CN113429146A - Lithium carbonate-halloysite nanotube and preparation method and application thereof - Google Patents
Lithium carbonate-halloysite nanotube and preparation method and application thereof Download PDFInfo
- Publication number
- CN113429146A CN113429146A CN202110528038.6A CN202110528038A CN113429146A CN 113429146 A CN113429146 A CN 113429146A CN 202110528038 A CN202110528038 A CN 202110528038A CN 113429146 A CN113429146 A CN 113429146A
- Authority
- CN
- China
- Prior art keywords
- lithium carbonate
- halloysite
- halloysite nanotube
- nanotube
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/10—Acids or salts thereof containing carbon in the anion
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/603—Agents for controlling alkali-aggregate reactions
Abstract
The invention discloses a lithium carbonate-halloysite nanotube and a preparation method and application thereof. The preparation method comprises the following steps: and preparing the lithium carbonate-halloysite nanotube by taking a halloysite nanotube and lithium carbonate as raw materials and adopting a vacuum impregnation method. The lithium carbonate-halloysite nanotube is added into the concrete, and Li in the lithium carbonate-halloysite nanotube is added along with the progress of cement hydration reaction+Will gradually precipitate, Li+Can replace K in slurry+、Na+The reaction with silicate substances is carried out to generate non-expansive lithium silicate gel, so that the expansion of the sample is effectively hindered, and the effect of inhibiting the reaction of the sample alkali aggregate is achieved; CO in lithium carbonate-halloysite nanotubes3 2‑Will act to solidify Ca2+The effect of forming carbon in halloysite nanotubesCalcium of calcium, such that Ca2+The content of (A) is reduced, and the damage of carbonate reaction to a matrix is reduced; the halloysite nanotube can also be used as a reinforcing material to improve the crack resistance and the mechanical property of concrete.
Description
Technical Field
The invention relates to the field of concrete mineral admixtures, in particular to a lithium carbonate-halloysite nanotube and a preparation method and application thereof.
Background
The alkali-aggregate reaction (AAR) refers to the phenomenon that cement, aggregate, admixture, mixture and alkaline substances (potassium oxide or sodium oxide) in mixing water in concrete raw materials and alkali active mineral ingredients in the aggregate are subjected to chemical reaction to generate expansion substances (or water absorption expansion substances), so that after the concrete is cast and formed for a plurality of years, self-expansion stress is gradually generated inside the concrete, and the concrete is extended and cracked from inside to outside to cause damage. In the concrete engineering of China, the damaged Beijing Western straight gate overpass which is built with huge investment and is damaged due to alkali-aggregate reaction is dismantled in less than one year of operation. The Beijing three-element bridge engineering is reinforced again due to the damage of alkali-aggregate reaction, and the service life and the durability of the engineering are greatly reduced.
Hydraulic concrete works in countries all over the world have examples of engineering damage caused by alkali-aggregate reactions. However, no method for radically treating the damage of alkali-aggregate reaction in concrete engineering exists in all countries in the world at present, and the only effective method is prevention. To date, the international concrete engineering community has six measures for preventing the damage of alkali-aggregate reaction, which are based on the control of the content of alkali-aggregate reactant (alkali, active silicon and water) and the provision of reaction space, namely the control of the content of cement alkali, the control of the content of concrete alkali, the use of non-alkali active aggregate, the use of pozzolanic admixtures and water-quenched slag, the use of air entraining agents, the insulation of water and air sources.
Disclosure of Invention
The inventors have found that hollow fiber tubular Halloysite (HNT) with nanometer dimensions has a great potential for development in the field. The halloysite nanotube is low in price, is a nano-scale porous material with a hollow tube cavity structure, has strong adsorption capacity due to a large specific surface area and surface hydroxyl groups based on a special tube sac structure, has a large cation exchange capacity, is obvious in surface modification effect, and can be grafted with substances with special functions to achieve an expected adsorption target. The catalyst is mainly used as a template for catalytic reaction or a nano reaction catalyst, and has good adsorption performance on various pollutants (heavy metal ions, phenols, dyes and the like) in water. In addition, the halloysite nanotube has high activity and ion exchange capacity, so that the halloysite nanotube is a very potential carrier for development, such as a metal composite carrier.
Based on the above, the invention aims to provide a lithium carbonate-halloysite nanotube and a preparation method and application thereof.
The technical scheme of the invention is as follows:
a preparation method of a lithium carbonate-halloysite nanotube is characterized in that a halloysite nanotube and lithium carbonate are used as raw materials, and a vacuum impregnation method is adopted to prepare the lithium carbonate-halloysite nanotube.
Optionally, the step of preparing the lithium carbonate-halloysite nanotube by using the halloysite nanotube and the lithium carbonate as raw materials and adopting a vacuum impregnation method specifically includes:
preparing halloysite nanotubes;
and mixing the halloysite nanotube and a lithium carbonate solution, ultrasonically dispersing, pouring into a vacuum bottle, vacuumizing the vacuum bottle, and sequentially drying and grinding the mixture in the vacuumized vacuum bottle to obtain the lithium carbonate-halloysite nanotube.
Further optionally, the step of preparing the halloysite nanotubes specifically comprises:
according to the solid-liquid mass ratio of 1: 20-50 mixing the halloysite powder with an HCl solution, performing ultrasonic dispersion for 30-60 min, then performing water bath heating at 60-80 ℃ for 1-2 h, and sequentially performing suction filtration, washing, drying and grinding on the heated first mixed solution to obtain purified halloysite powder;
according to the solid-liquid mass ratio of 1: 10-30 mixing the purified halloysite powder with a NaOH solution, performing ultrasonic dispersion for 30-60 min, heating in a water bath at 70-90 ℃ for 2-3 h, and sequentially performing suction filtration, washing, drying and grinding on the heated second mixed solution to obtain a halloysite nanotube.
Further optionally, the step of sequentially performing suction filtration, washing, drying and grinding on the mixture in the vacuumized vacuum bottle specifically comprises:
and repeatedly pumping and filtering the mixture in the vacuumized vacuum bottle by using deionized water, washing for 4-6 times, drying the filter cake in a vacuum drying oven at 40-50 ℃ to constant weight, taking out and grinding.
Further optionally, the weight ratio of solid to liquid is 1: 30-50, mixing the halloysite nanotube and a lithium carbonate solution; the concentration of the lithium carbonate solution is 0.05-0.1 mol/L.
Optionally, the time for vacuumizing the vacuum bottle is 1-2 h.
The lithium carbonate-halloysite nanotube comprises a halloysite nanotube and lithium carbonate loaded on the halloysite nanotube, and is prepared by the method.
The invention relates to an application of a lithium carbonate-halloysite nanotube in inhibiting a concrete alkali-aggregate reaction.
Optionally, the method of applying comprises: adding the lithium carbonate-halloysite nanotubes to concrete.
Further optionally, the lithium carbonate-halloysite nanotubes are added into the concrete according to the proportion of 1-5% of the concrete by mass.
Has the advantages that: in the invention, the halloysite nanotube and lithium carbonate are used as raw materials, and a vacuum impregnation method is adopted to prepare the lithium carbonate-halloysite nanotube. The preparation method is mature and stable, simple in reaction process, convenient to operate and easy to process. The lithium carbonate-halloysite nanotube used as a mineral admixture in the concrete has the following advantages:
adding the lithium carbonate-halloysite nanotube into concrete, and firstly, adding the lithium carbonate-halloysite nanotube into the concrete along with the progress of cement hydration reactionFirst, Li in lithium carbonate-halloysite nanotubes+Will gradually precipitate, Li+Can replace K in slurry+、Na+Reacting with silicate material to form non-swelling lithium silicate gel (Li)2SiO3Gel), can hinder the swelling of the sample effectively, thus avoid the generating of the swelling alkali aggregate reaction product, play a role in inhibiting the alkali aggregate reaction of the sample; then, CO in the lithium carbonate-halloysite nanotubes3 2-Will play a role in curing Ca in concrete2+Calcium carbonate is formed in the halloysite nanotubes, resulting in Ca2+The content of the alkali aggregate is reduced, the carbonate reaction in the alkali aggregate reaction is transferred to the halloysite nanotube for carrying out, and the damage of the carbonate reaction to a matrix is reduced; in addition, the halloysite nanotube can also be used as a reinforcing material in concrete, and the strength of the nanotube is improved due to the continuous accumulation of calcium carbonate in the tube body, so that the crack resistance and the mechanical property of the concrete are improved.
Drawings
FIG. 1 is a schematic diagram of the structure of lithium carbonate-halloysite nanotubes in the present invention; wherein 1 is a halloysite nanotube, and 2 is lithium carbonate particles.
Detailed Description
The invention provides a lithium carbonate-halloysite nanotube and a preparation method and application thereof, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a preparation method of a lithium carbonate-halloysite nanotube, wherein the lithium carbonate-halloysite nanotube is prepared by taking the halloysite nanotube and lithium carbonate as raw materials and adopting a vacuum impregnation method.
In one embodiment, the step of preparing the lithium carbonate-halloysite nanotube by using a halloysite nanotube and lithium carbonate as raw materials and using a vacuum impregnation method specifically includes:
s10, preparing halloysite nanotubes;
and S20, mixing the halloysite nanotube and a lithium carbonate solution, ultrasonically dispersing, pouring into a vacuum bottle, vacuumizing the vacuum bottle, and sequentially drying and grinding the mixture in the vacuumized vacuum bottle to obtain the lithium carbonate-halloysite nanotube.
In the embodiment of the invention, the halloysite nanotube and lithium carbonate are used as raw materials, and the lithium carbonate-halloysite nanotube is prepared by adopting a vacuum impregnation method. The preparation method provided by the embodiment of the invention is mature and stable, simple in reaction process, convenient to operate and easy to process. The lithium carbonate-halloysite nanotube used as a mineral admixture in the concrete has the following advantages:
adding the lithium carbonate-halloysite nanotube into concrete, and firstly, Li in the lithium carbonate-halloysite nanotube as the hydration reaction of the cement progresses+Will gradually precipitate, Li+Can replace K in slurry+、Na+Reacting with silicate material to form non-swelling lithium silicate gel (Li)2SiO3Gel), can hinder the swelling of the sample effectively, thus avoid the generating of the swelling alkali aggregate reaction product, play a role in inhibiting the alkali aggregate reaction of the sample; then, CO in the lithium carbonate-halloysite nanotubes3 2-Will play a role in curing Ca in concrete2+Calcium carbonate is formed in the halloysite nanotubes, resulting in Ca2+The content of the alkali aggregate is reduced, the carbonate reaction in the alkali aggregate reaction is transferred to the halloysite nanotube for carrying out, and the damage of the carbonate reaction to a matrix is reduced; in addition, the halloysite nanotube can also be used as a reinforcing material in concrete, and the strength of the nanotube is improved due to the continuous accumulation of calcium carbonate in the tube body, so that the crack resistance and the mechanical property of the concrete are improved.
In step S10, in one embodiment, the step of preparing the halloysite nanotubes specifically includes:
s11, mixing the components in a solid-liquid mass ratio of 1: 20-50 mixing the halloysite powder with an HCl solution, performing ultrasonic dispersion for 30-60 min, then performing water bath heating at 60-80 ℃ for 1-2 h, and sequentially performing suction filtration, washing, drying and grinding on the heated first mixed solution to obtain purified halloysite powder;
s12, mixing the components in a solid-liquid mass ratio of 1: 10-30 mixing the purified halloysite powder with a NaOH solution, performing ultrasonic dispersion for 30-60 min, heating in a water bath at 70-90 ℃ for 2-3 h, and sequentially performing suction filtration, washing, drying and grinding on the heated second mixed solution to obtain a halloysite nanotube.
In one embodiment, step S11 specifically includes:
according to the solid-liquid mass ratio of 1: weighing 20-50 halloysite powder and an HCl solution, placing the halloysite powder and the HCl solution in a polytetrafluoroethylene tank, ultrasonically dispersing for 30-60 min by using an ultrasonic disperser, then placing the tank in a water bath kettle, heating for 1-2 h in water bath at 60-80 ℃, repeatedly carrying out suction filtration on the heated first mixed solution by using deionized water, washing for 4-6 times until the solution is neutral, placing a filter cake in an oven at 70-80 ℃ to dry to constant weight, and grinding to obtain purified halloysite powder. In one embodiment, the concentration of the HCl solution is 3-5 mol/L.
In one embodiment, step S12 specifically includes: according to the solid-liquid mass ratio of 1: 20-30 of weighing purified halloysite powder and a NaOH solution, placing the powder and the NaOH solution in a polytetrafluoroethylene tank, ultrasonically dispersing for 30-60 min by using an ultrasonic disperser, then placing the tank in a water bath kettle, heating for 2-3 h in a water bath at 70-90 ℃, sequentially and repeatedly carrying out suction filtration on the heated second mixed solution by using deionized water, washing for 4-6 times until the solution is neutral, placing a filter cake in a drying oven at 70-80 ℃ to dry to constant weight, and grinding to obtain the alkali-activated halloysite nanotube. In one embodiment, the concentration of the NaOH solution is 3-5 mol/L.
In step S20, in one embodiment, the solid-liquid mass ratio is 1: 30-50, mixing the halloysite nanotube and a lithium carbonate solution; the concentration of the lithium carbonate solution is 0.05-0.1 mol/L.
In one embodiment, the step of sequentially performing suction filtration, washing, drying and grinding on the mixture in the vacuumized vacuum bottle specifically comprises:
and repeatedly pumping and filtering the mixture in the vacuumized vacuum bottle by using deionized water, washing for 4-6 times, drying the filter cake in a vacuum drying oven at 40-50 ℃ to constant weight, taking out and grinding.
In one embodiment, the vacuum bottle is vacuumized for 1 to 2 hours, so that the lithium carbonate solution can be sufficiently impregnated.
In one embodiment, the vacuum used for both vacuum impregnation and vacuum drying is-0.1 mpa to increase the rate of drying and impregnation with the lithium carbonate solution.
The embodiment of the present invention provides a lithium carbonate-halloysite nanotube, as shown in fig. 1, where the lithium carbonate-halloysite nanotube includes a halloysite nanotube 1 and lithium carbonate 2 (in a granular form) loaded on the halloysite nanotube 1, and the lithium carbonate-halloysite nanotube is prepared by the method in the embodiment of the present invention. In the embodiment of the invention, the halloysite nanotube is used as a carrier of lithium carbonate to prepare the lithium carbonate-halloysite nanotube.
The embodiment of the invention provides an application of the lithium carbonate-halloysite nanotube in inhibiting the alkali-aggregate reaction of concrete.
In one embodiment, the method of applying comprises: adding the lithium carbonate-halloysite nanotubes to concrete.
In one embodiment, the lithium carbonate-halloysite nanotubes are added to the concrete in a proportion of 1-5% by mass of the concrete.
The invention is further illustrated by the following specific examples.
First, lithium carbonate-halloysite nanotubes were prepared:
step one, mixing the components in a solid-liquid mass ratio of 1: weighing halloysite powder and 3mol/L HCl solution, placing the halloysite powder and 3mol/L HCl solution in a polytetrafluoroethylene tank, dispersing the solution for 30min by using an ultrasonic disperser, placing the tank in a water bath kettle, setting the temperature to 80 ℃, heating the tank in a water bath for 1h, then repeatedly carrying out suction filtration and washing on the heated mixed solution for 4 times by using deionized water until the solution is neutral, placing a filter cake in an oven at 80 ℃ and drying the filter cake to constant weight, and grinding the filter cake to obtain purified halloysite powder;
step two, mixing the components in a solid-liquid mass ratio of 1: 10 weighing purified halloysite powder and 3mol/L NaOH solution, placing the powder and the NaOH solution into a polytetrafluoroethylene tank, dispersing for 30min by using an ultrasonic disperser, placing the tank into a water bath kettle, setting the temperature to be 90 ℃, heating in a water bath for 2h, then repeatedly carrying out suction filtration and washing on the heated mixed solution for 4 times by using deionized water until the solution is neutral, placing a filter cake into an oven at 80 ℃ and drying to constant weight, and grinding to obtain a halloysite nanotube;
step three, mixing the components in a solid-liquid mass ratio of 1: weighing halloysite nanotubes and 0.05mol/L LiCO by 303Placing the solution in a polytetrafluoroethylene tank, dispersing for 10min by using an ultrasonic disperser, pouring the uniformly mixed solution into a vacuum bottle, vacuumizing for 1h, pouring the solution back into the polytetrafluoroethylene tank again, performing ultrasonic dispersion, vacuumizing by using the vacuum bottle, repeating the process for 3 times, repeatedly performing suction filtration and washing on the mixture for 4 times by using deionized water, placing a filter cake in a vacuum drying box at 40 ℃ to dry to constant weight, and grinding to obtain the lithium carbonate-halloysite nanotube.
Example 1
Mixing cement and standard sand at a mass ratio of 0.45 to water cement (mortar ratio) of 1: 3, preparing cement mortar without doping the lithium carbonate-halloysite nanotubes, wherein the ingredients are shown in table 1; taking the test sample as a control group, performing crack resistance test on cement mortar test pieces by referring to a concrete crack resistance test (a ring method), starting to record time after mortar is poured into a mold, and recording the cracking time of the first test piece and the average cracking time of the first 5 test pieces in the test, wherein the test results are shown in a table 2; by taking the test sample as a control group, mechanical property tests are carried out on cement mortar test pieces according to the standard GB/T50081-2016 of the test method for the mechanical property of common concrete, the test ages are 3d, 7d and 28d, and the test results are shown in Table 3.
Example 2
Mixing cement and standard sand at a mass ratio of 0.45 to water cement (mortar ratio) of 1: 3, doping the lithium carbonate-halloysite nanotube accounting for 1 percent of the mass of the concrete to prepare cement mortar, wherein the ingredients are shown in table 1; the crack resistance test is carried out on cement mortar test pieces by referring to a concrete crack resistance test (a ring method), the time is recorded after the mortar is poured into a mold, the cracking time of the first test piece and the average cracking time of the first 5 test pieces are recorded in the test, and the test results are shown in a table 2; according to the standard GB/T50081-2016 of the mechanical property test method of common concrete, the mechanical property test is carried out on cement mortar test pieces, the test ages are 3d, 7d and 28d, and the test results are shown in Table 3.
Example 3
Mixing cement and standard sand at a mass ratio of 0.45 to water cement (mortar ratio) of 1: 3, doping the lithium carbonate-halloysite nanotube accounting for 2 percent of the mass of the concrete to prepare cement mortar, wherein the ingredients are shown in table 1; the crack resistance test is carried out on cement mortar test pieces by referring to a concrete crack resistance test (a ring method), the time is recorded after the mortar is poured into a mold, the cracking time of the first test piece and the average cracking time of the first 5 test pieces are recorded in the test, and the test results are shown in a table 2; according to the standard GB/T50081-2016 of the mechanical property test method of common concrete, the mechanical property test is carried out on cement mortar test pieces, the test ages are 3d, 7d and 28d, and the test results are shown in Table 3.
Example 4
Mixing cement and standard sand at a mass ratio of 0.45 to water cement (mortar ratio) of 1: 3, doping the lithium carbonate-halloysite nanotube accounting for 5 percent of the mass of the concrete to prepare cement mortar, wherein the ingredients are shown in table 1; the crack resistance test is carried out on cement mortar test pieces by referring to a concrete crack resistance test (a ring method), the time is recorded after the mortar is poured into a mold, the cracking time of the first test piece and the average cracking time of the first 5 test pieces are recorded in the test, and the test results are shown in a table 2; according to the standard GB/T50081-2016 of the mechanical property test method of common concrete, the mechanical property test is carried out on cement mortar test pieces, the test ages are 3d, 7d and 28d, and the test results are shown in Table 3.
TABLE 1 Cement mortar compounding table
TABLE 2 cracking time of mortar test blocks with different amounts of lithium carbonate-halloysite nanotubes
TABLE 3 mechanical strength of mortar test blocks with different amounts of lithium carbonate-halloysite nanotubes
Combining tables 2 and 3, one can see: the lithium carbonate-halloysite nanotube is added into cement mortar, so that the crack resistance, the breaking strength and the compressive strength of concrete can be improved, and the larger the doping amount is, the better the lifting effect is.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A preparation method of a lithium carbonate-halloysite nanotube is characterized in that the lithium carbonate-halloysite nanotube is prepared by taking a halloysite nanotube and lithium carbonate as raw materials and adopting a vacuum impregnation method.
2. The method for preparing the lithium carbonate-halloysite nanotube according to claim 1, wherein the step of preparing the lithium carbonate-halloysite nanotube by using the halloysite nanotube and the lithium carbonate as raw materials and adopting a vacuum impregnation method specifically comprises:
preparing halloysite nanotubes;
and mixing the halloysite nanotube and a lithium carbonate solution, ultrasonically dispersing, pouring into a vacuum bottle, vacuumizing the vacuum bottle, and sequentially drying and grinding the mixture in the vacuumized vacuum bottle to obtain the lithium carbonate-halloysite nanotube.
3. The method for preparing lithium carbonate-halloysite nanotubes according to claim 2, wherein the step of preparing halloysite nanotubes specifically comprises:
according to the solid-liquid mass ratio of 1: 20-50 mixing the halloysite powder with an HCl solution, performing ultrasonic dispersion for 30-60 min, then performing water bath heating at 60-80 ℃ for 1-2 h, and sequentially performing suction filtration, washing, drying and grinding on the heated first mixed solution to obtain purified halloysite powder;
according to the solid-liquid mass ratio of 1: 10-30 mixing the purified halloysite powder with a NaOH solution, performing ultrasonic dispersion for 30-60 min, heating in a water bath at 70-90 ℃ for 2-3 h, and sequentially performing suction filtration, washing, drying and grinding on the heated second mixed solution to obtain a halloysite nanotube.
4. The method for preparing the lithium carbonate-halloysite nanotube as recited in claim 2, wherein the step of sequentially performing suction filtration, washing, drying and grinding on the mixture in the vacuumized vacuum flask comprises:
and repeatedly pumping and filtering the mixture in the vacuumized vacuum bottle by using deionized water, washing for 4-6 times, drying the filter cake in a vacuum drying oven at 40-50 ℃ to constant weight, taking out and grinding.
5. The method for preparing a lithium carbonate-halloysite nanotube according to claim 2, wherein the ratio of solid to liquid is 1: 30-50, mixing the halloysite nanotube and a lithium carbonate solution; the concentration of the lithium carbonate solution is 0.05-0.1 mol/L.
6. The method for preparing lithium carbonate-halloysite nanotubes according to claim 1, wherein the time for vacuuming the vacuum bottle is 1-2 hours.
7. A lithium carbonate-halloysite nanotube comprising halloysite nanotubes and lithium carbonate supported on the halloysite nanotubes, wherein the lithium carbonate-halloysite nanotubes are prepared by the method of any one of claims 1 to 6.
8. Use of the lithium carbonate-halloysite nanotubes of claim 7 to inhibit concrete alkali-aggregate reactions.
9. The application according to claim 8, wherein the method of applying comprises: adding the lithium carbonate-halloysite nanotubes to concrete.
10. The use according to claim 9, wherein the lithium carbonate-halloysite nanotubes are added to the concrete in a proportion of 1-5% by mass of the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110528038.6A CN113429146A (en) | 2021-05-14 | 2021-05-14 | Lithium carbonate-halloysite nanotube and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110528038.6A CN113429146A (en) | 2021-05-14 | 2021-05-14 | Lithium carbonate-halloysite nanotube and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113429146A true CN113429146A (en) | 2021-09-24 |
Family
ID=77802308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110528038.6A Pending CN113429146A (en) | 2021-05-14 | 2021-05-14 | Lithium carbonate-halloysite nanotube and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113429146A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005139030A (en) * | 2003-11-06 | 2005-06-02 | Hojun:Kk | Gel-like clay containing no water, method of manufacturing gel-like clay, and polar organic solvent prepared using gel-like clay and gel-like clay composition dispersed and thickened in polar organic solvent |
| CN1688046A (en) * | 2005-04-06 | 2005-10-26 | 清华大学 | Method for increasing electrochemical lithium storage content of nano-carbon tube |
| US9051216B1 (en) * | 2010-04-20 | 2015-06-09 | Oceanit Laboratories, Inc. | Highly durable composite and manufacturing thereof |
| CN107056123A (en) * | 2017-05-31 | 2017-08-18 | 福建江夏学院 | A kind of concrete activeness and quietness composite and preparation method thereof |
| CN108793817A (en) * | 2018-07-11 | 2018-11-13 | 佛山陵朝新材料有限公司 | A kind of preparation method of airtight dose of concrete |
| CN111952594A (en) * | 2020-08-25 | 2020-11-17 | 中南大学 | Lithiated halloysite lithium-sulfur battery positive electrode material and preparation method thereof |
| CN111960766A (en) * | 2020-08-21 | 2020-11-20 | 顺裕（龙岩）混凝土有限公司 | High-strength recycled concrete and preparation method thereof |
| CN111978055A (en) * | 2020-08-21 | 2020-11-24 | 顺裕（龙岩）混凝土有限公司 | Recycled concrete with excellent impermeability and preparation method thereof |
-
2021
- 2021-05-14 CN CN202110528038.6A patent/CN113429146A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005139030A (en) * | 2003-11-06 | 2005-06-02 | Hojun:Kk | Gel-like clay containing no water, method of manufacturing gel-like clay, and polar organic solvent prepared using gel-like clay and gel-like clay composition dispersed and thickened in polar organic solvent |
| CN1688046A (en) * | 2005-04-06 | 2005-10-26 | 清华大学 | Method for increasing electrochemical lithium storage content of nano-carbon tube |
| US9051216B1 (en) * | 2010-04-20 | 2015-06-09 | Oceanit Laboratories, Inc. | Highly durable composite and manufacturing thereof |
| CN107056123A (en) * | 2017-05-31 | 2017-08-18 | 福建江夏学院 | A kind of concrete activeness and quietness composite and preparation method thereof |
| CN108793817A (en) * | 2018-07-11 | 2018-11-13 | 佛山陵朝新材料有限公司 | A kind of preparation method of airtight dose of concrete |
| CN111960766A (en) * | 2020-08-21 | 2020-11-20 | 顺裕（龙岩）混凝土有限公司 | High-strength recycled concrete and preparation method thereof |
| CN111978055A (en) * | 2020-08-21 | 2020-11-24 | 顺裕（龙岩）混凝土有限公司 | Recycled concrete with excellent impermeability and preparation method thereof |
| CN111952594A (en) * | 2020-08-25 | 2020-11-17 | 中南大学 | Lithiated halloysite lithium-sulfur battery positive electrode material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 王建群: "《混凝土工程》", vol. 1, 31 May 2011, 华中科技大学出版社, pages: 203 - 204 * |
| 郑水林等,中国建材工业出版社: "碳纳米管增强高性能水泥基复合材料制备与性", vol. 1, 辽宁科学技术出版社, pages: 275 - 276 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108569859B (en) | Waterproof and impervious concrete additive with self-repairing function and preparation method thereof | |
| WO2022062493A1 (en) | Building waste burn-free regeneration brick and preparation method thereof | |
| CN110590205B (en) | Geopolymer and preparation method | |
| CN109231904B (en) | Early-strength self-compacting concrete and preparation method thereof | |
| CN112250355A (en) | Alkali-activated fly ash/slag recycled concrete and preparation method thereof | |
| CN107382346B (en) | refractory wear-resistant pouring material and preparation method thereof | |
| CN112723806A (en) | Light heat-preservation high-strength concrete and preparation method thereof | |
| CN111170669A (en) | Artificial recycled aggregate prepared from engineering waste soil and preparation method thereof | |
| CN110078449A (en) | It is a kind of using rinsing the non-burning brick and preparation method thereof of mud preparation that rubble and Machine-made Sand generate | |
| CN111362637A (en) | Cement-based telegraph pole | |
| CN110590249A (en) | Raw material for producing foam concrete and preparation method thereof | |
| CN108529925B (en) | Anti-cracking early strength agent for shield segment concrete and use method thereof | |
| CN113060970A (en) | Concrete water-retaining agent, preparation method thereof and concrete using concrete water-retaining agent | |
| CN113149553A (en) | Light heat-preservation high-strength concrete and preparation method thereof | |
| CN113429146A (en) | Lithium carbonate-halloysite nanotube and preparation method and application thereof | |
| CN112390578A (en) | CNF reinforced steel slag-based geopolymer cementing material, forming body, preparation and application thereof | |
| WO2023109227A1 (en) | Method for preparing plastic concrete with high water-binder ratio | |
| CN115286286B (en) | Efficient water reducing agent for concrete and preparation method thereof | |
| CN115448659B (en) | Solid waste stainless steel slag recycled concrete based on early carbonization and early dry-wet cycle coupling effect and preparation method thereof | |
| CN114580200A (en) | Design method of high-performance recycled aggregate pervious concrete | |
| CN114213075A (en) | Recycled brick powder foam concrete prepared by slurry substitution method and preparation method thereof | |
| CN114573301A (en) | Preparation method of novel composite cement-based grouting material | |
| CN113501691A (en) | High-strength nano silicon dioxide recycled concrete and preparation method thereof | |
| CN108164212A (en) | A kind of C45 graphene oxides concrete and preparation method thereof | |
| CN108793858A (en) | A kind of distributed graphene/cementitious composite building mortar of load and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |