High weather resistant acrylic paint and its preparation method

Abstract

The application belongs to the technical field of paint, and particularly relates to a high-weather-resistance acrylic paint and a preparation method thereof. The high-weather-resistance acrylic paint comprises the following components and weight fractions: 25-40 parts of water-based acrylic resin, 10-20 parts of functional resin, 10-25 parts of modified filler of shea butter oil, 0.1-0.5 parts of defoaming agent, and 20-40 parts of water; the functional resin is water-based polyurethane modified alkyd resin; and the filler at least comprises pyrophyllite powder and nano titanium dioxide. The acrylic paint provided by the application has excellent weather resistance, adhesion, wear resistance and good thermal stability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coatings, and particularly relates to a high-weather-resistance acrylic paint spray coating and a preparation method thereof. BACKGROUND

[0002] Acrylic self-paint (hand-paint) is composed of content and propellant, has the advantages of convenient construction and storage, and is widely used in the surface spraying decoration and repair of outdoor facilities, metal, iron art, factory equipment, furniture, electrical appliances, outdoor advertising, handicrafts and the like. However, the traditional acrylic self-paint is mostly solvent-based self-paint, which has the problem of environmental pollution, so water-based acrylic self-paint has been widely studied.

[0003] The water-based acrylic self-paint has more hydrophilic groups in the molecular chain of the water-based acrylic resin, resulting in poorer wear resistance and weather resistance than the solvent-based acrylic self-paint. The Chinese patent with the publication number CN116554750B discloses a water-based self-paint and a preparation method thereof. The raw materials of the water-based self-paint include, by weight, 30-40 parts of acrylic emulsion, 2-10 parts of pigment, 0.1-0.2 parts of wet dispersing agent, 3-5 parts of silica slurry, 1-2 parts of phenyltrimethoxysilane, and 20-30 parts of water. The water-based self-paint prepared by the technical solution can meet the requirements of rapid color matching for metal substrates and exterior wall coating, the paint film does not change significantly after multiple baking cycles, and the viscosity does not increase significantly after freeze-thaw cycles, and the self-paint has good stability. However, the prior art does not focus on the weather resistance of the acrylic self-paint. The Chinese patent with the publication number CN112574628B discloses a water-based self-paint, which includes the following components by weight: silicone-modified water-based acrylic resin: 18-45 parts; coloring pigment: 2-15 parts; anti-rust pigment: 5-20 parts; water-based additive: 0.8-3.5 parts; cosolvent: 10-35 parts; water: 15-40 parts; propellant: 80-120 parts. The paint film of the water-based self-paint is rapidly surface-dried and dry, and has excellent water resistance and salt spray resistance, but the weather resistance of the technical solution can only reach 800h, and the weather resistance needs to be improved. Therefore, it is of great significance to provide a high-weather-resistance acrylic paint spray coating. SUMMARY

[0004] The present application aims to solve one or more technical problems in the prior art described above, and at least provide a beneficial option. Specifically, the present application provides a high-weather-resistance acrylic paint spray coating, which has good weather resistance, wear resistance and thermal stability.

[0005] The present application provides a high-weather-resistant acrylic spray paint coating, which uses a self-crosslinking water-based acrylic resin that can be self-dried as a main film-forming resin, and a functional resin water-based polyurethane modified alkyd resin with a minimum film-forming temperature of <5℃, to achieve a balance between the rigidity and flexibility of the coating film, so that the coating film has excellent weather resistance and wear resistance, and the addition of the functional resin also unexpectedly improves the thermal stability of the acrylic spray paint coating; the filler is modified by shea butter, which is a natural plant lipid containing natural ultraviolet resistance and surface activity, and has good lubricity, and the long-chain fatty acid structure and wetting property of the shea butter are used to improve the stability of the filler in the resin system, so that the acrylic spray paint coating has good thermal stability, and the weather resistance and wear resistance are improved; a specific leaf talc powder is added to the filler, which is a layered silicate mineral, and cooperates with nano-sized titanium dioxide to make the acrylic spray paint coating have excellent weather resistance and wear resistance.

[0006] Based on the above inventive concept, in one aspect, the present application provides a high-weather-resistant acrylic spray paint coating, comprising the following components and weight fractions: water-based acrylic resin 25-40 parts, functional resin 10-20 parts, shea butter modified filler 10-25 parts, defoamer 0.1-0.5 parts, water 20-40 parts.

[0007] The functional resin is a water-based polyurethane modified alkyd resin.

[0008] The filler at least includes leaf talc powder and nano-sized titanium dioxide.

[0009] Preferably, the high-weather-resistant acrylic spray paint coating comprises the following components and weight fractions: water-based acrylic resin 30-35 parts, functional resin 13-18 parts, shea butter modified filler 15-20 parts, defoamer 0.2-0.5 parts, water 25-35 parts.

[0010] Further preferably, the high-weather-resistant acrylic spray paint coating comprises the following components and weight fractions: water-based acrylic resin 32 parts, functional resin 16 parts, shea butter modified filler 18 parts, defoamer 0.4 parts, water 30 parts.

[0011] Preferably, the water-based acrylic resin is a mixture of or and .

[0012] Preferably, the mass ratio of and is 10-20:1-3.

[0013] Further preferably, the mass ratio of the and is 15:2.

[0014] Preferably, the minimum film formation temperature of the waterborne polyurethane-modified alkyd resin is <5℃.

[0015] Further preferably, the waterborne polyurethane-modified alkyd resin is SP-8030 from Covestro.

[0016] Preferably, the filler further comprises at least one of calcium carbonate, kaolin and talcum powder.

[0017] Preferably, the smoky quartz powder accounts for 3-8% of the total weight of the filler, which can be any one value or a range value composed of any two point values among 3%, 4%, 5%, 6%, 7%, 8%, and is preferably 6%.

[0018] Preferably, the particle size of the smoky quartz powder is 1-3mm.

[0019] Preferably, the nano-sized titanium dioxide accounts for 30-50% of the total weight of the filler, which can be any one value or a range value composed of any two point values among 30%, 33%, 36%, 40%, 45%, 50%, and is preferably 36%.

[0020] Preferably, the nano-sized titanium dioxide is a rutile-type nano-sized titanium dioxide with a particle size of 50-200nm.

[0021] Further preferably, the filler is a mixture of smoky quartz powder, nano-sized titanium dioxide and calcium carbonate.

[0022] Further preferably, the mass ratio of the smoky quartz powder, nano-sized titanium dioxide and calcium carbonate is 3-8:30-50:42-67.

[0023] More preferably, the mass ratio of the smoky quartz powder, nano-sized titanium dioxide and calcium carbonate is 6:36:58.

[0024] Preferably, the mass ratio of the shea butter and the filler is 5-10:100, which can be any one value or a range value composed of any two point values among 5:100, 6:100, 7:100, 8:100, 9:100, 10:100, and is preferably 8:100.

[0025] Preferably, the shea butter-modified filler is obtained by mixing and grinding the filler and the shea butter.

[0026] Preferably, the rotation speed of the grinder is 300-500 rpm, which can be any one value or a range value composed of any two point values among 300 rpm, 350 rpm, 400 rpm, 450 rpm and 500 rpm, and preferably is 450 rpm.

[0027] Preferably, the grinding time is 1-3 h, which can be any one value or a range value composed of any two point values among 1 h, 1.5 h, 2 h, 2.5 h and 3 h, and preferably is 2 h.

[0028] Preferably, the defoaming agent is at least one selected from the group consisting of DOW tegos 825, DOW tegos Airex 902W and DOW tegos Airex 901W, and preferably is DOW tegos Airex 901W.

[0029] In another aspect, the present application provides a preparation method of the high-weatherability acrylic paint, comprising the following steps: uniformly stirring the water-based acrylic resin, the functional resin and water, adding the defoaming agent, uniformly stirring, and finally adding the shea butter modified filler and uniformly stirring to obtain the high-weatherability acrylic paint.

[0030] In still another aspect, the present application provides a high-weatherability acrylic self-paint, comprising the high-weatherability acrylic paint and the propellant.

[0031] Preferably, the propellant is at least one selected from the group consisting of dimethyl ether, propane and butane.

[0032] Compared with the prior art, the present application has the following beneficial effects:

[0033] The high-weatherability acrylic paint provided by the present application has good atomization effect when prepared into an acrylic self-paint, can spray out uniform paint mist when spraying immediately and when spraying after being placed at 50℃ for 1 month, and has excellent weatherability (the gloss loss grade and the discoloration grade can both reach 0 level after aging for 1200 h), excellent adhesion (0 level) and excellent wear resistance (> 250 turns). BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The spray photo of the acrylic self-paint prepared by the application example 1 when spraying immediately;

[0035] Figure 2 The spray photo of the acrylic self-paint prepared by the application example 1 when spraying after being placed at 50℃ for 1 month;

[0036] Figure 3 The spray photo of the acrylic self-paint prepared by the comparative application example 1 when spraying immediately;

[0037] Figure 4 The spray photo of the acrylic self-spray paint prepared in the application example 1 of the application after being placed at 50℃ for 1 month and then sprayed for test;

[0038] Figure 5 The spray photo of the acrylic self-spray paint prepared in the application example 1 of the application after being placed at 50℃ for 1 month and then sprayed for test;

[0039] Figure 6 The spray photo of the acrylic self-spray paint prepared in the application example 1 of the application after being placed at 50℃ for 1 month and then sprayed for test;

[0040] Figure 7 The spray photo of the acrylic self-spray paint prepared in the application example 1 of the application after being placed at 50℃ for 1 month and then sprayed for test. DETAILED DESCRIPTION

[0041] In order to make the skilled in the art more clearly understand the technical solutions described in the application, the following examples are listed for illustration. It should be pointed out that the following examples do not constitute a limitation on the scope of protection required by the application.

[0042] The raw materials, reagents or devices used in the following examples and comparative examples can be obtained from conventional commercial channels, or can be obtained by existing known methods, unless otherwise specified.

[0043] Example 1

[0044] The present embodiment provides a high-weather-resistant acrylic spray paint and a preparation method thereof:

[0045] The high-weather-resistant acrylic spray paint consists of the following components and weight fractions:

[0046] 32 parts of water-based acrylic resin,

[0047] 16 parts of functional resin,

[0048] 18 parts of shea butter oil modified filler,

[0049] 0.4 parts of defoamer,

[0050] 30 parts of water.

[0051] The water-based acrylic resin is a mixture of and The mass ratio of the and is 15:2.

[0052] The functional resin is a water-based polyurethane modified alkyd resin, which is SP-8030, minimum film forming temperature <5℃.

[0053] The shea butter oil modified filler is obtained by mixing and grinding the filler and shea butter oil at a rotation speed of 450 rpm for 2 h.

[0054] The shea butter oil is purchased from Wuhan Huaxiang Kejie Biotechnology Co., Ltd.

[0055] The filler is a mixture of leaf talsk powder, nano titanium dioxide and calcium carbonate.

[0056] The mass ratio of the leaf talsk powder, nano titanium dioxide and calcium carbonate is 6:36:58.

[0057] The particle size of the leaf talsk powder is 1-3 mm, and it is purchased from Hebei Yayang Lithium Spodumene Co., Ltd.

[0058] The nano titanium dioxide is a rutile type nano titanium dioxide with a particle size of 50-200 nm, and it is purchased from Henan Longxing Titanium Industry Technology Co., Ltd., product model: LX-TR50.

[0059] The calcium carbonate is purchased from Shanghai Yuanjiang Chemical Co., Ltd., and the mesh number is 3000 mesh.

[0060] The defoaming agent is DiGo Tego Airex 901W.

[0061] The preparation method of the high weather-resistant acrylic paint coating is as follows: uniformly stir the water-based acrylic resin, functional resin and water, add the defoaming agent, uniformly stir, and finally add the shea butter oil modified filler and uniformly stir to obtain.

[0062] Example 2

[0063] The embodiment provides a high weather-resistant acrylic paint coating and a preparation method thereof:

[0064] The high weather-resistant acrylic paint coating is composed of the following components and weight fractions:

[0065] 32 parts of water-based acrylic resin,

[0066] 16 parts of functional resin,

[0067] 18 parts of shea butter oil modified filler,

[0068] 0.4 parts of defoaming agent,

[0069] 30 parts of water.

[0070] The water-based acrylic resin is "Jintuan" of Zhuhai Jintuan Chemical Co., Ltd.

[0071] The functional resin is a water-based polyurethane modified alkyd resin, which is SP-8030, minimum film forming temperature <5℃.

[0072] The shea oil modified filler is obtained by mixing and grinding the filler and shea oil at a rotation speed of 450 rpm for 2 h.

[0073] The filler is a mixture of pyrophyllite powder, nano-sized titanium dioxide and calcium carbonate.

[0074] The mass ratio of the pyrophyllite powder, nano-sized titanium dioxide and calcium carbonate is 6:36:58.

[0075] The particle size of the pyrophyllite powder is 1-3 mm, which is purchased from Hebei Yayang Lithium Co., Ltd.

[0076] The nano-sized titanium dioxide is a rutile type nano-sized titanium dioxide with a particle size of 50-200 nm, which is purchased from Henan Longxing Titanium Industry Technology Co., Ltd., product model: LX-TR50.

[0077] The calcium carbonate is purchased from Shanghai Yinjiang Chemical Co., Ltd., mesh number is 3000 mesh.

[0078] The defoaming agent is DiGo Tego Airex 901W.

[0079] The preparation method of the high-weather-resistant acrylic spray paint coating is: uniformly stirring the water-based acrylic resin, functional resin and water, adding the defoaming agent, uniformly stirring, and finally adding the shea oil modified filler and uniformly stirring.

[0080] Example 3

[0081] The present embodiment provides a high-weather-resistant acrylic spray paint coating and a preparation method thereof:

[0082] The high-weather-resistant acrylic spray paint coating is composed of the following components and weight fractions:

[0083] Water-based acrylic resin 36 parts,

[0084] Functional resin 12 parts,

[0085] Shea oil modified filler 15 parts,

[0086] Defoaming agent 0.3 parts,

[0087] Water 25 parts.

[0088] The water-based acrylic resin is a mixture of and The water-based acrylic resin is a mixture of and The mass ratio of the leaf wax stone powder, the nano titanium dioxide and the calcium carbonate is 6:36:58.

[0089] The functional resin is a water-based polyurethane modified alkyd resin, which is SP-8030, the minimum film forming temperature is <5℃.

[0090] The shea oil modified filler is obtained by mixing and grinding the filler and the shea oil under the condition of 450 rpm for 2h.

[0091] The filler is a mixture of leaf wax stone powder, nano titanium dioxide and calcium carbonate.

[0092] The mass ratio of the leaf wax stone powder, the nano titanium dioxide and the calcium carbonate is 6:36:58.

[0093] The particle size of the leaf wax stone powder is 1-3mm, which is purchased from Hebei Yayang Lithium Co., Ltd.

[0094] The nano titanium dioxide is a rutile type nano titanium dioxide with a particle size of 50-200nm, which is purchased from Henan Longxing Titanium Industry Technology Co., Ltd., product model: LX-TR50.

[0095] The calcium carbonate is purchased from Shanghai Yinjiang Chemical Co., Ltd., mesh number is 3000 mesh.

[0096] The defoaming agent is DiGo Tego Airex 901W.

[0097] The preparation method of the high-weather-resistant acrylic paint is as follows: the water-based acrylic resin, the functional resin and water are stirred uniformly, the defoaming agent is added, stirred uniformly, and finally the shea oil modified filler is added and stirred uniformly.

[0098] Comparative Example 1

[0099] The difference between Comparative Example 1 and Example 1 is only that the same amount of water-based acrylic resin is used to replace the functional resin, i.e. the water-based acrylic resin is 48 parts, the functional resin is 0 part, and the others are the same as Example 1.

[0100] Comparative Example 2

[0101] The difference between Comparative Example 2 and Example 1 is only that the same amount of water-based silicone modified acrylic resin is used to replace the water-based acrylic resin and the functional resin, i.e. the water-based silicone modified acrylic resin is 48 parts, the water-based acrylic resin is 0 part, and the functional resin is 0 part, the water-based silicone modified acrylic resin is WH-103C of Guangzhou Wanhua New Material Technology Co., Ltd., solid content is 45±2%, and the others are the same as Example 1.

[0102] Comparative Example 3

[0103] The difference between Comparative Example 3 and Example 1 is that Comparative Example 3 uses equal amount of nano-sized titanium dioxide to replace the smoky quartz powder, i.e. the mass ratio of nano-sized titanium dioxide and calcium carbonate is 42:58, and the other components are the same as those in Example 1.

[0104] Comparative Example 4

[0105] The difference between Comparative Example 4 and Example 1 is that Comparative Example 4 uses equal amount of talc powder to replace the smoky quartz powder, i.e. the mass ratio of talc powder, nano-sized titanium dioxide and calcium carbonate is 6:36:58, and the other components are the same as those in Example 1.

[0106] Comparative Example 5

[0107] The difference between Comparative Example 5 and Example 1 is that Comparative Example 5 uses equal amount of filler to replace the shea butter oil modified filler, and 0.3 parts of non-ionic surfactant, i.e. DOWFAX X-405 from Dow Corning, is added, i.e. the high weather-resistant acrylic self-spray paint is composed of 36 parts of water-based acrylic resin, 12 parts of functional resin, 15 parts of filler, 0.3 parts of defoaming agent, 0.3 parts of surfactant, 25 parts of water, and the other components are the same as those in Example 1.

[0108] Application Example 1

[0109] The application example provides a preparation method of a high weather-resistant acrylic self-spray paint: 20 parts by weight of the high weather-resistant acrylic self-spray paint in Example 1 is loaded into a spray pressure tank and filled with 10 parts by weight of butane.

[0110] Application Example 2

[0111] The application example provides a preparation method of a high weather-resistant acrylic self-spray paint: 20 parts by weight of the high weather-resistant acrylic self-spray paint in Example 2 is loaded into a spray pressure tank and filled with 10 parts by weight of butane.

[0112] Application Example 3

[0113] The application example provides a preparation method of a high weather-resistant acrylic self-spray paint: 20 parts by weight of the high weather-resistant acrylic self-spray paint in Example 3 is loaded into a spray pressure tank and filled with 10 parts by weight of butane.

[0114] Comparative Application Example 1

[0115] The application example provides a preparation method of a high weather-resistant acrylic self-spray paint: 20 parts by weight of the high weather-resistant acrylic self-spray paint in Comparative Example 1 is loaded into a spray pressure tank and filled with 10 parts by weight of butane.

[0116] Comparative Application Example 2

[0117] The application example provides a preparation method of a high-weatherability acrylic self-spraying paint: 20 parts by weight of the high-weatherability acrylic spraying paint coating of Comparative Example 2 is loaded into a spraying pressure tank and filled with 10 parts by weight of butane to obtain the high-weatherability acrylic self-spraying paint.

[0118] Comparative Application Example 3

[0119] The application example provides a preparation method of a high-weatherability acrylic self-spraying paint: 20 parts by weight of the high-weatherability acrylic spraying paint coating of Comparative Example 3 is loaded into a spraying pressure tank and filled with 10 parts by weight of butane to obtain the high-weatherability acrylic self-spraying paint.

[0120] Comparative Application Example 4

[0121] The application example provides a preparation method of a high-weatherability acrylic self-spraying paint: 20 parts by weight of the high-weatherability acrylic spraying paint coating of Comparative Example 4 is loaded into a spraying pressure tank and filled with 10 parts by weight of butane to obtain the high-weatherability acrylic self-spraying paint.

[0122] Comparative Application Example 5

[0123] The application example provides a preparation method of a high-weatherability acrylic self-spraying paint: 20 parts by weight of the high-weatherability acrylic spraying paint coating of Comparative Example 5 is loaded into a spraying pressure tank and filled with 10 parts by weight of butane to obtain the high-weatherability acrylic self-spraying paint.

[0124] Performance Test 1

[0125] The high-weatherability acrylic self-spraying paints of Application Examples 1-3 and Comparative Application Examples 1-5 are sprayed to perform: (1) a spray-on (25°C) test; (2) a spraying test after being placed at 50°C for 1 month; the spraying is uniform, and is recorded as qualified, otherwise, it is unqualified, and the results are shown in Table 1. Figures 1-7 and Table 1.

[0126] Performance Test 2

[0127] The high-weatherability acrylic self-spraying paints of Application Examples 1-3 and Comparative Application Examples 1-5 are sprayed on tinplate substrates, and after spraying, are placed at room temperature (25°C) for self-drying for 1 h to obtain a 20-μm coating film, and the following tests are performed:

[0128] (1) Weather resistance: the test is performed in accordance with Method 1 in GB / T 1865-2009, the aging time is 1200 h, and the loss of gloss grade and discoloration grade are evaluated in accordance with GB / T 1766-2008;

[0129] (2) Adhesion: the test is performed in accordance with GB / T 9286-2021;

[0130] (3) Abrasion resistance: tested according to GB / T 1768-2006, using CS-10 grinding wheel, recording the number of revolutions of the coating film being ground through, the results of which are shown in Table 1.

[0131] Table 1 Performance test results of the high-weatherability acrylic self-spray paint of application examples 1-3 and comparative application examples 1-5

[0132]

[0133]

[0134] By Figures 1-7 As can be seen from Table 1:

[0135] The acrylic self-spray paint prepared using the acrylic spray paint coating of examples 1-3 has good spray performance and thermal stability; the paint film has good weather resistance, adhesion and abrasion resistance, among which example 1 has better weather resistance and abrasion resistance than example 2 due to the use of and compounding, has the function of dispersing fillers, so as to further improve the abrasion resistance of the paint film.

[0136] Comparative application example 1 and application example 1, in comparative application example 1, no functional resin is added, the spray performance of the obtained acrylic self-spray paint becomes poor, that is, the spray is rough after spraying at 50℃ for 1 month, at the same time, the weather resistance and abrasion resistance of the paint film are obviously poor, and the adhesion is also reduced;

[0137] Comparative application example 2 and application example 1, in comparative application example 2, the water-based silicone-modified acrylic resin is used, the spray performance of the obtained acrylic self-spray paint becomes poor, that is, the spray is uneven, at the same time, the weather resistance and abrasion resistance of the paint film are also reduced;

[0138] Comparative application example 3, comparative application example 4 and application example 1, there is no pyrophyllite powder in the system, the weather resistance and abrasion resistance of the paint film are obviously poor, and the spray of the acrylic self-spray paint of comparative application example 4 is uneven after being placed at 50℃ for 1 month;

[0139] Comparative application example 5 and application example 1, no shea butter oil modified coating is used, a non-ionic surfactant is added, the spray performance of the obtained acrylic self-spray paint becomes poor, that is, the spray is uneven, at the same time, the weather resistance and abrasion resistance of the paint film are also reduced, and the adhesion is obviously poor.

[0140] Finally, it should be noted that the above is only to illustrate the technical solutions of the present application, and is not a limitation on the scope of protection of the present application, and simple modifications or equivalent replacements of the technical solutions of the present application by those skilled in the art do not deviate from the essence and scope of the technical solutions of the present application.

Claims

1. A high weather resistant acrylic spray paint coating, characterized by, The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 25-40 parts, functional resin 10-20 parts, shea oil modified filler 10-25 parts, defoaming agent 0.1-0.5 parts, water 20-40 parts. The functional resin is a water-based polyurethane modified alkyd resin. HOMAAC ® -5805; or HOMAAC ® -5805 and HOMAAC ® a mixture of HOMAAC and -5809 The aqueous polyurethane-modified alkyd resin is Decovery ® SP-8030; The shea oil modified filler is obtained by mixing and grinding the filler and shea oil. The filler is a mixture of pyrophyllite powder, nano titanium dioxide and calcium carbonate.

2. The high weatherable acrylic spray paint coating according to claim 1, characterized in that, The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 30-35 parts, functional resin 13-18 parts, shea oil modified filler 15-20 parts, defoaming agent 0.2-0.5 parts, water 25-35 parts.

3. The high weatherable acrylic spray paint coating according to claim 2, characterized in that, The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 32 parts, functional resin 16 parts, shea oil modified filler 18 parts, defoaming agent 0.4 parts, water 30 parts.

4. The high weatherable acrylic paint coating according to claim 1, characterized in that, The mass ratio of the pyrophyllite powder, nano titanium dioxide and calcium carbonate is 3-8:30-50:42-67.

5. The high weatherable acrylic paint coating according to claim 1, characterized in that, The mass ratio of the shea oil and filler is 5-10:

100.

6. The process for preparing a high weatherable acrylic spray paint coating as claimed in any one of claims 1 to 5, characterized in that, The method comprises the following steps: The water-based acrylic resin, functional resin and water are stirred uniformly, the defoaming agent is added and stirred uniformly, and finally the shea oil modified filler is added and stirred uniformly to obtain the high weatherability acrylic paint.

7. A high weather resistant acrylic self-primer paint, characterized by, The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 25-40 parts, functional resin 10-20 parts, shea oil modified filler 10-25 parts, defoaming agent 0.1-0.5 parts, water 20-40 parts. The functional resin is a water-based polyurethane modified alkyd resin. The shea oil modified filler is obtained by mixing and grinding the filler and shea oil. The filler is a mixture of pyrophyllite powder, nano titanium dioxide and calcium carbonate. The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 30-35 parts, functional resin 13-18 parts, shea oil modified filler 15-20 parts, defoaming agent 0.2-0.5 parts, water 25-35 parts. The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 32 parts, functional resin 16 parts, shea oil modified filler 18 parts, defoaming agent 0.4 parts, water 30 parts. The mass ratio of the pyrophyllite powder, nano titanium dioxide and calcium carbonate is 3-8:30-50:42-67. The mass ratio of the shea oil and filler is 5-10:

100. The method comprises the following steps: The water-based acrylic resin, functional resin and water are stirred uniformly, the defoaming agent is added and stirred uniformly, and finally the shea oil modified filler is added and stirred uniformly to obtain the high weatherability acrylic paint. The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 25-40 parts, functional resin 10-20 parts, shea oil modified filler 10-25 parts, defoaming agent 0.1-0.5 parts, water 20-40 parts. The functional resin is a water-based polyurethane modified alkyd resin. The shea oil modified filler is obtained by mixing and grinding the filler and shea oil. The filler is a mixture of pyrophyllite powder, nano titanium dioxide and calcium carbonate. The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 30-35 parts, functional resin 13-18 parts, shea oil modified filler 15-20 parts, defoaming agent 0.2-0.5 parts, water 25-35 parts. The high weatherability acrylic paint comprises the following components and weight fractions: water-based acrylic resin 32 parts, functional resin 16 parts, shea oil modified filler

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