Construction process of a ship cabin floor covering material

Abstract

This invention relates to the field of ship interior materials technology, specifically disclosing a construction process for a ship cabin floor covering material. This invention improves the dispersibility and filling density of carbon black in waterborne polyurethane by coating the carbon black surface with carboxymethyl chitosan, thereby enhancing the hardness and wear resistance of the primer. Furthermore, this invention improves the wear resistance of bentonite by loading boron nitride onto it, followed by polymerizing and grafting 1,4-butenediol and 4-styrene acid onto the surface of the composite material. The 4-styrene acid molecule contains two benzene rings, which enhance the hardness and aging resistance of the coating. The flexible alkyl segments formed by the polymerization of 1,4-butenediol improve the flexibility of the coating. Simultaneously, the hydroxyl groups in 1,4-butenediol and the carboxyl groups in 4-styrene acid can undergo cross-linking reactions with the epoxy groups of the epoxy resin, further improving the hardness and wear resistance of the coating.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship interior materials, and particularly relates to a construction process of a ship cabin floor covering material. BACKGROUND

[0002] In the field of ship and ocean engineering, cabin floor covering materials are key components for ensuring the functionality, safety and comfort of cabins. Such materials need to meet multiple performance requirements such as waterproofing, anti-slip, wear resistance and vibration and noise reduction, and need to adapt to changes in temperature, humidity and mechanical load in complex ship environments.

[0003] At present, in the manufacturing and decoration engineering of ships, the laying process of cabin floor covering materials has not yet reached an ideal technical level, and the traditional construction process still has the following problems: the surface treatment of the base material before construction is not standardized enough; the performance of the coating used has defects, mainly in the lack of durability and stability in long-term service environment, for example, polyurethane coating is prone to hydrolysis reaction in high temperature and high humidity environment, resulting in softening or peeling of the coating, and problems such as blistering, undercutting, cracking, peeling or peeling.

[0004] For example, Chinese patent document CN202210968433.0 discloses a cabin floor covering material and a preparation method thereof, which includes a silicone-modified polyurethane layer and a wear-resistant polyurethane layer arranged on the surface of the silicone-modified polyurethane layer. The problem of moisture absorption and bulging of the covering material due to water vapor absorption from the joint of the floor is solved. The silicone-modified polyurethane layer has excellent toughness and elasticity, meeting the requirements of floor covering materials for high-strength mechanical properties, and also has excellent properties such as waterproofness, high and low temperature resistance, and weather aging resistance, effectively improving the service life of the covering material and reducing the use cost. However, the wear resistance and aging resistance of the prepared covering material still need to be further improved. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application aims to provide a construction process of a ship cabin floor covering material.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A construction process of a ship cabin floor covering material, comprising the following steps:

[0008] S1, pretreating the surface of a metal base material

[0009] The surface of the metal base material is pretreated to obtain a pretreated metal base material.

[0010] In this step, the pretreatment step includes two steps of cleaning and polishing, wherein the specific process of cleaning is: the surface of the steel substrate is sequentially ultrasonically cleaned by using degreasing acetone, anhydrous ethanol and deionized water to remove the surface oil stains, and then dried for standby; then the surface of the metal substrate is polished to St2.5 grade, and then wiped with acetone to ensure that the surface is clean, dry and free of dirt before the primer construction.

[0011] S2, coating primer

[0012] The polyurethane coating is brushed on the pretreated metal substrate surface to form a primer after curing.

[0013] In this step, the coating thickness is controlled by the "volume weight" method during construction, and the primer is prepared and used immediately according to the needs of the site. The prepared primer is quickly dispersed on the surface of the construction site during construction, and then scraped evenly to prevent the primer from thickening in the bucket and affecting the effect. The prepared primer is scraped within 10 minutes.

[0014] In this step, the film thickness of the primer is 50-100 μm.

[0015] In this step, the selected polyurethane coating includes components by weight: 50-60 parts of water-based polyurethane, 4-8 parts of modified carbon black, 10-15 parts of deionized water, 1-3 parts of dispersant, 0.5-1 part of leveling agent and 0.2-0.3 part of defoaming agent.

[0016] In the technical solution disclosed in the application, the number of parts of water-based polyurethane can be selected as 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0017] The application selects water-based polyurethane as the main component of the primer. The water-based polyurethane molecular structure contains various polar groups such as hydroxyl (-OH) and amino (-NH2). These polar groups can chemically bond or physically adsorb to the surface of the coated substrate, thereby enhancing the adhesion of the primer to the substrate. The water-based polyurethane primer forms a dense film layer after drying, which can block the contact of external water, oxygen, corrosive gases and other substances with the substrate, effectively prolonging the service life of the material. At the same time, the chemical properties of the water-based polyurethane primer are relatively stable, and it can be well compatible with various topcoats, whether water-based or solvent-based topcoats, which can be well adhered to the water-based polyurethane primer.

[0018] In the technical solution disclosed in the application, the number of parts of modified carbon black can be selected as 4, 5, 6, 7, 8, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0019] In the technical scheme disclosed in the present application, the preparation method of the modified carbon black comprises: ultrasonic dispersion of carbon black in deionized water, then adding carboxymethyl chitosan, stirring uniformly, and then filtering, washing and drying to obtain the modified carbon black.

[0020] Specifically, the mass ratio of carbon black to carboxymethyl chitosan is 5-10:5-10, for example, it can be selected as 5:5, 5:8, 5:10, 8:5, 8:6, 8:10, 10:5, 10:8, 10:10, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0021] In this step, the surface of the carbon black has hydroxyl groups, and the carboxymethyl chitosan contains hydroxyl groups and amino groups, which are coated on the surface of the carbon black through hydrogen bonding, improving the dispersibility of the carbon black in the waterborne polyurethane and the compactness of the filling, thereby improving the hardness and wear resistance of the primer. At the same time, the carbon black protects the resin and other components in the primer from damage by ultraviolet light by absorbing ultraviolet light, prolonging the service life of the coating; in addition, the carboxymethyl chitosan has good film-forming properties, further enhancing the adhesion of the primer to the substrate, and the amino groups in the carboxymethyl chitosan can also react with the epoxy groups in the topcoat, increasing the crosslinking density and thereby improving the hardness and wear resistance of the coating.

[0022] In the technical scheme disclosed in the present application, the deionized water can be selected as 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, or 15 parts, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0023] In the technical scheme disclosed in the present application, the dispersant can be selected as 1 part, 1.5 parts, 2 parts, 2.5 parts, or 3 parts, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0024] The dispersant is selected from at least one of BYK111, BYK161, and BYK180.

[0025] In the technical scheme disclosed in the present application, the leveling agent can be selected as 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, or 1 part, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0026] The leveling agent is selected from BYK358N or BYK361N.

[0027] In the technical scheme disclosed in the present application, the defoaming agent can be selected as 0.2 parts, 0.25 parts, or 0.3 parts, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0028] The defoaming agent is selected from polyether-modified silicone defoaming agents.

[0029] S3, coating a topcoat

[0030] The modified epoxy resin coating is applied on the surface of the primer, and is cured to form a topcoat; wherein the modified epoxy resin coating comprises component A and component B, the component A comprises the following components in parts by weight: epoxy resin 80-100 parts, composite modified bentonite 20-30 parts, ethylene glycol diglycidyl ether 5-10 parts, dispersing agent 2-4 parts, leveling agent 0.5-1 part, defoaming agent 0.2-0.4 part; the component B comprises the following components in parts by weight: aliphatic polyamine 25-35 parts, methyldiethanolamine 3-6 parts, isopropyl alcohol 10-15 parts.

[0031] In this step, the primer is applied within 1-12 hours after drying, and the surface of the primer is ensured to be clean, dry and free of dirt before application; after the coating interval, the surface of the primer needs to be polished and cleaned with acetone to ensure that the surface is clean, dry and free of dirt.

[0032] In this step, the film thickness of the topcoat is 40-60 μm.

[0033] In the technical scheme disclosed in the application, the composite modified bentonite is prepared by the following method:

[0034] (1) The bentonite is immersed in an acid solution, heated and stirred, then filtered, washed and dried to obtain pretreated bentonite;

[0035] (2) The pretreated bentonite is dispersed in deionized water, then boric acid and urea are added and heated and stirred, then filtered, dried at low temperature, crushed and calcined in a nitrogen atmosphere to obtain a bentonite-loaded boron nitride composite material;

[0036] (3) The bentonite-loaded boron nitride composite material is dispersed in an ethanol aqueous solution, then vinyltriethoxysilane is added and stirred, then filtered, washed and dried to obtain a vinyl composite material;

[0037] (4) The vinyl composite material is dispersed in an organic solvent, then 1,4-butenediol and 4-styrene acid are added and stirred uniformly, air is discharged by introducing nitrogen, an initiator, benzoyl peroxide, is added, heated and stirred to react, then filtered, washed and dried to obtain the composite modified bentonite.

[0038] Specifically, in step (1), the acid solution can be selected from sulfuric acid solution, nitric acid solution or hydrochloric acid solution.

[0039] Specifically, in step (1), the concentration of the acid solution can be selected as 0.5-2 mol / L, for example, 0.5 mol / L, 1 mol / L, 1.5 mol / L, 2 mol / L, but not limited to the listed values, other values not listed in the value range are also applicable.

[0040] Specifically, in step (1), the temperature of the heating and stirring treatment is 50-80℃, for example, 50℃, 55℃, 60℃, 65℃, 70℃, 75℃, 80℃; the time of the heating and stirring treatment is 1-3h, for example, 1h, 1.5h, 2h, 2.5h, 3h, but not limited to the listed values, other values not listed in the value range are also applicable.

[0041] Specifically, in step (2), the mass ratio of the pretreated bentonite, boric acid and urea is 10-15:2-3:4-6.

[0042] Specifically, in step (2), the temperature of the heating and stirring treatment is 75-90℃, for example, 75℃, 80℃, 85℃, 90℃, the time of the heating and stirring treatment is 3-5h, for example, 3h, 3.5h, 4h, 4.5h, 5h; but not limited to the listed values, other values not listed in the value range are also applicable.

[0043] Specifically, in step (2), the calcination temperature is 800-1000℃, for example, 800℃, 850℃, 900℃, 950℃, 1000℃; the calcination time is 1-2h, for example, 1h, 1.5h, 2h, but not limited to the listed values, other values not listed in the value range are also applicable.

[0044] Specifically, in step (3), the mass ratio of the bentonite loaded boron nitride composite material and vinyl triethoxysilane is 8-12:1-3, for example, 8:1, 8:2, 8:3, 10:1, 10:2, 10:3, 12:1, 12:2, 12:3, but not limited to the listed values, other values not listed in the value range are also applicable.

[0045] Specifically, in step (4), the mass ratio of the vinyl composite material, 1,4-butanediol, 4-styrene acid and benzoyl peroxide is 10-15:3-5:3-5:0.5-1.

[0046] Specifically, in step (4), the temperature of the heating and stirring reaction is 70-90℃, for example, 70℃, 75℃, 80℃, 85℃, 90℃, the time of the heating and stirring reaction is 2-4h, for example, 2h, 2.5h, 3h, 3.5h, 4h, but not limited to the listed values, other values not listed in the value range are also applicable.

[0047] In the present application, the bentonite is pretreated by an acid solution to improve the surface activity of the bentonite, and then boron nitride is generated in situ on the surface of the bentonite to improve the wear resistance of the bentonite by loading the boron nitride on the bentonite; subsequently, the bentonite boron nitride composite material is surface treated by vinyltriethoxysilane to introduce carbon-carbon double bonds, which is conducive to the subsequent reaction, and then 1,4-butenediol and 4-styrene acid are polymerized and grafted on the surface of the composite material through the addition reaction between the double bonds, the 4-styrene acid molecule contains two benzene rings, the benzene ring structure has high rigidity and thermal stability, and can enhance the hardness and aging resistance of the coating, the flexible alkyl segment formed by the polymerization of 1,4-butenediol helps to absorb and dissipate impact energy, relieve stress concentration, and make the macromolecular chain not easy to be damaged, thereby improving the flexibility of the coating; meanwhile, the hydroxyl group in the 1,4-butenediol and the carboxyl group in the 4-styrene acid can crosslink with the epoxy group of the epoxy resin, further improving the hardness and wear resistance of the coating.

[0048] In this step, the modified epoxy resin coating is prepared by the following method: the raw materials are weighed according to the formula, the epoxy resin, ethylene glycol diglycidyl ether and the dispersant are uniformly mixed, then the composite modified bentonite is added, stirred at a speed of 2000-3000 r / min for 30-40 min, then the leveling agent and the defoaming agent are added, and stirred at a speed of 400-600 r / min for 10-20 min to obtain component A; the aliphatic polyamine, methyl diethanolamine and isopropyl alcohol are stirred at a speed of 400-600 r / min for 10-20 min to obtain component B; components A and B are uniformly mixed and stirred to obtain the modified epoxy resin coating.

[0049] In the technical scheme disclosed in the present application, the dispersant is selected from at least one of BYK111, BYK161 and BYK180.

[0050] In the technical scheme disclosed in the present application, the leveling agent is selected from BYK358N or BYK361N.

[0051] In the technical scheme disclosed in the present application, the defoaming agent is selected from a polyether modified organosilicon defoaming agent.

[0052] In the technical scheme disclosed in the present application, the aliphatic polyamine is selected from diethylene triamine, triethylene tetramine, tetraethylene pentamine or diethylene triamine.

[0053] Compared with the prior art, the present application has the following beneficial effects:

[0054] (1) The carboxymethyl chitosan is coated on the surface of the carbon black by hydrogen bonding in the application, which improves the dispersibility of the carbon black in the water-based polyurethane and the compactness of the filling, and further improves the hardness and wear resistance of the primer. Meanwhile, the carbon black absorbs ultraviolet rays to protect the resin and other components in the primer from being damaged by ultraviolet rays, prolonging the service life of the coating. In addition, the carboxymethyl chitosan has good film-forming properties, further enhancing the adhesion of the primer to the substrate. The amino groups in the carboxymethyl chitosan can also react with the epoxy groups in the topcoat, increasing the crosslinking density and further improving the hardness and wear resistance of the coating.

[0055] (2) The bentonite is pretreated with an acid solution in the application, which improves the surface activity of the bentonite. Then, boron nitride is generated in situ on the surface of the bentonite, which improves the wear resistance of the bentonite by loading boron nitride on the bentonite. Subsequently, the bentonite boron nitride composite material is surface treated with vinyltriethoxysilane to introduce carbon-carbon double bonds, which facilitates subsequent reactions. Through the addition reaction between double bonds, 1,4-butanediol and 4-styrene acid are polymerized and grafted on the surface of the composite material. The 4-styrene acid molecule contains two benzene rings, and the benzene ring structure has high rigidity and thermal stability, which can enhance the hardness and aging resistance of the coating. The flexible alkyl chain segment formed by the polymerization of 1,4-butanediol helps to absorb and dissipate impact energy, relieving stress concentration and making the macromolecular chain less likely to be damaged, thereby improving the flexibility of the coating. Meanwhile, the hydroxyl group in 1,4-butanediol and the carboxyl group in 4-styrene acid can crosslink with the epoxy groups of the epoxy resin, further improving the hardness and wear resistance of the coating. DETAILED DESCRIPTION

[0056] The application will be further described in detail through specific preferred embodiments, but the application is not limited to the following embodiments.

[0057] It should be noted that, unless otherwise specified, the chemical reagents involved in the application are purchased through commercial channels.

[0058] The water-based polyurethane used in the embodiments of the application is purchased from Jiangsu Zunxin New Material Technology Co., Ltd.; the mesh number of the carbon black is 400 mesh; the grade of the epoxy resin is E-51; the mesh number of the bentonite is 400 mesh; and the model of the polyether modified silicone defoamer is Tego Foamex 842.

[0059] Example 1

[0060] A construction process of a ship cabin floor covering material, comprising the following steps:

[0061] S1, the surface of the steel substrate is sequentially cleaned by ultrasonic cleaning with de-lipidized acetone, anhydrous ethanol and deionized water to remove the oil stains on the surface, dried, then the surface of the metal substrate is polished to St2.5 grade, and wiped with acetone to ensure the surface is clean, dry and free of dirt, obtaining a pretreated metal substrate;

[0062] S2, brushing polyurethane paint on the surface of the pretreated metal substrate, the coating film thickness of the primer is 80 microns, and the primer is cured to form a primer, wherein the polyurethane paint comprises components by weight: water-based polyurethane 50 parts, modified carbon black 4 parts, deionized water 10 parts, dispersant BYK111 1 part, leveling agent BYK361N 0.5 part, polyether modified silicone defoamer 0.2 part;

[0063] The preparation method of the modified carbon black comprises: dispersing 5g of carbon black in 100mL of deionized water by ultrasonic, then adding 5g of carboxymethyl chitosan, stirring uniformly, and filtering, washing and drying to obtain the modified carbon black;

[0064] S3, brushing modified epoxy resin paint on the surface of the primer, the coating film thickness of the topcoat is 50 microns, and the topcoat is cured to form a topcoat;

[0065] The preparation method of the modified epoxy resin paint is as follows: uniformly mixing 80 parts of epoxy resin, 5 parts of ethylene glycol diglycidyl ether and 2 parts of dispersant BYK111, then adding 20 parts of composite modified bentonite, stirring at a speed of 2000r / min for 30min, then adding 0.5 parts of leveling agent BYK361N and 0.2 parts of polyether modified silicone defoamer, stirring at a speed of 400r / min for 15min, to obtain component A; stirring 25 parts of triethylene tetramine, 3 parts of methyldiethanolamine and 10 parts of isopropyl alcohol at a speed of 400r / min for 15min to obtain component B; uniformly mixing component A and component B to obtain the modified epoxy resin paint;

[0066] The preparation method of the composite modified bentonite is as follows:

[0067] (1) 10g of bentonite is immersed in 100mL of 1mol / L nitric acid solution, heated and stirred at 60℃ for 2h, then filtered, washed and dried to obtain pretreated bentonite;

[0068] (2) 10g of pretreated bentonite is dispersed in 100mL of deionized water, then 2g of boric acid and 4g of urea are added, heated and stirred at 80℃ for 4h, then filtered, dried at low temperature, crushed to pass through a 400 mesh sieve, and calcined under nitrogen atmosphere, with a calcination temperature of 800℃ and a calcination time of 2h, to obtain a bentonite loaded boron nitride composite material;

[0069] (3) 10 g bentonite loaded boron nitride composite material is dispersed in 100 mL of ethanol aqueous solution (volume ratio of ethanol and water is 3:1), then 2 g of vinyl triethoxysilane is added, stirred at room temperature for 2 h, and then filtered, washed and dried to obtain a vinyl composite material;

[0070] (4) 10 g of the vinyl composite material is dispersed in 100 mL of organic solvent DMF, then 3 g of 1,4-butenediol and 3 g of 4-styrene acid are added, stirred uniformly, air is discharged by nitrogen, 0.5 g of initiator benzoyl peroxide is added, heated and stirred at 80°C for 3 h, and after the reaction is completed, filtered, washed and dried to obtain a composite modified bentonite.

[0071] Example 2

[0072] A construction process of a ship cabin floor covering material, comprising the following steps:

[0073] S1, the surface of the steel base material is sequentially ultrasonically cleaned with degreasing acetone, anhydrous ethanol and deionized water to remove the oil stains on the surface, dried, then the surface of the metal base material is polished to a grade of St2.5, and acetone is used for wiping to ensure that the surface is clean, dry and free of dirt, thereby obtaining a pretreated metal base material;

[0074] S2, the pretreated metal base material is coated with polyurethane paint, and the coating film thickness of the primer is 80 μm, and the primer is cured to form a primer, wherein the polyurethane paint comprises components by weight: water-based polyurethane 60 parts, modified carbon black 8 parts, deionized water 15 parts, dispersant BYK180 3 parts, leveling agent BYK358N 1 part, and polyether modified silicone defoaming agent 0.3 parts;

[0075] The preparation method of the modified carbon black comprises the following steps: 5 g of carbon black is ultrasonically dispersed in 100 mL of deionized water, then 8 g of carboxymethyl chitosan is added, stirred uniformly, and then filtered, washed and dried to obtain the modified carbon black;

[0076] S3, the surface of the primer is coated with a modified epoxy resin paint, and the coating film thickness of the topcoat is 40 μm, and the topcoat is cured to form a topcoat;

[0077] The preparation method of the modified epoxy resin coating is as follows: 90 parts of epoxy resin, 8 parts of ethylene glycol diglycidyl ether and 3 parts of dispersant BYK111 are uniformly mixed, then 25 parts of composite modified bentonite is added, stirred at a speed of 2000 r / min for 30 min, then 0.8 parts of leveling agent BYK361N and 0.3 parts of polyether modified silicone defoaming agent are added, stirred at a speed of 400 r / min for 15 min, to obtain component A; 30 parts of diethylene triamine, 5 parts of methyl diethanolamine and 12 parts of isopropyl alcohol are stirred at a speed of 400 r / min for 15 min to obtain component B; components A and B are uniformly mixed and stirred to obtain the modified epoxy resin coating.

[0078] The preparation method of the composite modified bentonite is as follows:

[0079] (1) 10 g of bentonite is immersed in 100 mL of 1 mol / L nitric acid solution, heated and stirred at 60°C for 2 h, then filtered, washed and dried to obtain pretreated bentonite;

[0080] (2) 15 g of pretreated bentonite is dispersed in 100 mL of deionized water, then 3 g of boric acid and 6 g of urea are added, heated and stirred at 80°C for 4 h, then filtered, dried at low temperature, crushed to pass through a 400 mesh sieve, calcined under a nitrogen atmosphere, the calcination temperature is 1000°C, and the calcination time is 1 h to obtain a bentonite loaded boron nitride composite material;

[0081] (3) 12 g of the bentonite loaded boron nitride composite material is dispersed in 100 mL of an ethanol aqueous solution (the volume ratio of ethanol to water is 3:1), then 3 g of vinyl triethoxysilane is added, stirred at room temperature for 2 h, then filtered, washed and dried to obtain a vinyl composite material;

[0082] (4) 15 g of the vinyl composite material is dispersed in 100 mL of an organic solvent DMF, then 5 g of 1,4-butenediol and 5 g of 4-styrene acid are added, stirred uniformly, air is discharged by introducing nitrogen, 1 g of initiator benzoyl peroxide is added, heated and stirred at 80°C for 3 h, after the reaction is completed, filtered, washed and dried to obtain the composite modified bentonite.

[0083] Example 3

[0084] A construction process of a ship cabin floor covering material, comprising the following steps:

[0085] S1, the surface of the steel base material is sequentially ultrasonically cleaned with degreasing acetone, anhydrous ethanol and deionized water to remove the oil stains on the surface, dried, then the surface of the metal base material is polished to a grade of St2.5, and wiped with acetone to ensure that the surface is clean, dry and free of dirt, to obtain a pretreated metal base material;

[0086] S2, brushing a polyurethane coating on the pretreated metal substrate surface, the coating film thickness of the primer is 100 μm, and the primer is cured to form a primer, wherein the polyurethane coating comprises components by weight: waterborne polyurethane 55 parts, modified carbon black 6 parts, deionized water 10 parts, dispersant BYK180 2 parts, leveling agent BYK361N 0.8 parts, polyether modified silicone defoamer 0.3 parts;

[0087] The preparation method of the modified carbon black comprises: dispersing 5 g of carbon black in 100 mL of deionized water by ultrasonic, then adding 10 g of carboxymethyl chitosan thereto, stirring uniformly, and then filtering, washing and drying to obtain the modified carbon black.

[0088] S3, brushing a modified epoxy resin coating on the surface of the primer, the coating film thickness of the topcoat is 60 μm, and the topcoat is cured to form a topcoat.

[0089] The preparation method of the modified epoxy resin coating is as follows: uniformly mixing 100 parts of epoxy resin, 10 parts of ethylene glycol diglycidyl ether and 4 parts of dispersant BYK111, then adding 30 parts of composite modified bentonite, stirring at a speed of 2000 r / min for 30 min, then adding 1 part of leveling agent BYK361N and 0.4 parts of polyether modified silicone defoamer, stirring at a speed of 400 r / min for 15 min to obtain component A; stirring 35 parts of triethylenetetramine, 6 parts of methyldiethanolamine and 15 parts of isopropyl alcohol at a speed of 400 r / min for 15 min to obtain component B; uniformly mixing component A and component B to obtain the modified epoxy resin coating.

[0090] The preparation method of the composite modified bentonite is as follows:

[0091] (1) 10 g of bentonite is immersed in 100 mL of 1 mol / L nitric acid solution, heated and stirred at 60°C for 2 h, and then filtered, washed and dried to obtain pretreated bentonite;

[0092] (2) 12 g of pretreated bentonite is dispersed in 100 mL of deionized water, then 2 g of boric acid and 5 g of urea are added thereto, heated and stirred at 75°C for 5 h, and then filtered, dried at low temperature, crushed to pass through a 400 mesh sieve, and calcined under nitrogen atmosphere, with a calcination temperature of 800°C and a calcination time of 2 h, to obtain a bentonite loaded boron nitride composite material;

[0093] (3) 8 g of the bentonite loaded boron nitride composite material is dispersed in 100 mL of an ethanol aqueous solution (the volume ratio of ethanol to water is 3:1), then 1 g of vinyltriethoxysilane is added thereto, stirred at room temperature for 2 h, and then filtered, washed and dried to obtain a vinyl composite material.

[0094] (4) 12 g of the vinyl composite material was dispersed in 100 mL of the organic solvent DMF, 3 g of 1,4-butenediol and 5 g of 4-styrene acid were then added thereto, stirred uniformly, air was discharged by nitrogen blowing, 0.8 g of the initiator benzoyl peroxide was added, heated and stirred at 70°C for 4 h, after the reaction was completed, filtration, washing and drying were performed to obtain the composite modified bentonite.

[0095] Comparative Example 1

[0096] A construction process of a ship cabin floor covering material, comprising the following steps:

[0097] S1, the surface of the steel base material was ultrasonically cleaned with degreasing acetone, anhydrous ethanol and deionized water in sequence to remove the oil stains on the surface, dried, then the surface of the metal base material was polished to a grade of St2.5, and acetone was used for wiping to ensure that the surface was clean, dry and free of dirt, thereby obtaining a pretreated metal base material;

[0098] S2, the surface of the pretreated metal base material was brushed with polyurethane paint, the coating film thickness of the primer was 80 μm, and the primer was cured to form a primer, wherein the polyurethane paint comprises components by weight: water-based polyurethane 50 parts, carbon black 4 parts, deionized water 10 parts, dispersant BYK111 1 part, leveling agent BYK361N 0.5 part, and polyether modified silicone defoaming agent 0.2 part;

[0099] S3, the surface of the primer was brushed with modified epoxy resin paint, the coating film thickness of the topcoat was 50 μm, and the topcoat was cured to form a topcoat;

[0100] The preparation method of the modified epoxy resin paint is as follows: 80 parts of epoxy resin, 5 parts of ethylene glycol diglycidyl ether and 2 parts of dispersant BYK111 were uniformly mixed, then 20 parts of composite modified bentonite was added, stirred at a speed of 2000 r / min for 30 min, then 0.5 parts of leveling agent BYK361N and 0.2 parts of polyether modified silicone defoaming agent were added, stirred at a speed of 400 r / min for 15 min to obtain component A; 25 parts of triethylene tetramine, 3 parts of methyldiethanolamine and 10 parts of isopropyl alcohol were stirred at a speed of 400 r / min for 15 min to obtain component B; components A and B were mixed and stirred uniformly to obtain the modified epoxy resin paint;

[0101] The preparation method of the composite modified bentonite is as follows:

[0102] (1) 10 g of bentonite was immersed in 100 mL of 1 mol / L nitric acid solution, heated and stirred at 60°C for 2 h, then filtered, washed and dried to obtain pretreated bentonite;

[0103] (2) 10 g of the pretreated bentonite was dispersed in 100 mL of deionized water, and then 2 g of boric acid and 4 g of urea were added thereto, and the mixture was stirred and treated at 80°C for 4 h, followed by filtration, low-temperature drying, crushing through a 400-mesh sieve, and calcination under a nitrogen atmosphere, with a calcination temperature of 800°C and a calcination time of 2 h, to obtain a bentonite-loaded boron nitride composite material;

[0104] (3) 10 g of the bentonite-loaded boron nitride composite material was dispersed in 100 mL of an ethanol aqueous solution (volume ratio of ethanol to water: 3:1), and then 2 g of vinyltriethoxysilane was added thereto, and the mixture was stirred at room temperature for 2 h, followed by filtration, washing, and drying, to obtain a vinyl composite material;

[0105] (4) 10 g of the vinyl composite material was dispersed in 100 mL of an organic solvent DMF, and then 3 g of 1,4-butenediol and 3 g of 4-styrene acid were added thereto, and the mixture was stirred, air was removed by nitrogen bubbling, 0.5 g of an initiator, benzoyl peroxide, was added, and the mixture was stirred and reacted at 80°C for 3 h, and after the reaction was completed, the mixture was filtered, washed, and dried, to obtain a composite modified bentonite.

[0106] In Comparative Example 1, the carbon black was not modified.

[0107] Comparative Example 2

[0108] A construction process of a ship cabin floor covering material, comprising the following steps:

[0109] S1, the surface of the steel base material was sequentially ultrasonically cleaned with degreasing acetone, anhydrous ethanol, and deionized water to remove the oil stains on the surface, and then the surface of the metal base material was polished to a grade of St2.5 and wiped with acetone to ensure that the surface was clean, dry, and free of dirt, thereby obtaining a pretreated metal base material;

[0110] S2, a polyurethane coating was brushed on the surface of the pretreated metal base material, and the coating film thickness of the primer was 80 μm, and the primer was cured to form a primer, wherein the polyurethane coating comprises components by weight: waterborne polyurethane 50 parts, modified carbon black 4 parts, deionized water 10 parts, dispersant BYK111 1 part, leveling agent BYK361N 0.5 part, and polyether-modified organosilicon defoaming agent 0.2 part;

[0111] The preparation method of the modified carbon black comprises the following steps: 5 g of carbon black was ultrasonically dispersed in 100 mL of deionized water, and then 5 g of carboxymethyl chitosan was added thereto, and the mixture was stirred, filtered, washed, and dried, to obtain the modified carbon black.

[0112] S3, a modified epoxy resin coating was brushed on the surface of the primer, and the coating film thickness of the topcoat was 50 μm, and the topcoat was cured to form a topcoat.

[0113] The preparation method of the modified epoxy resin coating is as follows: 80 parts of epoxy resin, 5 parts of ethylene glycol diglycidyl ether and 2 parts of dispersant BYK111 are uniformly mixed, then 20 parts of composite modified bentonite is added, stirred at a speed of 2000 r / min for 30 min, then 0.5 parts of leveling agent BYK361N and 0.2 parts of polyether modified silicone defoaming agent are added, stirred at a speed of 400 r / min for 15 min, to obtain component A; 25 parts of triethylene tetramine, 3 parts of methyldiethanolamine and 10 parts of isopropyl alcohol are stirred at a speed of 400 r / min for 15 min to obtain component B; components A and B are uniformly mixed and stirred to obtain the modified epoxy resin coating.

[0114] The preparation method of the composite modified bentonite is as follows:

[0115] (1) 10 g of bentonite is immersed in 100 mL of 1 mol / L nitric acid solution, heated and stirred at 60℃ for 2 h, then filtered, washed and dried to obtain pretreated bentonite;

[0116] (2) 10 g of pretreated bentonite is dispersed in 100 mL of ethanol aqueous solution (the volume ratio of ethanol to water is 3:1), then 2 g of vinyltriethoxysilane is added, stirred at room temperature for 2 h, then filtered, washed and dried to obtain vinyl bentonite;

[0117] (3) 10 g of vinyl bentonite is dispersed in 100 mL of organic solvent DMF, then 3 g of 1,4-butenediol and 3 g of 4-styrene acid are added, stirred uniformly, nitrogen is introduced to remove air, 0.5 g of initiator benzoyl peroxide is added, heated and stirred at 80℃ for 3 h, after the reaction is completed, filtered, washed and dried to obtain the composite modified bentonite.

[0118] Comparative Example 2 and Example 1 do not load boron nitride on bentonite.

[0119] Comparative Example 3

[0120] A construction process of a ship cabin floor covering material, comprising the following steps:

[0121] S1, the surface of the steel substrate is sequentially ultrasonically cleaned with degreasing acetone, anhydrous ethanol and deionized water to remove surface oil stains, dried, then the metal substrate surface is polished to a grade of St2.5, and acetone is used for wiping to ensure that the surface is clean, dry and free of dirt, to obtain a pretreated metal substrate;

[0122] S2, brushing polyurethane coating on the pretreated metal substrate surface, the coating film thickness of the primer is 80 pm, and the primer is cured to form a primer, wherein the polyurethane coating comprises components by weight: waterborne polyurethane 50 parts, modified carbon black 4 parts, deionized water 10 parts, dispersant BYK111 1 part, leveling agent BYK361N 0.5 part, polyether modified silicone defoamer 0.2 part;

[0123] The preparation method of the modified carbon black comprises the following steps: 5 g of carbon black is ultrasonically dispersed in 100 mL of deionized water, then 5 g of carboxymethyl chitosan is added thereto, and stirring is uniformly performed, and then filtration, washing and drying are performed to obtain the modified carbon black.

[0124] S3, brushing modified epoxy resin coating on the surface of the primer, the coating film thickness of the topcoat is 50 pm, and the topcoat is cured to form a topcoat.

[0125] The preparation method of the modified epoxy resin coating is as follows: 80 parts of epoxy resin, 5 parts of ethylene glycol diglycidyl ether and 2 parts of dispersant BYK111 are uniformly mixed, then 20 parts of composite modified bentonite is added, stirring is performed at a rotation speed of 2000 r / min for 30 min, then 0.5 parts of leveling agent BYK361N and 0.2 parts of polyether modified silicone defoamer are added, and stirring is performed at a rotation speed of 400 r / min for 15 min to obtain component A; 25 parts of triethylenetetramine, 3 parts of methyldiethanolamine and 10 parts of isopropyl alcohol are stirred at a rotation speed of 400 r / min for 15 min to obtain component B; component A and component B are uniformly mixed and stirred to obtain the modified epoxy resin coating.

[0126] The preparation method of the composite modified bentonite is as follows:

[0127] (1) 10 g of bentonite is immersed in 100 mL of 1 mol / L nitric acid solution, heated and stirred at 60°C for 2 h, and then filtered, washed and dried to obtain pretreated bentonite;

[0128] (2) 10 g of the pretreated bentonite is dispersed in 100 mL of deionized water, then 2 g of boric acid and 4 g of urea are added thereto, heated and stirred at 80°C for 4 h, and then filtered, dried at low temperature, crushed to pass through a 400 mesh sieve, and calcined under a nitrogen atmosphere, with a calcination temperature of 800°C and a calcination time of 2 h to obtain a bentonite loaded boron nitride composite material;

[0129] (3) 10 g of the bentonite loaded boron nitride composite material is dispersed in 100 mL of an ethanol aqueous solution (the volume ratio of ethanol to water is 3:1), then 2 g of vinyltriethoxysilane is added thereto, stirred at room temperature for 2 h, and then filtered, washed and dried to obtain a vinyl composite material.

[0130] (4) 10 g of the vinyl composite material was dispersed in 100 mL of the organic solvent DMF, 3 g of 1,4-butanediol was then added thereto, stirred uniformly, air was discharged by nitrogen blowing, 0.5 g of the initiator benzoyl peroxide was added, and the reaction was stirred and heated at 80°C for 3 h. After the reaction was completed, the composite modified bentonite was obtained by filtration, washing, and drying.

[0131] Comparative Example 3 and Example 1 were compared, and 4-styrene acid was not added.

[0132] The prepared coating materials of Examples 1-3 and Comparative Examples 1-3 were subjected to performance tests, and the specific steps were as follows:

[0133] Abrasion resistance test: The test was performed according to GB / T 1768-2006 “Determination of Abrasion Resistance of Pigment and Varnish by Rotating Rubber Sand Wheel Method”, and the weight loss was measured under a load of 1 kg and 1000 rotations of CS-17 wheel;

[0134] Hardness test: The test was performed according to GB / T 6739-2022 “Determination of Paint Film Hardness by Pencil Method”;

[0135] Adhesion test: The test was performed according to GB / T 5210-2006 “Adhesion Test by Pulling-off Method”;

[0136] Artificial weathering resistance test: The test was performed according to GB / T 23987-2009 “Artificial Weathering Exposure of Coatings for Exposure to Fluorescent UV and Water”, and >900 represented that the coating layer had no change in appearance after 900 h of aging test, but the coating layer changed in appearance after 1000 h, and so on.

[0137] Table 1 Performance test results of different groups

[0138]

[0139]

[0140] Finally, it should be noted that the above examples do not limit the present application in any form. For those skilled in the art, some modifications and improvements can be made on the basis of the present application. Therefore, any modification or improvement made without departing from the spirit of the present application shall fall within the scope of the present application.

Claims

1. A process for the installation of a ship's cabin floor covering material, characterized in that, The method comprises the following steps: S1, pretreating the surface of the metal substrate to obtain a pretreated metal substrate; S2, brushing polyurethane paint on the surface of the pretreated metal substrate to form a primer after curing, wherein the polyurethane paint comprises the following components by weight: 50-60 parts of water-based polyurethane, 4-8 parts of modified carbon black, 10-15 parts of deionized water, 1-3 parts of dispersant, 0.5-1 part of leveling agent, and 0.2-0.3 part of defoaming agent; The preparation method of the modified carbon black comprises the following steps: dispersing carbon black in deionized water by ultrasonic, then adding carboxymethyl chitosan into the mixture, stirring uniformly, and then filtering, washing, and drying to obtain the modified carbon black. S3, brushing modified epoxy resin paint on the surface of the primer to form a topcoat after curing; wherein the modified epoxy resin paint comprises component A and component B, the component A comprises the following components by weight: 80-100 parts of epoxy resin, 20-30 parts of composite modified bentonite, 5-10 parts of ethylene glycol diglycidyl ether, 2-4 parts of dispersant, 0.5-1 part of leveling agent, and 0.2-0.4 part of defoaming agent; the component B comprises the following components by weight: 25-35 parts of aliphatic polyamine, 3-6 parts of methyldiethanolamine, and 10-15 parts of isopropyl alcohol; The preparation method of the composite modified bentonite is as follows: (1) immersing bentonite in an acid solution, heating and stirring, then filtering, washing, and drying to obtain pretreated bentonite; (2) dispersing the pretreated bentonite in deionized water, then adding boric acid and urea into the mixture, heating and stirring, then filtering, low-temperature drying, crushing, and calcining under nitrogen atmosphere to obtain bentonite loaded with boron nitride composite material; (3) dispersing the bentonite loaded with boron nitride composite material in an ethanol aqueous solution, then adding vinyltriethoxysilane into the mixture, stirring, then filtering, washing, and drying to obtain a vinyl composite material; (4) dispersing the vinyl composite material in an organic solvent, then adding 1,4-butenediol and 4-styrene acid into the mixture, stirring uniformly, purging air with nitrogen, adding initiator benzoyl peroxide, heating and stirring to react, then filtering, washing, and drying to obtain the composite modified bentonite.

2. The construction process of claim 1, wherein, In step (2), the mass ratio of the pretreated bentonite, boric acid, and urea is 10-15:2-3:4-6.

3. The construction process of claim 1, wherein, In step (2), the heating and stirring temperature is 75-90℃, and the heating and stirring time is 3-5h; the calcining temperature is 800-1000℃, and the calcining time is 1-2h.

4. The construction process of claim 1, wherein, In step (3), the mass ratio of the bentonite loaded with boron nitride composite material and vinyltriethoxysilane is 8-12:1-3.

5. The construction process of claim 1, wherein, In step (4), the mass ratio of the vinyl composite material, 1,4-butenediol, 4-styrene acid, and benzoyl peroxide is 10-15:3-5:3-5:0.5-1.

6. The construction process of claim 1, wherein, In step (4), the heating and stirring temperature is 70-90℃, and the heating and stirring time is 2-4h.

7. The construction process of claim 1, wherein, In step S3, the preparation method of the modified epoxy resin coating is as follows: the raw materials are weighed according to the formula, the epoxy resin, ethylene glycol diglycidyl ether and the dispersant are uniformly mixed, then the composite modified bentonite is added, stirred at a speed of 2000-3000 r / min for 30-40 min, then the leveling agent and the defoaming agent are added, stirred at a speed of 400-600 r / min for 10-20 min, to obtain component A; The aliphatic polyamine, methyldiethanolamine and isopropanol are stirred at a speed of 400-600 r / min for 10-20 min to obtain component B; component A and component B are uniformly mixed and stirred to obtain the modified epoxy resin coating.

8. The construction process of claim 1, wherein, The dispersant is selected from at least one of BYK111, BYK161 and BYK180; the leveling agent is selected from BYK358N or BYK361N; and the defoaming agent is selected from a polyether modified silicone defoaming agent.

9. The construction process of claim 1, wherein, The aliphatic polyamine is selected from diethylene triamine, triethylene tetramine, tetraethylene pentamine or diethylene triamine.

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