A water-based single-component full-matt self-drying skin-feeling wall varnish and a preparation method thereof

Abstract

The present application relates to a kind of water-based single-component full dumb self-drying skin feeling wall varnish and its preparation method, it relates to paint technical field, by weight parts, the water-based single-component full dumb self-drying skin feeling wall varnish includes following components: water 1.2-24.9 parts, modified potassium silicate-skin feeling emulsion 72.4-90.5 parts, organic microspheres 0.5-2 parts, auxiliary 2.2-6.3 parts;The modified potassium silicate-skin feeling emulsion is by skin feeling emulsion, potassium silicate and silane coupling agent composition.The present application is by introducing modified potassium silicate-skin feeling emulsion, and a kind of water-based single-component full dumb self-drying skin feeling artistic wall varnish is prepared, effectively solves the existing single-component skin feeling varnish existing skin feeling, gloss and other problems.

Description

Technical Field

[0001] This invention relates to the field of coating technology, and in particular to a water-based, single-component, fully matte, self-drying, skin-feeling wall varnish and its preparation method. Background Technology

[0002] Currently, most architectural varnishes on the market focus on achieving a smooth and delicate feel, while varnish products with a unique tactile texture are extremely rare. Artistic effects on walls often rely on textured or tactile paints, but unfortunately, after applying varnish by roller, a thin film is often formed, significantly diminishing the original unique tactile feel. Therefore, there is an urgent market demand for a varnish product that can retain and enhance this special tactile feel.

[0003] With the rise of the minimalist luxury style, traditional high-gloss finishes are gradually fading from the market, replaced by 3 / 4 gloss, 1 / 4 gloss, and even completely matte surface treatments. Among these, completely matte is particularly favored due to its minimal visual fatigue. However, matte powder is lightweight and difficult to disperse, often leading to uneven application and subsequently causing the walls to appear white.

[0004] Therefore, there is an urgent need to develop an innovative water-based, single-component, fully matte, self-drying, skin-feeling artistic wall varnish to fill the market gap and meet consumers' dual pursuit of a special feel and matte effect. Summary of the Invention

[0005] To address the above problems, this invention provides a water-based, single-component, fully matte, self-drying, skin-feel wall varnish and its preparation method.

[0006] In a first aspect, the present invention provides a water-based single-component, matte, self-drying, skin-feeling wall varnish, which, by weight, comprises the following components: 1.2-24.9 parts of water, 72.4-90.5 parts of modified potassium silicate-skin-feeling emulsion, 0.5-2 parts of organic microspheres, and 2.2-6.3 parts of additives;

[0007] The modified potassium silicate-skin-feel emulsion is composed of a skin-feel emulsion, potassium silicate, and a silane coupling agent.

[0008] Furthermore, by weight, the water-based single-component matte self-drying skin-feel wall varnish comprises the following components: 13.05 parts water, 81.45 parts modified potassium silicate-skin-feel emulsion, 1.25 parts organic microspheres, and 4.25 parts additives.

[0009] Furthermore, the weight ratio of the skin-feeling emulsion, potassium silicate, and silane coupling agent is 160:20:1.

[0010] Furthermore, the skin-feeling emulsion is a polyurethane dispersion, and the potassium silicate has a modulus of 3.5-4.0.

[0011] Further, the organic microspheres are silicone microspheres.

[0012] Further, the water-based single-component full-matt self-drying skin-feeling wall varnish further comprises, in parts by weight, 0.2-0.6 parts of a bactericidal and mildew-proof agent, 0.5-1.2 parts of an anti-freezing agent, 0.5-1.5 parts of a thickening agent, and 1-3 parts of a film-forming aid.

[0013] Further, the thickening agent is ASE-60 of Dow Chemical; the film-forming aid comprises C-12 and OE400 in a weight ratio of 1:1; and the bactericidal and mildew-proof agent is selected from at least one of Kathon, BIT, 631 and MBS5050.

[0014] In a second aspect, the present application provides a preparation method of the water-based single-component full-matt self-drying skin-feeling wall varnish according to any one of the first aspect, and the preparation method comprises the following steps:

[0015] Mixing the skin-feeling emulsion, the potassium silicate and the silane coupling agent to obtain a modified potassium silicate-skin-feeling emulsion;

[0016] Mixing the modified potassium silicate-skin-feeling emulsion and the remaining components in the water-based single-component full-matt self-drying skin-feeling wall varnish to obtain the water-based single-component full-matt self-drying skin-feeling wall varnish.

[0017] Compared with the prior art, the above technical solution provided by the embodiments of the present application has at least the following advantages:

[0018] The embodiments of the present application provide a water-based single-component full-matt self-drying skin-feeling wall varnish and a preparation method thereof. The present application introduces a modified potassium silicate-skin-feeling emulsion to prepare a water-based single-component full-matt self-drying skin-feeling artistic wall varnish, which effectively solves the problems of poor skin feeling and high gloss of the existing single-component skin-feeling varnish. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0021] Figure 1 A flowchart of a preparation method of a water-based single-component full-matt self-drying skin-feeling wall varnish provided by the embodiments of the present application. DETAILED DESCRIPTION

[0022] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application can be purchased from the market or prepared by existing methods.

[0024] On the one hand, very few coatings on the market have skin feel effect, and even if some have, they are two-component or need UV / curing operation, which is very complicated and difficult to use on the wall. Even if the single-component skin feel emulsion is abandoned due to poor performance, or has good performance but poor skin feel, it is difficult to have all the performances at the same time.

[0025] On the other hand, the common matte varnish on the market has the phenomenon of whitening due to the use of matte powder, or has the problem of difficult construction due to the use of some extinction curing agents. Even so, it is difficult to make the gloss at each gloss angle very low.

[0026] In view of the above problems, the inventors have found that: 1. If a simple high molecular emulsion (styrene-acrylic, pure acrylic, and silicone-acrylic) is used, a continuous film will be formed during the film forming process of the emulsion, thereby reducing the effect of skin feel fluff. Therefore, in order to make a single-component coating with skin feel fluff effect, a small molecular structure inorganic film-forming potassium silicate is needed. The skin feel emulsion is modified by adding inorganic potassium silicate, so that it has good performance without losing the effect of skin feel. 2. The matte effect is achieved by matching organic silica microspheres and using alkali swelling to increase the strong thixotropy of the paint, and the film forming speed of different film forming aids is different, thereby forming micro "wrinkles", so that the paint film achieves full matte effect.

[0027] To solve the above problems, the core technical concept of the present application at least includes: preparing a premixed solution, adding a part of potassium silicate and skin feel emulsion under sufficient stirring to form modified potassium silicate-skin feel emulsion with silane coupling agent, and finally mixing uniformly with water, alkali swelling thickening agent, organic microspheres, antifreeze, bactericidal preservative to obtain a water-based single-component full-matte self-drying skin feel artistic wall varnish.

[0028] The technical solutions provided by the present application are as follows:

[0029] In a first aspect, the present application provides a water-based single-component full-matte self-drying skin-feeling wall varnish, which comprises, in parts by weight, 1.2-24.9 parts of water, 72.4-90.5 parts of modified potassium silicate-skin-feeling emulsion, 0.5-2 parts of organic microspheres, and 2.2-6.3 parts of auxiliary agent.

[0030] The modified potassium silicate-skin-feeling emulsion is composed of skin-feeling emulsion, potassium silicate, and silane coupling agent.

[0031] In some embodiments, the water-based single-component full-matte self-drying skin-feeling wall varnish comprises, in parts by weight, 13.05 parts of water, 81.45 parts of modified potassium silicate-skin-feeling emulsion, 1.25 parts of organic microspheres, and 4.25 parts of auxiliary agent.

[0032] In some embodiments, the weight ratio of the skin-feeling emulsion, potassium silicate, and silane coupling agent is 160:20:1.

[0033] In some embodiments, the skin-feeling emulsion is a polyurethane dispersion, preferably PD-804 of Star; and the modulus of the potassium silicate is 3.5-4.0, preferably K100 of Shanghai Aorun Chemical Industry Co., Ltd.

[0034] In some embodiments, the organic microspheres are silicone microspheres, preferably 3100 of Foshan Shierli New Material Co., Ltd.

[0035] In some embodiments, the water-based single-component full-matte self-drying skin-feeling wall varnish further comprises, in parts by weight, 0.2-0.6 parts of bactericidal and mildew-proof agent, 0.5-1.2 parts of anti-freezing agent, 0.5-1.5 parts of thickening agent, and 1-3 parts of film-forming aid; wherein the thickening agent is a pure low-shear alkali-soluble swelling thickening agent, preferably ASE-60 of Dow; the film-forming aid is a mixture of C-12 and OE400 in a ratio of 1:1; and the bactericidal and mildew-proof agent is selected from at least one of Kathon, BIT, 631, and MBS5050.

[0036] In a second aspect, based on the same inventive concept, the present application provides a preparation method of the water-based single-component full-matte self-drying skin-feeling wall varnish according to any one of the first aspect, which comprises the following steps: Figure 1 As shown in the figure, the preparation method comprises the following steps:

[0037] Mixing the skin-feeling emulsion, potassium silicate, and silane coupling agent to obtain the modified potassium silicate-skin-feeling emulsion;

[0038] Mixing the modified potassium silicate-skin-feeling emulsion and the remaining components of the water-based single-component full-matte self-drying skin-feeling wall varnish to obtain the water-based single-component full-matte self-drying skin-feeling wall varnish.

[0039] In some embodiments, for example, the above preparation method comprises the following process:

[0040] Step S1: first put 80 parts of skin-feeling emulsion, 10 parts of potassium silicate and 0.5 parts of silane coupling agent into a container, stir at 70-80℃ and 800-1200rpm for 20-30min, then prepare modified potassium silicate-skin-feeling emulsion, and place for 12h for standby;

[0041] Step S2: add 1 part of film-forming aid A and 1 part of film-forming aid B into the modified potassium silicate-skin-feeling emulsion, stir at 500-800rpm for 10-15min, and wait for the modified potassium silicate-skin-feeling emulsion to swell fully;

[0042] Step S3: add 4 parts of water, 1 part of organic microspheres, 1 part of pure low-shear ASE thickener, 0.5 parts of bactericidal and mildew-proof agent, and 1 part of antifreeze agent into the container, stir at 500-800rpm for 5-10min, and the finished product is obtained.

[0043] It should be noted that the components of the water-based single-component full-matt self-drying skin-feeling wall varnish and the preparation method thereof provided by the embodiments of the present application can be directly used or self-made by using the existing public preparation method if there is no special limitation or specific description. Meanwhile, the steps and parameters can be processed according to the existing water-based single-component full-matt self-drying skin-feeling wall varnish processing technology or directly used by using the existing equipment if there is no special limitation or specific description, and the present application document will not be described one by one.

[0044] The present application will be further described in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present application and not to limit the scope of the present application. The experimental methods in the following examples without specific conditions are generally determined according to the national standards. If there is no corresponding national standard, the international standard, the conventional condition or the condition suggested by the manufacturer is used.

[0045] The main raw material information involved in the following examples and comparative examples is as follows:

[0046] Skin-feeling emulsion: polyurethane dispersion, PD-804 from Star;

[0047] Potassium silicate: modulus 3.5-4.0, K100 from Shanghai Aorun Chemical Industry Co., Ltd.;

[0048] Silane coupling agent: A-171, from Huai'an Heyuan Chemical Co., Ltd.

[0049] Organic microspheres: silicone microspheres, 3100 from Foshan Shierli New Material Co., Ltd.;

[0050] Antibacterial and mildew-proof agent: MBS5050, purchased from Guangzhou Duwei Trade Co., Ltd.

[0051] Antifreeze: Specifically, ethylene glycol, purchased from Foshan Hongchuan New Material Co., Ltd.

[0052] Thickening agent: Pure low shear alkali swelling thickening agent, ASE-60 purchased from Dow.

[0053] Film-forming aid A: C-12, purchased from Qilu Ushinman Fine Chemical Co., Ltd.

[0054] Film-forming aid B: OE400, purchased from Foshan Mei Ren Chemical Trade Co., Ltd.

[0055] Example 1

[0056] This example provides a water-based single-component full-matt self-drying skin-feeling wall varnish, which comprises the following components in parts by weight: water 1.2 parts, modified potassium silicate-skin-feeling emulsion 90.5 parts, organic microspheres 2 parts, antibacterial and mildew-proof agent 0.6 parts, antifreeze 1.2 parts, thickening agent 1.5 parts, film-forming aid 3 parts.

[0057] The modified potassium silicate-skin-feeling emulsion is composed of skin-feeling emulsion, potassium silicate and silane coupling agent in a weight ratio of 160:20:1, specifically 80 parts by weight of skin-feeling emulsion, 10 parts of potassium silicate and 0.5 parts of silane coupling agent.

[0058] The film-forming aid includes film-forming aid A and film-forming aid B in a weight ratio of 1:1, specifically 1.5 parts by weight of film-forming aid A and 1.5 parts by weight of film-forming aid B.

[0059] The preparation method of the above-mentioned water-based single-component full-matt self-drying skin-feeling wall varnish includes the following steps:

[0060] Step S1: First, put 80 parts of skin-feeling emulsion, 10 parts of potassium silicate and 0.5 parts of silane coupling agent into a container, stir at 75°C and 1000 rpm for 25 min, then prepare the modified potassium silicate-skin-feeling emulsion, and place it for 12 h for standby;

[0061] Step S2: Add 1.5 parts of film-forming aid A and 1.5 parts of film-forming aid B to the modified potassium silicate-skin-feeling emulsion, stir at 600 rpm for 12 min, and wait for the modified potassium silicate-skin-feeling emulsion to swell fully;

[0062] Step S3: Add 1.2 parts of water, 2 parts of organic microspheres, 1.5 parts of pure low shear ASE thickening agent, 0.6 parts of antibacterial and mildew-proof agent, and 1.2 parts of antifreeze to the container, and stir at 600 rpm for 8 min to obtain the finished product.

[0063] Example 2

[0064] The example provides a water-based single-component full-matte self-drying skin-feeling wall varnish, which comprises the following components in parts by weight: 13.05 parts of water, 81.45 parts of modified potassium silicate-skin-feeling emulsion, 1.25 parts of organic microspheres, 0.4 parts of bactericidal and mildew-proof agent, 0.85 parts of antifreeze, 1 part of thickening agent, and 2 parts of film-forming aid;

[0065] The modified potassium silicate-skin-feeling emulsion is composed of skin-feeling emulsion, potassium silicate and silane coupling agent in a weight ratio of 160:20:1, specifically 72 parts by weight of skin-feeling emulsion, 9 parts of potassium silicate and 0.45 parts of silane coupling agent.

[0066] The film-forming aid comprises film-forming aid A and film-forming aid B in a weight ratio of 1:1, specifically 1 part by weight of film-forming aid A and 1 part by weight of film-forming aid B.

[0067] The preparation method of the above-mentioned water-based single-component full-matte self-drying skin-feeling wall varnish comprises the following steps:

[0068] Step S1: first put 80 parts of skin-feeling emulsion, 10 parts of potassium silicate and 0.5 parts of silane coupling agent into a container, stir at 75°C and 1000 rpm for 25 min to prepare a modified potassium silicate-skin-feeling emulsion, and then place it for 12 h for standby use;

[0069] Step S2: add 1 part of film-forming aid A and 1 part of film-forming aid B to the modified potassium silicate-skin-feeling emulsion, and stir at 600 rpm for 12 min until the modified potassium silicate-skin-feeling emulsion is fully swollen;

[0070] Step S3: add 13.05 parts of water, 1.25 parts of organic microspheres, 1 part of pure low-shear ASE thickening agent, 0.4 parts of bactericidal and mildew-proof agent, and 0.85 parts of antifreeze into the container, and stir at 600 rpm for 8 min to obtain the finished product.

[0071] Example 3

[0072] The example provides a water-based single-component full-matte self-drying skin-feeling wall varnish, which comprises the following components in parts by weight: 24.9 parts of water, 72.4 parts of modified potassium silicate-skin-feeling emulsion, 0.5 parts of organic microspheres, 0.2 parts of bactericidal and mildew-proof agent, 0.5 parts of antifreeze, 0.5 parts of thickening agent, and 1 part of film-forming aid;

[0073] The modified potassium silicate-skin-feeling emulsion is composed of skin-feeling emulsion, potassium silicate and silane coupling agent in a weight ratio of 160:20:1, specifically 64 parts by weight of skin-feeling emulsion, 8 parts of potassium silicate and 0.4 parts of silane coupling agent.

[0074] The film forming aid includes film forming aid A and film forming aid B in a weight ratio of 1:1, specifically 0.5 parts by weight of film forming aid A and 0.5 parts by weight of film forming aid B.

[0075] The preparation method of the water-based single-component full-matte self-drying skin-feeling wall varnish includes the following steps:

[0076] Step S1: First, put 64 parts of skin-feeling emulsion, 8 parts of potassium silicate, and 0.4 parts of silane coupling agent into a container, stir at 75°C and 1000 rpm for 25 minutes, then prepare modified potassium silicate-skin-feeling emulsion, and place it for 12 hours for standby;

[0077] Step S2: Add 0.5 parts of film forming aid A and 0.5 parts of film forming aid B to the modified potassium silicate-skin-feeling emulsion, stir at 600 rpm for 12 minutes, and wait for the modified potassium silicate-skin-feeling emulsion to swell fully;

[0078] Step S3: Add 24.9 parts of water, 0.5 parts of organic microspheres, 0.5 parts of pure low-shear ASE thickening agent, 0.2 parts of bactericidal and mildew-proof agent, and 0.5 parts of anti-freezing agent into the container, stir at 600 rpm for 8 minutes, and the finished product is obtained.

[0079] Comparative Example 1

[0080] This example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and its preparation method, which is compared with Example 1, and the only difference is that in Comparative Example 1, no potassium silicate and silane coupling agent are added in Step S1, and all are replaced with skin-feeling emulsion.

[0081] Comparative Example 2

[0082] This example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and its preparation method, which is compared with Example 1, and the only difference is that in Comparative Example 2, the potassium silicate and silane coupling agent in Step S1 are replaced with high molecular emulsion BASF338.

[0083] Comparative Example 3

[0084] This example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and its preparation method, which is compared with Example 1, and the only difference is that in Comparative Example 3, the film forming aid B in Step S2 is replaced with film forming aid A.

[0085] Comparative Example 4

[0086] This example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and its preparation method, which is compared with Example 1, and the only difference is that in Comparative Example 4, the film forming aid A in Step S2 is replaced with film forming aid B.

[0087] Comparative Example 5

[0088] The example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and a preparation method thereof. Compared with Example 1, the only difference is that Comparative Example 5 is based on Example 1, and no organic microspheres are added in step S3, but water is used instead.

[0089] Comparative Example 6

[0090] The example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and a preparation method thereof. Compared with Example 1, the only difference is that Comparative Example 6 is based on Example 1, and no organic microspheres are added in step S3, but an equal amount of matte powder is used instead.

[0091] Comparative Example 7

[0092] The example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and a preparation method thereof. Compared with Example 1, the only difference is that Comparative Example 7 is based on Example 1, and no ASE thickening agent is added in step S3, but an equal amount of water is used instead.

[0093] Comparative Example 8

[0094] The example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and a preparation method thereof. Compared with Example 1, the only difference is that Comparative Example 8 is based on Example 1, and no ASE thickening agent or organic microspheres are added in step S3, but water is used instead.

[0095] Comparative Example 9

[0096] The example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and a preparation method thereof. Compared with Example 1, the only difference is that Comparative Example 9 is based on Example 1, and the amount of potassium silicate is increased from 10 parts to 20 parts in step S1.

[0097] Comparative Example 10

[0098] The example provides a water-based single-component full-matte self-drying skin-feeling wall varnish and a preparation method thereof. Compared with Example 1, the only difference is that Comparative Example 9 is based on Example 1, and the amount of potassium silicate is decreased from 10 parts to 5 parts in step S1.

[0099] Test Example

[0100] The example tests the performance of the water-based single-component full-matte self-drying skin-feeling wall varnish obtained in the above examples and comparative examples. The test results of Comparative Examples 1-10 are shown in Table 1, and the test results of Example 2 and Example 3 are shown in Table 2.

[0101] Table 1

[0102]

[0103]

[0104] Table 2

[0105]

[0106] From Table 1, it can be seen that:

[0107] From the comparison of Example 1 and Comparative Example 1, it can be found that, due to the introduction of potassium silicate and silane coupling agent, the skin-feeling emulsion of Example 1 has enhanced adhesion and water resistance.

[0108] From Comparative Example 2, it can be found that, due to the use of high-molecular crosslinked emulsion, the hand feeling of the skin-feeling emulsion is seriously affected, although the performance is improved.

[0109] From Comparative Example 3 and Comparative Example 4, it can be found that, when the film-forming aids are used alone, the film-forming efficiency of the film-forming aids is the same, the drying speed is uniform, the relative flatness of the paint film is good; when the film-forming aids are mixed, the film-forming rates of A and B are different, the drying speed of the paint film is not uniform, thus leading to uneven stress, forming microscopic "wrinkles", enhancing diffuse reflection, and thus reducing gloss. In combination with Comparative Example 5, Comparative Example 7 and Comparative Example 8, it can be found that, when these materials are used together, the three gloss angles can be reduced to below 5°, and a full-matt effect is formed. However, the use of matt powder will cause application blooming and a decrease in water resistance.

[0110] From Comparative Example 9 / 10, it can be found that, when the amount of potassium silicate is too much, the small particles formed will affect the softness of the paint film, and when the amount is too little, the performance of the paint film cannot be effectively improved.

[0111] Various embodiments of the present application can exist in a range of forms; it should be understood that the description in a range form is merely for the convenience and brevity, and should not be understood as a rigid limitation on the scope of the present application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single values within the range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single values within the range, such as 1, 2, 3, 4, 5 and 6, regardless of the range. In addition, whenever a numerical range is indicated in this text, it means that any cited number (fraction or integer) within the indicated range is included.

[0112] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and it is intended to embrace all such modifications and changes that fall within the scope of the application. Accordingly, the application is not to be restricted in scope to the specific embodiments disclosed herein but is to be accorded the full scope that the principles and novel features request appropriately granted.

Claims

1. A water-based, single-component, fully matte, self-drying, skin-feel wall varnish, characterized in that, By weight, the water-based single-component matte self-drying skin-feel wall varnish comprises the following components: 1.2-24.9 parts water, 72.4-90.5 parts modified potassium silicate-skin-feel emulsion, 0.5-2 parts organic microspheres, and 2.2-6.3 parts additives; The additives, by weight, include 0.5-1.5 parts thickener and 1-3 parts film-forming aid; the thickener is Dow's ASE-60; the film-forming aid includes C-12 and OE400 in a weight ratio of 1:

1. The modified potassium silicate-skin-feel emulsion is composed of a skin-feel emulsion, potassium silicate, and a silane coupling agent; the weight ratio of the skin-feel emulsion, potassium silicate, and silane coupling agent is 160:20:

1.

2. The water-based single-component, fully matte, self-drying, skin-feel wall varnish according to claim 1, characterized in that, By weight, the water-based single-component matte self-drying skin-feel wall varnish comprises the following components: 13.05 parts water, 81.45 parts modified potassium silicate-skin-feel emulsion, 1.25 parts organic microspheres, and 4.25 parts additives.

3. The water-based single-component, fully matte, self-drying, skin-feel wall varnish according to claim 1, characterized in that, The skin-feel emulsion is a polyurethane dispersion, and the potassium silicate has a modulus of 3.5-4.

0.

4. The water-based single-component, fully matte, self-drying, skin-feel wall varnish according to claim 1, characterized in that, The organic microspheres are organosilicon microspheres.

5. The water-based single-component, fully matte, self-drying, skin-feel wall varnish according to any one of claims 1 to 4, characterized in that, The additives also include, by weight, 0.2-0.6 parts of bactericide and mildew inhibitor and 0.5-1.2 parts of antifreeze.

6. The water-based single-component, fully matte, self-drying, skin-feel wall varnish according to claim 5, characterized in that, The bactericide and antifungal agent is selected from at least one of Kathon, BIT, 631 and MBS5050.

7. A method for preparing a water-based, single-component, fully matte, self-drying, skin-feel wall varnish according to any one of claims 1 to 6, characterized in that, The preparation method includes the following steps: A skin-feel emulsion, potassium silicate, and a silane coupling agent are mixed to obtain a modified potassium silicate-skin-feel emulsion. The modified potassium silicate-skin-feel emulsion and the remaining components of the water-based single-component fully matte self-drying skin-feel wall varnish are mixed to obtain the water-based single-component fully matte self-drying skin-feel wall varnish.

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