A method for preparing waterproof hand-painted textile pigment

Abstract

The invention discloses a method for preparing a waterproof hand-painted textile pigment. The waterproof hand-painted textile pigment comprises the following components in parts by weight: 60-70 parts of pure acrylic emulsion, 5-15 parts of pigment toner, 0.5-1.5 parts of thickener, 2-5 parts of ultraviolet absorber, 2-5 parts of antioxidant, 3-6 parts of cross-linking agent, 1-3 parts of leveling agent, 1-3 parts of waterproofing agent, 1-3 parts of film-forming aid, 60-70 parts of deionized water, 1-2 parts of mildewproof agent BCM, 1.5-2.5 parts of 202 defoamer, 2-3 parts of organosilicon quaternary ammonium salt, and 5-7 parts of softener. The problem of poor waterproofness and adhesion of traditional hand-painted pigments is solved, and the process of high-temperature baking required for coloring of traditional textile pigments is not required. It can be colored by drying naturally, and the softness of the fabric is not affected after drying. It has the characteristics of being washable, non-cracking, anti-friction and anti-sun. It is a new type of pigment that can be applied to carriers such as wall surfaces, clothes, shoes and hats, flower pots and gypsum.

Description

Technical Field

[0001] The invention relates to a preparation method of a waterproof hand-painted textile pigment and belongs to the field of hand-painted pigments. Background Art

[0002] Traditional textile pigments are specially used for screen printing on fiber fabrics. There are some disadvantages in using them for painting on hand-painted clothing: special blending agents are required to blend the pigments, and irons are used to heat and bake at high temperatures. Generally speaking, they need to be baked at 150°C for about 5 minutes, and can only be washed after 24 hours, making the creation process extremely demanding and cumbersome. Usually, special blending agents are used to blend the pigments, and irons are used to heat and bake at high temperatures. Before using the iron, place a piece of white cotton cloth on the colored textile pigments to avoid discoloration of the fabric during ironing. Textile pigments have relatively low adhesion and are very easy to fade if not handled properly. The process for hand-painting is cumbersome and relatively time-consuming and laborious.

[0003] Acrylic paint is also a commonly used paint for hand-painting. It has the characteristics of quick drying, bright patterns and strong adhesion. However, acrylic paint also requires a special blending agent before it can be used as a hand-painted paint for carriers such as clothes and shoes. Moreover, patterns painted with acrylic paint are prone to cracking, and large-area patterns will make the clothes hard and lose their softness, so it is generally only used for the creation of small patterns.

[0004] CN103225216B discloses a method for preparing an environmentally friendly textile pigment. The solvent used in the method is a styrene acrylic emulsion, which has poorer elasticity and weather resistance than pure acrylic emulsion.

[0005] The existing hand-painted pigments on the market are not very resistant to water washing. They will fade and blur the patterns when washed with detergents. Therefore, preparing a waterproof textile pigment that can be hand-painted is a problem that needs to be solved at present. Summary of the invention

[0006] The purpose of the present invention is to provide a method for preparing a waterproof hand-painted textile pigment. The hand-painted textile pigment can be colored by naturally drying, does not affect the softness of the fabric after drying, and has the characteristics of being resistant to water washing, cracking, friction and sunlight.

[0007] The present invention is achieved through the following technical solutions:

[0008] A waterproof hand-painted textile pigment comprises the following components in parts by weight: 60-70 parts of pure acrylic emulsion, 5-15 parts of pigment toner, 0.5-1.5 parts of thickener, 2-5 parts of ultraviolet absorber, 2-5 parts of antioxidant, 3-6 parts of cross-linking agent, 1-3 parts of leveling agent, 1-3 parts of waterproofing agent, 1-3 parts of film-forming aid, 60-70 parts of deionized water, 1-2 parts of mildewproofing agent BCM, 1.5-2.5 parts of 202 defoaming agent, 2-3 parts of organosilicon quaternary ammonium salt and 5-7 parts of softener.

[0009] A method for preparing a waterproof hand-painted textile pigment is:

[0010] 1) Mix pure acrylic emulsion and deionized water in a ratio of 1:1, set the speed at 180-200 r / min in a stirring tank and stir for 30 min to obtain a first mixture;

[0011] 2) Heat the stirring tank to 40-50°C, continue to add pigment powder, cross-linking agent, 202 defoamer, waterproofing agent, mildewproofing agent BCM to the first mixture by weight, set the speed to 500-800r / min and stir for 1-2h to obtain the second mixture;

[0012] 3) Cool the stirring tank to 20-25°C, continue to add thickener, UV absorber and antioxidant to the second mixture, set the speed to 350-450r / min and stir for 30min, then let it stand for 3-5h to obtain the third mixture;

[0013] 4) Continue to add film-forming aid, leveling agent, organosilicon quaternary ammonium salt and softener to the third mixture, set the stirring speed to 180-200r / min and stir for 30min to obtain a mixed color paste;

[0014] 5) Place the mixed color paste in a three-roll grinder, set the gap to 0.3 mm, and grind until the fineness of the mixed color paste is below 50 μm to obtain a waterproof hand-painted textile pigment.

[0015] Preferably, the pretreatment method of the pigment toner is as follows:

[0016] Place the pigment powder in a ball mill, select 0.3mm zirconium oxide medium balls, and the ratio of pigment to medium balls loaded into the ball mill is 1:1.5, and it needs to be loaded to 2 / 3 of the ball mill. After loading, close the feed port, pass nitrogen for 15 minutes, set the ball mill speed to 500-800r / min, forward for 30 minutes, reverse for 30 minutes, and then alternate forward and reverse to grind to 1000 mesh to collect the pigment powder.

[0017] Preferably, the thickener is an acrylic thickener.

[0018] Preferably, the film-forming aid is a 1:1 mixture of ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether.

[0019] Preferably, the crosslinking agent is trimethylolpropane trimethacrylate.

[0020] Preferably, the leveling agent is a fluorine-modified acrylate leveling agent.

[0021] Preferably, the waterproofing agent is a 1:1 mixture of dihydroxy polydimethylsiloxane and perfluorohexylethyl acrylate.

[0022] Preferably, the ultraviolet absorber is methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate.

[0023] Preferably, the antioxidant is 2-(2-hydroxy-5-methylphenyl)benzotriazole.

[0024] Preferably, the softener is a 1:1 mixture of methyl hydrogen silicone oil and dimethyl hydroxy silicone oil.

[0025] Preferably, the organosilicon quaternary ammonium salt is dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride.

[0026] The characteristics of the present invention are:

[0027] 1) The excellent water resistance of pure acrylic emulsion allows a waterproof layer to be formed on the surface of the painting, which can withstand long-term immersion in water without falling off; using water as the solvent, there is no need to heat when drying, and it can be dried naturally.

[0028] 2) The compound leveling agent of cellulose acetate butyrate and fluorine-modified acrylic leveling agent can promote the coating to form a flat, smooth and uniform coating film during the drying and film-forming process. It is a kind of substance that can effectively reduce the surface tension of the coating liquid and improve its leveling and uniformity. It can improve the permeability of the coating liquid, reduce the possibility of spots and marks when brushing, increase coverage, and make the film formation uniform and natural. It can significantly reduce the surface tension of the liquid, has excellent interfacial wetting properties, and the generated foam can disappear quickly and automatically. It improves the leveling of solvent-based coatings, the dispersion and wettability of pigments, and solves the problems of fisheye pinholes in the coating; paint missing at the corners, orange peel, pigment stratification, floating, etc. after coating and drying.

[0029] 3) The composite film-forming aid of the present invention has excellent agglomeration performance and can greatly improve the viscosity of the coating. Among them, dipropylene glycol monopropyl ether can also improve the defoaming property of water-based coatings, has high film-forming efficiency and medium-slow volatilization speed, and has both hydrophilicity and hydrophobicity.

[0030] 4) Perfluorohexyl ethyl acrylate has good compatibility with pure acrylic emulsion. A small amount of addition can significantly improve the waterproof and wear resistance of the pigment and increase the surface smoothness. Dihydroxy polydimethylsiloxane has excellent properties such as aging resistance, corrosion resistance, water and moisture resistance, non-toxicity, insulation, shock resistance, excellent simulation, demoulding and extremely low shrinkage. When compounded with perfluorohexyl ethyl acrylate, after the pigment is completely dried, a tightly wrapped waterproof structure is formed on the outside of the pigment particles, and the structure has a high expansion rate and is resistant to rubbing, meeting the needs of daily hand washing and machine washing without damaging the coating.

[0031] 5) 2-(2-hydroxy-5-methylphenyl)benzotriazole is a highly efficient ultraviolet absorber, which is colorless, absorbs almost no visible light, and is allowed to be used in plastic products that come into contact with food, so it is highly safe. 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid methyl ester is white, non-toxic, has good antioxidant properties, and prevents pigment discoloration. When used in combination with 2-(2-hydroxy-5-methylphenyl)benzotriazole, its ultraviolet absorption effect can be enhanced. A waterproof hand-painted textile pigment prepared by the present invention is compounded with specific ultraviolet absorbers and antioxidants, so that the weather resistance of the hand-painted works is improved, and these two additives, one colorless and the other white, improve the performance of the pigment without affecting the hue of the pigment.

[0032] 6) In addition to its excellent antibacterial and antimicrobial properties, organosilicon quaternary ammonium salts can also be used for hydrophilic finishing of fabrics and give fabrics good softness, resilience, smoothness and obvious antistatic effects. Organosilicon quaternary ammonium salts used together with dimethyl hydroxy silicone oil can enhance the penetration of pigments, give pigments good adhesion, and make the pigment film thinner, softer and more resilient. The biggest advantage of methyl hydrogen silicone oil is its good waterproof effect. It can cross-link and form a film at low temperature under the action of metal salt catalysts, and can form a waterproof film on the surface of various substances, especially in the waterproofing of fabrics. Together with methyl hydroxy silicone oil emulsion, it can not only waterproof but also maintain the original air permeability and softness of the fabric, and can improve the tear strength, friction strength and anti-fouling properties of the fabric.

[0033] 7) The present invention introduces a method for preparing a waterproof hand-painted textile pigment, which solves the problems of poor water resistance and adhesion of traditional hand-painted pigments. The pigment can be colored by natural drying without the need for high-temperature baking required for coloring traditional textile pigments. After drying, the softness of the fabric is not affected. The pigment has the characteristics of water resistance, no cracking, friction resistance and sun resistance. It is a new type of pigment that can be applied to carriers such as walls, clothes, shoes and hats, flower pots and plaster. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the embodiments.

[0035] Unless otherwise specified, the raw materials or chemical reagents used in the embodiments of the present invention are obtained through conventional commercial channels.

[0036] Example 1

[0037] A preparation method of a red waterproof hand-painted textile pigment is:

[0038] 1) Place Pigment Red 254 in a ball mill, select 0.3mm zirconium oxide medium balls, and load the pigment to the medium balls in a ratio of 1:1.5, and load 2 / 3 of the ball mill. After loading, close the feed port, pass nitrogen for 15 minutes, set the ball mill speed to 600r / min, rotate forward for 30 minutes, and reverse for 30 minutes. Alternate forward and reverse ball milling until 1000 mesh, collect Pigment Red 254;

[0039] 2) Add 65 parts of pure acrylic emulsion and 65 parts of deionized water into a stirring tank, set the speed to 190 r / min and stir for 30 minutes to obtain a first mixture;

[0040] 3) Heat the stirring tank to 45°C, continue to add 10 parts of Pigment Red No. 254, 5 parts of trimethylolpropane trimethacrylate, 2 parts of 202 defoamer, 2 parts of a waterproofing agent prepared by mixing dihydroxy polydimethylsiloxane and perfluorohexylethyl acrylate in a ratio of 1:1, and 1.5 parts of mildewcide BCM to the first mixture, set the speed to 600 r / min and stir for 1.5 hours to obtain a second mixture;

[0041] 4) The stirring tank was cooled to 25°C, and 1 part of acrylic thickener DR72, 3.5 parts of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and 3.5 parts of 2-(2-hydroxy-5-methylphenyl)benzotriazole were added to the second mixture, and the speed was set to 400 r / min and stirred for 30 minutes, and then allowed to stand for 4 hours to obtain a third mixture;

[0042] 5) Continue to add 2 parts of a film-forming aid prepared by mixing 1:1 ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether and 2 parts of S430 fluorine-modified acrylate leveling agent to the third mixture, set the stirring speed to 190 r / min and stir for 30 minutes to obtain a mixed color paste;

[0043] 6) Place the mixed color paste in a three-roll grinder, set the gap to 0.3 mm, and grind until the fineness of the mixed color paste is below 50 μm to obtain a red waterproof hand-painted textile pigment.

[0044] Example 2

[0045] A preparation method of a blue waterproof hand-painted textile pigment is:

[0046] 2) Place Phthalocyanine Blue BGS in a ball mill, select 0.3mm zirconium oxide medium balls, and load the pigment to the medium balls in a ratio of 1:1.5, and fill 2 / 3 of the ball mill. After loading, close the feed port, pass nitrogen for 15 minutes, set the ball mill speed to 600r / min, rotate forward for 30 minutes, reverse for 30 minutes, and alternately mill forward and reverse to 1000 mesh to collect Phthalocyanine Blue BGS;

[0047] 3) Add 60 parts of pure acrylic emulsion and 60 parts of deionized water into a stirring tank, set the speed to 190 r / min and stir for 30 minutes to obtain a first mixture;

[0048] 4) Heat the stirring tank to 45°C, continue to add 5 parts of phthalocyanine blue BGS, 6 parts of trimethylolpropane trimethacrylate, 2.5 parts of 202 defoamer, 3 parts of a waterproofing agent prepared by mixing dihydroxy polydimethylsiloxane and perfluorohexylethyl acrylate in a ratio of 1:1, and 1 part of mildewcide BCM to the first mixture, set the speed to 600 r / min and stir for 1.5 hours to obtain a second mixture;

[0049] 5) The stirring tank was cooled to 25°C, and 1 part of acrylic thickener DR72, 2 parts of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and 2 parts of 2-(2-hydroxy-5-methylphenyl)benzotriazole were added to the second mixture, and the speed was set to 400 r / min and stirred for 30 minutes, and then allowed to stand for 4 hours to obtain a third mixture;

[0050] 6) Continue to add 1 part of a film-forming aid prepared by mixing 1:1 ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether and 1 part of an S430 fluorine-modified acrylate leveling agent to the third mixture, set the stirring speed to 190 r / min and stir for 30 minutes to obtain a mixed color paste;

[0051] 7) Place the mixed color paste in a three-roll grinder, set the gap to 0.3 mm, and grind until the fineness of the mixed color paste is below 50 μm to obtain a blue waterproof hand-painted textile pigment.

[0052] Example 3

[0053] A preparation method of a yellow waterproof hand-painted textile pigment is:

[0054] 2) Place Pigment Yellow No. 191 in a ball mill, select 0.3mm zirconium oxide medium balls, and load the pigment to the medium balls in a ratio of 1:1.5, and load 2 / 3 of the ball mill. After loading, close the feed port, pass nitrogen for 15 minutes, set the ball mill speed to 600r / min, forward for 30 minutes, reverse for 30 minutes, and alternate forward and reverse ball milling to 1000 mesh to collect Pigment Yellow No. 191;

[0055] 3) Add 70 parts of pure acrylic emulsion and 70 parts of deionized water into a stirring tank, set the speed to 190 r / min and stir for 30 minutes to obtain a first mixture;

[0056] 4) Heat the stirring tank to 45°C, continue to add 15 parts of Pigment Yellow No. 191, 3 parts of trimethylolpropane trimethacrylate, 1.5 parts of 202 defoamer, 1 part of a waterproofing agent prepared by mixing dihydroxy polydimethylsiloxane and perfluorohexylethyl acrylate in a ratio of 1:1, and 2 parts of mildewcide BCM to the first mixture, set the speed to 600 r / min and stir for 1.5 hours to obtain a second mixture;

[0057] 5) The stirring tank was cooled to 25°C, and 1.5 parts of acrylic thickener DR72, 5 parts of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and 5 parts of 2-(2-hydroxy-5-methylphenyl)benzotriazole were added to the second mixture, and the speed was set to 400 r / min and stirred for 30 minutes, and then allowed to stand for 4 hours to obtain a third mixture;

[0058] 6) Continue to add 3 parts of a film-forming aid prepared by mixing 1:1 ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether and 3 parts of S430 fluorine-modified acrylate leveling agent to the third mixture, set the stirring speed to 190 r / min and stir for 30 minutes to obtain a mixed color paste;

[0059] 7) Place the mixed color paste in a three-roll grinder, set the gap to 0.3 mm, and grind until the fineness of the mixed color paste is below 50 μm to obtain a yellow waterproof hand-painted textile pigment.

[0060] Example 4

[0061] A preparation method of a red waterproof hand-painted textile pigment is:

[0062] 1) Place Pigment Red 254 in a ball mill, select 0.3mm zirconium oxide medium balls, and load the pigment to the medium balls in a ratio of 1:1.5, and load 2 / 3 of the ball mill. After loading, close the feed port, pass nitrogen for 15 minutes, set the ball mill speed to 600r / min, rotate forward for 30 minutes, and reverse for 30 minutes. Alternate forward and reverse ball milling until 1000 mesh, collect Pigment Red 254;

[0063] 2) Add 65 parts of pure acrylic emulsion and 65 parts of deionized water into a stirring tank, set the speed to 190 r / min and stir for 30 minutes to obtain a first mixture;

[0064] 3) Heat the stirring tank to 45°C, continue to add 10 parts of Pigment Red No. 254, 5 parts of trimethylolpropane trimethacrylate, 2 parts of 202 defoamer, 2 parts of a waterproofing agent prepared by mixing dihydroxy polydimethylsiloxane and perfluorohexylethyl acrylate in a ratio of 1:1, and 1.5 parts of mildewcide BCM to the first mixture, set the speed to 600 r / min and stir for 1.5 hours to obtain a second mixture;

[0065] 4) The stirring tank was cooled to 25°C, and 1 part of acrylic thickener DR72, 3.5 parts of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and 3.5 parts of 2-(2-hydroxy-5-methylphenyl)benzotriazole were added to the second mixture, and the speed was set to 400 r / min and stirred for 30 minutes, and then allowed to stand for 4 hours to obtain a third mixture;

[0066] 5) Continue to add 2 parts of a film-forming aid prepared by mixing 1:1 of ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether, 2 parts of an S430 fluorine-modified acrylate leveling agent, 2.5 parts of dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride, and 6 parts of a softener prepared by mixing 1:1 of methyl hydrogen silicone oil and dimethyl hydroxy silicone oil into the third mixture, set the stirring speed at 190 r / min, and stir for 30 minutes to obtain a mixed color paste;

[0067] 6) Place the mixed color paste in a three-roll grinder, set the gap to 0.3 mm, and grind until the fineness of the mixed color paste is below 50 μm to obtain a red waterproof hand-painted textile pigment.

[0068] Comparative Example 1

[0069] The difference between this comparative example and Example 1 is that the waterproofing agent prepared by mixing dihydroxy polydimethylsiloxane and perfluorohexylethyl acrylate in a ratio of 1:1 is removed in step 3).

[0070] Comparative Example 2

[0071] The difference between this comparative example and Example 1 is that step 5) is changed to: continue to add 2 parts of a film-forming aid prepared by mixing 1:1 of ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether, 2 parts of S430 fluorine-modified acrylate leveling agent, 2.5 parts of dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride and 6 parts of methyl hydrogenated silicone oil into the third mixture, set the stirring speed to 190 r / min and stir for 30 min to obtain a mixed color paste.

[0072] Comparative Example 3

[0073] The difference between this comparative example and Example 1 is that step 5) is changed to: continue to add 2 parts of a film-forming aid prepared by mixing 1:1 of ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether, 2 parts of S430 fluorine-modified acrylate leveling agent, 2.5 parts of dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride and 6 parts of dimethylhydroxysilicone oil into the third mixture, set the stirring speed to 190 r / min and stir for 30 minutes to obtain a mixed color paste.

[0074] Comparative Example 4

[0075] The difference between this comparative example and Example 1 is that step 5) is changed to: continue to add 2 parts of a film-forming aid prepared by mixing ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether in a ratio of 1:1, 2 parts of an S430 fluorine-modified acrylate leveling agent, 2.5 parts of dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride and 6 parts of a softener prepared by mixing methyl hydrogen silicone oil and dimethyl hydroxy silicone oil in a ratio of 2:1 into the third mixture, set the stirring speed to 190 r / min, and stir for 30 min to obtain a mixed color paste.

[0076] Comparative Example 5

[0077] The difference between this comparative example and Example 4 is that step 5) is changed to: continue to add 2 parts of a film-forming aid prepared by mixing 1:1 of ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether, 2 parts of an S430 fluorine-modified acrylate leveling agent, 2.5 parts of dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride and 6 parts of a softener prepared by mixing 1:2 of methyl hydrogen silicone oil and dimethyl hydroxy silicone oil into the third mixture, set the stirring speed to 190 r / min and stir for 30 min to obtain a mixed color paste.

[0078] Comparative Example 6

[0079] The difference between this comparative example and Example 1 is that step 5) is changed to: continue to add 2 parts of a film-forming aid prepared by mixing 1:1 of ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether, 2 parts of an S430 fluorine-modified acrylate leveling agent and 2.5 parts of dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride into the third mixture, set the stirring speed to 190 r / min and stir for 30 min to obtain a mixed color paste.

[0080] Comparative Example 7

[0081] The difference between this comparative example and Example 1 is that step 5) is changed to: continue to add 2 parts of a film-forming aid prepared by mixing 1:1 ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether, 2 parts of S430 fluorine-modified acrylate leveling agent and 6 parts of amino silicone oil emulsion into the third mixture, set the stirring speed to 190 r / min and stir for 30 minutes to obtain a mixed color paste.

[0082] Comparative Example 8

[0083] The difference between this comparative example and Example 1 is that step 4) is changed to: the stirring tank is cooled to 25° C., 1 part of acrylic thickener DR72 and 3.5 parts of 2-(2-hydroxy-5-methylphenyl)benzotriazole are added to the second mixture, the speed is set to 400 r / min and stirred for 30 minutes, and then allowed to stand for 4 hours to obtain a third mixture.

[0084] Comparative Example 9

[0085] The difference between this comparative example and Example 1 is that step 4) is changed to: the stirring tank is cooled to 25° C., 1 part of acrylic thickener DR72 and 3.5 parts of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate are added to the second mixture, the speed is set to 400 r / min and stirred for 30 minutes, and then allowed to stand for 4 hours to obtain a third mixture.

[0086] Comparative Example 10

[0087] The difference between this comparative example and Example 1 is that step 4) is changed to: the stirring tank is cooled to 25° C., 1 part of acrylic thickener DR72 and 3.5 parts of UV-123 coating anti-aging agent are added to the second mixture, the speed is set to 400 r / min and stirred for 30 minutes, and then allowed to stand for 4 hours to obtain a third mixture.

[0088] experiment:

[0089] 1. Waterproofness test: The pigments prepared in the above embodiments and comparative examples were used to draw a 1mm thick coating on a 10*10cm white pure cotton textile of the same material. The painted color blocks were all 5*5cm squares. After the pigments were completely dry, each group of textiles was sewn together with the same pieces of white textiles, placed in a soap solution with a concentration of 20%, stirred at 40°C at a speed of 400r / min for 30min, and taken out for five-level rating of discoloration and staining. The evaluation standard is to use ISO discoloration gray card and ISO staining gray card for evaluation. The higher the grade, the better the color fastness, that is, the better the waterproofness. The corresponding color fastness grades can be provided, namely 5, 4-5, 4, 3-4, 3, 2-3, 2, 1-2 and 1. Note: The soap solution does not contain fluorescent whitening agent or other bleaching ingredients, see Table 1.

[0090] Table 1

[0091] Group Color fastness Color fastness Example 1 3-4 3 Example 2 3 3-4 Example 3 3-4 3-4 Example 4 5 5 Comparative Example 1 1-2 2 Comparative Example 2 3-4 4 Comparative Example 3 4 3-4 Comparative Example 4 4-5 4-5 Comparative Example 5 4 4-5 Comparative Example 6 3-4 3-4 Comparative Example 7 2-3 2

[0092] 2. Weathering test: The pigments prepared in the above examples and comparative examples were coated on blank white cards respectively, and after drying, they were placed in a Q-Sun xenon lamp aging tester, and 40°C and daylight cycle mode were selected. Samples were taken from 20, 40, 80, 160, and 320 hours, and compared with the standard card level. The best is 8, and the worst is 1, see Table 2.

[0093] Table 2

[0094] Group 20h 40h 80 160 320 Example 1 8 8 7 7 6 Example 2 8 7 7 7 6 Example 3 8 7 7 6 6 Example 4 8 8 7 7 7 Comparative Example 8 7 6 4 3 2 Comparative Example 9 8 7 6 5 3 Comparative Example 10 7 7 6 5 4

[0095] 3. Softness test: The pigments prepared in the above examples and comparative examples were used to paint a 1 mm thick coating on a 10*10 cm white pure cotton textile of the same material, and one side was fully coated. After the pigment was completely dry, it was placed in a fabric softness tester for testing, and the same textile without pigment was used as the control group. The softness test value data is expressed as 1~10. The higher the value, the better the softness and the higher the quality. The softness is described as: hard (0) to soft (10) values, see Table 3.

[0096] Table 3

[0097] Group Softness Example 1 5.3 Example 2 5.7 Example 3 5.6 Example 4 8.8 Comparative Example 1 4.9 Comparative Example 2 6.1 Comparative Example 3 5.9 Comparative Example 4 7.1 Comparative Example 5 7.3 Comparative Example 6 6.8 Comparative Example 7 7.2 Control group 9.1

Claims

1. A method for preparing a waterproof hand-painted textile pigment, characterized in that: The invention comprises the following components in parts by weight: 60-70 parts of pure acrylic emulsion, 5-15 parts of pigment toner, 0.5-1.5 parts of thickener, 2-5 parts of ultraviolet absorber, 2-5 parts of antioxidant, 3-6 parts of cross-linking agent, 1-3 parts of leveling agent, 1-3 parts of waterproofing agent, 1-3 parts of film-forming aid, 60-70 parts of deionized water, 1-2 parts of mildewproofing agent BCM, 1.5-2.5 parts of 202 defoaming agent, 2-3 parts of organosilicon quaternary ammonium salt, and 5-7 parts of softener; The preparation method is: 1) Mix pure acrylic emulsion and deionized water in a ratio of 1:1, set the speed at 180-200 r / min in a stirring tank and stir for 30 min to obtain a first mixture; 2) Heat the stirring tank to 40-50°C, continue to add pigment powder, cross-linking agent, 202 defoamer, waterproofing agent, mildewproofing agent BCM to the first mixture by weight, set the speed to 500-800r / min and stir for 1-2h to obtain the second mixture; 3) Cool the stirring tank to 20-25°C, continue to add thickener, UV absorber and antioxidant to the second mixture, set the speed to 350-450r / min and stir for 30min, then let it stand for 3-5h to obtain the third mixture; 4) Continue to add film-forming aid, leveling agent, organosilicon quaternary ammonium salt and softener to the third mixture, set the stirring speed to 180-200r / min and stir for 30min to obtain a mixed color paste; 5) placing the mixed color paste in a three-roll grinder, setting the gap to 0.3 mm, and grinding until the fineness of the mixed color paste is less than 50 μm to obtain a waterproof hand-painted textile pigment; Wherein, the preparation method of pigment toner is as follows: Put the pigment powder into the ball mill, select 0.3mm zirconium oxide medium balls, the ratio of pigment to medium balls loaded into the ball mill is 1:1.5, and it needs to be loaded to 2 / 3 of the ball mill. After loading, close the feed port, pass nitrogen for 15 minutes, set the ball mill speed to 500-800r / min, forward for 30 minutes, reverse for 30 minutes, and then alternate forward and reverse to 1000 mesh to collect the pigment powder; Among them, the thickener is an acrylic thickener; the film-forming aid is a 1:1 mixture of ethylene glycol butyl ether acetate and dipropylene glycol monopropyl ether; the cross-linking agent is trimethylolpropane trimethacrylate; the leveling agent is a fluorine-modified acrylic leveling agent; the waterproofing agent is a 1:1 mixture of dihydroxy polydimethylsiloxane and perfluorohexyl ethyl acrylate; and the ultraviolet absorber is 3-(3,5-di-tert-butyl-4-hydroxyphenyl) methyl propionate.

2. The method for preparing a waterproof hand-painted textile pigment according to claim 1, characterized in that: The antioxidant is 2-(2-hydroxy-5-methylphenyl)benzotriazole.

3. The method for preparing a waterproof hand-painted textile pigment according to claim 1, characterized in that: The softener is a 1:1 mixture of methyl hydrogen silicone oil and dimethyl hydroxy silicone oil.

4. The method for preparing a waterproof hand-painted textile pigment according to claim 1, characterized in that: The organosilicon quaternary ammonium salt is dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride.