CN116987324A - Preparation method of spheroid toughening nano calcium carbonate particles - Google Patents
Preparation method of spheroid toughening nano calcium carbonate particles Download PDFInfo
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- CN116987324A CN116987324A CN202310931490.6A CN202310931490A CN116987324A CN 116987324 A CN116987324 A CN 116987324A CN 202310931490 A CN202310931490 A CN 202310931490A CN 116987324 A CN116987324 A CN 116987324A
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- calcium carbonate
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 202
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 100
- 239000002245 particle Substances 0.000 title claims abstract description 97
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 23
- 239000002105 nanoparticle Substances 0.000 claims abstract description 22
- 239000004094 surface-active agent Substances 0.000 claims abstract description 19
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000004048 modification Effects 0.000 claims abstract description 9
- 238000012986 modification Methods 0.000 claims abstract description 9
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 239000011787 zinc oxide Substances 0.000 claims abstract description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 28
- 239000002243 precursor Substances 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 17
- 239000012745 toughening agent Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 7
- 239000003431 cross linking reagent Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 150000007524 organic acids Chemical class 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 238000004132 cross linking Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 230000001105 regulatory effect Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The application provides a preparation method of spheroid toughening nano calcium carbonate particles, which relates to the technical field of nano calcium carbonate particle preparation and processing and comprises the following steps: step one: preparing a solution; step two: surface modification; step three: adding a mixing agent; step four: polymerization and curing; step five: and (5) washing and drying. In the application, when preparing the toughening nano calcium carbonate particles, the pH value of the solution is regulated according to different stages, the reaction effect of the toughening nano calcium carbonate particles can be fully improved, the surfactant is added, the dispersibility and stability of the particles can be furthest improved, the properties of the particles are further improved, meanwhile, the zinc oxide nano particles or the silicon dioxide nano particles are added, the improvement of the material properties (such as impact resistance, stretching resistance and the like) can be realized through the synergistic toughening effect, and the service performance of the whole toughening nano calcium carbonate particles is further improved.
Description
Technical Field
The application relates to the technical field of preparation and processing of nano calcium carbonate particles, in particular to a preparation method of spheroid toughening nano calcium carbonate particles.
Background
The calcium carbonate particles are tiny particles composed of calcium carbonate, the calcium carbonate is a common inorganic compound, the calcium carbonate is widely existing in the nature, has diversity, regulation and control, biocompatibility and good chemical stability, has insignificant application in medicine and biomedicine, plastics and rubber industry, paint and coating, paper and printing and building industry, and the toughness and strength of the natural calcium carbonate particles deviate, so that the toughness and strength of the natural calcium carbonate particles are generally improved by adding a toughening agent for reprocessing, but the existing toughening nano calcium carbonate particles only adopt a stirring mode to prepare a calcium carbonate precursor solution in the preparation process, the efficiency is low, and the polymerization or solidification process speed is slow when the toughening agent is added, so that improvement is needed.
Disclosure of Invention
The present application is directed to solving the technical problems set forth in the background art.
The application adopts the following technical scheme: the preparation method of the spheroid toughening nano calcium carbonate particles comprises the following steps:
step one: preparing a solution, namely adding a proper amount of calcium carbonate precursor into a solvent, and fully stirring to obtain a uniform calcium carbonate precursor solution;
step two: surface modification, adding a proper amount of surfactant into a calcium carbonate precursor solution;
step three: adding a mixing agent, namely adding a toughening agent into a calcium carbonate precursor solution;
step four: polymerization and solidification are carried out to promote the mixture to polymerize or solidify and form spheroid toughening nano calcium carbonate particles;
step five: washing and drying, namely washing and drying the prepared toughened nano calcium carbonate particles to obtain the final spherical toughened nano calcium carbonate particles.
Preferably: in the first step, the calcium carbonate precursor includes, but is not limited to, calcium hydroxide or calcium carbonate particles, and the solvent is deionized water. The calcium hydroxide or calcium carbonate particle raw material is easy to obtain, the cost is low, and the deionized water reduces or eliminates ions and minerals dissolved in water, reduces the content of dissolved substances in water, and greatly reduces the pollution of impurities.
Preferably, in the first step, when the solution is stirred, the reaction is promoted by ultrasonic treatment until the solution is completely dissolved or uniformly suspended. Here, the dissolution or suspension effect of the calcium carbonate precursor can be sufficiently improved by the ultrasonic treatment.
Preferably, in the first step, after the solution is mixed, a pH regulator is added to adjust the pH value of the solution to 8-10, and in the fourth step, the pH regulator is added to adjust the pH value of the solution to be neutral in the polymerization curing process. Here, the pH value of the solution is controlled within the range of 8-10, which is more beneficial to promoting the precipitation and growth of the subsequent calcium carbonate particles, further improving the preparation efficiency of the calcium carbonate particles, and adjusting the pH value of the solution to be neutral in the polymerization curing process, thereby being convenient for controlling the particle size of the formed spheroid toughening nano calcium carbonate particles by controlling external parameters (temperature, concentration, reaction time and the like).
Preferably, in the second step, the surfactant includes, but is not limited to, organic acid or phosphate, and is added while stirring. The surfactant can maximally improve the dispersibility and stability of the particles, further improve the properties of the particles, and promote the surfactant to be rapidly dispersed in the solution by adding the surfactant while stirring.
Preferably, in the third step, the toughening agent is made of cellulose or polyvinyl alcohol, and is added while stirring, and meanwhile, when the toughening agent is added, a surfactant, a crosslinking agent or nanoparticles are added. The surfactant, the cross-linking agent or the nano particles can be used as auxiliary agents, so that the morphology and the performance of the particles can be conveniently and further regulated.
Preferably, in the fourth step, polymerization or curing is performed by heat treatment, solvent evaporation, crosslinking, and the like. Here, the polymerization or curing effect of the particles can be sufficiently improved.
Preferably, in the fourth step, the zinc oxide nanoparticles or the silica nanoparticles are uniformly added during the polymerization and curing process. Here, zinc oxide nano particles or silicon dioxide nano particles are added, so that the toughening effect can be synergistically improved, and the material performance can be further improved.
Preferably, in the fifth step, pure water is adopted to circularly wash the prepared toughened nano calcium carbonate particles in the washing process, and the washing frequency is not less than 5 times. Here, pure water is adopted for circulating flushing, so that the toughened nano calcium carbonate particles can be prevented from being polluted by impurities in the flushing process.
Preferably, in the fifth step, the washed toughened nano calcium carbonate particles are dried by low-temperature ventilation and turned periodically in the drying process. Here, adopt low temperature ventilation drying, more energy-concerving and environment-protective, can guarantee the stability of toughening nanometer calcium carbonate granule simultaneously, and periodically turn, can improve the rate of drying.
Compared with the prior art, the application has the advantages and positive effects that,
in the application, when preparing the toughening nano calcium carbonate particles, the pH value of the solution is regulated according to different stages, the reaction effect of the toughening nano calcium carbonate particles can be fully improved, the dispersibility and stability of the particles can be furthest improved, the properties of the particles are further improved, meanwhile, the zinc oxide nano particles or the silicon dioxide nano particles are added, the improvement of the material properties (such as impact resistance, stretch resistance and the like) can be realized through the synergistic toughening effect, and the service performance of the whole toughening nano calcium carbonate particles is further improved.
Drawings
FIG. 1 is a flow chart showing a method for preparing spheroidally toughened nano calcium carbonate particles;
fig. 2 is a schematic drawing showing precipitation of toughened nano calcium carbonate particles in a preparation method of spherical-like toughened nano calcium carbonate particles.
Detailed Description
In order that the above objects, features and advantages of the application will be more clearly understood, a further description of the application will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and therefore the present application is not limited to the specific embodiments of the disclosure that follow.
Unless otherwise indicated, the reagents, methods and apparatus employed in the present application are those conventionally practiced in the art.
Examples
Referring to fig. 1-2, the present application provides a technical solution: the preparation method of the spheroid toughening nano calcium carbonate particles comprises the following steps:
step one: preparing a solution, namely adding a proper amount of calcium carbonate precursor into a solvent, fully stirring to obtain a uniform calcium carbonate precursor solution, and adding a pH regulator to adjust the pH value of the solution to 8-10 after the solution is mixed;
step two: surface modification, adding a proper amount of surfactant into a calcium carbonate precursor solution;
step three: adding a mixing agent, namely adding a toughening agent into a calcium carbonate precursor solution;
step four: polymerization and solidification, adding a pH regulator to adjust the pH value of the solution to be neutral, promoting the mixture to polymerize or solidify, and forming spherical-like toughening nano calcium carbonate particles;
step five: washing and drying, namely washing and drying the prepared toughened nano calcium carbonate particles to obtain the final spherical toughened nano calcium carbonate particles.
In the application, when preparing the toughening nano calcium carbonate particles, the pH value of the solution is regulated according to different stages, the reaction effect of the toughening nano calcium carbonate particles can be fully improved, the dispersibility and stability of the particles can be furthest improved, the properties of the particles are further improved, meanwhile, the zinc oxide nano particles or the silicon dioxide nano particles are added, the improvement of the material properties (such as impact resistance, stretch resistance and the like) can be realized through the synergistic toughening effect, and the service performance of the whole toughening nano calcium carbonate particles is further improved.
In the first step, the reaction is promoted by adopting ultrasonic treatment until the solution is completely dissolved or uniformly suspended when the solution is stirred, and the dissolution or suspension effect of the calcium carbonate precursor can be fully improved by adopting ultrasonic treatment.
In the second step, the surfactant comprises but is not limited to organic acid or phosphate, the surfactant is added while stirring, the dispersibility and stability of the particles can be improved to the greatest extent, the properties of the particles can be further improved, meanwhile, the surfactant can be promoted to be rapidly dispersed in the solution by stirring and adding, in the third step, the toughening agent is made of cellulose or polyvinyl alcohol, and is added while stirring, meanwhile, when the toughening agent is added, the surfactant, the cross-linking agent or the nano particles can be added as an auxiliary agent, the morphology and the properties of the particles can be conveniently and further regulated, in the fourth step, the polymerization or the curing effect of the particles can be fully improved by adopting modes such as heat treatment, solvent volatilization and cross-linking, and in the fourth step, the zinc oxide nano particles or the silicon dioxide nano particles are uniformly added in the polymerization curing process, and the toughening effect can be further improved.
In the fifth step, the prepared toughening nano calcium carbonate particles are circularly washed by pure water in the washing process, the washing times are not less than 5 times, the pure water is used for circularly washing, the toughening nano calcium carbonate particles can be prevented from being polluted by impurities in the washing process, in the fifth step, the washed toughening nano calcium carbonate particles are periodically turned by low-temperature ventilation drying and in the drying process, the low-temperature ventilation drying is adopted, the energy is saved, the environment is protected, the stability of the toughening nano calcium carbonate particles can be ensured, the turning is performed periodically, and the drying rate can be improved.
Example 1
Taking calcium carbonate particles as a calcium carbonate precursor,
step one: adding a proper amount of calcium carbonate particles into deionized water, fully stirring, carrying out ultrasonic treatment to obtain a uniform calcium carbonate particle solution, adding a pH regulator to adjust the pH value of the solution after the solution is mixed, and testing the pH value of the solution to be 8;
step two: the surface modification, adding proper amount of organic acid into the uniform calcium carbonate particle solution can maximally improve the dispersibility and stability of the particles and further improve the properties of the particles;
step three: adding a mixing agent, namely adding a toughening agent (cellulose or polyvinyl alcohol) into a calcium carbonate particle solution, stirring and adding the toughening agent, and adding a surfactant, a cross-linking agent or nano particles when the toughening agent is added, so that the morphology and the performance of the particles can be regulated and controlled conveniently;
step four: polymerization curing, adding a pH regulator to adjust the pH value of the solution to be neutral, uniformly adding zinc oxide nano particles, and adopting heat treatment to promote the mixture to polymerize or cure and form spheroid toughening nano calcium carbonate particles;
step five: washing and drying, namely circularly flushing the prepared toughening nano calcium carbonate particles by adopting pure water, drying the washed toughening nano calcium carbonate particles by using low-temperature ventilation, and periodically turning over in the drying process, so that the final spheroidal toughening nano calcium carbonate particles can be obtained after the drying is finished.
Example two
Calcium hydroxide is used as a precursor of calcium carbonate,
step one: adding a proper amount of calcium hydroxide into deionized water, fully stirring, carrying out ultrasonic treatment to obtain a uniform calcium hydroxide solution, adding a pH regulator to adjust the pH value of the solution after the solution is mixed, and testing the pH value of the solution to be 10;
step two: the surface modification, adding a proper amount of phosphate into the uniform calcium hydroxide solution can maximally improve the dispersibility and stability of the particles, and further improve the properties of the particles;
step three: adding a mixing agent, namely adding a toughening agent (cellulose or polyvinyl alcohol) into a calcium hydroxide solution while stirring, and simultaneously adding a surfactant, a cross-linking agent or nano particles when the toughening agent is added, so that the morphology and the performance of the particles can be regulated and controlled conveniently;
step four: polymerization curing, adding a pH regulator to adjust the pH value of the solution to be neutral, uniformly adding the solution into silicon dioxide nano particles, and adopting heat treatment to promote the mixture to polymerize or cure and form spheroid toughening nano calcium carbonate particles;
step five: washing and drying, namely circularly flushing the prepared toughening nano calcium carbonate particles by adopting pure water, drying the washed toughening nano calcium carbonate particles by using low-temperature ventilation, and periodically turning over in the drying process, so that the final spheroidal toughening nano calcium carbonate particles can be obtained after the drying is finished.
Working principle: when the spherical toughening nano calcium carbonate particles are prepared, firstly, solution preparation is carried out, a proper amount of calcium carbonate precursor is added into a solvent, and fully stirring is carried out to obtain a uniform calcium carbonate precursor solution, then, a proper amount of surfactant is added into the calcium carbonate precursor solution for surface modification, then, a toughening agent is added into the calcium carbonate precursor solution, then, the mixture is promoted to polymerize or solidify, and spherical toughening nano calcium carbonate particles are formed, and finally, the prepared toughening nano calcium carbonate particles are washed and dried to obtain the final spherical toughening nano calcium carbonate particles.
The present application is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present application without departing from the technical content of the present application still belong to the protection scope of the technical solution of the present application.
Claims (10)
1. The preparation method of the spherical-like toughened nano calcium carbonate particles is characterized by comprising the following steps of:
step one: preparing a solution, namely adding a proper amount of calcium carbonate precursor into a solvent, and fully stirring to obtain a uniform calcium carbonate precursor solution;
step two: surface modification, adding a proper amount of surfactant into a calcium carbonate precursor solution;
step three: adding a mixing agent, namely adding a toughening agent into a calcium carbonate precursor solution;
step four: polymerization and solidification are carried out to promote the mixture to polymerize or solidify and form spheroid toughening nano calcium carbonate particles;
step five: washing and drying, namely washing and drying the prepared toughened nano calcium carbonate particles to obtain the final spherical toughened nano calcium carbonate particles.
2. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the first step, the calcium carbonate precursor includes, but is not limited to, calcium hydroxide or calcium carbonate particles, and the solvent is deionized water.
3. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the first step, when the solution is stirred, ultrasonic treatment is adopted to promote the reaction until the solution is completely dissolved or uniformly suspended.
4. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the first step, after the solution is mixed, a pH regulator is added to regulate the pH value of the solution to 8-10, and in the fourth step, the pH regulator is added to regulate the pH value of the solution to be neutral in the polymerization curing process.
5. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the second step, the surfactant includes, but is not limited to, organic acid or phosphate, and is added while stirring.
6. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the third step, the toughening agent is made of cellulose or polyvinyl alcohol, and is added while stirring, and meanwhile, when the toughening agent is added, a surfactant, a crosslinking agent or nanoparticles are added.
7. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the fourth step, polymerization or curing is performed by adopting modes such as heat treatment, solvent volatilization, crosslinking and the like.
8. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the fourth step, zinc oxide nanoparticles or silicon dioxide nanoparticles are uniformly added in the polymerization and curing process.
9. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the fifth step, pure water is adopted to circularly wash the prepared toughened nano calcium carbonate particles in the washing process, and the washing times are not less than 5 times.
10. The method for preparing the spheroid toughening nano calcium carbonate particles according to claim 1, wherein the method comprises the following steps: in the fifth step, the washed toughened nano calcium carbonate particles are dried by low-temperature ventilation and are turned over periodically in the drying process.
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| CN202310931490.6A CN116987324A (en) | 2023-07-27 | 2023-07-27 | Preparation method of spheroid toughening nano calcium carbonate particles |
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| CN202310931490.6A CN116987324A (en) | 2023-07-27 | 2023-07-27 | Preparation method of spheroid toughening nano calcium carbonate particles |
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Application publication date: 20231103 |