Cement-based self-leveling dry-mixed mortar with insect prevention effect and preparation method of cement-based self-leveling dry-mixed mortar

Abstract

The invention belongs to the technical field of building materials, and particularly relates to cement-based self-leveling dry-mixed mortar with an insect prevention effect and a preparation method of the cement-based self-leveling dry-mixed mortar. The dry-mixed mortar is prepared from the following raw materials in parts by weight: 300 parts of cement, 450-550 parts of fine sand, 0.5-2 parts of an antibacterial agent, 0.3-2 parts of a mildew preventive, 20-40 parts of an expanding agent, 0.01-7 parts of a thickening time control agent, 0.5-2 parts of a defoaming agent and 0.5-2 parts of anti-cracking fibers. The preparation method comprises the following steps: S1, adding cement and fine sand into a stirrer, and uniformly mixing to obtain a mixture I; s2, an antibacterial agent and a mildew preventive are evenly sprayed on the anti-crack fibers, then the anti-crack fibers are rolled back and forth for 5-10 min with a 500 kg roller, and the antibacterial agent and the mildew preventive are embedded into gaps of the anti-crack fibers; and S3, adding the anti-crack fibers embedded with the antibacterial agent and the mildew preventive, the expanding agent, the thickening time control agent and the defoaming agent into a stirrer, and jointly stirring with the mixture I to obtain the cement-based self-leveling dry-mixed mortar with the insect prevention effect.

Description

Technical Field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a cement-based self-leveling dry mortar with insect-proof effect and a preparation method thereof. Background Art

[0002] Self-leveling mortar materials have the characteristics of very good fluidity, self-leveling ability, low shrinkage, high compressive strength, etc. They are widely used in indoor floors of public buildings such as residences, hospitals, supermarkets, and industrial floor leveling projects.

[0003] At present, the self-leveling mortar materials used in China are generally divided into organic and inorganic types. Organic self-leveling materials are mainly epoxy resin self-leveling materials, which have good construction performance, but are relatively expensive, have high construction requirements, and have poor wear resistance. Inorganic self-leveling materials are divided into gypsum-based self-leveling materials and cement-based self-leveling materials. Gypsum-based self-leveling materials have poor water resistance and their acidity has a rusting effect on iron products, so their application range is limited. Cement-based self-leveling materials can be divided into two types: single-component and two-component. Two-component cement-based self-leveling materials mainly add polymer emulsion as an independent second component, which is mixed with the first component in a certain proportion when used. Its disadvantage is that it is inconvenient to transport. Single-component cement-based self-leveling materials are dry-mixed mortars, which are suitable for transportation and construction, but the cost is relatively high.

[0004] Since self-leveling dry-mix mortar has the advantages of scientific formula, high efficiency and environmental protection, it is widely used in the field of floor leveling and dust-free treatment. However, people find in daily life that the ground is damp and easy to breed bacteria and mold, which is harmful to people's health. For this reason, we propose a cement-based self-leveling dry-mix mortar with insect-proof effect and a preparation method thereof. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention can be achieved through the following technical solutions:

[0006] A cement-based self-leveling dry-mix mortar with an insect-proof effect. The raw materials for preparing the dry-mix mortar include, by weight: 300 parts of cement, 450-550 parts of fine sand, 0.5-2 parts of antibacterial agent, 0.3-2 parts of mildew inhibitor, 20-40 parts of expander, 0.01-7 parts of setting regulator, 0.5-2 parts of defoamer, and 0.5-2 parts of anti-cracking fiber; wherein the antibacterial agent is a mixture of lavender powder, camphor wood powder and toad grass powder, and the mass ratio of the lavender powder, camphor wood powder and toad grass powder is (3-5):1:(5-7); the mildew inhibitor is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1.

[0007] Furthermore, the cement is a mixture of high alumina cement and silicate cement, and the mass ratio of the high alumina cement to the silicate cement is (1-2):(2-3).

[0008] Furthermore, the fine sand is a mixture of dried river sand and quartz sand, the mass ratio of the dried river sand to the quartz sand is (4-5):1; the particle size of the fine sand is 250 mesh.

[0009] Furthermore, the expansion agent is commercially available calcium sulfoaluminate UEA expansion agent or calcium sulfate AEA expansion agent.

[0010] Furthermore, the coagulant is a combination of one or more of sodium gluconate, sodium pyrophosphate, sodium tripolyphosphate, sodium sulfate, potassium fluoride, calcium saccharide, calcium chloride, calcium formate, and lithium carbonate.

[0011] Furthermore, the defoaming agent is a common commercially available P803 powdered defoaming agent.

[0012] Furthermore, the anti-cracking fiber is a needle-punched non-woven fabric woven from bamboo fiber; the specification of the anti-cracking fiber is a length of ≤9 mm.

[0013] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0014] S1, adding cement and fine sand into a mixer and mixing them evenly to obtain a mixture 1;

[0015] S2, sprinkle the antibacterial agent and the antifungal agent evenly on the anti-cracking fiber, and then use a 500kg roller to roll back and forth on the anti-cracking fiber for 5-10 minutes to embed the antibacterial agent and the antifungal agent into the gaps of the anti-cracking fiber;

[0016] S3. Add the anti-cracking fiber embedded with antibacterial agent and anti-mildew agent, expansion agent, setting regulator and defoaming agent into the mixer and stir together with the mixed material to obtain cement-based self-leveling dry powder mortar with insect-proof effect.

[0017] Beneficial effects of the present invention:

[0018] 1. The present invention adopts a mixture of lavender powder, camphor wood powder and toad grass powder as an antibacterial agent, and its antibacterial and insect repellent performance is significantly higher than that of a single antibacterial agent;

[0019] 2. The present invention uses a mixture of copper sulfate and sodium fluoride as a mildew inhibitor, and its mildew prevention effect is significantly higher than that of a single mildew inhibitor;

[0020] 3. The present invention adds anti-cracking fibers during the preparation of dry-mix mortar, which significantly improves the impact resistance of the dry-mix mortar. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] A cement-based self-leveling dry-mix mortar with an insect-proof effect. The raw materials for preparing the dry-mix mortar include, by weight: 300 parts of cement, 450-550 parts of fine sand, 0.5-2 parts of antibacterial agent, 0.3-2 parts of mildew-proof agent, 20-40 parts of expansion agent, 0.01-7 parts of setting regulator, 0.5-2 parts of defoaming agent, and 0.5-2 parts of anti-cracking fiber.

[0023] The antibacterial agent is a mixture of lavender powder, camphor wood powder and toad grass powder, and the mass ratio of the lavender powder, camphor wood powder and toad grass powder is (3-5):1:(5-7);

[0024] The preparation method of lavender powder is as follows: treating lavender flowers with sulfuric acid vapor with a mass concentration of 10% under a pressure of 11.2 kPa for 30 minutes, irradiating with far infrared rays at a temperature of 70°C for 30 seconds, and then milling with rutin equivalent to 4% of its weight and 0.8% of stigmasterol in a closed ball mill with a ball-to-material ratio of 6 for 2 hours to obtain lavender flower pollen; drying lavender leaves in a vacuum oven at a temperature of 81°C to a water content of less than 3%, grinding them into powder, and then ultrasonically dispersing them in a limonene aqueous solution with a mass concentration of 6% for 20 minutes, concentrating and drying to obtain lavender leaf powder; mixing the lavender flower pollen and lavender leaf powder together to obtain lavender powder.

[0025] The preparation method of the camphor wood powder is as follows: wash the camphor wood, dry it, saw it into short pieces, dry it, and then grind it to obtain the camphor wood powder.

[0026] The preparation method of toad grass powder is as follows: treating toad grass flowers with sulfuric acid vapor with a mass concentration of 10% under a pressure of 10.8 kPa for 25 minutes, irradiating with far infrared rays at a temperature of 65°C for 20 seconds, and then mixing with rutin and stigmasterol equivalent to 6% by weight in a closed ball mill at a ball-to-material ratio of 6 for 2 hours to obtain toad grass flower powder; drying toad grass leaves in a vacuum oven at a temperature of 81°C to a water content of less than 3%, grinding into powder, and then ultrasonically dispersing in a limonene aqueous solution with a mass concentration of 6% for 20 minutes, concentrating and drying to obtain toad grass leaf powder; mixing toad grass flower pollen and toad grass leaf powder together to obtain toad grass powder.

[0027] The mildew inhibitor is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1.

[0028] Preferably, the cement is a mixture of high alumina cement and silicate cement, and the mass ratio of the high alumina cement to the silicate cement is (1-2):(2-3).

[0029] Preferably, the fine sand is a mixture of dried river sand and quartz sand, the mass ratio of dried river sand to quartz sand is (4-5):1; the particle size of the fine sand is 250 mesh.

[0030] Preferably, the expansion agent is commercially available calcium sulfoaluminate UEA expansion agent or calcium sulfate AEA expansion agent.

[0031] Preferably, the coagulant is a combination of one or more of sodium gluconate, sodium pyrophosphate, sodium tripolyphosphate, sodium sulfate, potassium fluoride, calcium saccharide, calcium chloride, calcium formate, and lithium carbonate.

[0032] Preferably, the defoaming agent is a common commercially available P803 powdered defoaming agent.

[0033] Preferably, the anti-cracking fiber is a needle-punched non-woven fabric woven from bamboo fiber; the specification of the anti-cracking fiber is a length of ≤9 mm.

[0034] Example 1

[0035] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0036] S1. Add 300 parts of cement and 450 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 1:2; and the mass ratio of dried river sand to quartz sand in the fine sand is 4:1.

[0037] S2, take 0.5 parts of antibacterial agent, 0.3 parts of mildew preventer and 0.5 parts of anti-cracking fiber, sprinkle the antibacterial agent and mildew preventer evenly on the anti-cracking fiber, and then use a 500kg roller to roll back and forth on the anti-cracking fiber for 10 minutes to embed the antibacterial agent and mildew preventer into the gaps of the anti-cracking fiber; the mass ratio of lavender powder, camphor wood powder and toad grass powder in the antibacterial agent is 3:1:5; the mildew preventer is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1;

[0038] S3. Add the anti-cracking fiber embedded with antibacterial agent and mildewproof agent obtained in step S2, 20 parts of calcium sulfoaluminate UEA expansion agent, 1 part of sodium gluconate and 0.5 parts of P803 powdered defoaming agent into a mixer and stir together with the mixture to obtain a cement-based self-leveling dry mortar with insect-proof effect.

[0039] Example 2

[0040] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0041] S1. Add 300 parts of cement and 500 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 1:3; and the mass ratio of dried river sand to quartz sand in the fine sand is 5:1.

[0042] S2, take 2 parts of antibacterial agent, 2 parts of mildew preventer and 2 parts of anti-cracking fiber, sprinkle the antibacterial agent and mildew preventer evenly on the anti-cracking fiber, and then use a 500kg roller to roll back and forth on the anti-cracking fiber for 10 minutes to embed the antibacterial agent and mildew preventer into the gaps of the anti-cracking fiber; the mass ratio of lavender powder, camphor wood powder and toad grass powder in the antibacterial agent is 5:1:5; the mildew preventer is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1;

[0043] S3. Add the anti-cracking fiber embedded with antibacterial agent and mildewproof agent obtained in step S2 into a mixer together with 30 parts of calcium sulfoaluminate UEA expansion agent, 5 parts of sodium gluconate and 1 part of P803 powdered defoaming agent and the mixture to uniformly obtain cement-based self-leveling dry mortar with insect-proof effect.

[0044] Example 3

[0045] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0046] S1. Add 300 parts of cement and 550 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 2:3; and the mass ratio of dried river sand to quartz sand in the fine sand is 4:1.

[0047] S2, take 1.5 parts of antibacterial agent, 1.3 parts of mildew preventer and 2 parts of anti-cracking fiber, sprinkle the antibacterial agent and mildew preventer evenly on the anti-cracking fiber, and then use a 500kg roller to roll back and forth on the anti-cracking fiber for 10 minutes to embed the antibacterial agent and mildew preventer into the gaps of the anti-cracking fiber; the mass ratio of lavender powder, camphor wood powder and toad grass powder in the antibacterial agent is 5:1:7; the mildew preventer is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1;

[0048] S3. Add the anti-cracking fiber embedded with antibacterial agent and mildewproof agent obtained in step S2 into a mixer together with 30 parts of calcium sulfoaluminate UEA expansion agent, 3 parts of sodium gluconate and 1 part of P803 powdered defoaming agent and mix them together with the mixture to obtain a cement-based self-leveling dry mortar with insect-proof effect.

[0049] Comparative Example 1

[0050] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0051] S1. Add 300 parts of cement and 450 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 1:2; and the mass ratio of dried river sand to quartz sand in the fine sand is 4:1.

[0052] S2, take 0.5 parts of antibacterial agent, 0.3 parts of mildew preventer and 0.5 parts of anti-cracking fiber, sprinkle the antibacterial agent and mildew preventer evenly on the anti-cracking fiber, and then use a 500kg roller to roll back and forth on the anti-cracking fiber for 10 minutes, so that the antibacterial agent and mildew preventer are embedded in the gaps of the anti-cracking fiber; the antibacterial agent contains only lavender powder, and lacks camphor wood powder and toad grass powder; the mildew preventer is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1;

[0053] S3. Add the anti-cracking fiber embedded with antibacterial agent and mildewproof agent obtained in step S2, 20 parts of calcium sulfoaluminate UEA expansion agent, 1 part of sodium gluconate and 0.5 parts of P803 powdered defoaming agent into a mixer and stir together with the mixture to obtain a cement-based self-leveling dry mortar with insect-proof effect.

[0054] Comparative Example 2

[0055] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0056] S1. Add 300 parts of cement and 450 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 1:2; and the mass ratio of dried river sand to quartz sand in the fine sand is 4:1.

[0057] S2, take 0.5 parts of antibacterial agent, 0.3 parts of mildew preventer and 0.5 parts of anti-cracking fiber, sprinkle the antibacterial agent and mildew preventer evenly on the anti-cracking fiber, and then use a 500kg roller to roll back and forth on the anti-cracking fiber for 10 minutes to embed the antibacterial agent and mildew preventer into the gaps of the anti-cracking fiber; the antibacterial agent contains only camphor wood powder, and lacks lavender powder and toad grass powder; the mildew preventer is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1;

[0058] S3. Add the anti-cracking fiber embedded with antibacterial agent and mildewproof agent obtained in step S2, 20 parts of calcium sulfoaluminate UEA expansion agent, 1 part of sodium gluconate and 0.5 parts of P803 powdered defoaming agent into a mixer and stir together with the mixture to obtain a cement-based self-leveling dry mortar with insect-proof effect.

[0059] Comparative Example 3

[0060] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0061] S1. Add 300 parts of cement and 450 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 1:2; and the mass ratio of dried river sand to quartz sand in the fine sand is 4:1.

[0062] S2, take 0.5 parts of antibacterial agent, 0.3 parts of mildew preventer and 0.5 parts of anti-cracking fiber, sprinkle the antibacterial agent and mildew preventer evenly on the anti-cracking fiber, and then use a 500kg roller to roll back and forth on the anti-cracking fiber for 10 minutes, so that the antibacterial agent and mildew preventer are embedded in the gaps of the anti-cracking fiber; the antibacterial agent contains only toad grass powder, lacks lavender powder and camphor wood powder; the mildew preventer is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1;

[0063] S3. Add the anti-cracking fiber embedded with antibacterial agent and mildewproof agent obtained in step S2, 20 parts of calcium sulfoaluminate UEA expansion agent, 1 part of sodium gluconate and 0.5 parts of P803 powdered defoaming agent into a mixer and stir together with the mixture to obtain a cement-based self-leveling dry mortar with insect-proof effect.

[0064] Comparative Example 4

[0065] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0066] S1. Add 300 parts of cement and 450 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 1:2; and the mass ratio of dried river sand to quartz sand in the fine sand is 4:1.

[0067] S2, take 0.5 parts of antibacterial agent, 0.3 parts of mildew preventer and 0.5 parts of anti-cracking fiber, sprinkle the antibacterial agent and mildew preventer evenly on the anti-cracking fiber, and then roll the anti-cracking fiber back and forth with a 500kg roller for 10 minutes to embed the antibacterial agent and mildew preventer into the gaps of the anti-cracking fiber; the mass ratio of lavender powder, camphor wood powder and toad grass powder in the antibacterial agent is 3:1:5; the mildew preventer contains only copper sulfate and does not contain sodium fluoride;

[0068] S3. Add the anti-cracking fiber embedded with antibacterial agent and mildewproof agent obtained in step S2, 20 parts of calcium sulfoaluminate UEA expansion agent, 1 part of sodium gluconate and 0.5 parts of P803 powdered defoaming agent into a mixer and stir together with the mixture to obtain a cement-based self-leveling dry mortar with insect-proof effect.

[0069] Comparative Example 5

[0070] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0071] S1. Add 300 parts of cement and 450 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 1:2; and the mass ratio of dried river sand to quartz sand in the fine sand is 4:1.

[0072] S2, take 0.5 parts of antibacterial agent, 0.3 parts of mildew preventer and 0.5 parts of anti-cracking fiber, sprinkle the antibacterial agent and mildew preventer evenly on the anti-cracking fiber, and then roll the anti-cracking fiber back and forth with a 500kg roller for 10 minutes to embed the antibacterial agent and mildew preventer into the gaps of the anti-cracking fiber; the mass ratio of lavender powder, camphor wood powder and toad grass powder in the antibacterial agent is 3:1:5; the mildew preventer contains only sodium fluoride and no copper sulfate;

[0073] S3. Add the anti-cracking fiber embedded with antibacterial agent and mildewproof agent obtained in step S2, 20 parts of calcium sulfoaluminate UEA expansion agent, 1 part of sodium gluconate and 0.5 parts of P803 powdered defoaming agent into a mixer and stir together with the mixture to obtain a cement-based self-leveling dry mortar with insect-proof effect.

[0074] Comparative Example 6

[0075] A method for preparing a cement-based self-leveling dry-mix mortar with an insect-proof effect, the method comprising the following steps:

[0076] S1. Add 300 parts of cement and 450 parts of fine sand into a mixer and mix them evenly to obtain a mixture 1; wherein the mass ratio of high alumina cement to silicate cement in the cement is 1:2; and the mass ratio of dried river sand to quartz sand in the fine sand is 4:1.

[0077] S2, take 0.5 parts of antibacterial agent and 0.3 parts of antifungal agent and mix them evenly to obtain mixture 2; the mass ratio of lavender powder, camphor wood powder and toad grass powder in the antibacterial agent is 3:1:5; the antifungal agent is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:1;

[0078] S3. Add the mixture 2 obtained in step S2, 20 parts of calcium sulfoaluminate UEA expansion agent, 1 part of sodium gluconate and 0.5 parts of P803 powdered defoamer into a mixer and stir together with the mixture 1 to obtain a cement-based self-leveling dry mortar with insect-proof effect.

[0079] Performance Testing:

[0080] The performance test of the cement-based self-leveling dry-mixed mortar with insect-proof effect prepared in Examples 1 to 3 and Comparative Examples 1 to 6 was carried out, mainly to determine the moth rate, mildew condition and impact resistance of the cement-based self-leveling dry-mixed mortar with insect-proof effect after application and drying. The specific test results are shown in Table 1:

[0081] Table 1

[0082]

[0083] Combining the addition ratios of the components in Examples 1 to 3 and Comparative Examples 1 to 6 and the data in Table 1, it can be seen that:

[0084] 1. The antibacterial and insect repellent properties of the mixture of lavender powder, camphor wood powder and toad grass powder in Example 1 are significantly higher than those of the unmixed antibacterial agents in Comparative Examples 1 to 3;

[0085] 2. The present invention adopts a mixture of copper sulfate and sodium fluoride as a mildew inhibitor, and its mildew prevention effect is significantly higher than that of a single mildew inhibitor.

[0086] 3. The present invention adds anti-cracking fibers during the preparation of dry-mix mortar, which significantly improves the impact resistance of the dry-mix mortar.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0088] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A cement-based self-leveling dry mortar with insect-proof effect, characterized in that: The raw materials for preparing the dry-mix mortar include, by weight: 300 parts of cement, 450-550 parts of fine sand, 0.5-2 parts of antibacterial agent, 0.3-2 parts of mildewproof agent, 20-40 parts of expansion agent, 0.01-7 parts of setting agent, 0.5-2 parts of defoaming agent, and 0.5-2 parts of anti-cracking fiber; The antibacterial agent is a mixture of lavender powder, camphor wood powder and toad grass powder, and the mass ratio of the lavender powder, camphor wood powder and toad grass powder is (3-5):1:(5-7); The mildew inhibitor is a mixture of copper sulfate and sodium fluoride, and the mass ratio of copper sulfate to sodium fluoride is 1:

1.

2. The cement-based self-leveling dry mortar with insect-proof effect according to claim 1, characterized in that: The cement is a mixture of high-alumina cement and silicate cement, and the mass ratio of the high-alumina cement to the silicate cement is (1-2):(2-3).

3. The cement-based self-leveling dry mortar with insect-proof effect according to claim 1, characterized in that: The fine sand is a mixture of dried river sand and quartz sand, the mass ratio of the dried river sand to the quartz sand is (4-5):1; the particle size of the fine sand is 250 mesh.

4. The cement-based self-leveling dry mortar with insect-proof effect according to claim 1, characterized in that: The expansion agent is commercially available calcium sulfoaluminate UEA expansion agent or calcium sulfate AEA expansion agent.

5. The cement-based self-leveling dry-mix mortar with insect-proof effect according to claim 1, characterized in that: The coagulant is a combination of one or more of sodium gluconate, sodium pyrophosphate, sodium tripolyphosphate, sodium sulfate, potassium fluoride, calcium saccharide, calcium chloride, calcium formate, and lithium carbonate.

6. The cement-based self-leveling dry-mix mortar with insect-proof effect according to claim 1, characterized in that: The defoamer is a common commercially available P803 powdered defoamer.

7. The cement-based self-leveling dry mortar with insect-proof effect according to claim 1, characterized in that: The anti-cracking fiber is a needle-punched non-woven fabric woven from bamboo fiber; the specification of the anti-cracking fiber is that the length is ≤9mm.

8. A method for preparing a cement-based self-leveling dry-mix mortar with insect-proof effect as claimed in any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: S1, adding cement and fine sand into a mixer and mixing them evenly to obtain a mixture 1; S2, sprinkle the antibacterial agent and the antifungal agent evenly on the anti-cracking fiber, and then use a 500kg roller to roll back and forth on the anti-cracking fiber for 5-10 minutes to embed the antibacterial agent and the antifungal agent into the gaps of the anti-cracking fiber; S3. Add the anti-cracking fiber embedded with antibacterial agent and anti-mildew agent, expansion agent, setting regulator and defoaming agent into the mixer and stir together with the mixed material to obtain cement-based self-leveling dry powder mortar with insect-proof effect.

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