Inorganic building coating with stable color matching performance

Abstract

The application belongs to the technical field of inorganic building coating, and particularly discloses an inorganic building coating with stable toning performance. The inorganic building coating is prepared by reasonably matching and specifically selecting main components such as organosiloxane modified potassium silicate, cellulose, organosilicon leveling agent, organosilicon hydrophobic agent, polymer emulsion, additive, pH regulator and solid filler. The inorganic building coating overcomes the color difference problem of the lap area caused by the obvious absorption of the first paint film to the second paint film when the general inorganic coating is recoated, and overcomes the problems of color floating and color difference caused by shrinkage when the inorganic coating is applied. The inorganic silicate building coating can be toning with any color paste. After wall construction, the paint film color is uniform, and there is no problem of color floating and color difference through naked eye observation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of inorganic building coatings, and particularly relates to an inorganic building coating with stable color adjusting performance. BACKGROUND

[0002] With the release and implementation of GB 50222-2017 "Code for Design of Building Decoration Interior Fire Protection", the standard has clear requirements for the combustion performance grade of the decorative materials of the roof and wall of special buildings, civil buildings and factory warehouses, and most of them are required to reach A level (non-combustible). Among numerous building coatings, inorganic coatings are concerned due to their natural excellent fireproof performance. Inorganic coatings generally refer to a kind of coatings with inorganic materials as the main film-forming material or binder, and the inorganic film-forming material commonly used in building coatings mainly includes silicates. Inorganic silicate coatings have excellent fireproof performance due to containing little or no organic matter, and have excellent weather resistance, antibacterial and mildew resistance, and air permeability and water resistance.

[0003] Inorganic coatings have a high-strength network skeleton structure after curing, and the pigment volume concentration (PVC) is greater than the critical pigment volume concentration (CPVC), so in color adjustment, inorganic coatings are more likely to have color adjustment problems such as roller coating mottling, lap color difference, difficulty in matching dark colors, and fading than ordinary latex paints. These problems limit the development of inorganic coatings in the field of personalized decoration.

[0004] Therefore, under the premise of meeting the fireproof performance requirements, how to solve the above-mentioned disadvantages of inorganic coatings is a problem to be solved. SUMMARY

[0005] In order to solve the current color adjustment difficulty of inorganic coatings and the problem of color difference and mottling of the coating after wall construction, the present application provides an inorganic building coating with stable color adjusting performance. The inorganic building coating has good compatibility with various color pastes, and the surface color of the coating formed after construction is uniform without problems such as mottling, color difference and floating color.

[0006] An inorganic building coating with stable color adjusting performance comprises the following components uniformly mixed according to mass parts:

[0007]

[0008]

[0009] Among them, the cellulose is at least one or more of non-ionic hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, methyl cellulose and ethyl cellulose with a viscosity of not less than 50,000, or at least one of anionic hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, methyl cellulose and ethyl cellulose.

[0010] By using nonionic or anionic cellulose with a viscosity greater than or equal to 50,000, the viscosity of the above-mentioned inorganic architectural coatings can be adjusted to no less than 80 KU. This improves the dispersion and suspension performance of the color paste in the inorganic architectural coating when it is mixed with various color pastes, solves the problem of color paste floating in the later stage of color-matched inorganic coatings, and avoids the problem of color difference after construction.

[0011] In this inorganic architectural coating, organosiloxane-modified potassium silicate is used instead of ordinary potassium silicate as the main film-forming substance, resulting in better leveling properties and a significant promoting effect on color matching and development. Simultaneously, the cured coating is more dense; the organosiloxane-modified potassium silicate, combined with an organosilicon hydrophobic agent, reduces the surface energy of the coating. The dense film and hydrophobic properties reduce the absorption of one coat by the next, minimizing color differences at coating overlaps. Furthermore, it exhibits good storage stability.

[0012] Furthermore, organosiloxane-modified potassium silicate can be selected from products such as KH10 from Xi'an Tongxin Company, V33 from Anhui Cima Company, or other similar products on the market.

[0013] The use of silicone leveling agents imparts excellent leveling properties to this inorganic architectural coating, reducing the problem of paint film blooming caused by pinholes in inorganic architectural coatings.

[0014] Furthermore, silicone leveling agents can be selected from products such as SN4034 from Shenzhen Bamboo Chemical Co., Ltd., BYK333 from BYK Chemical Co., Ltd., or other similar products on the market.

[0015] Furthermore, the polymer emulsion can be selected from at least one of styrene-acrylic emulsion, silicone-acrylic emulsion, and pure acrylic emulsion.

[0016] Furthermore, the additives generally include 4 to 10 parts of wetting and dispersing agents, such as high molecular weight block copolymers containing pigment affinity groups, and 4 to 10 parts of defoamers, such as at least one of mineral oils, organosilicon compounds, organosilicon polyethers, and non-silicone defoamers.

[0017] Furthermore, pH adjusters can be selected from conventional products such as AMP-95, SN95, ammonia, dimethylethanolamine, sodium hydroxide solution, potassium hydroxide solution, or other similar products commonly used as pH adjusters in inorganic coatings; they will not be listed here.

[0018] Furthermore, the solid filler can be selected from conventional solid fillers in inorganic coatings such as titanium dioxide, kaolin, heavy calcium carbonate, and bentonite.

[0019] The beneficial effects of this invention are:

[0020] 1) Generally, due to the microporous surface and excellent hydrophilic performance of the inorganic coating, when the coating is repainted, the first paint film has obvious absorption to the second paint film, resulting in color difference in the overlapping area. The inorganic building coating provided by the application uses organosiloxane modified potassium silicate as the main film-forming material, and the coating after curing is more dense. The coating surface energy is reduced by using an organic silicon hydrophobic agent. The dense paint film and the hydrophobic performance reduce the absorption of the first paint film to the second paint film, and reduce the color difference in the coating overlapping area.

[0021] 2) Generally, when the inorganic coating is constructed, shrinkage holes appear, the shrinkage hole area dries quickly, and the dynamic migration rate of the color paste in different areas is different, which easily leads to color floating and color difference. The inorganic building coating provided by the application has excellent leveling performance by adding an organic silicon leveling agent, which avoids the color difference problem caused by shrinkage holes of the inorganic coating.

[0022] 3) In the application, the inorganic building coating prepared by using high-viscosity non-ionic cellulose or anionic cellulose can improve the dispersion and suspension performance of the color paste in the inorganic coating, effectively solve the problem of color paste floating in the later stage of the color adjusting inorganic coating, and avoid the problem of color difference after construction.

[0023] The inorganic silicate building coating prepared by the above excellent means can be color adjusted with any color paste. After wall construction, the paint film color is uniform, and there is no color difference and color floating problem. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the color display effect of the phthalo blue coating after the inorganic building coating according to embodiment 1 of the application is adjusted;

[0025] Figure 2 is Figure 1 the magnified effect of the phthalo blue coating in

[0026] Figure 3 is the color display effect of the carbon black coating after the inorganic building coating according to embodiment 2 of the application is adjusted;

[0027] Figure 4 is the color display effect of the green coating after the inorganic building coating according to embodiment 2 of the application is adjusted;

[0028] Figure 5 is the color display effect of the phthalo blue coating after the first comparative coating according to comparative example 1 of the application is adjusted;

[0029] Figure 6 is the magnified effect of the phthalo blue coating after the second comparative coating according to comparative example 2 of the application is adjusted;

[0030] Figure 7is a color development effect of a third comparative paint according to Comparative Example 1 of the present application after the third comparative paint is adjusted to black color;

[0031] Figure 8 is a color development effect of a fourth comparative paint according to Comparative Example 2 of the present application after the fourth comparative paint is adjusted to green color. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, rather than all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0033] Embodiment 1

[0034] In the present embodiment, an inorganic building paint is prepared by using the following method.

[0035] 6g of non-ionic hydroxyethyl cellulose with a viscosity of 500,000 and 1g of AMP-95 are added in 377g of deionized water, and stirred at a rotation speed of 500r / min for 5min.

[0036] After the cellulose is swelled, 2g of defoaming agent and 4g of wetting dispersant are added, and dispersed at a rotation speed of 500r / min for 10min.

[0037] Then, 100g of rutile titanium dioxide, 85g of 1200 mesh kaolin, 150g of 800 mesh heavy calcium, and 3g of modified bentonite are added, the rotation speed is adjusted to 1500r / min, and stirred and dispersed for 30min, so that the fineness of the reaction system is reduced to below 50μm.

[0038] The rotation speed is adjusted to 600r / min, 2g of defoaming agent and 60g of odorless styrene-acrylate emulsion are sequentially added, and stirred and dispersed for 10min.

[0039] 190g of organically modified potassium silicate KH10 is continuously added, stirred for 10min, and then 10g of organosilicon hydrophobic agent, 8g of organosilicon leveling agent, and 2g of defoaming agent are gradually added, stirred uniformly, and the viscosity of the reaction system is controlled at about 87KU, to obtain a white inorganic silicate building paint.

[0040] That is, the present embodiment provides an inorganic building paint which is uniformly mixed according to the following composition and mass fraction:

[0041]

[0042] The solid filler is a mixture of 100 parts of rutile titanium dioxide, 85 parts of 1200 mesh kaolin, 150 parts of 800 mesh heavy calcium, and 3 parts of modified bentonite.

[0043] The unit of the mass fraction is gram.

[0044] Example 2

[0045] In this example, another inorganic building coating was prepared by using the following method.

[0046] In 377 g of deionized water, 6 g of anionic hydroxyethyl cellulose and 1 g of AMP-95 were added, and stirred at a speed of 500 r / min for 5 min.

[0047] After the cellulose was swelled, 2 g of defoaming agent, 4 g of wetting dispersant were added, and dispersed at a speed of 500 r / min for 10 min.

[0048] Then 20 g of rutile titanium dioxide, 85 g of 1200 mesh kaolin, 230 g of 800 mesh heavy calcium, and 3 g of modified bentonite were added, the stirring speed was adjusted to 1500 r / min, and stirred and dispersed for 30 min, so that the fineness of the reaction system was reduced to below 50 μm.

[0049] The stirring speed was adjusted to 600 r / min, 2 g of defoaming agent and 60 g of odorless styrene-acrylic emulsion were added in turn, and stirred and dispersed for 10 min.

[0050] Continue to add 190 g of organically modified potassium silicate KH10, stir for 10 min, and then gradually add 10 g of silicone hydrophobic agent, 8 g of silicone leveling agent, and 2 g of defoaming agent, stir uniformly and control the viscosity of the reaction system at about 85 KU, to obtain a white inorganic silicate building coating.

[0051] That is, the present example provides an inorganic building coating which is uniformly mixed according to the following composition and mass fraction:

[0052]

[0053] The solid filler is a mixture of 20 parts of rutile titanium dioxide, 85 parts of 1200 mesh kaolin, 230 parts of 800 mesh heavy calcium, and 3 parts of modified bentonite.

[0054] The unit of the mass fraction is gram.

[0055] Example 3

[0056] In this example, an inorganic building coating was prepared by using the following method.

[0057] In 400 g of deionized water, 8 g of non-ionic hydroxyethyl cellulose with a viscosity of 50,000 (viscosity of 50,000) and 0.5 g of AMP-95 were added, and stirred at a speed of 500 r / min for 5 min.

[0058] After the cellulose is swelled, 2g of defoaming agent, 4g of wet dispersing agent are added, and dispersed for 10 minutes at a rotation speed of 500r / min.

[0059] Then, 100g of rutile titanium dioxide, 50g of 1200 mesh kaolin, 150g of 800 mesh heavy calcium, and 3g of modified bentonite are added, the rotation speed is adjusted to 1500r / min, and stirring and dispersion are performed for 30 minutes, so that the fineness of the reaction system is reduced to below 50μm.

[0060] The rotation speed is adjusted to 600r / min, 2g of defoaming agent and 60g of odorless styrene-acrylate emulsion are sequentially added, and stirring and dispersion are performed for 10 minutes.

[0061] 190g of organically modified potassium silicate KH10 is continuously added, stirring is performed for 10 minutes, then 15g of organosilicon hydrophobic agent, 10g of organosilicon leveling agent, and 2g of defoaming agent are gradually added, stirring is uniformly performed, and the viscosity of the reaction system is controlled at about 95KU, thereby obtaining a white inorganic silicate building coating.

[0062] That is, the embodiment provides an inorganic building coating which is uniformly mixed according to the following composition and mass fraction:

[0063]

[0064] The solid filler is a mixture of 100 parts of rutile titanium dioxide, 50 parts of 1200 mesh kaolin, 150 parts of 800 mesh heavy calcium, and 3 parts of modified bentonite.

[0065] The unit of the above mass fraction is gram.

[0066] Example 4

[0067] In this embodiment, an inorganic building coating is prepared by the following method.

[0068] 8g of anionic hydroxyethyl cellulose and 5g of AMP-95 are added to 265g of deionized water, and stirring is performed for 5 minutes at a rotation speed of 500r / min.

[0069] After the cellulose is swelled, 2g of defoaming agent, 10g of wet dispersing agent are added, and dispersed for 10 minutes at a rotation speed of 500r / min.

[0070] Then, 150g of rutile titanium dioxide, 95g of 1200 mesh kaolin, 200g of 800 mesh heavy calcium, and 3g of modified bentonite are added, the rotation speed is adjusted to 1500r / min, and stirring and dispersion are performed for 30 minutes, so that the fineness of the reaction system is reduced to below 50μm.

[0071] The rotation speed is adjusted to 600r / min, 2g of defoaming agent and 60g of odorless styrene-acrylate emulsion are sequentially added, and stirring and dispersion are performed for 10 minutes.

[0072] Continue to add 190 g of organically modified potassium silicate KH10, stir for 10 min, then gradually add 20 g of silicone hydrophobic agent, 2 g of silicone leveling agent, and 2 g of defoaming agent, stir uniformly and control the viscosity of the reaction system at about 95 KU, to obtain a white inorganic silicate building coating.

[0073] That is, the present embodiment provides an inorganic building coating uniformly mixed according to the following composition and mass fraction:

[0074]

[0075] The solid filler is a mixture of 150 parts of rutile titanium dioxide, 95 parts of 1200 mesh kaolin, 200 parts of 800 mesh heavy calcium carbonate, and 3 parts of modified bentonite.

[0076] The unit of the above mass fraction is gram.

[0077] Example 5

[0078] In this embodiment, an inorganic building coating is obtained by using the following method.

[0079] Add 6 g of non-ionic hydroxyethyl cellulose with a viscosity of 50,000 and 2 g of SN95 to 337 g of deionized water, and stir at a speed of 500 r / min for 5 min.

[0080] After the cellulose is swelled, add 4 g of defoaming agent and 4 g of wetting dispersant, and disperse at a speed of 500 r / min for 10 min.

[0081] Then add 140 g of rutile titanium dioxide, 85 g of 1200 mesh kaolin, 170 g of 800 mesh heavy calcium carbonate, and 3 g of modified bentonite, adjust the stirring speed to 1500 r / min, and stir and disperse for 30 min, so that the fineness of the reaction system is reduced to below 50 μm.

[0082] Adjust the stirring speed to 600 r / min, and add 4 g of defoaming agent and 80 g of odorless styrene-acrylate emulsion in turn, and stir and disperse for 10 min.

[0083] Continue to add 150 g of organically modified potassium silicate KH10, stir for 10 min, then gradually add 20 g of silicone hydrophobic agent, 2 g of silicone leveling agent, and 2 g of defoaming agent, stir uniformly and control the viscosity of the reaction system at about 95 KU, to obtain a white inorganic silicate building coating.

[0084] That is, the present embodiment provides an inorganic building coating uniformly mixed according to the following composition and mass fraction:

[0085]

[0086] The solid filler is a mixture of 140 parts of rutile titanium white powder, 85 parts of 1200 mesh kaolin, 170 parts of 800 mesh heavy calcium carbonate and 3 parts of modified bentonite.

[0087] The unit of the above mass fraction is gram.

[0088] Example 6

[0089] In this example, an inorganic building coating is prepared by the following method.

[0090] 6 g of anionic hydroxyethyl cellulose with a viscosity of 6 g of ammonia water are added to 400 g of deionized water, and stirred at a speed of 500 r / min for 5 min.

[0091] After the cellulose is swelled, 2 g of defoaming agent, 6 g of wetting dispersant are added, and dispersed at a speed of 500 r / min for 10 min.

[0092] Then 130 g of rutile titanium white powder, 85 g of 1200 mesh kaolin, 150 g of 800 mesh heavy calcium carbonate, and 3 g of modified bentonite are added, the stirring speed is adjusted to 1500 r / min, and the reaction system is dispersed for 30 min to reduce the fineness to below 50 μm.

[0093] The stirring speed is adjusted to 600 r / min, 1 g of defoaming agent and 80 g of odorless styrene-acrylic emulsion are added in sequence, and stirred and dispersed for 10 min.

[0094] 120 g of organically modified potassium silicate KH10 is continuously added, stirred for 10 min, and then 20 g of organosilicon hydrophobic agent, 10 g of organosilicon leveling agent, and 1 g of defoaming agent are gradually added, stirred uniformly, and the viscosity of the reaction system is controlled at about 82 KU, to obtain a white inorganic silicate building coating.

[0095] That is, the example provides an inorganic building coating mixed uniformly according to the following composition and mass fraction:

[0096]

[0097] The solid filler is a mixture of 130 parts of rutile titanium white powder, 85 parts of 1200 mesh kaolin, 150 parts of 800 mesh heavy calcium carbonate and 3 parts of modified bentonite.

[0098] The unit of the above mass fraction is gram.

[0099] Example 7

[0100] In this example, an inorganic building coating is prepared by the following method.

[0101] In 337 g of deionized water, 6 g of non-ionic hydroxyethyl cellulose with a viscosity of 50,000 and 0.5 g of AMP-95 were added, and stirred at a speed of 500 r / min for 5 min.

[0102] After the cellulose was swelled, 2 g of defoaming agent and 8 g of wet dispersing agent were added, and dispersed at a speed of 500 r / min for 10 min.

[0103] Then, 150 g of rutile titanium dioxide, 85 g of 1200 mesh kaolin, 150 g of 800 mesh heavy calcium, and 3 g of modified bentonite were added, the stirring speed was adjusted to 1500 r / min, and the reaction system was dispersed for 30 min to reduce the fineness to below 50 μm.

[0104] The stirring speed was adjusted to 600 r / min, 2 g of defoaming agent and 20 g of odorless styrene-acrylate emulsion were added in sequence, and dispersed for 10 min.

[0105] 220 g of organically modified potassium silicate KH10 was continuously added, stirred for 10 min, and then 8 g of organic silicon hydrophobic agent, 2 g of organic silicon leveling agent, and 2 g of defoaming agent were gradually added, stirred uniformly, and the viscosity of the reaction system was controlled at about 85 KU, to obtain a white inorganic silicate building coating.

[0106] That is, the present embodiment provides an inorganic building coating which is uniformly mixed according to the following composition and mass fraction:

[0107]

[0108] The solid filler is a mixture of 100 parts of rutile titanium dioxide, 85 parts of 1200 mesh kaolin, 150 parts of 800 mesh heavy calcium, and 3 parts of modified bentonite.

[0109] The unit of the above mass fraction is gram.

[0110] Example 8

[0111] In this embodiment, an inorganic building coating was prepared by the following method.

[0112] In 290 g of deionized water, 6 g of non-ionic hydroxyethyl cellulose with a viscosity of 50,000 and 1 g of AMP-95 were added, and stirred at a speed of 500 r / min for 5 min.

[0113] After the cellulose was swelled, 2 g of defoaming agent and 4 g of wet dispersing agent were added, and dispersed at a speed of 500 r / min for 10 min.

[0114] Then 150 g of rutile titanium dioxide, 85 g of 1200 mesh kaolin, 170 g of 800 mesh heavy calcium carbonate, and 3 g of modified bentonite are added, the rotating speed is adjusted to 1500 r / min, and stirring and dispersion are performed for 30 min, so that the fineness of the reaction system is reduced to below 50 μm.

[0115] The rotating speed is adjusted to 600 r / min, 2 g of defoaming agent and 20 g of odorless styrene-acrylate emulsion are sequentially added, and stirring and dispersion are performed for 10 min.

[0116] Then 250 g of organically modified potassium silicate KH10 is continuously added, stirring is performed for 10 min, 10 g of organosilicon hydrophobic agent, 8 g of organosilicon leveling agent, and 2 g of defoaming agent are gradually added, and stirring is uniformly performed and the viscosity of the reaction system is controlled to be about 87 KU, so that a white inorganic silicate building coating is obtained.

[0117] That is, the embodiment provides an inorganic building coating which is uniformly mixed according to the following composition and mass fraction:

[0118]

[0119] The solid filler is a mixture of 150 parts of rutile titanium dioxide, 85 parts of 1200 mesh kaolin, 170 parts of 800 mesh heavy calcium carbonate, and 3 parts of modified bentonite.

[0120] The unit of the above mass fraction is gram.

[0121] Example 9

[0122] In this embodiment, an inorganic building coating is prepared by using the following method.

[0123] In 255 g of deionized water, 8 g of non-ionic hydroxyethyl cellulose with a viscosity of 50,000 and 1 g of AMP-95 are added, and stirring is performed at a rotating speed of 500 r / min for 5 min.

[0124] After the cellulose is swelled, 2 g of defoaming agent and 4 g of wetting dispersant are added, and stirring and dispersion are performed at a rotating speed of 500 r / min for 10 min.

[0125] Then 100 g of rutile titanium dioxide, 85 g of 1200 mesh kaolin, 150 g of 800 mesh heavy calcium carbonate, and 3 g of modified bentonite are added, the rotating speed is adjusted to 1500 r / min, and stirring and dispersion are performed for 30 min, so that the fineness of the reaction system is reduced to below 50 μm.

[0126] The rotating speed is adjusted to 600 r / min, 2 g of defoaming agent and 70 g of odorless styrene-acrylate emulsion are sequentially added, and stirring and dispersion are performed for 10 min.

[0127] Continue to add 300 g of organically modified potassium silicate KH10, stir for 10 min, then gradually add 10 g of silicone hydrophobic agent, 8 g of silicone leveling agent, and 2 g of defoaming agent, stir uniformly and control the viscosity of the reaction system at about 92 KU, to obtain a white inorganic silicate building coating.

[0128] That is, the present embodiment provides an inorganic building coating uniformly mixed according to the following composition and mass fraction:

[0129]

[0130] The solid filler is a mixture of 100 parts of rutile titanium dioxide, 85 parts of 1200 mesh kaolin, 150 parts of 800 mesh heavy calcium carbonate, and 3 parts of modified bentonite.

[0131] The unit of the above mass fraction is gram.

[0132] Example 10

[0133] In this embodiment, another inorganic building coating is obtained by using the following method.

[0134] Add 6 g of anionic hydroxyethyl cellulose and 1 g of AMP-95 to 280 g of deionized water, and stir at a speed of 500 r / min for 5 min.

[0135] After the cellulose is swelled, add 2 g of defoaming agent and 4 g of wetting dispersant, and disperse at a speed of 500 r / min for 10 min.

[0136] Then add 140 g of rutile titanium dioxide, 85 g of 1200 mesh kaolin, 200 g of 800 mesh heavy calcium carbonate, and 3 g of modified bentonite, adjust the stirring speed to 1500 r / min, and stir and disperse for 30 min, so that the fineness of the reaction system is reduced to below 50 μm.

[0137] Adjust the stirring speed to 600 r / min, and then add 2 g of defoaming agent and 60 g of odorless styrene-acrylic emulsion, and stir and disperse for 10 min.

[0138] Continue to add 300 g of organically modified potassium silicate KH10, stir for 10 min, then gradually add 10 g of silicone hydrophobic agent, 8 g of silicone leveling agent, and 2 g of defoaming agent, stir uniformly and control the viscosity of the reaction system at about 92 KU, to obtain a white inorganic silicate building coating.

[0139] That is, the present embodiment provides an inorganic building coating uniformly mixed according to the following composition and mass fraction:

[0140]

[0141] The solid filler is a mixture of 140 parts of rutile titanium dioxide, 85 parts of 1200 mesh kaolin, 200 parts of 800 mesh heavy calcium carbonate, and 3 parts of modified bentonite.

[0142] The unit of the mass fraction is gram.

[0143] Comparative Example 1

[0144] In the description of the present comparative example, the same as that of Example 1 will not be repeated here, only the differences from Example 1 will be described. The present comparative example differs from Example 1 in that a conventional non-ionic cellulose with lower viscosity is used in the present comparative example, i.e. an equal amount of non-ionic ethyl cellulose with a viscosity of 30,000 is used instead; the rest is provided according to the description of Example 1 to provide a first comparative inorganic coating.

[0145] Comparative Example 2

[0146] In the description of the present comparative example, the same as that of Example 1 will not be repeated here, only the differences from Example 1 will be described. The present comparative example differs from Example 1 in that no silicone leveling agent is added in the present comparative example; the rest is provided according to the description of Example 1 to provide a second comparative inorganic coating.

[0147] Comparative Example 3

[0148] In the description of the present comparative example, the same as that of Example 2 will not be repeated here, only the differences from Example 2 will be described. The present comparative example differs from Example 2 in that an equal amount of ordinary potassium silicate is used instead of organically modified potassium silicate KH10; the rest is provided according to the description of Example 2 to provide a third comparative inorganic coating.

[0149] Comparative Example 4

[0150] In the description of the present comparative example, the same as that of Example 2 will not be repeated here, only the differences from Example 2 will be described. The present comparative example differs from Example 2 in that a smaller amount of cellulose is used, i.e. only 4 g of anionic ethyl cellulose is used; the rest is provided according to the description of Example 2 to provide a fourth comparative inorganic coating.

[0151] The color matching and color rendering performance and other comprehensive performance of the inorganic building coatings obtained in the above examples and comparative examples will be tested as follows.

[0152] The other performance data of the inorganic building coatings provided in the above examples and comparative examples are shown in Table 1 below.

[0153] Table 1 Performance data of inorganic building coatings of each example and comparative example

[0154]

[0155]

[0156] From the comparison of the performance data in Table 1, it can be seen that the inorganic building coating provided by the present application has outstanding advantages, especially in the aspect of color matching and color difference.

[0157] In the color matching and color development performance test, it is worth noting that for inorganic building coatings, the deeper and thicker the color of the color-matched coating, the more likely it is to cause color floating and color difference in application and testing. Therefore, the darkest carbon black color and the brightest phthalocyanine blue and green were selected for color matching and testing.

[0158] The inorganic building coating provided by Example 1 was added with carbon black paste and phthalocyanine blue paste, respectively, and the amount of color paste added was 5wt% (i.e. the mass ratio of color paste to inorganic building coating). After stirring, carbon black color coating and phthalocyanine blue color coating were obtained by color matching.

[0159] After color matching, the carbon black color coating had no color floating in the color matching tank, and had good color development, no color difference and color floating when applied to the wall. At the same time, the carbon black color coating was rolled on a black and white paper card with a 100μm roller, and one roll was made on the left and right sides of the paper card, and a re-coated area, also known as a joint area, appeared in the middle, as shown in Figure 1 .

[0160] Figure 2 The phthalocyanine blue coating in Example 1 is shown in the actual state in the color matching tank after standing for half an hour.

[0161] The inorganic building coating provided by Example 2 was added with green paste and phthalocyanine blue paste, respectively, and the amount of color paste added was 5wt% (i.e. the mass ratio of color paste to inorganic building coating). After stirring, green color coating or phthalocyanine blue color coating was obtained by color matching.

[0162] The green color coating after color matching was tested using the same test method as the carbon black color coating in Example 1, as shown in Figure 3 .

[0163] The phthalocyanine blue color coating after color matching was rolled on a black and white paper card with a roller, and after drying, it was enlarged and photographed, as shown in Figure 4 .

[0164] The first comparative coating provided by Comparative Example 1 was subjected to the same operation as in Example 1 to obtain a first comparative carbon black color coating. The same test was performed on it, as shown in Figure 5 .

[0165] The second comparative paint provided by Comparative Example 2 was subjected to the same operation as in Example 1 to obtain a second comparative phthalo blue paint. And the same tests were conducted as shown in Figure 6

[0166] The third comparative paint provided by Comparative Example 3 was subjected to the same operation as in Example 2 to obtain a third comparative green paint. And the same tests were conducted as shown in Figure 7

[0167] The fourth comparative paint provided by Comparative Example 4 was subjected to the same operation as in Example 2 to obtain a fourth comparative phthalo blue paint. And the same tests were conducted as shown in Figure 8

[0168] Comparative Figure 1 and Figure 5 It can be seen that the phthalo blue paint made by toning the inorganic building paint provided in Example 1 is uniformly mixed in the toning tank under static state, the surface color is uniform, and there is no obvious color paste floating phenomenon. However, the phthalo blue paint made by toning the first comparative paint provided in Comparative Example 1 has a low viscosity of cellulose, which leads to weak dispersion and suspension ability of the color paste, resulting in obvious color paste floating, which will inevitably lead to obvious color floating during construction.

[0169] Comparative Figure 2 and Figure 6 It can be seen that after the phthalo blue paint made by toning the inorganic building paint provided in Example 1 is rolled on black and white paper cards, it can be seen from the enlarged photograph that there is no shrinkage, the overall color is uniform, and there is no color difference. However, the phthalo blue paint made by toning the second comparative paint provided in Comparative Example 2 has a poor leveling property due to the absence of organic silicon leveling agent, resulting in a large number of obvious shrinkage, obvious color difference in the shrinkage area and surrounding area, and very uneven color development.

[0170] Comparative Figure 3 and Figure 7 , and Figure 4 and Figure 8 It can be seen that whether the carbon black paint or the green paint made by toning the inorganic building paint provided in Example 2, the green paint can be observed by naked eye to have uniform color development and no obvious color difference in the overlapping area. However, whether the carbon black paint made by toning the third comparative paint provided in Comparative Example 3 or the green paint made by toning the fourth comparative paint provided in Comparative Example 4, respectively due to the lack of organosiloxane modified potassium silicate and the insufficient amount of cellulose, there is obvious color difference in the overlapping area and the surrounding area after toning.

[0171] It should be noted that in Figure 3 ​​​In the middle, because there is no obvious color difference, therefore, the naked eye can not clearly distinguish is part of the cross-laying two card paper. Figure 7 In the middle, it can also be clearly displayed, Figure 7 In the middle, because there is obvious color difference, therefore, the naked eye can clearly see is part of the overlapping two card paper.

[0172] In summary, the above-mentioned inorganic building coating provided by the present application, wherein each component is essential to its final stable color adjusting performance.

Claims

1. An inorganic architectural coating with stable color-tuning properties, characterized in that, It consists of the following components, which are uniformly mixed in parts by mass: 120-300 parts of organosiloxane-modified potassium silicate; 6-8 parts cellulose; 2-10 parts of silicone leveling agent; 8-20 parts of organosilicon hydrophobic agent; 20-80 parts of polymer emulsion; 8-20 parts of auxiliary agent; pH adjuster 0.5-5 parts; 300-450 parts of solid filler; 220-430 parts water; The cellulose is at least one or more of the following non-ionic hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, methyl cellulose, and ethyl cellulose with a viscosity of not less than 50,000, or at least one of the following anionic hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, methyl cellulose, and ethyl cellulose, and the viscosity of the inorganic building coating is not less than 80 KU. The solid filler is selected from at least one of titanium dioxide, kaolin, heavy calcium carbonate, and bentonite; The organosiloxane-modified potassium silicate is selected from KH10 product of Xi'an Tongxin Company or V33 product of Anhui Cima Company.

2. The inorganic building coating according to claim 1, characterized in that, The polymer emulsion is selected from at least one of styrene-acrylic emulsion, silicone-acrylic emulsion, and pure acrylic emulsion.

3. The inorganic building coating according to claim 1, characterized in that, The additives include 4-10 parts of wetting and dispersing agent and 4-10 parts of defoamer.

4. The inorganic building coating according to claim 3, characterized in that, The wetting and dispersing agent is a high molecular weight block copolymer containing pigment affinity groups; the defoamer is selected from at least one of organosilicon and non-silicone defoamers.

5. The inorganic building coating according to claim 1, characterized in that, The silicone leveling agent is selected from Shenzhu Chemical's SN4034 product or BYK Chemical's BYK333 product.

6. The inorganic building coating according to claim 1, characterized in that, The pH adjuster is selected from any one of AMP-95, SN95, ammonia, dimethylethanolamine, sodium hydroxide solution, and potassium hydroxide solution.

Images