Preparation method of rammed earth and straw art coating

Abstract

The invention provides a rammed earth straw art coating preparation method, which comprises: S1, mixing rammed earth, cement, quartz sand, plant resin, lime slurry, water, micro-hollow powder and vermiculite powder, uniformly stirring at a temperature of 25-30 DEG C, and continuously adding straw in the stirring process until the mixture is in a putty paste state so as to obtain a base material; s2, mixing the dispersing agent, the thickening agent and the white inorganic pigment, uniformly stirring at the temperature of 15-20 DEG C, sequentially adding the anti-ultraviolet powder and the antioxidant powder in the stirring process, and uniformly stirring to obtain an additive; s3, mixing the basic material in the step S1 and the additive in the step S2, uniformly stirring, screening, heating, cooling and standing to obtain the rammed earth straw art coating. The anti-ultraviolet powder and the anti-oxidation powder are added in the preparation process, so that the anti-ultraviolet and anti-oxidation capacities of the coating are effectively enhanced. The combined use of the rammed earth and straw art coating can significantly improve the weather resistance of the rammed earth and straw art coating, prevents the rammed earth and straw art coating from accelerated aging due to ultraviolet irradiation, and can maintain the original color and performance for a long time.

Description

Technical Field

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

[0002] Artistic paint is a new type of wall decoration art material, which may have originated in Europe. Artistic paint can be applied with various textures to achieve a wallpaper-like decorative effect. Some special artistic paints can also be applied with a three-dimensional effect, which makes the artistic decoration effect more prominent. At the same time, artistic paint is easy to maintain and is not sensitive to the humidity and dryness of the space. There is no need to worry about mold, falling off and other problems. Its biggest advantage is its longer lifespan.

[0003] One of the main problems faced by rammed earth and straw art paint during its preparation and application is the accelerated aging after exposure to ultraviolet rays. Since rammed earth and straw are both natural materials, their UV resistance is relatively weak. When exposed to strong sunlight for a long time, the pigment molecules in the paint are easily damaged, resulting in uneven color and even fading. This not only affects the decorative effect of the paint, but also shortens its service life. Therefore, how to improve the UV resistance of rammed earth and straw art paint and prevent it from accelerating aging due to ultraviolet radiation is a problem that needs to be solved urgently. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method for preparing rammed earth and straw artistic paint.

[0005] The present invention provides a method for preparing rammed earth and straw artistic paint, comprising the following steps:

[0006] S1. The rammed earth, cement, quartz sand, plant resin, lime slurry, water, micro-air powder and vermiculite powder are mixed and stirred at a temperature of 25-30 ° C. Straw is continuously added during the stirring process until the mixture is putty-like to obtain a base material;

[0007] S2. The dispersant, thickener and white inorganic pigment are mixed and stirred at a temperature of 15-20 ° C. The anti-ultraviolet powder and antioxidant powder are added sequentially during the stirring process and stirred to obtain an 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 and straw art paint.

[0009] Preferably, 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 micro-void powder, and 100-120 parts of vermiculite powder, by weight.

[0010] Preferably, the raw materials used to prepare the additive in step S2 include, by weight, 10-15 parts of anti-ultraviolet 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, in terms of weight ratio, the base material in step S3:additive=(60-40):(40-60).

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

[0013] Preferably, the raw materials for preparing the anti-ultraviolet 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 the present invention effectively enhances the anti-ultraviolet and anti-oxidation capabilities of the coating by adding anti-ultraviolet powder and anti-oxidation powder. The combined use of the two can significantly improve the weather resistance of the rammed earth straw art coating, prevent it from accelerating aging due to ultraviolet radiation, and enable it to maintain its original color and performance for a long time.

[0015] Preferably, the length of the straw stalks 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 grinding fineness of the lime slurry in step S1 is 10-20 μm.

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

[0019] The preparation process of the invention ensures the stability and consistency of the 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 standing time. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1

[0022] This embodiment provides a method for preparing rammed earth and straw artistic paint, comprising the following steps:

[0023] S1. The rammed earth, cement, quartz sand, plant resin, lime slurry, water, micro-air powder and vermiculite powder were mixed and stirred at a temperature of 25 ° C. Straw was continuously added during the stirring process until the mixture was putty paste to obtain the base material;

[0024] S2. The dispersant, thickener and white inorganic pigment were mixed and stirred at a temperature of 15 ° C. The anti-ultraviolet powder and antioxidant powder were added sequentially during the stirring process and stirred to obtain an 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 and straw art paint.

[0026] Among them, the raw materials used to prepare the base material in step S1 include 300 parts of rammed earth, 100 parts of 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 micro-void powder, and 100 parts of vermiculite powder, calculated by weight.

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

[0028] Wherein, by weight ratio, the base material in step S3:additive=60:40.

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

[0030] The raw materials used to prepare the anti-ultraviolet 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] Wherein, the length of the straw stalk in step S1 is 1 cm.

[0032] Wherein, the particle size of the quartz sand in step S1 is 10 mm.

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

[0034] Wherein, the standing time in step S3 is 3 days.

[0035] Example 2

[0036] This embodiment provides a method for preparing rammed earth and straw artistic paint, comprising the following steps:

[0037] S1. The rammed earth, cement, quartz sand, plant resin, lime slurry, water, micro-air powder and vermiculite powder were mixed and stirred at a temperature of 28 ° C. Straw was added during the stirring process until the mixture was putty paste to obtain the base material;

[0038] S2. The dispersant, thickener and white inorganic pigment were mixed and stirred at a temperature of 18 ° C. The anti-ultraviolet powder and antioxidant powder were added in sequence during the stirring process and stirred to obtain an 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 and straw art paint.

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

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

[0042] Wherein, by weight ratio, the base material in step S3: the additive = 50:50.

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

[0044] The raw materials used to prepare the anti-ultraviolet 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] Wherein, the length of the straw stalk in step S1 is 2 cm.

[0046] Wherein, the particle size of the quartz sand in step S1 is 20 mm.

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

[0048] Wherein, the standing time in step S3 is 4 days.

[0049] Example 3

[0050] This embodiment provides a method for preparing rammed earth and straw artistic paint, comprising the following steps:

[0051] S1. The rammed earth, cement, quartz sand, plant resin, lime slurry, water, micro-air powder and vermiculite powder were mixed and stirred at a temperature of 30 ° C. Straw was continuously added during the stirring process until the mixture was putty paste to obtain the base material;

[0052] S2. The dispersant, thickener and white inorganic pigment were mixed and stirred at a temperature of 20 ° C. The anti-ultraviolet powder and antioxidant powder were added sequentially during the stirring process and stirred to obtain an 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 and straw art paint.

[0054] Among them, the raw materials used to prepare the base material in step S1 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 micro-void powder, and 120 parts of vermiculite powder, calculated by weight.

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

[0056] Wherein, by weight ratio, the base material in step S3:additive=40:60.

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

[0058] The raw materials used to prepare the anti-ultraviolet 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] Wherein, the length of the straw stalk in step S1 is 3 cm.

[0060] Wherein, the particle size of the quartz sand in step S1 is 30 mm.

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

[0062] Wherein, the standing time in step S3 is 5 days.

[0063] Example 4

[0064] This embodiment provides a method for preparing rammed earth and straw artistic paint. Compared with Embodiment 1, the difference in structure is that only butylated hydroxytoluene is used in the raw materials for preparing the antioxidant powder.

[0065] Except for the above differences, the materials, formula 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 and straw artistic paint. Compared with Embodiment 1, the difference in structure is that only titanium dioxide powder is used in the raw materials for preparing the anti-ultraviolet powder.

[0068] Except for the above differences, the materials, formula 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 paint prepared in Examples 1-5 and an ordinary rammed earth straw art paint were selected for coating test. The rammed earth straw art paint prepared in Examples 1-5 and an ordinary rammed earth straw art paint were respectively coated on the sample and waited for them to dry and solidify, and the sample was placed under a xenon arc lamp aging tester for simulated sunlight exposure test, and the final test results are shown in Table 1 below:

[0071] Table 1 Test results of relevant properties of rammed earth and straw art paint

[0072]

[0073] In the test with an exposure time of 2 days, the coatings of Examples 1 to 3 all showed slight shedding, while Examples 4, 5 and ordinary rammed earth straw art paints showed moderate shedding. This shows that in the formulas of Examples 1 to 3, the combined use of anti-ultraviolet powders and antioxidant powders and their ratios may have a positive effect on the wear resistance of the coatings. In the test with an exposure time of 7 weeks, the coatings of Examples 1 to 3 still showed only slight shedding, while the degree of wear of the coatings of Examples 4 and 5 increased to moderate shedding, which is comparable to that of ordinary rammed earth straw art paints. This further confirms the importance of the combination of anti-ultraviolet powders and antioxidant powders, and the positive effect of their optimized ratios on the long-term wear resistance of the coatings.

[0074] 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 method for preparing rammed earth and straw artistic paint, characterized in that: The preparation method comprises the following steps: S1. The rammed earth, cement, quartz sand, plant resin, lime slurry, water, micro-air powder and vermiculite powder are mixed and stirred at a temperature of 25-30 ° C. Straw is continuously added during the stirring process until the mixture is putty-like to obtain a base material; S2. The dispersant, thickener and white inorganic pigment are mixed and stirred at a temperature of 15-20 ° C. The anti-ultraviolet powder and antioxidant powder are added sequentially during the stirring process and stirred to obtain an 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 and straw art paint.

2. The preparation method according to claim 1, characterized in that In parts 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 micro-void powder, and 100-120 parts of vermiculite powder.

3. The preparation method according to claim 1, characterized in that: In parts by weight, the raw materials used to prepare the additive in step S2 include 10-15 parts of anti-ultraviolet 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.

4. The preparation method according to claim 1, characterized in that: In terms of weight ratio, the base material in step S3: the additive = (60-40): (40-60).

5. The preparation method according to claims 1-4, characterized in that: The raw materials used to prepare the antioxidant powder include butylated hydroxytoluene and hindered phenol antioxidant 168, and the weight ratio of the butylated hydroxytoluene to the hindered phenol antioxidant 168 is (1-1.5): (0.5-1.2).

6. The preparation method according to claims 1-4, characterized in that: The raw materials used to prepare the anti-ultraviolet 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).

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

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

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

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

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