A method for preparing rammed earth straw artistic coating

Abstract

This invention provides a method for preparing rammed earth straw art coating. The preparation method includes the following steps: S1. Mixing rammed earth, cement, quartz sand, plant resin, lime slurry, water, microporous powder, and vermiculite powder, stirring evenly at a temperature of 25-30℃, continuously adding straw during the stirring process until the mixture becomes a putty paste, obtaining a base material; S2. Mixing a dispersant, thickener, and white inorganic pigment, stirring evenly at a temperature of 15-20℃, sequentially adding UV-resistant powder and antioxidant powder during the stirring process, stirring evenly, obtaining an additive; S3. Mixing the base material from step S1 and the additive from step S2, stirring evenly, sieving, heating, cooling, and allowing to stand, obtaining the rammed earth straw art coating. The preparation process of this invention, by adding UV-resistant powder and antioxidant powder, effectively enhances the coating's UV resistance and antioxidant capacity. The combined use of these two can significantly improve the weather resistance of the rammed earth straw art coating, preventing accelerated aging due to UV radiation, and enabling it to maintain its original color and performance for a long time.

Description

Technical Field

[0001] This invention relates to the field of artistic coatings, and in particular to a method for preparing rammed earth straw artistic coatings. Background Technology

[0002] Artistic paint is a new type of wall decoration art material, possibly originating in Europe. Artistic paint can be applied to create various textures, achieving a wallpaper-like decorative effect. Some special artistic paints can even create a three-dimensional effect, making the artistic decoration effect more prominent. At the same time, artistic paint is easy to maintain, is not sensitive to the humidity and dryness of the space, and there is no need to worry about mold, peeling, or other problems. Its biggest advantage is its longer lifespan.

[0003] A major problem faced in the preparation and application of rammed earth and straw artistic coatings is accelerated aging after ultraviolet (UV) exposure. Since both rammed earth and straw are natural materials, their UV resistance is relatively weak. Prolonged exposure to strong sunlight can easily damage the pigment molecules in the coating, leading to uneven color and even fading. This not only affects the decorative effect of the coating but also shortens its lifespan. Therefore, improving the UV resistance of rammed earth and straw artistic coatings and preventing accelerated aging due to UV exposure is an urgent problem to be solved. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides a method for preparing rammed earth straw artistic coating.

[0005] This invention provides a method for preparing rammed earth straw artistic coating, comprising the following steps:

[0006] S1. Mix rammed earth, cement, quartz sand, plant resin, lime slurry, water, microporous powder and vermiculite powder, and stir evenly at a temperature of 25-30℃. During the stirring process, add straw continuously until the mixture becomes a putty paste to obtain the base material.

[0007] S2. Mix the dispersant, thickener and white inorganic pigment, and stir evenly at a temperature of 15-20℃. During the stirring process, add the UV-resistant powder and the antioxidant powder in sequence, and stir evenly to obtain the additive.

[0008] S3. Mix the base material described in step S1 and the additive described in step S2, stir evenly, sieve, heat, cool and let stand to obtain rammed earth straw art paint.

[0009] Preferably, by weight, the raw materials used to prepare the base material in step S1 include 300-450 parts of rammed earth, 100-200 parts of straw, 155-195 parts of cement, 150-190 parts of quartz sand, 100-150 parts of plant resin, 50-80 parts of lime slurry, 500-1000 parts of water, 150-180 parts of microporous powder, and 100-120 parts of vermiculite powder.

[0010] Preferably, by weight, the raw materials used to prepare the additive in step S2 include 10-15 parts of UV-resistant powder, 20-25 parts of antioxidant powder, 2-3.5 parts of dispersant, 0.5-1.5 parts of thickener, and 150-200 parts of white inorganic pigment.

[0011] Preferably, by weight ratio, the base material in step S3:additive = (60-40):(40-60).

[0012] Preferably, the raw materials used to prepare the antioxidant powder include butylated hydroxytoluene and hindered phenolic antioxidant 168, and the weight ratio of butylated hydroxytoluene to hindered phenolic antioxidant 168 is (1-1.5):(0.5-1.2).

[0013] Preferably, the raw materials used to prepare the UV-resistant powder include titanium dioxide powder, benzotriazoles and zinc oxide powder, and the weight ratio of the titanium dioxide powder, the benzotriazoles and the zinc oxide powder is (1-2.5):(0.5-0.9):(1-1.5).

[0014] The preparation process of this invention effectively enhances the coating's UV resistance and antioxidant capacity by adding UV-resistant and antioxidant powders. The combined use of these two materials significantly improves the weather resistance of the rammed earth straw art coating, preventing accelerated aging due to UV radiation and allowing it to maintain its original color and performance for a longer period.

[0015] Preferably, the length of the straw stalk in step S1 is 1-3 cm.

[0016] Preferably, the particle size of the quartz sand in step S1 is 10-30 mm.

[0017] Preferably, the lime slurry in step S1 is ground to a fineness of 10-20 μm.

[0018] Preferably, the settling time in step S3 is 3-5 days.

[0019] The preparation process of this invention ensures the stability and consistency of coating quality by controlling the length of the straw, the particle size of the quartz sand, the grinding fineness of the lime slurry, and the settling time. Detailed Implementation

[0020] The technical features of the technical solution provided by the present invention will be further clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1

[0022] This embodiment provides a method for preparing rammed earth straw artistic coating, including the following steps:

[0023] S1. Mix rammed earth, cement, quartz sand, plant resin, lime slurry, water, microporous powder and vermiculite powder, and stir evenly at a temperature of 25°C. During the stirring process, continuously add straw until the mixture becomes a putty paste to obtain the base material.

[0024] S2. Mix the dispersant, thickener and white inorganic pigment, stir evenly at 15°C, add the UV-resistant powder and antioxidant powder in sequence during the stirring process, and stir evenly to obtain the additive;

[0025] S3. Mix the base material described in step S1 and the additive described in step S2, stir evenly, sieve, heat, cool and let stand to obtain rammed earth straw art paint.

[0026] The raw materials used to prepare the base material in step S1, by weight, include 300 parts of rammed earth, 100 parts of rice straw, 155 parts of cement, 150 parts of quartz sand, 100 parts of plant resin, 50 parts of lime slurry, 500 parts of water, 150 parts of porous powder, and 100 parts of vermiculite powder.

[0027] The raw materials used to prepare the additive in step S2, by weight, include 10 parts of UV-resistant powder, 20 parts of antioxidant powder, 2 parts of dispersant, 0.5 parts of thickener, and 150 parts of white inorganic pigment.

[0028] In this case, the ratio of base material to additives in step S3 is 60:40 by weight.

[0029] The raw materials used to prepare the antioxidant powder include butylated hydroxytoluene and hindered phenolic antioxidant 168, and the weight ratio of butylated hydroxytoluene to hindered phenolic antioxidant 168 is 1:0.5.

[0030] The raw materials used to prepare the UV-resistant powder include titanium dioxide powder, benzotriazoles, and zinc oxide powder, and the weight ratio of the titanium dioxide powder, the benzotriazoles, and the zinc oxide powder is 1:0.5:1.

[0031] In step S1, the length of the straw stalk is 1 cm.

[0032] The quartz sand in step S1 has a particle size of 10 mm.

[0033] The grinding fineness of the lime slurry in step S1 is 10 μm.

[0034] The settling time in step S3 is 3 days.

[0035] Example 2

[0036] This embodiment provides a method for preparing rammed earth straw artistic coating, including the following steps:

[0037] S1. Mix rammed earth, cement, quartz sand, plant resin, lime slurry, water, microporous powder and vermiculite powder, and stir evenly at a temperature of 28℃. During the stirring process, add straw continuously until the mixture becomes a putty paste to obtain the base material.

[0038] S2. Mix the dispersant, thickener and white inorganic pigment, stir evenly at 18°C, add the UV-resistant powder and antioxidant powder in sequence during the stirring process, and stir evenly to obtain the additive;

[0039] S3. Mix the base material described in step S1 and the additive described in step S2, stir evenly, sieve, heat, cool and let stand to obtain rammed earth straw art paint.

[0040] The raw materials used to prepare the base material in step S1, by weight, include 375 parts rammed earth, 150 parts straw, 175 parts cement, 170 parts quartz sand, 125 parts plant resin, 65 parts lime slurry, 750 parts water, 165 parts porous powder, and 110 parts vermiculite powder.

[0041] The raw materials used to prepare the additive in step S2, by weight, include 13 parts of UV-resistant powder, 23 parts of antioxidant powder, 2.8 parts of dispersant, 1 part of thickener, and 175 parts of white inorganic pigment.

[0042] In this case, the ratio of base material to additives in step S3 is 50:50 by weight.

[0043] The raw materials used to prepare the antioxidant powder include butylated hydroxytoluene and hindered phenolic antioxidant 168, and the weight ratio of butylated hydroxytoluene to hindered phenolic antioxidant 168 is 1.25:0.85.

[0044] The raw materials used to prepare the UV-resistant powder include titanium dioxide powder, benzotriazoles, and zinc oxide powder, and the weight ratio of the titanium dioxide powder, the benzotriazoles, and the zinc oxide powder is 1.75:0.7:1.25.

[0045] In step S1, the length of the straw stalk is 2cm.

[0046] The quartz sand in step S1 has a particle size of 20 mm.

[0047] The grinding fineness of the lime slurry in step S1 is 15 μm.

[0048] The settling time in step S3 is 4 days.

[0049] Example 3

[0050] This embodiment provides a method for preparing rammed earth straw artistic coating, including the following steps:

[0051] S1. Mix rammed earth, cement, quartz sand, plant resin, lime slurry, water, microporous powder and vermiculite powder, and stir evenly at a temperature of 30℃. During the stirring process, add straw continuously until the mixture becomes a putty paste to obtain the base material.

[0052] S2. Mix the dispersant, thickener and white inorganic pigment, stir evenly at 20°C, add the UV-resistant powder and antioxidant powder in sequence during the stirring process, and stir evenly to obtain the additive;

[0053] S3. Mix the base material described in step S1 and the additive described in step S2, stir evenly, sieve, heat, cool and let stand to obtain rammed earth straw art paint.

[0054] The raw materials used to prepare the base material in step S1, by weight, include 450 parts of rammed earth, 200 parts of straw, 195 parts of cement, 190 parts of quartz sand, 150 parts of plant resin, 80 parts of lime slurry, 1000 parts of water, 180 parts of microporous powder, and 120 parts of vermiculite powder.

[0055] The raw materials used to prepare the additive in step S2, by weight, include 15 parts of UV-resistant powder, 25 parts of antioxidant powder, 3.5 parts of dispersant, 1.5 parts of thickener, and 200 parts of white inorganic pigment.

[0056] In this case, the ratio of base material to additives in step S3 is 40:60 by weight.

[0057] The raw materials used to prepare the antioxidant powder include butylated hydroxytoluene and hindered phenolic antioxidant 168, and the weight ratio of butylated hydroxytoluene to hindered phenolic antioxidant 168 is 1.5:1.2.

[0058] The raw materials used to prepare the UV-resistant powder include titanium dioxide powder, benzotriazoles, and zinc oxide powder, and the weight ratio of the titanium dioxide powder, the benzotriazoles, and the zinc oxide powder is 2.5:0.9:1.5.

[0059] In step S1, the length of the straw stalk is 3cm.

[0060] The quartz sand in step S1 has a particle size of 30 mm.

[0061] The grinding fineness of the lime slurry in step S1 is 20 μm.

[0062] The settling time in step S3 is 5 days.

[0063] Example 4

[0064] This embodiment provides a method for preparing rammed earth straw art coating. Compared with Example 1, the difference in composition is that only butylated hydroxytoluene is used in the raw materials used to prepare the antioxidant powder.

[0065] Apart from the differences mentioned above, the materials, formulation ratios, and preparation operations used in this embodiment are strictly consistent with those in Example 1.

[0066] Example 5

[0067] This embodiment provides a method for preparing rammed earth straw art coating. Compared with Embodiment 1, the difference in composition is that only titanium dioxide powder is used in the raw materials used to prepare the UV-resistant powder.

[0068] Apart from the differences mentioned above, the materials, formulation ratios, and preparation operations used in this embodiment are strictly consistent with those in Example 1.

[0069] Test Case

[0070] The rammed earth straw art coatings prepared in Examples 1-5 and a sample of ordinary rammed earth straw art coating were selected for coating tests. The rammed earth straw art coatings prepared in Examples 1-5 and a sample of ordinary rammed earth straw art coating were respectively applied to the sample and allowed to dry and cure. The sample was then placed under a xenon arc lamp aging tester to simulate sunlight exposure. The final test results are shown in Table 1 below:

[0071] Table 1. Test results of relevant performance of rammed earth straw artistic coating.

[0072]

[0073] In a 2-day exposure test, the coatings of Examples 1-3 all showed slight peeling, while Examples 4, 5, and the ordinary rammed earth straw art coating showed moderate peeling. This indicates that the combination and ratio of UV-resistant and antioxidant powders in the formulations of Examples 1-3 may have a positive impact on the abrasion resistance of the coatings. In a 7-week exposure test, the coatings of Examples 1-3 still showed only slight peeling, while the coatings of Examples 4 and 5 showed increased abrasion to moderate peeling, comparable to the ordinary rammed earth straw art coating. This further confirms the importance of the combination of UV-resistant and antioxidant powders, and the positive impact of their optimized ratio on the long-term abrasion resistance of the coatings.

[0074] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention, but such modifications or substitutions are all within the scope of protection of the present invention.

Claims

1. A method for preparing rammed earth straw artistic coating, characterized in that, The preparation method includes the following steps: S1. Mix rammed earth, cement, quartz sand, plant resin, lime slurry, water, microporous powder and vermiculite powder, and stir evenly at a temperature of 25-30℃. During the stirring process, add straw continuously until the mixture becomes a putty paste to obtain the base material. S2. Mix the dispersant, thickener and white inorganic pigment, and stir evenly at a temperature of 15-20℃. During the stirring process, add the UV-resistant powder and the antioxidant powder in sequence, and stir evenly to obtain the additive. S3. Mix the base material described in step S1 and the additive described in step S2, stir evenly, sieve, heat, cool and let stand to obtain rammed earth straw art paint. By weight, the raw materials used to prepare the base material in step S1 include 300-450 parts of rammed earth, 100-200 parts of straw, 155-195 parts of cement, 150-190 parts of quartz sand, 100-150 parts of plant resin, 50-80 parts of lime slurry, 500-1000 parts of water, 150-180 parts of microporous powder, and 100-120 parts of vermiculite powder. The raw materials used to prepare the additive in step S2, by weight, include 10-15 parts of UV-resistant powder, 20-25 parts of antioxidant powder, 2-3.5 parts of dispersant, 0.5-1.5 parts of thickener, and 150-200 parts of white inorganic pigment. The raw materials used to prepare the antioxidant powder include butylated hydroxytoluene and hindered phenolic antioxidant 168, and the weight ratio of butylated hydroxytoluene to hindered phenolic antioxidant 168 is (1-1.5):(0.5-1.2). The raw materials used to prepare the UV-resistant powder include titanium dioxide powder, benzotriazoles and zinc oxide powder, and the weight ratio of the titanium dioxide powder, the benzotriazoles and the zinc oxide powder is (1-2.5):(0.5-0.9):(1-1.5).

2. The preparation method according to claim 1, characterized in that, By weight ratio, the base material in step S3: additives = (60-40): (40-60).

3. The preparation method according to claim 1, characterized in that, The length of the straw stalks mentioned in step S1 is 1-3cm.

4. The preparation method according to claim 1, characterized in that, The particle size of the quartz sand in step S1 is 10mm-30mm.

5. The preparation method according to claim 1, characterized in that, The fineness of the lime slurry in step S1 is 10-20 μm.

6. The preparation method according to claim 1, characterized in that, The settling time in step S3 is 3-5 days.

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