Organic silicon self-cleaning ceramic colored stone coating and preparation method thereof

Abstract

The invention provides an organic silicon self-cleaning ceramic colored stone coating and a preparation method thereof. The organic silicon self-cleaning ceramic colored stone coating is prepared from the following raw materials: ceramic colored stone mother liquor and aggregate, and the weight ratio of the ceramic colored stone mother liquor to the aggregate is 1: (1-3); the ceramic colored stone mother liquor is prepared from the following raw materials in parts by weight: 5-7 parts of a pH regulator, 15-20 parts of magnesium hydroxide, 3-5 parts of a fire retardant, 20-30 parts of a high-molecular polymerization waterproof agent and 5-10 parts of a surfactant. According to the invention, the magnesium hydroxide, the high-molecular polymerization waterproof agent, the surfactant, the organic silicon resin and the waterproof emulsion are added, so that the hydrophobic property of the surface of the coating after construction can be improved. Under the action of rainwater, a thin water film can be formed on the surface of the coating of the ceramic colored stone coating, and the water film can dissolve and take away stains and dust on the surface of the coating, so that the self-cleaning function is realized.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic color stone coatings, and in particular to an organosilicon self-cleaning ceramic color stone coating and a preparation method thereof. Background Art

[0002] Ceramic stone paint is a high-grade building decoration material. This paint combines the advantages of traditional paint with the characteristics of new materials to present a unique decorative effect. Ceramic stone paint not only has excellent physical properties, such as waterproof, anti-fouling, weather resistance, etc., but is also favored for its unique color and texture. It can present a texture and color similar to natural stone while retaining a modern feel. Therefore, it is widely used in the interior and exterior wall painting of villas, self-built buildings, communities, office buildings, venues, commercial buildings and other buildings.

[0003] Ceramic stone paint itself does not have the ability to automatically decompose stains and remove dust like some self-cleaning paints. Therefore, during long-term use, the surface of ceramic stone paint may accumulate certain dust, dirt and other pollutants, affecting the overall aesthetics of the wall. Manual cleaning is very time-consuming and laborious, so there is an urgent need for a ceramic stone paint with a self-cleaning function. Summary of the invention

[0004] The present invention provides an organosilicon self-cleaning ceramic colored stone coating and a preparation method thereof. Under the action of rainwater, a thin water film is formed on the coating surface of the organosilicon self-cleaning ceramic colored stone coating, and the water film can dissolve and take away stains and dust on the coating surface, thereby realizing a self-cleaning function.

[0005] According to one aspect of the present invention, a self-cleaning organic silicon ceramic paint is provided, wherein the raw materials include the following materials: ceramic stone mother liquor, aggregate, and the weight ratio of ceramic stone mother liquor to aggregate is 1:(1-3); calculated by weight, the raw materials used to prepare the ceramic stone mother liquor include: 5-7 parts of pH regulator, 15-20 parts of magnesium hydroxide, 3-5 parts of fire retardant, 20-30 parts of polymer waterproof agent, and 5-10 parts of surfactant. In the process of preparing the organic silicon self-cleaning ceramic stone paint, the ceramic stone mother liquor is added, and the components of the ceramic stone mother liquor include magnesium hydroxide, which is an inorganic compound with certain waterproof performance. Adding magnesium hydroxide to the ceramic stone mother liquor can improve the waterproof performance of the coating and prevent moisture from penetrating into the wall.

[0006] The waterproof emulsion comprises a copolymer of silicone and acrylate, wherein the weight ratio of silicone to acrylate is 5:4.

[0007] Preferably, calculated by weight, the raw materials used to prepare the aggregate include: 20-50 parts of silicone resin, 50-70 parts of ceramic colored sand, 30-50 parts of sintered sand, 25-35 parts of waterproof emulsion, 10-20 parts of colorant, and 30-50 parts of high-temperature sintering agent.

[0008] Preferably, the polymer waterproofing agent is prepared from an acrylate polymer and a polyvinyl alcohol polymer, and the weight ratio of the acrylate polymer to the polyvinyl alcohol polymer is 3:(2-4). The components of the ceramic colored stone mother liquor include a polymer waterproofing agent, which is prepared by mixing an acrylate polymer and a polyvinyl alcohol polymer. The acrylate polymer can provide the film-forming property and adhesion of the coating, and has a certain waterproof effect; the polyvinyl alcohol polymer can enhance the adhesion and flexibility of the coating, and can also improve the waterproof performance. The polymer waterproofing agent prepared by mixing an acrylate polymer and a polyvinyl alcohol polymer can further improve the waterproof effect of the coating.

[0009] Preferably, the surfactant is prepared from fatty acid glyceride, fatty acid sorbitan, and polysorbate, and the weight ratio of fatty acid glyceride, fatty acid sorbitan, and polysorbate is 1:(1-3):(2-4). The surfactant can improve the hydrophobicity of the coating surface to prevent water from entering the coating.

[0010] Preferably, the silicone resin is made by copolymerization of dichlorosilane and polysiloxane, and the weight ratio of dichlorosilane to polysiloxane is (2-4): (1-3). Among them, dichlorosilane, as a base material of the coating, can give the coating excellent oxidation resistance, UV resistance and light retention. Polysiloxane is often used as a functional additive or base material in coatings due to its good weather resistance, temperature resistance and electrical insulation. The silicone resin prepared by mixing dichlorosilane and polysiloxane can greatly improve the waterproof performance of the coating.

[0011] Preferably, the waterproof emulsion is copolymerized by siloxane and acrylate, and the weight ratio of siloxane to acrylate is (5-7): (4-9).

[0012] According to another aspect of the present invention, a method for preparing a silicone self-cleaning ceramic colored stone coating is provided, comprising the following steps:

[0013] S1. The magnesium hydroxide, fire retardant, polymer waterproofing agent, surfactant mixed, then added pH adjuster, let stand, to obtain ceramic stone mother liquor;

[0014] S2. Pour the sintering sand and the high-temperature sintering agent into a sintering furnace for sintering to obtain a mixture A;

[0015] S3. Pour the ceramic colored sand and high temperature sintering agent into a sintering furnace for sintering to obtain a mixture B;

[0016] S4. Mixing mixture A, mixture B, silicone resin, waterproof emulsion and colorant to obtain aggregate;

[0017] S5. Pour the ceramic color stone mother liquor and aggregate into a vacuum heating mixer, mix and stir at a stirring rate of 200 to 250 rpm to obtain an organosilicon self-cleaning ceramic color stone coating.

[0018] Preferably, in step S1, the stirring temperature is 300-500° C., the stirring time is 3-5 h, and the stirring speed is 200-300 rpm.

[0019] Preferably, the sintering temperature in step S2 is 1500-2000° C., and the sintering time is 5-10 hours.

[0020] Preferably, the sintering temperature in step S3 is 1000-1500° C., and the sintering time is 4-6 hours.

[0021] Preferably, the vacuum stirring temperature in step S5 is 180-220° C., and the stirring time is 2-3 h.

[0022] The beneficial effects of the present invention are as follows: by adding magnesium hydroxide, polymer waterproofing agent, surfactant, silicone resin and waterproof emulsion, the hydrophobic property of the coating surface after construction is improved, so that in rainy weather, under the action of rainwater, a thin water film is formed on the coating surface of the ceramic color stone coating. This water film can dissolve and take away the stains and dust on the coating surface, thereby realizing the self-cleaning function. In this way, the cleaning cost of the building exterior wall is reduced, saving time and labor. DETAILED DESCRIPTION

[0023] The following is a further clear and complete description of the technical features in the technical solution provided by the present invention in conjunction with the specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] This embodiment provides a self-cleaning organic silicon ceramic colored stone coating, and the preparation method of the coating comprises the following steps:

[0026] S1 15 parts by weight of magnesium hydroxide, 3 parts by weight of fire retardant, 20 parts by weight of polymer waterproofing agent, 5 parts by weight of surfactant were mixed, and then 5 parts by weight of pH adjusting agent was added and allowed to stand to obtain ceramic stone mother liquor;

[0027] S2. 30 parts by weight of sintering sand and 10 parts by weight of a high-temperature sintering agent were poured into a sintering furnace and sintered to obtain a mixture A;

[0028] S3. 50 parts by weight of ceramic colored sand and 20 parts by weight of a high-temperature sintering agent were poured into a sintering furnace and sintered to obtain a mixture B;

[0029] S4. The mixture A, the mixture B, 20 parts by weight of a silicone resin, 25 parts by weight of a waterproof emulsion, and 10 parts by weight of a colorant are mixed to obtain an aggregate;

[0030] S5. Pour the ceramic color stone mother liquor and aggregate into a vacuum heating mixer, mix and stir at a stirring rate of 200 rpm to obtain a silicone self-cleaning ceramic color stone coating.

[0031] Wherein, the weight ratio of the ceramic colored stone mother liquor to the aggregate is 1:1;

[0032] The polymer waterproofing agent is prepared from an acrylic polymer and a polyvinyl alcohol polymer, and the weight ratio of the acrylic polymer to the polyvinyl alcohol polymer is 3:2.

[0033] The surfactant is prepared from fatty acid glyceride, fatty acid sorbitan and polysorbate, and the weight ratio of fatty acid glyceride, fatty acid sorbitan and polysorbate is 1:1:2;

[0034] The organic silicone resin is prepared by copolymerization of dichlorosilane and polysiloxane, and the weight ratio of dichlorosilane to polysiloxane is 2:1;

[0035] Among them, the waterproof emulsion is copolymerized by silicone and acrylate, and the weight ratio of silicone and acrylate is 5:4.

[0036] Example 2

[0037] This embodiment provides a self-cleaning organic silicon ceramic colored stone coating, and the preparation method of the coating comprises the following steps:

[0038] S1. 17 parts by weight of magnesium hydroxide, 4 parts by weight of fire retardant, 25 parts by weight of polymer waterproofing agent, 7 parts by weight of surfactant were mixed, and then 6 parts by weight of pH adjusting agent were added and allowed to stand to obtain ceramic stone mother liquor;

[0039] S2. 40 parts by weight of sintering sand and 15 parts by weight of a high-temperature sintering agent were poured into a sintering furnace and sintered to obtain a mixture A;

[0040] S3. 60 parts by weight of ceramic colored sand and 25 parts by weight of a high-temperature sintering agent were poured into a sintering furnace and sintered to obtain a mixture B;

[0041] S4. The mixture A, the mixture B, 35 parts by weight of a silicone resin, 30 parts by weight of a waterproof emulsion, and 15 parts by weight of a colorant were mixed to obtain an aggregate;

[0042] S5. Pour the ceramic color stone mother liquor and aggregate into a vacuum heating mixer, mix and stir at a stirring rate of 225 rpm to obtain a silicone self-cleaning ceramic color stone coating.

[0043] Wherein, the weight ratio of the ceramic colored stone mother liquor to the aggregate is 1:2;

[0044] The polymer waterproofing agent is prepared from an acrylic acid ester polymer and a polyvinyl alcohol polymer, and the weight ratio of the acrylic acid ester polymer to the polyvinyl alcohol polymer is 3:3;

[0045] The surfactant is prepared from fatty acid glyceride, fatty acid sorbitan and polysorbate, and the weight ratio of fatty acid glyceride, fatty acid sorbitan and polysorbate is 1:2:3;

[0046] The organic silicone resin is prepared by copolymerization of dichlorosilane and polysiloxane, and the weight ratio of dichlorosilane to polysiloxane is 3:2;

[0047] Among them, the waterproof emulsion is copolymerized by silicone and acrylate, and the weight ratio of silicone and acrylate is 6:7.

[0048] Example 3

[0049] This embodiment provides a self-cleaning organic silicon ceramic colored stone coating, and the preparation method of the coating comprises the following steps:

[0050] S1. 20 parts by weight of magnesium hydroxide, 5 parts by weight of fire retardant, 30 parts by weight of polymer waterproofing agent, 10 parts by weight of surfactant were mixed, and then 7 parts by weight of pH adjusting agent was added and allowed to stand to obtain ceramic stone mother liquor;

[0051] S2. 50 parts by weight of sintering sand and 20 parts by weight of a high-temperature sintering agent were poured into a sintering furnace and sintered to obtain a mixture A;

[0052] S3. 70 parts by weight of ceramic colored sand and 30 parts by weight of a high-temperature sintering agent were poured into a sintering furnace and sintered to obtain a mixture B;

[0053] S4. The mixture A, the mixture B, 50 parts by weight of a silicone resin, 35 parts by weight of a waterproof emulsion, and 20 parts by weight of a colorant are mixed to obtain an aggregate;

[0054] S5. Pour the ceramic color stone mother liquor and aggregate into a vacuum heating mixer, mix and stir at a stirring rate of 250 rpm to obtain a silicone self-cleaning ceramic color stone coating.

[0055] Wherein, the weight ratio of the ceramic colored stone mother liquor to the aggregate is 1:3;

[0056] The polymer waterproofing agent is prepared from an acrylic polymer and a polyvinyl alcohol polymer, and the weight ratio of the acrylic polymer to the polyvinyl alcohol polymer is 3:4;

[0057] The surfactant is prepared from fatty acid glyceride, fatty acid sorbitan and polysorbate, and the weight ratio of fatty acid glyceride, fatty acid sorbitan and polysorbate is 1:3:4;

[0058] The organic silicone resin is prepared by copolymerization of dichlorosilane and polysiloxane, and the weight ratio of dichlorosilane to polysiloxane is 4:3;

[0059] Among them, the waterproof emulsion is copolymerized by silicone and acrylate, and the weight ratio of silicone and acrylate is 7:9.

[0060] Example 4

[0061] This embodiment provides an organosilicon self-cleaning ceramic colored stone coating, and compared with the embodiment 1, the difference in structure is that the raw materials used to prepare the high molecular weight polymer waterproofing agent are only prepared from acrylic acid ester polymers. In addition to the above differences, the materials, formula ratios and preparation operations used in this embodiment are strictly consistent with those in the embodiment 1.

[0062] Example 5

[0063] This embodiment provides an organosilicon self-cleaning ceramic colored stone coating, and compared with the embodiment 1, the difference in structure is that the raw materials used to prepare the surfactant are prepared from fatty acid glyceride and fatty acid sorbitan, and the mass ratio of fatty acid glyceride to fatty acid sorbitan is 1:2. Except for the above differences, the materials, formula ratios and preparation operations used in this embodiment are strictly consistent with those in the embodiment 1.

[0064] Example 6

[0065] This embodiment provides an organic silicon self-cleaning ceramic colored stone coating, and compared with the embodiment 1, the difference in structure is that the raw material used for the organic silicon resin is only prepared from dichlorosilane. In addition to the above differences, the materials, formula ratios and preparation operations used in this embodiment are strictly consistent with those in the embodiment 1.

[0066] Example 7

[0067] This embodiment provides an organosilicon self-cleaning ceramic colored stone paint, and compared with the embodiment 1, the difference in structure is that the raw materials used for the waterproof emulsion are only prepared from acrylic acid ester. In addition to the above differences, the materials, formula ratios and preparation operations used in this embodiment are strictly consistent with those in the embodiment 1.

[0068] Comparative Example 1

[0069] This comparative example provides a ceramic colored stone paint commonly found on the market.

[0070] Test Case

[0071] 1. Test subjects

[0072] In this test example, the organosilicon self-cleaning ceramic colored stone coatings provided in Examples 1 to 7 and the ceramic colored stone coatings commonly found on the market provided in Comparative Example 1 were used as test objects to conduct relevant performance tests.

[0073] 2. Test content

[0074] (1 Water flow scouring test. Before the test, apply it on the wall and leave it for one month, and prevent it from being scour by rain during this period. After one month, splash water to simulate rain scouring and observe the cleaning condition.

[0075] 3. Test results

[0076] Table 1 Related performance test results of silicone self-cleaning ceramic stone coating

[0077]

[0078] The relevant performance test results of the organosilicon self-cleaning pottery and colored stone coatings provided in Examples 1 to 7 and the pottery and colored stone coating provided in Comparative Example 1 are shown in Table 1.

[0079] Embodiments 1 to 3: In these embodiments, after the coatings were washed with water for 20 minutes, the dust on the surface was completely removed and no water stains were left. This shows that these coatings have good self-cleaning properties and can effectively remove dust accumulated on the surface through rainwater washing. Embodiments 4 to 7: Compared with embodiments 1 to 3, the coatings in embodiments 4 to 7 partially adhere to the wall after the dust is mixed with water under the same water flow conditions, showing poor self-cleaning performance. This may be due to changes in the formula of polymer waterproofing agents, surfactants, silicone resins or waterproof emulsions. Comparative Example 1: Common ceramic stone coatings on the market also show the phenomenon of dust being mixed with water and adhering to the wall, indicating that its self-cleaning performance is not as good as the coatings in embodiments 1 to 3. In the present invention, by adding magnesium hydroxide, polymer waterproofing agents, surfactants, silicone resins and waterproof emulsions, the hydrophobic properties of the surface of the coating after construction can be improved. Under the action of rainwater, a thin water film will form on the coating surface of ceramic stone paint. This water film can dissolve and take away stains and dust on the coating surface, thereby realizing the self-cleaning function.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the technical solutions of the present invention can be modified or equivalently replaced, but these modifications or replacements are all within the protection scope of the present invention.

Claims

1. A silicone self-cleaning ceramic stone paint, characterized in that: The raw materials include the following materials: pottery stone mother liquor and aggregate, and the weight ratio of the pottery stone mother liquor to the aggregate is 1:(1-3); Calculated by weight, the raw materials used to prepare the ceramic colored stone mother liquor include: 5 to 7 parts of pH regulator, 15 to 20 parts of magnesium hydroxide, 3 to 5 parts of fire retardant, 20 to 30 parts of polymer waterproofing agent, and 5 to 10 parts of surfactant.

2. The organosilicon self-cleaning ceramic colored stone paint as claimed in claim 1, characterized in that: Calculated by weight, the raw materials used to prepare the aggregate include: 20 to 50 parts of silicone resin, 50 to 70 parts of ceramic colored sand, 30 to 50 parts of sintered sand, 25 to 35 parts of waterproof emulsion, 10 to 20 parts of colorant, and 30 to 50 parts of high-temperature sintering agent.

3. The organosilicon self-cleaning ceramic colored stone paint as claimed in claim 1, characterized in that: The polymer waterproofing agent is prepared from an acrylic ester polymer and a polyvinyl alcohol polymer, and the weight ratio of the acrylic ester polymer to the polyvinyl alcohol polymer is 3:(2-4).

4. The organosilicon self-cleaning ceramic colored stone paint according to claim 1, characterized in that: The surfactant is prepared from fatty acid glyceride, fatty acid sorbitan and polysorbate, and the weight ratio of the fatty acid glyceride, the fatty acid sorbitan and the polysorbate is 1:(1-3):(2-4).

5. The organosilicon self-cleaning ceramic colored stone paint as claimed in claim 2, characterized in that: The organic silicon resin is prepared by copolymerization of dichlorosilane and polysiloxane, and the weight ratio of the dichlorosilane to the polysiloxane is (2-4): (1-3).

6. The organosilicon self-cleaning ceramic colored stone paint as claimed in claim 2, characterized in that: The waterproof emulsion is copolymerized by siloxane and acrylate, and the weight ratio of the siloxane to the acrylate is (5-7): (4-9).

7. A method for preparing the organosilicon self-cleaning ceramic colored stone coating according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. The magnesium hydroxide, the fire retardant, the polymer waterproofing agent, the surfactant are mixed and stirred, and then the pH adjusting agent is added and allowed to stand to obtain a ceramic stone mother liquor; S2. Pour the sintering sand and the high temperature sintering agent into a sintering furnace for sintering to obtain a mixture A; S3. Pour the ceramic colored sand and the high temperature sintering agent into a sintering furnace for sintering to obtain a mixture B; S4. Mixing the mixture A, the mixture B, the silicone resin, the waterproof emulsion, and the colorant to obtain an aggregate; S5. Pour the ceramic color stone mother liquor and the aggregate into a vacuum heating mixer, mix and stir at a stirring rate of 200 to 250 rpm to obtain an organosilicon self-cleaning ceramic color stone coating.

8. The preparation method according to claim 7, characterized in that: The sintering temperature in step S2 is 1500-2000° C., and the sintering time is 5-10 hours.

9. The preparation method according to claim 7, characterized in that: The sintering temperature in step S3 is 1000-1500° C., and the sintering time is 4-6 hours.

10. The preparation method according to claim 7, characterized in that: The vacuum stirring temperature in step S5 is 180-220° C., and the stirring time is 2-3 hours.

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