Production method of concrete transfer short fiber non-woven fabric, non-woven fabric and application thereof

Abstract

A method for making a concrete-transferred short-fiber nonwoven fabric comprises the following steps: firstly, the short fibers are soaked in an etching component solution to obtain etching fibers, and then microcapsules are loaded on the short fibers through a binder to obtain capsule fibers, and then the etching fibers and capsule fibers are made into nonwoven fabrics according to specific textures by a nonwoven method. When used, one side of the nonwoven fabric is brought into contact with fresh concrete, and after the alkalinity of the concrete slurry destroys the capsule wall material of the microcapsules, the capsule core material components in the microcapsules participate in the hydration reaction of the cementitious material system; and in the area in contact with the etching fibers, the cement is slowed down by the etching component to extend the setting time, and after the concrete is finally set, the fabric is peeled off, and then the concrete surface in contact with the fabric is washed with a high-pressure water gun to remove the cement slurry that has not set due to the action of the etching component. This design can not only achieve the advantages of strong durability and low operating difficulty at the same time, but also has a wide range of applications and strong adjustability.

Description

Technical Field

[0001] The invention relates to a concrete material surface patterning technology, belongs to the field of concrete surface patterning, and in particular to a method for preparing a concrete-transferred short-fiber non-woven fabric, the non-woven fabric and applications. Background Art

[0002] Concrete is a common building material, widely used in construction, roads, bridges, tunnels and other engineering fields. However, the surface of traditional concrete materials is usually monotonous and lacks decorativeness and artistic sense. In order to meet people's demand for decorative surface of building materials, various concrete material surface patterning technologies have gradually developed.

[0003] At present, concrete surface patterning technologies mainly include the following:

[0004] Electrochemical etching technology: This technology uses chemical solutions and electrochemical reactions to depict patterns on the concrete surface. Electrochemical etching technology can achieve different surface effects by controlling parameters such as solution concentration, temperature and current density;

[0005] Spraying technology: This technology is to spray pigments or texture materials on the concrete surface to form a pattern. Spraying technology can achieve more complex pattern effects, but its durability is poor and it is easily affected by the external environment;

[0006] Film pasting technology: This technology is to paste special films on the concrete surface to form different pattern effects. Film pasting technology can achieve various complex pattern effects, but the durability of the film is also poor and easily affected by the external environment;

[0007] Engraving technology: This technology uses mechanical or manual engraving to carve patterns on the concrete surface. Engraving technology can achieve very detailed pattern effects, but the process is complicated and the cost is high.

[0008] As can be seen from the above, although the existing concrete material surface patterning technology can achieve a certain degree of decorative effect, it still has the following three defects:

[0009] Durability issues: The durability of pigments and film materials in current concrete surface patterning technologies, such as spraying and film pasting, is poor and they are easily affected by external environmental factors such as oxidation, ultraviolet rays, and pollution, causing the color and pattern to lose their beauty.

[0010] Difficult to operate: Engraving technology requires professional skills and equipment, is difficult to construct, and is costly. It is also not suitable for large-scale construction. Although electrochemical etching technology can produce a variety of complex surface effects, it requires high control technology for chemical solutions and is difficult to operate.

[0011] Single effect: The current concrete surface patterning technology has a relatively single effect and can only achieve limited changes in texture, pattern and color. However, it is difficult for current technology to meet the needs of more diversified and personalized designs.

[0012] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0013] The purpose of the present invention is to overcome the defects and problems existing in the prior art that cannot simultaneously achieve high durability and low operating difficulty, and to provide a method for producing a concrete transferred short fiber non-woven fabric, a non-woven fabric and an application thereof that can simultaneously achieve high durability and low operating difficulty.

[0014] To achieve the above purpose, the technical solution of the present invention is: a method for making a concrete transfer short fiber non-woven fabric, the method comprising the following steps:

[0015] The first step is to soak the short fiber in the etching component solution, and then take out the short fiber and dry it to obtain the etched fiber, the length of which is 3mm-30mm;

[0016] The solvent of the etching component solution is water, the mass ratio of the solute to the water is 0.05%-1.0%, and the solute is any one of the following or any mixture thereof:

[0017] A solute: sugar polyol derivatives;

[0018] B solute: organic matter containing carboxylic acid groups;

[0019] C solute: phosphate;

[0020] D solute: borate;

[0021] Step 2: firstly, the four substances A, B, C and D are uniformly mixed to obtain a mixture, then water is added according to 30%-50% of the mass of the mixture, and the mixture is mixed to obtain a capsule core material, then the capsule core material is made into capsule core particles, and then the capsule wall material is wrapped on the outside of the capsule core particles to obtain a blank capsule, the capsule wall material is dissolved in an environment of pH ≥ 11, and then the blank capsule is air-dried to obtain microcapsules dispersed from each other;

[0022] The substance A is any one of sodium silicate, aluminum oxide, potassium silicate, calcium silicate, and calcium aluminum silicate, or any mixture thereof;

[0023] The second substance is any one of microcrystalline cellulose, hydroxypropyl methylcellulose, polyvinyl alcohol, and corn starch, or any mixture thereof;

[0024] The substance C is any one of Tween 80, Triton X-100, Brij35, NP-40, and CHAPS, or any mixture thereof;

[0025] The D substance is any one of methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and ethyl cellulose, or any mixture thereof;

[0026] The third step: first load the microcapsules on the short fibers through a binder to obtain capsule fibers, the length of the capsule fibers is 10mm-50mm, the mass ratio of the etched fibers and the capsule fibers is 1-5:5-9, and then the etched fibers and capsule fibers are used as raw materials and made into non-woven fabrics according to a specific texture through a non-woven method to obtain the concrete transfer short fiber non-woven fabric.

[0027] In the first step:

[0028] When solute A is used, the mass ratio of solute to water is 0.1%-1.0%;

[0029] When using solute B, the mass ratio of solute to water is 0.1%-1.0%;

[0030] When C solute is used, the mass ratio of solute to water is 0.05%-1.0%;

[0031] When solute D is used, the mass ratio of solute to water is 0.05%-1.0%.

[0032] In the second step, the weight ratio of the four substances A, B, C and D is: 30-40:15-25:3-5:1-3.

[0033] In the second step, making the core material into core particles means: making the core particles into core particles by extrusion and spheronization of the core material.

[0034] In the second step, wrapping the capsule wall material on the outside of the capsule core particle means: wrapping the capsule wall material on the outside of the capsule core particle by spraying;

[0035] The capsule wall material is a solution, and the solute is any one of polyurethane, gelatin, hydroxypropyl methylcellulose, and polyvinyl alcohol or any mixture thereof.

[0036] In the second step, microcapsules dispersed from each other are first obtained, and then microcapsules with a particle size of 1000µm-1250µm are screened out to serve as microcapsules used for loading in the third step.

[0037] A non-woven fabric is made according to the above-mentioned method for making a concrete transfer short fiber non-woven fabric, namely the concrete transfer short fiber non-woven fabric.

[0038] An application of a non-woven fabric, wherein the non-woven fabric is the above-mentioned non-woven fabric, and the application comprises the following steps: Method 1: firstly pouring freshly mixed concrete in a mold, and then covering one side of the fabric on the surface of the concrete, so that the slurry in the concrete is in contact with the etching components and microcapsules on the fabric, and after the concrete is finally set, the fabric is peeled off, and then the surface of the concrete in contact with the fabric is washed with a high-pressure water gun to remove the cement slurry that has not solidified due to the action of the etching components, so that a pattern with randomly distributed short line textures can be formed on the surface of the concrete;

[0039] Method 2: First, lay the fabric flat and fix it on the inner surface of the mold, and then pour the freshly mixed concrete into the mold. After the pouring is completed, the slurry in the concrete comes into contact with the etching components and microcapsules on the fabric. After the concrete is finally set, the template that constitutes the mold is removed, and then the fabric is peeled off. The concrete surface in contact with the fabric is rinsed with a high-pressure water gun to remove the cement slurry that has not solidified due to the etching components. A pattern with randomly distributed short lines can be formed on the concrete surface.

[0040] In the method 1, after the slurry in the concrete comes into contact with the etching components and microcapsules on the fabric, a NaOH solution with a pH of ≥11 is evenly sprayed on the surface of the fabric, and then the concrete is waited for final setting;

[0041] In the second method, after the fabric is laid flat and fixed inside the mold, a NaOH solution with a pH of ≥11 is evenly sprayed on the surface of the fabric, and then freshly mixed concrete is poured into the mold.

[0042] The time for peeling off the fabric is 1 to 12 hours after the final setting of the concrete and before the retarding effect of the etching component fails.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The present invention relates to a method for making a concrete transfer short fiber non-woven fabric, a non-woven fabric and an application thereof. First, the short fibers are immersed in an etching component solution and dried to obtain etching fibers. Then, the capsule core material is made into capsule core particles. Then, the capsule wall material is wrapped on the outside of the capsule core particles to obtain blank capsules. Then, the blank capsules are blown dry to obtain microcapsules dispersed from each other. Then, the microcapsules are loaded on short fibers (new short fibers, not etching fibers) through a binder to obtain capsule fibers. Then, the etching fibers and capsule fibers are used as raw materials and made into non-woven fabrics according to specific textures through a non-woven method to obtain the concrete transfer short fiber non-woven fabric. When used, one side of the concrete transfer short fiber non-woven fabric is first brought into contact with the surface of the fresh concrete, and the etching components and microcapsules loaded on the non-woven fabric are brought into contact with the concrete. Subsequently, the etching components penetrate into the surface layer of the concrete and delay the hydration reaction of the cement on the surface (the etching components have a delaying effect on the hydration reaction of the cement binder, and can extend the final setting time of the concrete by 2-24 hours), and form a granular frosted surface on the surface of the concrete; at the same time, the capsule wall material of the microcapsule is dissolved and broken under the action of alkali in the concrete slurry, so that the capsule core material component is in contact with the concrete and penetrates into it, and the capsule core material component undergoes an infiltration crystallization reaction with the gel material, that is, the chemical components in the capsule core material enter the surface layer of the concrete and react with the free calcium ions and water molecules in the concrete, thereby forming a dense crystalline surface structure on the concrete surface, thereby enhancing the hardness, density and durability of the concrete surface. It can be seen from the whole reaction process that not only the operating tools are simple and easy to obtain, the labor intensity is low, and the operating difficulty is reduced, but also in the non-woven process, it can be made according to a specific texture, with various patterns, and can achieve more diversified, personalized, three-dimensional surface pattern design requirements. In addition, the hydration delay reaction and the infiltration crystallization reaction have a good collaborative effect. The hydration delay reaction provides sufficient reaction time and reaction basis for the infiltration crystallization reaction, which is conducive to improving the generation effect of the crystal body, and the infiltration crystallization reaction can improve the strength and density of the frosted surface, thereby improving the decorativeness and durability of the pattern formed on the concrete surface. Therefore, the present invention can simultaneously achieve the advantages of strong durability and low operating difficulty.

[0045] 2. In the method for making a concrete transfer short fiber non-woven fabric, the non-woven fabric and its application, the solute of the etching component solution is any one of solute A, solute B, solute C and solute D. This technical feature not only enables the design to have a relatively large selection range to meet different application requirements, but also can obtain stronger adjustability, such as the application effect and application amount of each solute are different, thereby obtaining a richer patterning effect. Therefore, the present invention not only has a wide range of applications, but also has strong designability.

[0046] 3. In the method for making a concrete-transferred short-fiber nonwoven fabric, the nonwoven fabric and its application, the capsule wall material dissolves in an environment of pH ≥ 11. The design allows the capsule wall to gradually break in an alkaline environment after the microcapsules come into contact with concrete, so that the capsule core particles inside the capsule come into contact with the concrete to perform an infiltration crystallization reaction, without any external force, and is very convenient to operate. Therefore, the present invention is highly convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the line texture pattern depicted by the non-woven fabric in the present invention.

[0048] Figure 2 It is a schematic diagram of the structure of the microcapsule in the present invention. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0050] See also Figure 1 and Figure 2 A method for making a concrete transfer short fiber nonwoven fabric, the method comprising the following steps:

[0051] The first step is to soak the short fiber in the etching component solution, and then take out the short fiber and dry it to obtain the etched fiber, the length of which is 3mm-30mm;

[0052] The solvent of the etching component solution is water, the mass ratio of the solute to the water is 0.05%-1.0%, and the solute is any one of the following or any mixture thereof:

[0053] A solute: sugar polyol derivatives;

[0054] B solute: organic matter containing carboxylic acid groups;

[0055] C solute: phosphate;

[0056] D solute: borate;

[0057] Step 2: firstly, the four substances A, B, C and D are uniformly mixed to obtain a mixture, then water is added according to 30%-50% of the mass of the mixture, and the mixture is mixed to obtain a capsule core material, then the capsule core material is made into capsule core particles, and then the capsule wall material is wrapped on the outside of the capsule core particles to obtain a blank capsule, the capsule wall material is dissolved in an environment of pH ≥ 11, and then the blank capsule is air-dried to obtain microcapsules dispersed from each other;

[0058] The substance A is any one of sodium silicate, aluminum oxide, potassium silicate, calcium silicate, and calcium aluminum silicate, or any mixture thereof;

[0059] The second substance is any one of microcrystalline cellulose, hydroxypropyl methylcellulose, polyvinyl alcohol, and corn starch, or any mixture thereof;

[0060] The substance C is any one of Tween 80, Triton X-100, Brij35, NP-40, and CHAPS, or any mixture thereof;

[0061] The D substance is any one of methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and ethyl cellulose, or any mixture thereof;

[0062] The third step: first load the microcapsules on the short fibers through a binder to obtain capsule fibers, the length of the capsule fibers is 10-50 mm, the mass ratio of the etched fibers to the capsule fibers is 1-5:5-9, and then the etched fibers and capsule fibers are used as raw materials and made into non-woven fabrics according to a specific texture through a non-woven method to obtain the concrete transfer short fiber non-woven fabric.

[0063] In the first step:

[0064] When solute A is used, the mass ratio of solute to water is 0.1%-1.0%;

[0065] When using solute B, the mass ratio of solute to water is 0.1%-1.0%;

[0066] When C solute is used, the mass ratio of solute to water is 0.05%-1.0%;

[0067] When solute D is used, the mass ratio of solute to water is 0.05%-1.0%.

[0068] In the second step, the weight ratio of the four substances A, B, C and D is: 30-40:15-25:3-5:1-3.

[0069] In the second step, making the core material into core particles means: making the core particles into core particles by extrusion and spheronization of the core material.

[0070] In the second step, wrapping the capsule wall material on the outside of the capsule core particle means: wrapping the capsule wall material on the outside of the capsule core particle by spraying;

[0071] The capsule wall material is a solution, and the solute is any one of polyurethane, gelatin, hydroxypropyl methylcellulose, and polyvinyl alcohol or any mixture thereof.

[0072] In the second step, microcapsules dispersed from each other are first obtained, and then microcapsules with a particle size of 1000µm-1250µm are screened out to serve as microcapsules used for loading in the third step.

[0073] A non-woven fabric is made according to the above-mentioned method for making a concrete transfer short fiber non-woven fabric, namely the concrete transfer short fiber non-woven fabric.

[0074] An application of a non-woven fabric, wherein the non-woven fabric is the above-mentioned non-woven fabric, and the application comprises the following steps:

[0075] Method 1: First, pour fresh concrete in the mold, and then cover one side of the fabric on the surface of the concrete so that the slurry in the concrete contacts the etching components and microcapsules on the fabric. After the concrete is finally set, remove the fabric, and then use a high-pressure water gun to wash the surface of the concrete in contact with the fabric to remove the cement slurry that has not solidified due to the action of the etching components, so that a pattern with randomly distributed short lines can be formed on the concrete surface.

[0076] Method 2: First, lay the fabric flat and fix it on the inner surface of the mold, and then pour the freshly mixed concrete into the mold. After the pouring is completed, the slurry in the concrete comes into contact with the etching components and microcapsules on the fabric. After the concrete is finally set, the template that constitutes the mold is removed, and then the fabric is peeled off. The concrete surface in contact with the fabric is rinsed with a high-pressure water gun to remove the cement slurry that has not solidified due to the etching components. A pattern with randomly distributed short lines can be formed on the concrete surface.

[0077] In the method 1, after the slurry in the concrete comes into contact with the etching components and microcapsules on the fabric, a NaOH solution with a pH of ≥11 is evenly sprayed on the surface of the fabric, and then the concrete is waited for final setting;

[0078] In the second method, after the fabric is laid flat and fixed on the inner surface of the mold, a NaOH solution with a pH of ≥11 is evenly sprayed on the surface of the fabric, and then freshly mixed concrete is poured into the mold.

[0079] The time for peeling off the fabric is 1 to 12 hours after the final setting of the concrete and before the retarding effect of the etching component fails.

[0080] The principle of the present invention is described as follows:

[0081] The present invention records in the third step of the preparation method "third step: first load the microcapsules on the short fibers through a binder". The short fibers here are a new fiber, not the etched fiber prepared in the first step.

[0082] The concrete in contact with the fabric in the present invention is a slurry, which is viscous and movable.

[0083] Triton X-100 in the present invention is similar to Tween-80 and is also a non-ionic surfactant, which is usually used as a cell membrane dissociation agent and a protein dissociation agent.

[0084] The Brij 35 in the present invention is a nonionic surfactant, which is commonly used to dissolve hydrophobic substances such as protein and cholesterol.

[0085] NP-40 in the present invention, also known as OctylpHenol polyethylene glycol ether, is a non-ionic surfactant, which is usually used for the dissociation of cell membranes and the extraction of intracellular components.

[0086] The CHAPS in the present invention is an ionic surfactant that can be used to solubilize membrane proteins and water-soluble proteins, and is also called 3-[(3-Cholamidopropyl)dimethylammonio]-1-propanesulfonate.

[0087] Embodiment 1:

[0088] See also Figure 1 and Figure 2 A method for making a concrete transfer short fiber nonwoven fabric, the method comprising the following steps:

[0089] Step 1: First, soak the short fiber in the etching component solution (preferably for 1-2 hours), then take out the short fiber and dry it to obtain the etched fiber, the length of which is 3mm-30mm;

[0090] The solvent of the etching component solution is water, the mass ratio of the solute to the water is 0.05%-1.0%, and the solute is any one of the following or any mixture thereof:

[0091] A solute: sugar polyol derivatives;

[0092] B solute: organic matter containing carboxylic acid groups;

[0093] C solute: phosphate;

[0094] D solute: borate;

[0095] Step 2: firstly, the four substances A, B, C and D are uniformly mixed to obtain a mixture, wherein the weight ratio of the four substances A, B, C and D is 30-40:15-25:3-5:1-3, and then water is added according to 30%-50% of the mass of the mixture, and mixed to obtain a capsule core material, and then the capsule core material is made into capsule core particles, and then the capsule wall material is wrapped on the outside of the capsule core particles to obtain a blank capsule, and the capsule wall material is dissolved in an environment of pH ≥ 11, and then the blank capsule is air-dried to obtain microcapsules dispersed with each other (such as Figure 2As shown); the substance A is any one of sodium silicate, aluminum oxide, potassium silicate, calcium silicate, and calcium aluminum silicate, or any combination thereof; the substance B is any one of microcrystalline cellulose, hydroxypropyl methylcellulose, polyvinyl alcohol, and corn starch, or any combination thereof; the substance C is any one of Tween 80, Triton X-100, Brij 35, NP-40, and CHAPS, or any combination thereof; the substance D is any one of methylcellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and ethyl cellulose, or any combination thereof;

[0096] The third step: first load the microcapsules on the short fibers through a binder to obtain capsule fibers, the length of the capsule fibers is 10mm-50mm, the mass ratio of the etched fibers and the capsule fibers is 1-5:5-9, and then the etched fibers and capsule fibers are used as raw materials and made into non-woven fabrics according to a specific texture through a non-woven method to obtain the concrete transfer short fiber non-woven fabric.

[0097] Embodiment 2:

[0098] The basic content is the same as that of Example 1, except that:

[0099] In the first step:

[0100] When solute A is used, the mass ratio of solute to water is 0.1%-1.0%;

[0101] When using solute B, the mass ratio of solute to water is 0.1%-1.0%;

[0102] When C solute is used, the mass ratio of solute to water is 0.05%-1.0%;

[0103] When solute D is used, the mass ratio of solute to water is 0.05%-1.0%.

[0104] Embodiment 3:

[0105] The basic content is the same as that of Example 1, except that:

[0106] In the second step, the mass ratios of the four substances A, B, C and D to each other are as follows: sodium silicate accounts for 35%, microcrystalline cellulose accounts for 20%, Tween 80 accounts for 4%, and methyl cellulose accounts for 2%.

[0107] Embodiment 4:

[0108] The basic content is the same as that of Example 1, except that:

[0109] A non-woven fabric is made according to the above-mentioned method for making a concrete transfer short fiber non-woven fabric, namely the concrete transfer short fiber non-woven fabric.

[0110] Embodiment 5:

[0111] The basic contents are the same as those of Example 4, except that:

[0112] An application of a non-woven fabric, wherein the non-woven fabric is the above-mentioned non-woven fabric, and the application comprises any one of the following methods:

[0113] Method 1: First, pour fresh concrete in the mold, and then cover one side of the fabric on the surface of the concrete so that the slurry in the concrete contacts the etching components and microcapsules on the fabric. After the concrete is finally set, remove the fabric, and then use a high-pressure water gun to wash the surface of the concrete in contact with the fabric to remove the cement slurry that has not solidified due to the action of the etching components, so that a pattern with randomly distributed short lines can be formed on the concrete surface.

[0114] Method 2: First, lay the fabric flat and fix it on the inner surface of the mold, and then pour the freshly mixed concrete into the mold. After the pouring is completed, the slurry in the concrete comes into contact with the etching components and microcapsules on the fabric. After the concrete is finally set, the template that constitutes the mold is removed, and then the fabric is peeled off. The concrete surface in contact with the fabric is rinsed with a high-pressure water gun to remove the cement slurry that has not solidified due to the etching components. A pattern with randomly distributed short lines can be formed on the concrete surface.

[0115] The decorative effect of the above application on concrete is a randomly distributed short line texture (such as Figure 1 as shown).

[0116] Embodiment 6:

[0117] The basic contents are the same as those of Example 5, except that:

[0118] In the method 1, after the slurry in the concrete comes into contact with the etching components and microcapsules on the fabric, a NaOH solution with a pH of ≥11 is evenly sprayed on the surface of the fabric, and then the concrete is waited for final setting;

[0119] In the second method, after the fabric is laid flat and fixed on the inner surface of the mold, a NaOH solution with a pH of ≥11 is evenly sprayed on the surface of the fabric, and then freshly mixed concrete is poured into the mold.

[0120] Embodiment 7:

[0121] The basic contents are the same as those of Example 5, except that:

[0122] An application of a non-woven fabric. After the concrete comes into contact with the etching components and microcapsules on the non-woven fabric, an external force can be applied to the non-woven fabric to destroy the capsule wall material of the microcapsule through physical force, so that the capsule core particles in the microcapsule come into contact with the concrete. At this time, physical destruction and alkaline destruction together can accelerate the reaction speed.

[0123] Embodiment 8:

[0124] The basic content is the same as that of Example 1, except that:

[0125] A method for making a concrete transfer short fiber nonwoven fabric, the method comprising the following steps:

[0126] Step 1: First, soak the short fiber in the etching component solution for 1-2 hours, then take out the short fiber and dry it to obtain the etched fiber;

[0127] The solvent of the etching component solution is water, the mass ratio of the solute to the water is 0.02%-0.2%, and the solute is sodium tripolyphosphate (a phosphate). The preparation method is as follows: first, according to the required concentration and volume of the etching component solution, weigh an appropriate amount of sodium tripolyphosphate powder and add it to a measuring cylinder, then add a sufficient amount of distilled water, and then stir with a magnetic stirrer to fully dissolve the sodium tripolyphosphate, and then adjust the volume and concentration of the solution with distilled water until the required concentration and volume are reached, and then stir evenly with a glass rod, and transfer the sodium tripolyphosphate solution to a clean container for storage as the etching component solution for subsequent use;

[0128] Step 2: First, the four substances A, B, C, and D are uniformly mixed to obtain a mixture, wherein the weight ratio of the four substances A, B, C, and D is: 30-40:15-25:3-5:1-3, and then water is added according to 30%-50% of the mass of the mixture, and mixed to obtain a capsule core material, and then the capsule core material is made into capsule core particles, and then the capsule wall material is wrapped on the outside of the capsule core particles to obtain a blank capsule, and the capsule wall material is dissolved in an environment of pH ≥ 11, and then the blank capsule is air-dried to obtain microcapsules dispersed with each other (such as Figure 2 As shown); the substance A is any one of sodium silicate, aluminum oxide, potassium silicate, calcium silicate, and calcium aluminum silicate, or any combination thereof; the substance B is any one of microcrystalline cellulose, hydroxypropyl methylcellulose, hydroxyethyl cellulose, polyvinyl alcohol, and corn starch, or any combination thereof; the substance C is any one of Tween 80, Triton X-100, Brij 35, NP-40, and CHAPS, or any combination thereof; the substance D is any one of methylcellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, ethyl cellulose, and polyvinyl alcohol, or any combination thereof;

[0129] Step 3: first load the microcapsules onto the short fibers through a binder to obtain capsule fibers, then use the etched fibers and capsule fibers as raw materials, and make non-woven fabrics according to specific textures through a non-woven method to obtain the concrete transfer short fiber non-woven fabric.

[0130] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A method for making a concrete transfer short fiber nonwoven fabric, characterized in that: The production method comprises the following steps: The first step is to soak the short fiber in the etching component solution, and then take out the short fiber and dry it to obtain the etched fiber, the length of which is 3mm-30mm; The solvent of the etching component solution is water, the mass ratio of the solute to the water is 0.05%-1.0%, and the solute is any one of the following or any mixture thereof: A solute: sugar polyol derivatives; B solute: organic matter containing carboxylic acid groups; C solute: phosphate; D solute: borate; Step 2: firstly, the four substances A, B, C and D are uniformly mixed to obtain a mixture, then water is added according to 30%-50% of the mass of the mixture, and the mixture is mixed to obtain a capsule core material, then the capsule core material is made into capsule core particles, and then the capsule wall material is wrapped on the outside of the capsule core particles to obtain a blank capsule, the capsule wall material is dissolved in an environment of pH ≥ 11, and then the blank capsule is air-dried to obtain microcapsules dispersed from each other; The substance A is any one of sodium silicate, aluminum oxide, potassium silicate, calcium silicate, and calcium aluminum silicate, or any mixture thereof; The second substance is any one of microcrystalline cellulose, hydroxypropyl methylcellulose, polyvinyl alcohol, and corn starch, or any mixture thereof; The substance C is any one of Tween 80, Triton X-100, Brij 35, NP-40, and CHAPS, or any mixture thereof; The D substance is any one of methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and ethyl cellulose, or any mixture thereof; The third step: first load the microcapsules on the short fibers through a binder to obtain capsule fibers, the length of the capsule fibers is 10mm-50mm, the mass ratio of the etched fibers and the capsule fibers is 1-5:5-9, and then the etched fibers and capsule fibers are used as raw materials and made into non-woven fabrics according to a specific texture through a non-woven method to obtain the concrete transfer short fiber non-woven fabric.

2. The method for making a concrete transfer short fiber nonwoven fabric according to claim 1, characterized in that: In the first step: When solute A is used, the mass ratio of solute to water is 0.1%-1.0%; When using solute B, the mass ratio of solute to water is 0.1%-1.0%; When C solute is used, the mass ratio of solute to water is 0.05%-1.0%; When solute D is used, the mass ratio of solute to water is 0.05%-1.0%.

3. The method for making a concrete transfer short fiber nonwoven fabric according to claim 1 or 2, characterized in that: In the second step, the weight ratio of the four substances A, B, C and D is: 30-40:15-25:3-5:1-3.

4. The method for making a concrete transfer short fiber nonwoven fabric according to claim 1 or 2, characterized in that: In the second step, making the core material into core particles means: making the core particles into core particles by extrusion and spheronization of the core material.

5. The method for making a concrete transfer short fiber nonwoven fabric according to claim 1 or 2, characterized in that: In the second step, wrapping the capsule wall material on the outside of the capsule core particle means: wrapping the capsule wall material on the outside of the capsule core particle by spraying; The capsule wall material is a solution, and the solute is any one of polyurethane, gelatin, hydroxypropyl methylcellulose and polyvinyl alcohol or any mixture thereof.

6. The method for making a concrete transfer short fiber nonwoven fabric according to claim 1 or 2, characterized in that: In the second step, microcapsules dispersed from each other are first obtained, and then microcapsules with a particle size of 1000µm-1250µm are screened out to serve as microcapsules used for coating in the third step.

7. A nonwoven fabric, characterized in that: The non-woven fabric is made according to the method for making a concrete transfer short fiber non-woven fabric according to claim 1, that is, the concrete transfer short fiber non-woven fabric.

8. An application of a nonwoven fabric, characterized in that: The nonwoven fabric is the nonwoven fabric according to claim 7, and the application comprises the following steps: Method 1: First, pour freshly mixed concrete in the mold, and then cover one side of the non-woven fabric on the surface of the concrete, so that the slurry in the concrete is in contact with the etching components and microcapsules on the non-woven fabric. After the concrete is finally set, the non-woven fabric is peeled off, and then the surface of the concrete in contact with the non-woven fabric is washed with a high-pressure water gun to remove the cement slurry that has not solidified due to the action of the etching components, so that a pattern with randomly distributed short lines can be formed on the concrete surface; Method 2: First, lay the non-woven fabric flat and fix it on the inner surface of the mold, and then pour the freshly mixed concrete into the mold. After the pouring is completed, the slurry in the concrete comes into contact with the etching components and microcapsules on the non-woven fabric. After the concrete is finally set, the template that constitutes the mold is removed, and then the non-woven fabric is peeled off. The concrete surface in contact with the non-woven fabric is rinsed with a high-pressure water gun to remove the cement slurry that has not solidified due to the action of the etching components, and a pattern with randomly distributed short lines can be formed on the concrete surface.

9. The use of a nonwoven fabric according to claim 8, characterized in that: In the method 1, after the slurry in the concrete comes into contact with the etching components and microcapsules on the non-woven fabric, a NaOH solution with a pH of ≥11 is evenly sprayed on the surface of the non-woven fabric, and then the concrete is waited for final setting; In the second method, after the non-woven fabric is laid flat and fixed on the inner surface of the mold, a NaOH solution with a pH of ≥11 is evenly sprayed on the surface of the non-woven fabric, and then freshly mixed concrete is poured into the mold.

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