of epoxy resin emulsion, 6-20 parts by weight of neopentyl glycol phosphoryl polyaryletherketone modified graphene, 0.5-2 parts by weight of defoaming agent polyether modified polysiloxane, 0.3-1 parts by weight of leveling agent modified acrylic acid and 2-4 parts by weight of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix them evenly at high speed and then package them to obtain phosphorus-containing graphene modified epoxy resin composite flame retardant floor paint.

[0013] Example 1

[0014] (1) 40 mL of dimethyl sulfoxide, 18 mL of toluene, 5 g of 4,4'-difluorobenzophenone, 4 g of 4,4'-dihydroxyphenylvaleric acid, and 3 g of potassium carbonate were mixed evenly, reacted at 130° C. for 2 h, and then heated to 160° C. for 3 h. After the reaction was completed, the mixture was precipitated, filtered, and dried to obtain a carboxylated polyaryletherketone; (2) Add 5 g of amino graphene to 340 mL of tetrahydrofuran solvent, disperse evenly by ultrasonication, add 12.5 g of carboxylated poly(aryletherketone), mix evenly and transfer to an oil bath, continue to add 3 g of dicyclohexylcarbodiimide and 0.2 g of 4-dimethylaminopyridine, react at 20 ° C for 24 h, centrifuge after the reaction, wash and dry to obtain carboxylated poly(aryletherketone) modified graphene; (3) Add 5 g of poly(aryletherketone)-modified graphene to 170 mL of tetrahydrofuran solvent, disperse it by ultrasonic for 20 min, and add 0.4 g of p-neopentyl glycolphosphorylphenol (C 11 H 15 O4P), stirring until completely dissolved, then adding 1g of dicyclohexylcarbodiimide and 0.05g of 4-dimethylaminopyridine, transferring to an oil bath, reacting at 10°C for 48h, and filtering after the reaction, washing and drying to obtain neopentyl glycol phosphoryl polyaryletherketone modified graphene; (4) Add 50 g of epoxy resin emulsion, 3 g of neopentyl glycol phosphoryl polyaryletherketone modified graphene, 0.25 g of defoaming agent polyether modified polysiloxane, 0.15 g of leveling agent modified acrylic acid and 1 g of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix them evenly at high speed and then package to obtain phosphorus-containing graphene modified epoxy resin composite flame retardant floor paint.

[0015] Example 2

[0016] (1) 50 mL of dimethyl sulfoxide, 24 mL of toluene, 5 g of 4,4'-difluorobenzophenone, 5 g of 4,4'-dihydroxyphenylvaleric acid, and 4 g of potassium carbonate were mixed evenly, reacted at 135°C for 3 h, and then heated to 165°C for 4 h. After the reaction was completed, the mixture was precipitated, filtered, and dried to obtain a carboxylated polyaryletherketone; (2) Add 5 g of amino graphene to 500 mL of tetrahydrofuran solvent, disperse evenly by ultrasonication, add 16 g of carboxylated poly(aryletherketone), mix evenly and transfer to an oil bath, continue to add 4 g of dicyclohexylcarbodiimide and 0.3 g of 4-dimethylaminopyridine, react at 25 °C for 26 h, centrifuge after the reaction, wash and dry to obtain carboxylated poly(aryletherketone) modified graphene; (3) Add 5 g of poly(aryletherketone)-modified graphene to 200 mL of tetrahydrofuran solvent, disperse it ultrasonically for 25 min, and add 0.6 g of p-neopentyl glycolphosphorylphenol (C 11 H 15 O4P), stirring until completely dissolved, then adding 1.5g of dicyclohexylcarbodiimide and 0.075g of 4-dimethylaminopyridine, transferring to an oil bath, reacting at 15°C for 56h, and filtering after the reaction, washing and drying to obtain neopentyl glycol phosphoryl polyaryletherketone modified graphene; (4) Add 50 g of epoxy resin emulsion, 5 g of neopentyl glycol phosphoryl polyaryletherketone modified graphene, 0.5 g of defoaming agent polyether modified polysiloxane, 0.15 g of leveling agent modified acrylic acid and 1.2 g of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix them evenly at high speed and then package to obtain phosphorus-containing graphene modified epoxy resin composite flame retardant floor paint.

[0017] Example 3

[0018] (1) 60 mL of dimethyl sulfoxide, 28 mL of toluene, 5 g of 4,4'-difluorobenzophenone, 6 g of 4,4'-dihydroxyphenylvaleric acid, and 4.5 g of potassium carbonate were mixed evenly, reacted at 140°C for 3 h, and then heated to 170°C for 4 h. After the reaction was completed, the mixture was precipitated, filtered, and dried to obtain a carboxylated polyaryletherketone; (2) Add 5 g of amino graphene to 800 mL of tetrahydrofuran solvent, disperse evenly by ultrasonication, add 20 g of carboxylated poly(aryletherketone), mix evenly and transfer to an oil bath, continue to add 5 g of dicyclohexylcarbodiimide and 0.35 g of 4-dimethylaminopyridine, react at 30 ° C for 30 h, centrifuge after the reaction, wash and dry to obtain carboxylated poly(aryletherketone) modified graphene; (3) Add 5 g of poly(aryletherketone)-modified graphene to 300 mL of tetrahydrofuran solvent, disperse it by ultrasonic for 30 min, and add 0.8 g of p-neopentyl glycolphosphorylphenol (C 11 H 15 O4P), stirring until completely dissolved, then adding 2g of dicyclohexylcarbodiimide and 0.1g of 4-dimethylaminopyridine, transferring to an oil bath, reacting at 20°C for 60h, filtering after the reaction, washing and drying to obtain neopentyl glycol phosphoryl polyaryletherketone modified graphene; (4) Add 50 g of epoxy resin emulsion, 7 g of neopentyl glycol phosphoryl polyaryletherketone modified graphene, 0.7 g of defoaming agent polyether modified polysiloxane, 0.3 g of leveling agent modified acrylic acid and 1.5 g of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix them evenly at high speed and then package to obtain phosphorus-containing graphene modified epoxy resin composite flame retardant floor paint.

[0019] Example 4

[0020] (1) 70 mL of dimethyl sulfoxide, 30 mL of toluene, 5 g of 4,4'-difluorobenzophenone, 7 g of 4,4'-dihydroxyphenylvaleric acid, and 5 g of potassium carbonate were mixed evenly, reacted at 145°C for 3 h, and then heated to 175°C for 4 h. After the reaction was completed, the mixture was precipitated, filtered, and dried to obtain a carboxylated polyaryletherketone; (2) Add 5 g of amino graphene to 1000 mL of tetrahydrofuran solvent, disperse evenly by ultrasonication, add 25 g of carboxylated poly(aryletherketone), mix evenly and transfer to an oil bath, continue to add 6 g of dicyclohexylcarbodiimide and 0.4 g of 4-dimethylaminopyridine, react at 35 ° C for 32 h, centrifuge after the reaction, wash and dry to obtain carboxylated poly(aryletherketone) modified graphene; (3) Add 5 g of poly(aryletherketone)-modified graphene to 400 mL of tetrahydrofuran solvent, disperse it ultrasonically for 35 min, and add 1 g of p-neopentyl glycolphosphorylphenol (C 11 H 15 O4P), stirring until completely dissolved, continuing to add 2.5g of dicyclohexylcarbodiimide and 0.125g of 4-dimethylaminopyridine, transferring to an oil bath pot, reacting at 25°C for 66h, after the reaction is completed, suction filtering, washing and drying to obtain neopentyl glycol phosphoryl polyaryletherketone modified graphene; (4) Add 50 g of epoxy resin emulsion, 9 g of neopentyl glycol phosphoryl polyaryletherketone modified graphene, 0.8 g of defoaming agent polyether modified polysiloxane, 0.4 g of leveling agent modified acrylic acid and 1.8 g of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix them evenly at high speed and then package to obtain phosphorus-containing graphene modified epoxy resin composite flame retardant floor paint.

[0021] Example 5

[0022] (1) 80 mL of dimethyl sulfoxide, 32 mL of toluene, 5 g of 4,4'-difluorobenzophenone, 8 g of 4,4'-dihydroxyphenylvaleric acid, and 6 g of potassium carbonate were mixed evenly, reacted at 150° C. for 4 h, and then heated to 180° C. for 5 h. After the reaction was completed, the mixture was precipitated, filtered, and dried to obtain a carboxylated polyaryletherketone; (2) Add 5 g of amino graphene to 1120 mL of tetrahydrofuran solvent, disperse evenly by ultrasonication, add 30 g of carboxylated poly(aryletherketone), mix evenly and transfer to an oil bath, continue to add 7.5 g of dicyclohexylcarbodiimide and 0.5 g of 4-dimethylaminopyridine, react at 40 ° C for 36 h, centrifuge after the reaction, wash and dry to obtain carboxylated poly(aryletherketone) modified graphene; (3) Add 5 g of poly(aryletherketone)-modified graphene to 470 mL of tetrahydrofuran solvent, disperse by ultrasonic for 40 min, and add 1.25 g of p-neopentyl glycolphosphorylphenol (C 11 H 15 O4P), stirring until completely dissolved, continuing to add 3g of dicyclohexylcarbodiimide and 0.15g of 4-dimethylaminopyridine, transferring to an oil bath, reacting at 30°C for 72h, and after the reaction is completed, filtering, washing and drying to obtain neopentyl glycol phosphoryl polyaryletherketone modified graphene; (4) Add 50 g of epoxy resin emulsion, 10 g of neopentyl glycol phosphoryl polyaryletherketone modified graphene, 1 g of defoaming agent polyether modified polysiloxane, 0.5 g of leveling agent modified acrylic acid and 2 g of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix them evenly at high speed and then package to obtain phosphorus-containing graphene modified epoxy resin composite flame retardant floor paint.

[0023] Comparative Example 1 (1) 45 mL of dimethyl sulfoxide, 20 mL of toluene, 5 g of 4,4'-difluorobenzophenone, 4.5 g of 4,4'-dihydroxyphenylvaleric acid, and 3.2 g of potassium carbonate were mixed evenly, reacted at 135°C for 2 h, and then heated to 165°C for 3 h. After the reaction was completed, the mixture was precipitated, filtered, and dried to obtain a carboxylated polyaryletherketone; (2) Add 5 g of amino graphene to 380 mL of tetrahydrofuran solvent, disperse evenly by ultrasonication, add 14 g of carboxylated poly(aryletherketone), mix evenly and transfer to an oil bath, continue to add 3.5 g of dicyclohexylcarbodiimide and 0.3 g of 4-dimethylaminopyridine, react at 25 °C for 26 h, centrifuge after the reaction, wash and dry to obtain carboxylated poly(aryletherketone) modified graphene; (3) Add 50 g of epoxy resin emulsion, 3.2 g of carboxylated polyaryletherketone modified graphene, 0.3 g of defoaming agent polyether modified polysiloxane, 0.2 g of leveling agent modified acrylic acid and 1.2 g of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix them evenly at high speed and then package them to obtain a graphene-modified epoxy resin composite floor paint.

[0024] The composite floor paints in the examples and comparative examples were placed in a mold for curing, and were prepared into samples with a specification of 2 mm×4 cm×4 cm. The impact strength thereof was tested using a DH-1043-50D impact strength tester.

[0025]

[0026] The composite floor paint in the embodiment and the comparative example is placed in a mold for curing, and prepared into a sample with a specification of 2mm×4cm×4cm. It is placed in a JF-3 limiting oxygen index tester, air is introduced, and ignited from the top. When it is half burned, the oxygen concentration is tested and the limiting oxygen index is calculated.

Claims

1. A phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint, characterized in that: The following steps are involved: (1) Dimethyl sulfoxide, toluene, 4,4'-difluorobenzophenone, 4,4'-dihydroxyphenylvaleric acid and potassium carbonate in a mass ratio of 80-180:30-60:10:8-16:6-12 g are mixed evenly, reacted at 130-150° C. for 2-4 h, then heated to 160-180° C. for 3-5 h, and after the reaction is completed, precipitated, filtered and dried to obtain a carboxylated polyaryletherketone; (2) Adding amino graphene to tetrahydrofuran solvent, dispersing it evenly by ultrasonication, adding carboxylated poly(aryletherketone), mixing evenly and transferring to an oil bath, adding dicyclohexylcarbodiimide and 4-dimethylaminopyridine, reacting at 20-40° C. for 24-36 hours, centrifuging, washing and drying after the reaction to obtain carboxylated poly(aryletherketone) modified graphene; (3) Add polyaryletherketone modified graphene to tetrahydrofuran solvent, ultrasonically disperse for 20-40 min, add p-neopentyl glycolphosphorylphenol (C 11 H 15 O4P), stirring until completely dissolved, continuing to add a dehydrating agent and a catalyst, transferring to an oil bath, reacting at 10-30° C. for 48-72 hours, and after the reaction is completed, filtering, washing and drying to obtain neopentyl glycol phosphoryl polyaryletherketone modified graphene; (4) Add epoxy resin emulsion, neopentyl glycol phosphoryl polyaryletherketone modified graphene, 0.5-2 parts by weight of defoaming agent polyether modified polysiloxane, 0.3-1 parts by weight of leveling agent modified acrylic acid and 2-4 parts by weight of film-forming aid dodecyl alcohol ester into a high-speed mixer, mix evenly at high speed and then package to obtain phosphorus-containing graphene modified epoxy resin composite flame retardant floor paint.

2. The phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint according to claim 1, characterized in that: In the step (2), the mass fraction of tetrahydrofuran is 600-2000 parts, the mass fraction of amination graphene is 10 parts, the mass fraction of carboxylated polyaryletherketone is 25-60 parts, the mass fraction of dicyclohexylcarbodiimide is 6-15 parts, and the mass fraction of 4-dimethylaminopyridine is 0.4-1 parts.

3. The phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint according to claim 1, characterized in that: In the step (3), the mass fraction of tetrahydrofuran is 300-850 parts, the mass fraction of polyaryletherketone modified graphene is 10 parts, and the mass fraction of neopentyl glycolphosphorylphenol (C 11 H 15 The mass fraction of O4P) is 0.8-2.5 parts, the mass fraction of dicyclohexylcarbodiimide is 2-6 parts, and the mass fraction of 4-dimethylaminopyridine is 0.1-0.3 parts.

4. The phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint according to claim 1, characterized in that: In the step (3), the dehydrating agent is dicyclohexylcarbodiimide and the catalyst is 4-dimethylaminopyridine.

5. The phosphorus-containing graphene-modified epoxy resin composite flame-retardant floor paint according to claim 1, characterized in that: In the step (4), the epoxy resin emulsion has a mass fraction of 100 parts and the neopentyl glycol phosphopoly (aryletherketone) modified graphene has a mass fraction of 6-20 parts.

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