CN115974453A - Composite super-hydrophobic agent, preparation method and application thereof - Google Patents
Composite super-hydrophobic agent, preparation method and application thereof Download PDFInfo
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- CN115974453A CN115974453A CN202310074571.9A CN202310074571A CN115974453A CN 115974453 A CN115974453 A CN 115974453A CN 202310074571 A CN202310074571 A CN 202310074571A CN 115974453 A CN115974453 A CN 115974453A
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Abstract
The invention discloses a composite super-hydrophobic agent, a preparation method and application thereof, and belongs to the technical field of super-hydrophobic concrete. The composite super-hydrophobic agent is formed by mixing a super-hydrophobic component, a hydrophobic modification component, a pore-plugging component, a thickening component and a solvent component; the super-hydrophobic component is an organic silicon super-hydrophobic material, the hydrophobic modification component is long-chain fatty acid, the pore-blocking component is a pore plug, and the densification component is nano particles. The super-hydrophobic agent of the invention uses the cheap long-chain fatty acid part to replace the expensive organosilicon super-hydrophobic substance, thereby realizing super-hydrophobic of the material and reducing the production cost. According to the environment-friendly integral super-hydrophobic concrete, the super-hydrophobic concrete with the contact angle larger than 150 degrees is prepared by using the environment-friendly composite super-hydrophobic agent, the strength of the super-hydrophobic concrete is improved, the super-hydrophobic property is also formed in the concrete, the preparation process is simple, and the environment-friendly integral super-hydrophobic concrete is suitable for large-scale production.
Description
Technical Field
The invention belongs to the technical field of super-hydrophobic concrete, and particularly relates to a composite super-hydrophobic agent, a preparation method and application thereof.
Background
Concrete material is a widely used engineering material, but due to its hydrophilic property and the presence of many tiny pores inside, it is easily eroded by the external environment, thereby affecting the durability of the structure. The water penetration can cause various degradation mechanisms such as chemical erosion, alternation of dry and wet, carbonization, freeze-thaw cycle and the like, so that the performance of the concrete is deteriorated or even lost, and potential safety hazards and huge economic loss are caused. Meanwhile, due to the hydrophilic property, the concrete structure is easily polluted by dust, and the using effect and the attractiveness of the structure are influenced. The super-hydrophobic modification technology can endow the surface of the concrete structure with self-cleaning property and super-hydrophobic property, so that dust cannot be accumulated on the surface of the concrete, water can be prevented from entering the concrete fundamentally, and the permeation of water to materials is reduced, thereby improving the durability of the concrete.
For super-hydrophobic concrete, at present, the super-hydrophobic concrete is mainly prepared by a dipping method, a brushing method and other methods, but the super-hydrophobic concrete can only realize the surface super-hydrophobic characteristic, and if a coating is peeled off or abraded, the concrete is still hydrophilic. Researches show that the super-hydrophobic agent is synchronously doped in the preparation process of the concrete, so that the overall super-hydrophobic property of the concrete can be realized, but the conventional super-hydrophobic agent has high price, single component and no environmental protection, can greatly reduce the compressive strength of the concrete, and is not beneficial to developing large-scale application. For engineering applications, the surface and the interior of the superhydrophobic concrete should have superhydrophobicity at the same time and enhance the strength of the superhydrophobic concrete as much as possible.
Patent document CN201910664908.5 discloses a matrix super-hydrophobic sand-free concrete prepared by using isobutyl triethoxysilane, wherein the inside of the prepared super-hydrophobic concrete reaches super-hydrophobicity, but the surface does not reach super-hydrophobicity, and the porosity of the matrix super-hydrophobic sand-free concrete is 25% -40%, and compact super-hydrophobic concrete is not involved.
Patent document CN114656190A discloses a hydrophobic pore suppository of fatty acid concrete and a preparation method thereof, and patent document CN110255962A discloses a hydrophobic compound pore suppository emulsion and a preparation method thereof, and the two pore suppositories have no super-hydrophobic effect on concrete.
Disclosure of Invention
The existing concrete is easily corroded by the external environment due to the hydrophilic characteristic and a plurality of micro pores in the existing concrete, so that the durability of the structure is influenced. In order to solve the technical problems, the invention provides a composite superhydrophobic agent, a preparation method and application thereof, wherein the composite superhydrophobic agent can effectively improve the overall superhydrophobic property of concrete and improve the strength and compactness of the concrete, and the composite superhydrophobic agent obviously reduces the dosage of an expensive material, namely a superhydrophobic component in common superhydrophobic concrete and reduces the production cost.
In order to achieve the above object, the present invention provides the following technical solutions.
In a first aspect, the invention provides a composite superhydrophobic agent, which is prepared by compounding a superhydrophobic component, a hydrophobic modification component, a pore blocking component, a densification component and a solvent component, wherein the components are as follows in parts by mass:
the super-hydrophobic component is a silane super-hydrophobic material with 10-30 carbon atoms.
The silane super-hydrophobic material is one or more of isobutyl triethoxysilane, hexadecyl trimethoxysilane and docosyl triethoxysilane.
The hydrophobic modification component is long-chain fatty acid with 10-30 carbon atoms.
The long-chain fatty acid is one or more of stearic acid, lauric acid, palmitic acid, behenic acid and octacosanoic acid.
The hole plugging component is a hole plug; the pore plug is one or more of micro silicon powder, sodium silicate, magnesium oxide and nano calcium carbonate, and the size of the pore plug is 0.10-0.50 mu m.
The densification component is nano particles; the nano particles are one or a mixture of more of nano silicon oxide, nano aluminum oxide and nano titanium oxide, and the size of the nano particles is 10nm-50nm.
The solvent component is water.
According to the invention, the super-hydrophobic components such as isobutyl triethoxysilane, hexadecyl trimethoxysilane and docosyltriethoxysilane are used to provide low surface energy for the concrete microstructure, so that a super-hydrophobic structure is formed on the surface and inside of the concrete, and the super-hydrophobic structure can prevent water from entering. The long-chain fatty acid hydrophobic modified component composite pore plug hole plugging component is utilized, concrete microcracks can be filled on the premise of ensuring the super-hydrophobicity of concrete, the permeation of external erosion media is prevented, the porosity of the concrete is reduced, the strength of the super-hydrophobic concrete is increased, the using amount of silane super-hydrophobic components can be reduced, and the cost of the super-hydrophobic concrete is reduced. The nano particle densification component fills capillary pores in the concrete, so that the compactness of the concrete is further increased, and the strength of the super-hydrophobic concrete is improved.
In a second aspect, the invention provides a preparation method of a composite superhydrophobic agent, which comprises the following steps:
(1) Dispersing the densification component and the hole plugging component in water, and uniformly stirring at a high speed to prepare a mixed solution;
(2) And adding the super-hydrophobic component and the hydrophobic modification component into the mixed solution for uniform dispersion to prepare the environment-friendly composite super-hydrophobic agent.
The temperature of the mixed solution in the dispersion process of the step (2) is 15-60 ℃.
And (3) dispersing the mixed solution by adopting ultrasonic in the step (2), wherein the ultrasonic time is 30-600min.
In a third aspect, the invention also provides application of the composite super-hydrophobic agent, and the composite super-hydrophobic agent can be applied to neat paste, mortar, common concrete and foam concrete.
Compared with the prior art, the invention has the beneficial effects that:
(1) The composite super-hydrophobic agent provided by the invention is used for super-hydrophobic concrete, can avoid the phenomenon that the strength of the super-hydrophobic concrete is greatly reduced, so that the super-hydrophobic concrete has good overall super-hydrophobic characteristic, the surface contact angle is more than 150 degrees, the interior of the super-hydrophobic concrete also has good hydrophobicity, and meanwhile, micro cracks of the super-hydrophobic concrete can be effectively filled, the compactness of the super-hydrophobic concrete is increased, so that the resistance of the super-hydrophobic concrete to the erosion of the external environment is improved, and the durability of the super-hydrophobic concrete is enhanced.
(2) The composite super-hydrophobic agent provided by the invention is simple in preparation process, is suitable for large-scale production, reduces the dosage of part of expensive materials in the traditional super-hydrophobic agent, and reduces the production cost.
(3) Compared with the traditional fluorine-containing hydrophobic agent, the composite super-hydrophobic agent provided by the invention is more environment-friendly, and can greatly reduce the harm to the environment.
Drawings
FIG. 1 is a comparison of the water absorption curves of concrete of example 3 and a blank;
FIG. 2 is a contact angle test chart of the super-hydrophobic concrete surface obtained in example 1;
FIG. 3 is a contact angle test chart of the super-hydrophobic concrete surface obtained in comparative example 1;
FIG. 4 is a contact angle test chart of the surface of the hydrophobic concrete obtained in comparative example 3.
Detailed Description
In order to better understand the present disclosure, the present disclosure is further illustrated with reference to the following examples, but the present disclosure is not limited to the following examples. All equivalent changes or modifications made according to the method core of the present invention shall be covered by the protection scope of the present invention. Meanwhile, under the premise of following the process parameter range disclosed by the invention application, the process parameter can be adjusted according to various embodiments and other properly defined processes.
The materials selected in the examples of the invention and the comparative examples are as follows:
the grain diameter of the gas phase nano silicon dioxide is 12nm; the grain diameter of the nano alumina is 20nm; the grain diameter of the nano titanium oxide is 20nm; the grain size of the nano calcium carbonate is 100nm, the grain size of the micro silicon powder is 0.20 mu m, and the grain size of the magnesium oxide is 500nm. The cement is P.II 42.5 type ordinary portland cement produced by conch company. The water reducing agent is a polycarboxylic acid water reducing agent produced by Jiangsu Borter New materials, and the isobutyl triethoxy silane is produced by Hubei cloud magnesium technology, inc., and the purity is 97%. Stearic acid, lauric acid, palmitic acid, behenic acid, hexadecyl trimethoxy silane and docosyl triethoxy silane are commercially available products.
Example 1
A composite super-hydrophobic agent comprises the following components in parts by weight: 8 parts of isobutyl triethoxysilane, 5 parts of stearic acid, 10 parts of micro silicon powder, 1 part of magnesium oxide, 10 parts of nano silicon oxide and 69 parts of water.
A preparation method of a composite superhydrophobic agent comprises the following steps: placing the nano silicon oxide and water of the components in a beaker, stirring for 60s by using a glass rod, stirring for 6min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the isobutyl triethoxysilane, stearic acid, micro silicon powder and magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 100min at 40 ℃ to obtain the composite superhydrophobic agent.
Example 2
The present example provides a composite superhydrophobic agent, which is different from example 1 in that the balance of the compound superhydrophobic agent in this example are 5 parts by mass of isobutyltriethoxysilane, 10 parts by mass of stearic acid, and 64 parts by mass of water, all in the same manner as in example 1.
A preparation method of a composite super-hydrophobic agent comprises the following steps: placing the nano silicon oxide and water of the components in a beaker, stirring for 60s by using a glass rod, stirring for 6min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the isobutyl triethoxysilane, stearic acid, micro silicon powder and magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 150min at 40 ℃ to obtain the composite superhydrophobic agent.
Example 3
The composite superhydrophobic agent provided in this example is different from example 1 in that, in this example, 10 parts by mass of isobutyltriethoxysilane, 5 parts by mass of microsilica, 15 parts by mass of nano-silica, and 64 parts by mass of water are the same as in example 1 except for the above.
A preparation method of a composite super-hydrophobic agent comprises the following steps: placing the nano silicon oxide and the hydrosolvent of the components in a beaker, stirring for 60s by using a glass rod, stirring for 6min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the isobutyl triethoxysilane, stearic acid, micro silicon powder and magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 150min at 40 ℃ to prepare the composite superhydrophobic agent.
Example 4
A composite super-hydrophobic agent comprises the following components in parts by weight: 20 parts by mass of isobutyl triethoxysilane, 10 parts by mass of lauric acid, 10 parts by mass of micro silicon powder, 1 part by mass of magnesium oxide, 15 parts by mass of nano silicon oxide and 49 parts by mass of water.
A preparation method of a composite super-hydrophobic agent comprises the following steps: placing the nano silicon oxide and water in a beaker, stirring for 60s by using a glass rod, stirring for 6min by using a high-speed stirrer 15000r to obtain a mixed solution, adding the isobutyl triethoxysilane, lauric acid, microsilica and magnesium oxide in the mixed solution, and performing ultrasonic dispersion for 150min at 40 ℃ to obtain the composite superhydrophobic agent.
Example 5
The composite super-hydrophobic agent comprises the following components in parts by weight: 15 parts by mass of isobutyl triethoxysilane, 10 parts by mass of palmitic acid, 15 parts by mass of micro silicon powder, 1 part by mass of magnesium oxide, 10 parts by mass of nano silicon oxide and 55 parts by mass of water.
A preparation method of a composite super-hydrophobic agent comprises the following steps: placing the nano silicon oxide and the hydrosolvent of the components in a beaker, stirring for 60s by using a glass rod, stirring for 4min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the isobutyl triethoxysilane, palmitic acid, micro silicon powder and magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 120min at 40 ℃ to prepare the composite super-hydrophobic agent.
Example 6
The composite super-hydrophobic agent comprises the following components in parts by weight: 10 parts of isobutyl triethoxysilane, 5 parts of palmitic acid, 15 parts of silica fume, 2 parts of sodium silicate, 5 parts of nano alumina and 39 parts of water.
A preparation method of a composite super-hydrophobic agent comprises the following steps: placing the nano-alumina and the hydrosolvent of the components in a beaker, stirring for 60s by using a glass rod, stirring for 4min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the isobutyl triethoxysilane, the palmitic acid, the micro silicon powder and the sodium silicate of the components into the mixed solution, and performing ultrasonic dispersion for 120min at 40 ℃ to prepare the composite superhydrophobic agent.
Example 7
A composite super-hydrophobic agent comprises the following components in parts by weight: 10 parts by mass of hexadecyl trimethoxy silane, 10 parts by mass of stearic acid, 7 parts by mass of micro silicon powder, 15 parts by mass of nano silicon oxide and 58 parts by mass of water.
A preparation method of a composite superhydrophobic agent comprises the following steps: placing the nano silicon oxide and the hydrosolvent of the components in a beaker, stirring for 60s by a glass rod, stirring for 4min by a high-speed stirrer 15000r to obtain a mixed solution, adding the hexadecyl trimethoxy silane, the stearic acid and the micro silicon powder of the components into the mixed solution, and performing ultrasonic dispersion for 100min at 42 ℃ to prepare the composite super-hydrophobic agent.
Example 8
A composite super-hydrophobic agent comprises the following components in parts by weight: 10 parts by mass of hexadecyl trimethoxy silane, 10 parts by mass of stearic acid, 15 parts by mass of nano calcium carbonate, 1 part by mass of magnesium oxide, 10 parts by mass of nano titanium oxide and 54 parts by mass of water.
A preparation method of a composite super-hydrophobic agent comprises the following steps: placing the nano titanium oxide and the hydrosolvent of the components in a beaker, stirring for 60s by a glass rod, stirring for 4min by a high-speed stirrer 15000r to obtain a mixed solution, adding the hexadecyl trimethoxy silane, the stearic acid, the nano calcium carbonate and the magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 100min at 42 ℃ to prepare the composite super-hydrophobic agent.
Example 9
A composite super-hydrophobic agent comprises the following components in parts by weight: 10 parts of docosyltriethoxysilane, 10 parts of lauric acid, 15 parts of micro silicon powder, 1 part of magnesium oxide, 4 parts of nano silicon oxide and 60 parts of water.
A preparation method of a composite superhydrophobic agent comprises the following steps: placing the nano silicon oxide and the hydrosolvent of the components in a beaker, stirring for 60s by using a glass rod, stirring for 4min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the docosyltriethoxysilane, the lauric acid, the micro silicon powder and the magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 100min at 42 ℃ to prepare the composite super-hydrophobic agent.
Example 10
A composite super-hydrophobic agent comprises the following components in parts by weight: 10 parts of docosyltriethoxysilane, 10 parts of behenic acid, 10 parts of nano calcium carbonate, 1 part of magnesium oxide, 10 parts of nano silicon oxide and 59 parts of water.
A preparation method of a composite super-hydrophobic agent comprises the following steps: placing the nano silicon oxide and the hydrosolvent of the components in a beaker, stirring for 60s by a glass rod, stirring for 4min by a high-speed stirrer 15000r to obtain a mixed solution, adding the docosyltriethoxysilane, the behenic acid, the nano calcium carbonate and the magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 100min at 42 ℃ to prepare the composite super-hydrophobic agent.
Example 11
A composite super-hydrophobic agent comprises the following components in parts by weight: 10 parts of docosyltriethoxysilane, 10 parts of octacosanoic acid, 10 parts of nano calcium carbonate, 1 part of magnesium oxide, 10 parts of nano aluminum oxide and 59 parts of water.
A preparation method of a composite superhydrophobic agent comprises the following steps: placing the nano alumina and the hydrosolvent of the components in a beaker, stirring for 60s by using a glass rod, stirring for 4min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the docosyltriethoxysilane, the octacosanoic acid, the nano calcium carbonate and the magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 100min at 42 ℃ to prepare the environment-friendly composite super hydrophobic agent.
Comparative example 1
This comparative example provides a composite superhydrophobic agent, similar to example 4, except that the composite superhydrophobic agent consists of only a superhydrophobic component and a solvent component, the superhydrophobic component is not partially replaced with a hydrophobic modification component, and a pore blocking component and a thickening component are not added; the super-hydrophobic component is isobutyl triethoxysilane; the solvent component is water.
A composite super-hydrophobic agent comprises the following components in parts by weight: 20 parts of isobutyl triethoxysilane and 85 parts of water by mass.
A preparation method of a composite super-hydrophobic agent comprises the following steps: and (3) ultrasonically dispersing isobutyl triethoxysilane and water at 40 ℃ for 150min to prepare the composite super-hydrophobic agent.
Comparative example 2
This comparative example provides a composite superhydrophobic, similar to example 4, except that the composite superhydrophobic lacks a hydrophobically-modifying component.
The composite super-hydrophobic agent comprises the following components in parts by weight: 20 parts of isobutyl triethoxysilane, 10 parts of micro silicon powder, 1 part of magnesium oxide, 15 parts of nano silicon oxide and 59 parts of water.
A preparation method of a composite superhydrophobic agent comprises the following steps: placing the nano silicon oxide and water of the components in a beaker, stirring for 60s by using a glass rod, stirring for 6min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the isobutyl triethoxysilane, the micro silicon powder and the magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 150min at 40 ℃ to obtain the composite superhydrophobic agent.
Comparative example 3
This comparative example provides a composite superhydrophobic similar to example 4 except that the composite superhydrophobic was free of superhydrophobic components.
A composite super-hydrophobic agent comprises the following components in parts by weight: 10 parts by mass of lauric acid, 10 parts by mass of micro silicon powder, 1 part by mass of magnesium oxide, 15 parts by mass of nano silicon oxide and 69 parts by mass of water.
A preparation method of a composite super-hydrophobic agent comprises the following steps: placing the nano silicon oxide and water of the components in a beaker, stirring for 60s by using a glass rod, stirring for 6min by using a high-speed stirrer 15000r to obtain a mixed solution, then adding the lauric acid, the micro silicon powder and the magnesium oxide of the components into the mixed solution, and performing ultrasonic dispersion for 150min at 40 ℃ to obtain the composite super hydrophobic agent.
Application examples
The composite superhydrophobic agents prepared in examples 1-11 and comparative examples 1-3 were mixed into a concrete formulation to prepare concrete, the concrete not mixed with the composite superhydrophobic agent was set as a blank example, and the concrete was subjected to a contact angle test, a compressive strength test, a water absorption test, and a surface morphology test.
The concrete comprises the following raw materials in parts by weight: 20 parts of cement, 40 parts of sand, 0.5 part of water reducing agent and 10 parts of water; the cement is general PO42.5 common Portland cement; the sand is natural river sand; the water reducing agent is a Subot PCA-10 polycarboxylic acid water reducing agent. The mixing amount of the composite super-hydrophobic agent is 4 parts by weight.
The contact angle is tested by a DSA30 standard contact angle measuring instrument, the size of each drop is 5 mu L, a first frame image of the drop on the surface of the cement-based material is selected for testing the contact angle, and the error deviation is about +/-2 degrees. Wherein, fig. 2, fig. 3 and fig. 4 are the first frame graphs of the contact angle test of the example 3, the comparative example 1 and the comparative example 3 respectively.
The compressive strength of the concrete is tested according to the regulation in GB/T50081-2002 Standard for testing mechanical properties of common concrete.
Method for testing Water absorption percentage the water absorption percentage of concrete in example 3 and the concrete in the blank was calculated from the test data by performing the test method for the water absorption percentage of concrete prescribed in mortar and concrete Water repellent (JC 474-2008).
The present invention is further illustrated below with reference to specific test results, which are shown in table 1 below, wherein the blank group is concrete prepared without adding the composite superhydrophobic agent:
table 1 results of concrete performance test of each group
As can be seen from the contact angle test results, the contact angles of the examples 1 to 11 are all more than 150 degrees, the super-hydrophobic effect is achieved, and the 28-day compressive strength of the super-hydrophobic oil is reduced less than that of the blank example. As shown in fig. 2, the water droplets on the surface of example 3 maintained a circular shape on the surface of the concrete without being adsorbed, indicating that the concrete prepared in example 3 exhibited superhydrophobicity.
As shown in FIG. 3, the contact state of the surface of the mortar prepared in comparative example 1 and water drops shows superhydrophobicity, but the superhydrophobic components in comparative examples 1-2 achieve the superhydrophobic effect, are single isobutyl triethoxysilane, and the superhydrophobic components have great damage to the strength of the concrete, so that the strength of the superhydrophobic concrete in comparative examples 1-2 is lower than that in examples 1-8. As shown in fig. 4, the water droplets on the surface of comparative example 3 were adsorbed by the mortar, and did not reach the superhydrophobic state, because comparative example 3 only used the hydrophobic modification component, and did not have the synergistic effect of the superhydrophobic component and the hydrophobic modification component, the modification effect was poor, and the contact angle was much less than 150 °.
The water absorption test results are shown in fig. 1. From fig. 1, it can be seen that the water absorption of the super-hydrophobic concrete prepared in example 3 is increased slowly and is lower than that of the ordinary concrete prepared in the blank example, and the water absorption of the ordinary concrete reaches more than 6% in the first hour, and then the water absorption is increased continuously with the time.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. The composite super-hydrophobic agent is characterized by being prepared by compounding a super-hydrophobic component, a hydrophobic modification component, a pore blocking component, a densification component and a solvent component, wherein the components are as follows in parts by weight:
the super-hydrophobic component is a silane super-hydrophobic material with 10-30 carbon atoms;
the hydrophobic modification component is long-chain fatty acid with 10-30 carbon atoms;
the hole plugging component is a hole plug;
the densification component is a nanoparticle;
the solvent component is water.
2. The composite superhydrophobic agent of claim 1, wherein the silane-based superhydrophobic material is one or more of isobutyltriethoxysilane, hexadecyltrimethoxysilane, behenyltriethoxysilane.
3. The composite superhydrophobic agent of claim 1, wherein the long-chain fatty acid is one or more of stearic acid, lauric acid, palmitic acid, behenic acid, and octacosanoic acid.
4. The composite superhydrophobic agent of claim 1, wherein the pore plug is one or more of silica fume, sodium silicate, magnesium oxide, and nano calcium carbonate.
5. The composite superhydrophobic of claim 4, wherein the pore plug is 0.10 μ ι η -0.50 μ ι η in size.
6. The composite superhydrophobic agent of claim 1, wherein the nanoparticles are one or more of nano silica, nano alumina, and nano titania.
7. The composite superhydrophobic of claim 6, wherein the nanoparticles are 10nm-50nm in size.
8. The preparation method of the composite superhydrophobic agent of claims 1-7, characterized by comprising the steps of:
(1) Dispersing the densification component and the hole plugging component in water, and uniformly stirring at a high speed to prepare a mixed solution;
(2) And adding the super-hydrophobic component and the hydrophobic modification component into the mixed solution, and performing ultrasonic dispersion to obtain the environment-friendly composite super-hydrophobic agent.
9. The method for preparing the composite superhydrophobic agent of claim 8, wherein the temperature of the mixed solution during the dispersion in the step (2) is 15-60 ℃.
10. The method for preparing the composite superhydrophobic agent according to claim 8, wherein the step (2) is carried out by dispersing the mixed solution with ultrasound for 30-600min.
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| CN105601162A (en) * | 2015-12-29 | 2016-05-25 | 江苏苏博特新材料股份有限公司 | Preparation method of concrete erosion medium inhibiting material |
| CN105693135A (en) * | 2015-12-25 | 2016-06-22 | 江苏苏博特新材料股份有限公司 | Cement concrete inner-doping waterproof agent and preparing method thereof |
| CN114656190A (en) * | 2022-03-18 | 2022-06-24 | 中交四航工程研究院有限公司 | Fatty acid concrete hydrophobic pore suppository and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105693135A (en) * | 2015-12-25 | 2016-06-22 | 江苏苏博特新材料股份有限公司 | Cement concrete inner-doping waterproof agent and preparing method thereof |
| CN105601162A (en) * | 2015-12-29 | 2016-05-25 | 江苏苏博特新材料股份有限公司 | Preparation method of concrete erosion medium inhibiting material |
| CN114656190A (en) * | 2022-03-18 | 2022-06-24 | 中交四航工程研究院有限公司 | Fatty acid concrete hydrophobic pore suppository and preparation method thereof |
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