Green low-carbon functional inorganic rock coating artistic effect paint and preparation method thereof

Abstract

The present application relates to a green and low-carbon functional inorganic rock coating artistic effect paint and a preparation method thereof, belonging to the field of coating technology. The present invention modifies the waterborne epoxy resin emulsion and introduces amino calcium carbonate and modified carboxymethyl cellulose at the same time. The multi-components work together to effectively improve the adhesion level and obtain good salt spray resistance and aging resistance.

Description

Technical Field

[0001] The present application belongs to the field of coating technology, and specifically relates to a green and low-carbon functional inorganic rock coating artistic effect paint and a preparation method thereof. Background Art

[0002] Inorganic rock coating art effect paint is a high-grade decorative material designed for creating unique wall effects. It adds artistic charm to indoor and outdoor spaces by imitating the texture and color of natural materials such as rocks, wood, and metal. It can provide a variety of styles, and has the characteristics of natural realism, environmental health, strong durability, waterproof and mildew-proof, and easy maintenance. It is suitable for family living rooms, bedrooms, kitchens, bathrooms, as well as public areas such as offices, hotels, and shopping malls. It can also be used for villa exterior walls, commercial building facades, etc., to resist adverse weather conditions and maintain long-term beauty.

[0003] A Chinese patent (publication number CN105619549A) discloses a process for repairing substrates, which includes the following operations: (1) large repair: marble glue and a curing agent mixture are mixed and applied to the substrate surface; (2) small repair: putty powder, water and white latex are mixed, left to stand, and a mixed putty is prepared, which is applied to the substrate surface, and applied twice; (3) sanding: the substrate surface putty that has been repaired in step (3) is dried for 12 to 48 hours and then sanded once, so that the putty fills the holes, cracks, burrs, depressions, etc. on the substrate board and makes it flat, and then a layer of putty A is applied, the thickness of the putty A is 0.3 mm, and after the putty A is dried, it is sanded again; (4) drying: the substrate obtained after sanding is dried until the moisture content of the board is ≤10%. The substrate surface produced by this method is flat and smooth, but the construction process is too cumbersome and the process is long. At the same time, the inorganic rock coating artistic effect paint in the prior art also has the problem of low adhesion level, which makes it easy to fall off from the substrate, and has poor salt spray resistance and aging resistance, which affects its actual use scenarios.

[0004] Therefore, it has become an urgent problem to be solved in the industry to provide a green and low-carbon functional inorganic rock coating artistic effect paint, improve the adhesion level by introducing modified components, and obtain good salt spray resistance and aging resistance. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a green and low-carbon functional inorganic rock coating artistic effect paint and a preparation method thereof. By modifying the water-based epoxy resin emulsion and introducing amino calcium carbonate and modified carboxymethyl cellulose, the multiple components work together to effectively improve the adhesion level and obtain good salt spray resistance and aging resistance.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The first aspect of the present application provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint, comprising the following steps:

[0008] Step S1: adding 30-60 parts of aluminum oxide composite material and 1-3 parts of hexadecyltrimethylammonium bromide to 800-1000 parts of waterborne epoxy resin emulsion by weight, stirring and reacting at 75-90° C. for 8-12 hours to obtain a modified waterborne epoxy resin emulsion;

[0009] Step S2: In parts by weight, 5 to 10 parts of modified waterborne epoxy resin emulsion, 20 to 30 parts of amino calcium carbonate, 12 to 15 parts of modified carboxymethyl cellulose and 0.5 to 0.8 parts of polyacrylate leveling agent are added to 40 to 50 parts of solvent, and dispersed at a rotation speed of 700 to 800 r / min for 30 to 60 minutes to obtain a green and low-carbon functional inorganic rock coating art effect paint.

[0010] In some embodiments of the present application, the preparation method of the alumina composite material includes: weighing 15 to 20 parts of titanium dioxide, 30 to 40 parts of alumina, 8 to 10 parts of methyltrioctylammonium chloride, 4 to 6 parts of 2-methyl-2,4-pentanediol, and 2 to 4 parts of polyethylene glycol by weight, mixing them evenly and then ball-milling and dispersing them for 24 to 30 hours to obtain a mixed slurry; under a nitrogen atmosphere, treating the mixed slurry at 800 to 820° C. for 10 to 12 hours, cooling to room temperature, and then crushing and grinding to obtain an alumina composite material.

[0011] In some embodiments of the present application, the epoxy equivalent of the aqueous epoxy resin emulsion is 200-500 g / eq, and the solid content is 60-65%.

[0012] The alumina composite material in the modified waterborne epoxy resin emulsion can form free Al 3+ and Ti 4+ , Al 3+ It can combine with free oxygen in the paint film to form a protective film, improving the corrosion resistance of the paint film; 4+ It can combine with free oxygen to form a four-coordinate structure, thereby achieving a shielding effect, improving the density of the paint film, reducing salt penetration, and obtaining excellent salt spray resistance.

[0013] In some embodiments of the present application, the preparation method of the amino calcium carbonate comprises: weighing 100 to 120 parts of calcium carbonate by weight, adding them to 450 to 500 parts of anhydrous ethanol, and ultrasonically dispersing for 1 to 2 hours to obtain a calcium carbonate suspension; adding 20 to 25 parts of DL-alanine to the nano calcium carbonate suspension, heating it to 75 to 80°C and stirring it for 0.5 to 1 hour, and obtaining the amino calcium carbonate after filtering, washing and drying.

[0014] In some embodiments of the present application, the particle size of the calcium carbonate is 100~500nm.

[0015] Aminated calcium carbonate is modified with DL-alanine to improve the dispersibility of calcium carbonate filler in inorganic rock coating art effect paint, and amino groups are grafted on the surface of calcium carbonate. The amino groups can react with the epoxy groups in the epoxy resin to form a cross-linked network structure, thereby improving the chemical stability and obtaining good aging resistance.

[0016] In some embodiments of the present application, the preparation method of the modified carboxymethyl cellulose comprises: adding 20 to 25 parts of carboxymethyl cellulose to 400 to 500 parts of deionized water by weight to fully dissolve, then adding 15 to 20 parts of N-hydroxysuccinimide, 10 to 15 parts of acrylic acid and 8 to 10 parts of melamine and stirring for 30 to 60 minutes, then adjusting the pH to 7.6 to 7.8, adding 25 to 30 parts of EDC·HCl solution and stirring for 1 to 3 hours, washing, and freeze-drying to obtain modified carboxymethyl cellulose.

[0017] In some embodiments of the present application, the viscosity of the carboxymethyl cellulose is 200-500 mPa·s.

[0018] Modified carboxymethyl cellulose is grafted with monomers with special functions such as N-hydroxysuccinimide and acrylic acid. The functional monomers can form hydrogen bonds or chemical bonds with the active groups on the surface of the substrate to enhance the adhesion of the inorganic rock coating art effect paint.

[0019] In some embodiments of the present application, the polyacrylate leveling agent has a density of 0.98-1.04 g / ml and a non-volatile content of 48-53 wt %.

[0020] In some embodiments of the present application, the solvent is selected from any one of ethyl acetate, propyl acetate, and butyl acetate, or a combination of at least two thereof.

[0021] The second aspect of the present application provides a green and low-carbon functional inorganic rock coating artistic effect paint prepared by the method described in the first aspect.

[0022] Compared with the prior art, the present application at least achieves the following technical effects:

[0023] (1) The artistic paint of the present invention adopts a water-based system, which is safe and environmentally friendly, and is beneficial to human health as a coating. Since it can be attached to various substrate surfaces such as cement walls, tile surfaces, PVC, PMMA (acrylic), PC, etc., it is suitable for a wide range of application scenarios. At the same time, its preparation method has few operating steps and fast construction, which greatly saves manpower and material resources and has good market application prospects.

[0024] (2) The epoxy groups in the modified waterborne epoxy resin emulsion of the present invention can combine with the amino groups of amino calcium carbonate and the carboxyl groups of modified carboxymethyl cellulose to connect the amino calcium carbonate and the modified carboxymethyl cellulose, thereby forming a three-dimensional network structure to enhance the stability of the inorganic rock coating artistic effect paint, thereby improving the aging resistance.

[0025] (3) The modified carboxymethyl cellulose of the present invention is grafted with monomers with special functions such as N-hydroxysuccinimide and acrylic acid. The functional monomers can form hydrogen bonds or chemical bonds with active groups on the surface of the substrate to enhance the adhesion of the inorganic rock coating art effect paint.

[0026] (4) The aluminum oxide composite material in the modified waterborne epoxy resin emulsion of the present invention can form free Al 3+ and Ti 4+ , Al 3+ It can combine with free oxygen in the paint film to form a protective film, improving the corrosion resistance of the paint film; 4+ It can combine with free oxygen to form a four-coordinate structure, thereby achieving a shielding effect, improving the density of the paint film, reducing salt penetration, and obtaining excellent salt spray resistance.

[0027] (5) The amino calcium carbonate of the present invention is modified by using DL-alanine to improve the dispersibility of calcium carbonate filler in inorganic rock coating artistic effect paint, and amino groups are grafted on the surface of calcium carbonate. The amino groups can react with the epoxy groups in the epoxy resin to form a cross-linked network structure, thereby improving the chemical stability and obtaining good aging resistance. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below. However, it should be understood that the description herein is only used to explain the present invention and is not used to limit the scope of the present invention.

[0029] Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention, and the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The reagents and instruments used herein are all commercially available, and the characterization means involved can refer to the relevant descriptions in the prior art, which will not be repeated herein.

[0030] The sources of some components in the embodiments and comparative examples are as follows:

[0031] Waterborne epoxy resin emulsion I, product number DERWB3002, epoxy equivalent weight 310 g / eq, solid content 63%, purchased from Dow Chemical Company, USA;

[0032] Waterborne epoxy resin emulsion II, product number K-030, epoxy equivalent weight 1150 g / eq, solid content 50%, purchased from Guangzhou Epoxy Material Technology Co., Ltd.;

[0033] Calcium carbonate I, product number GF-100, particle size 100 nm, purchased from Jiangxi Bairui Calcium Carbonate Co., Ltd.;

[0034] Calcium carbonate II, product number ACC-818, particle size 2 μm, purchased from Xinrong (Lianzhou) Powder Technology Co., Ltd.;

[0035] Calcium carbonate III, product number C886288, particle size 50 nm, purchased from Shanghai MacLean Biochemical Technology Co., Ltd.;

[0036] Carboxymethyl cellulose I, product number BH2000, viscosity 300 mPa·s, purchased from Weiyi Chemical (Suzhou) Co., Ltd.;

[0037] Carboxymethyl cellulose II, product number 9000-11-7, viscosity 1200 mPa·s, purchased from Hengshui Haoye Chemical Co., Ltd.;

[0038] Polyacrylate leveling agent, product number BYK-381, density 1.03 g / ml, non-volatile matter 52 wt%, purchased from BYK, Germany;

[0039] Ethyl acetate, CAS No. 141-78-6, was purchased from Sinopharm Chemical Reagent Co., Ltd.;

[0040] Propyl acetate, CAS No. 109-60-4, was purchased from Sinopharm Chemical Reagent Co., Ltd.;

[0041] Butyl acetate, CAS No. 123-86-4, was purchased from Sinopharm Chemical Reagent Co., Ltd.;

[0042] Hexadecyltrimethylammonium bromide, CAS No. 57-09-0, was purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0043] Titanium dioxide, product number PA86619, was purchased from Shanghai Chuangsai Technology Co., Ltd.;

[0044] Alumina, product number PA01353, was purchased from Shanghai Chuangsai Technology Co., Ltd.;

[0045] Methyltrioctyl ammonium chloride, CAS No. 5137-55-3, purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0046] 2-Methyl-2,4-pentanediol, CAS No. 107-41-5, purchased from Sinopharm Chemical Reagent Co., Ltd.;

[0047] Polyethylene glycol, catalog number PA73288, was purchased from Shanghai Chuangsai Technology Co., Ltd.;

[0048] Anhydrous ethanol, CAS No. 364-17-5, was purchased from Sinopharm Chemical Reagent Co., Ltd.;

[0049] DL-alanine, CAS No. 302-72-7, was purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0050] N-Hydroxysuccinimide, CAS No. 6066-82-6, was purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0051] Acrylic acid, CAS No. 79-10-7, was purchased from Sinopharm Chemical Reagent Co., Ltd.;

[0052] Melamine, CAS No. 108-78-1, purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0053] EDC·HCl solution, product number C10087270, was purchased from Shanghai MacLean Biochemical Technology Co., Ltd.

[0054] Example 1

[0055] This embodiment provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint, comprising the following steps:

[0056] Preparation of alumina composite material: 20 parts of titanium dioxide, 40 parts of alumina, 10 parts of methyl trioctyl ammonium chloride, 6 parts of 2-methyl-2,4-pentanediol, and 4 parts of polyethylene glycol were weighed in parts by weight, mixed evenly, and then ball-milled and dispersed for 30 hours to obtain a mixed slurry; the mixed slurry was treated at 820° C. for 10 hours under a nitrogen atmosphere, and then pulverized and ground after cooling to room temperature to obtain an alumina composite material;

[0057] Preparation of aminated calcium carbonate: 120 parts of calcium carbonate I are weighed by weight and added to 500 parts of anhydrous ethanol, and ultrasonically dispersed for 2 hours to obtain a calcium carbonate suspension; 25 parts of DL-alanine are added to the nano calcium carbonate suspension, heated to 80°C and stirred for 0.5 hours, and the aminated calcium carbonate is obtained after suction filtration, washing and drying;

[0058] Preparation of modified carboxymethyl cellulose: by weight, 25 parts of carboxymethyl cellulose I are added to 500 parts of deionized water to fully dissolve, then 20 parts of N-hydroxysuccinimide, 15 parts of acrylic acid and 10 parts of melamine are added and stirred for 60 minutes, then the pH is adjusted to 7.8, 30 parts of EDC·HCl solution are added and stirred for 3 hours, washed, and freeze-dried to obtain modified carboxymethyl cellulose;

[0059] Step S1: adding 60 parts of aluminum oxide composite material and 3 parts of hexadecyltrimethylammonium bromide to 1000 parts of waterborne epoxy resin emulsion I by weight, stirring and reacting at 90° C. for 8 hours to obtain a modified waterborne epoxy resin emulsion;

[0060] Step S2: In parts by weight, 10 parts of modified waterborne epoxy resin emulsion, 30 parts of amino calcium carbonate, 15 parts of modified carboxymethyl cellulose and 0.8 parts of polyacrylate leveling agent are added to 50 parts of ethyl acetate, and dispersed at a speed of 800 r / min for 30 minutes to obtain a green and low-carbon functional inorganic rock coating art effect paint.

[0061] Example 2

[0062] This embodiment provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint, comprising the following steps:

[0063] Preparation of alumina composite material: 15 parts of titanium dioxide, 30 parts of alumina, 8 parts of methyl trioctyl ammonium chloride, 4 parts of 2-methyl-2,4-pentanediol, and 2 parts of polyethylene glycol were weighed in parts by weight, mixed evenly, and dispersed by ball milling for 24 hours to obtain a mixed slurry; the mixed slurry was treated at 800° C. for 12 hours under a nitrogen atmosphere, and then pulverized and ground after cooling to room temperature to obtain an alumina composite material;

[0064] Preparation of aminated calcium carbonate: 100 parts of calcium carbonate I are weighed by weight and added to 450 parts of anhydrous ethanol, and ultrasonically dispersed for 1 hour to obtain a calcium carbonate suspension; 20 parts of DL-alanine are added to the nano calcium carbonate suspension, heated to 75°C and stirred for 1 hour, and the aminated calcium carbonate is obtained after suction filtration, washing and drying;

[0065] Preparation of modified carboxymethyl cellulose: by weight, 20 parts of carboxymethyl cellulose I are added to 400 parts of deionized water to fully dissolve, then 15 parts of N-hydroxysuccinimide, 10 parts of acrylic acid and 8 parts of melamine are added and stirred for 30 minutes, then the pH is adjusted to 7.6, 25 parts of EDC·HCl solution are added and stirred for 1 hour, washed, and freeze-dried to obtain modified carboxymethyl cellulose;

[0066] Step S1: adding 30 parts of aluminum oxide composite material and 1 part of hexadecyltrimethylammonium bromide to 800 parts of waterborne epoxy resin emulsion I by weight, stirring and reacting at 75° C. for 12 hours to obtain a modified waterborne epoxy resin emulsion;

[0067] Step S2: In parts by weight, 5 parts of modified waterborne epoxy resin emulsion, 20 parts of amino calcium carbonate, 12 parts of modified carboxymethyl cellulose and 0.5 parts of polyacrylate leveling agent are added to 40 parts of propyl acetate, and dispersed at a speed of 700 r / min for 60 minutes to obtain a green and low-carbon functional inorganic rock coating art effect paint.

[0068] Example 3

[0069] This embodiment provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint, comprising the following steps:

[0070] Preparation of alumina composite material: 18 parts of titanium dioxide, 35 parts of alumina, 9 parts of methyl trioctyl ammonium chloride, 5 parts of 2-methyl-2,4-pentanediol, and 3 parts of polyethylene glycol were weighed in parts by weight, mixed evenly, and then ball-milled for 28 hours to obtain a mixed slurry; the mixed slurry was treated at 810° C. for 11 hours under a nitrogen atmosphere, and then pulverized and ground after cooling to room temperature to obtain an alumina composite material;

[0071] Preparation of aminated calcium carbonate: 110 parts of calcium carbonate I were weighed by weight and added to 480 parts of anhydrous ethanol, and ultrasonically dispersed for 2 hours to obtain a calcium carbonate suspension; 24 parts of DL-alanine were added to the nano calcium carbonate suspension, heated to 78°C and stirred for 1 hour, and filtered, washed and dried to obtain aminated calcium carbonate;

[0072] Preparation of modified carboxymethyl cellulose: by weight, 23 parts of carboxymethyl cellulose I are added to 480 parts of deionized water to fully dissolve, then 18 parts of N-hydroxysuccinimide, 12 parts of acrylic acid and 9 parts of melamine are added and stirred for 50 minutes, then the pH is adjusted to 7.7, 28 parts of EDC·HCl solution are added and stirred for 2 hours, washed, and freeze-dried to obtain modified carboxymethyl cellulose;

[0073] Step S1: adding 45 parts of aluminum oxide composite material and 2 parts of hexadecyltrimethylammonium bromide to 900 parts of waterborne epoxy resin emulsion I by weight, stirring and reacting at 80° C. for 10 hours to obtain a modified waterborne epoxy resin emulsion;

[0074] Step S2: In parts by weight, 8 parts of modified waterborne epoxy resin emulsion, 25 parts of amino calcium carbonate, 14 parts of modified carboxymethyl cellulose and 0.6 parts of polyacrylate leveling agent are added to 45 parts of butyl acetate, and dispersed at a speed of 750 r / min for 50 minutes to obtain a green and low-carbon functional inorganic rock coating art effect paint.

[0075] Comparative Example 1

[0076] This comparative example provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint. The difference from Example 1 is that commercially available water-based epoxy resin emulsion I is used instead of modified water-based epoxy resin emulsion, commercially available calcium carbonate I is used instead of amino calcium carbonate, and commercially available carboxymethyl cellulose I is used instead of modified carboxymethyl cellulose.

[0077] Comparative Example 2

[0078] This comparative example provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint. The difference from comparative example 1 is that a modified water-based epoxy resin emulsion is used instead of the commercially available water-based epoxy resin emulsion I.

[0079] Comparative Example 3

[0080] This comparative example provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint. The difference from comparative example 2 is that water-based epoxy resin emulsion II (epoxy equivalent is 1150 g / eq, solid content is 50%) is used to replace the commercially available water-based epoxy resin emulsion I (epoxy equivalent is 310 g / eq, solid content is 63%) to prepare the modified water-based epoxy resin emulsion.

[0081] Comparative Example 4

[0082] This comparative example provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint, which is different from comparative example 1 in that amino calcium carbonate is used instead of calcium carbonate I.

[0083] Comparative Example 5

[0084] This comparative example provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint. The difference from comparative example 4 is that calcium carbonate II (particle size is 2 μm) is used instead of calcium carbonate I (particle size is 100 nm) to prepare amino calcium carbonate.

[0085] Comparative Example 6

[0086] This comparative example provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint. The difference from comparative example 4 is that calcium carbonate III (particle size is 50 nm) is used instead of calcium carbonate I (particle size is 100 nm) to prepare amino calcium carbonate.

[0087] Comparative Example 7

[0088] This comparative example provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint, which is different from comparative example 1 in that modified carboxymethyl cellulose is used instead of carboxymethyl cellulose I.

[0089] Comparative Example 8

[0090] This comparative example provides a method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint. The difference from comparative example 7 is that carboxymethyl cellulose II (viscosity of 1200 mPa·s) is used instead of carboxymethyl cellulose I (viscosity of 300 mPa·s) to prepare modified carboxymethyl cellulose.

[0091] The green low-carbon functional inorganic rock coating art effect paint prepared in the above examples and comparative examples was subjected to the following tests:

[0092] (1) Adhesion test

[0093] The adhesion grade is tested in accordance with the requirements of GB / T 1720-2020 Paint film scratch test.

[0094] (2) Salt spray resistance test

[0095] The salt spray resistance is tested according to the requirements of GB / T 31588.1-2015 Determination of resistance of paints and varnishes to cyclic corrosion environments Part 1: Wet (salt spray) / dry / humidity.

[0096] (3) Aging resistance test

[0097] The aging resistance is tested with reference to the requirements of GB / T 1865-2009 Paints and varnishes - Artificial weathering and artificial radiation exposure - filtered xenon arc radiation.

[0098] The performance test results are shown in Table 1:

[0099] Table 1 Performance test results

[0100]

[0101] It can be seen from the above performance test results that Examples 1-3 have good effects, with an adhesion grade of 1, a salt spray resistance of >360, and an aging resistance of >1000h; this is because the present invention modifies the water-based epoxy resin emulsion and introduces amino calcium carbonate and modified carboxymethyl cellulose at the same time, and the multiple components work together to effectively improve the adhesion grade and obtain good salt spray resistance and aging resistance.

[0102] The comparative example, however, did not adopt the necessary technical solutions, resulting in its performance being significantly worse than that of the embodiment. Compared with Example 1, Comparative Example 1 uses commercially available waterborne epoxy resin emulsion I to replace the modified waterborne epoxy resin emulsion, commercially available calcium carbonate I to replace amino calcium carbonate, and commercially available carboxymethyl cellulose I to replace modified carboxymethyl cellulose, and the adhesion level is reduced, the salt spray resistance is poor, and the aging resistance is poor; Compared with Comparative Example 1, Comparative Example 2 uses modified waterborne epoxy resin emulsion to replace commercially available waterborne epoxy resin emulsion I, and the salt spray resistance is improved; Compared with Comparative Example 2, Comparative Example 3. The water-based epoxy resin emulsion II (epoxy equivalent of 1150 g / eq, solid content of 50%) was used to replace the commercially available water-based epoxy resin emulsion I (epoxy equivalent of 310 g / eq, solid content of 63%) to prepare the modified water-based epoxy resin emulsion. Due to the excessive epoxy equivalent of the water-based epoxy resin emulsion II, the modification effect was not good, so the salt spray resistance was poor. Compared with comparative example 1, comparative example 4 used amino calcium carbonate instead of calcium carbonate I, and the aging resistance was Compared with Comparative Example 4, Comparative Example 5 uses calcium carbonate II (particle size of 2 μm) to replace calcium carbonate I (particle size of 100 nm) to prepare amino calcium carbonate. Since the particle size of calcium carbonate II is too large, the modification effect is not good, so the aging resistance is poor; Compared with Comparative Example 4, Comparative Example 6 uses calcium carbonate III (particle size of 50 nm) to replace calcium carbonate I (particle size of 100 nm) to prepare amino calcium carbonate. Since the particle size of calcium carbonate III is too small, the modification effect is not good, so the aging resistance is poor; Compared with Comparative Example 1, Comparative Example 7 uses modified carboxymethyl cellulose to replace carboxymethyl cellulose I, and the adhesion grade is improved; Compared with Comparative Example 7, Comparative Example 8 uses carboxymethyl cellulose II (viscosity of 1200 mPa·s) to replace carboxymethyl cellulose I (viscosity of 300 mPa·s) to prepare modified carboxymethyl cellulose. Since the viscosity of carboxymethyl cellulose II is too large, the modification effect is not good, so the adhesion grade is reduced.

[0103] The applicant declares that the present application is explained through the above-mentioned embodiments, but the present application is not limited to the above-mentioned embodiments, that is, it does not mean that the present application must rely on the above-mentioned embodiments to be implemented. The technicians in the relevant technical field should understand that any improvement to the present application, the equivalent replacement of the raw materials of the product of the present application, the addition of auxiliary components, the selection of specific methods, etc., all fall within the scope of protection and disclosure of the present application.

[0104] The preferred embodiments of the present application are described in detail above; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0105] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

Claims

1. A method for preparing a green and low-carbon functional inorganic rock coating artistic effect paint, characterized in that: The following steps are involved: Step S1: adding 30-60 parts of aluminum oxide composite material and 1-3 parts of hexadecyltrimethylammonium bromide to 800-1000 parts of waterborne epoxy resin emulsion by weight, stirring and reacting at 75-90° C. for 8-12 hours to obtain a modified waterborne epoxy resin emulsion; Step S2: adding 5 to 10 parts of modified waterborne epoxy resin emulsion, 20 to 30 parts of amino calcium carbonate, 12 to 15 parts of modified carboxymethyl cellulose and 0.5 to 0.8 parts of polyacrylate leveling agent to 40 to 50 parts of solvent, and dispersing at a speed of 700 to 800 r / min for 30 to 60 minutes to obtain a green low-carbon functional inorganic rock coating art effect paint; The preparation method of the amino calcium carbonate comprises: weighing 100-120 parts of calcium carbonate by weight, adding the calcium carbonate to 450-500 parts of anhydrous ethanol, and performing ultrasonic dispersion for 1-2 hours to obtain a calcium carbonate suspension; adding 20-25 parts of DL-alanine to the nano calcium carbonate suspension, heating the suspension to 75-80° C., stirring the suspension for 0.5-1 hour, and filtering, washing and drying the suspension to obtain the amino calcium carbonate; The preparation method of the modified carboxymethyl cellulose comprises: adding 20 to 25 parts of carboxymethyl cellulose to 400 to 500 parts of deionized water to fully dissolve, then adding 15 to 20 parts of N-hydroxysuccinimide, 10 to 15 parts of acrylic acid and 8 to 10 parts of melamine and stirring for 30 to 60 minutes, then adjusting the pH to 7.6 to 7.8, adding 25 to 30 parts of EDC·HCl solution and stirring for 1 to 3 hours, washing, and freeze-drying to obtain the modified carboxymethyl cellulose; The preparation method of the aluminum oxide composite material comprises: weighing 15 to 20 parts of titanium dioxide, 30 to 40 parts of aluminum oxide, 8 to 10 parts of methyl trioctyl ammonium chloride, 4 to 6 parts of 2-methyl-2,4-pentanediol, and 2 to 4 parts of polyethylene glycol in parts by weight, mixing them evenly and then ball milling and dispersing them for 24 to 30 hours to obtain a mixed slurry; treating the mixed slurry at 800 to 820° C. for 10 to 12 hours under a nitrogen atmosphere, and crushing and grinding the mixed slurry after cooling it to room temperature to obtain the aluminum oxide composite material.

2. The method for preparing the green and low-carbon functional inorganic rock coating artistic effect paint according to claim 1, characterized in that: The epoxy equivalent of the waterborne epoxy resin emulsion is 200-500 g / eq, and the solid content is 60-65%.

3. The method for preparing the green and low-carbon functional inorganic rock coating artistic effect paint according to claim 1, characterized in that: The particle size of the calcium carbonate is 100-500 nm.

4. The method for preparing the green and low-carbon functional inorganic rock coating artistic effect paint according to claim 1, characterized in that: The viscosity of the carboxymethyl cellulose is 200-500 mPa·s.

5. The method for preparing the green and low-carbon functional inorganic rock coating artistic effect paint according to claim 1, characterized in that: The polyacrylate leveling agent has a density of 0.98-1.04 g / ml and a non-volatile content of 48-53 wt %.

6. The method for preparing the green and low-carbon functional inorganic rock coating artistic effect paint according to claim 1, characterized in that: The solvent is selected from any one of ethyl acetate, propyl acetate, and butyl acetate, or a combination of at least two of them.

7. A green and low-carbon functional inorganic rock coating artistic effect paint, characterized in that: Prepared according to the method according to any one of claims 1 to 6.

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