CN114106621A - Preparation method of high-suspensibility organic matter-montmorillonite-calcium carbonate multi-element composite colloid - Google Patents
Preparation method of high-suspensibility organic matter-montmorillonite-calcium carbonate multi-element composite colloid Download PDFInfo
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 176
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 115
- 239000000084 colloidal system Substances 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 19
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000005416 organic matter Substances 0.000 claims abstract description 7
- 238000005119 centrifugation Methods 0.000 claims abstract description 5
- 238000010907 mechanical stirring Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 11
- 239000001509 sodium citrate Substances 0.000 claims description 5
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract description 32
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- -1 sodium styrene sulfonate-polyethylene glycol monomethyl ether Chemical compound 0.000 description 18
- 239000004698 Polyethylene Substances 0.000 description 17
- 229920000573 polyethylene Polymers 0.000 description 17
- 238000005303 weighing Methods 0.000 description 12
- 239000006185 dispersion Substances 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 238000003760 magnetic stirring Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000009210 therapy by ultrasound Methods 0.000 description 6
- 239000002105 nanoparticle Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 244000307697 Agrimonia eupatoria Species 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 235000000125 common agrimony Nutrition 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 230000005476 size effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002538 Polyethylene Glycol 20000 Polymers 0.000 description 1
- 229920001030 Polyethylene Glycol 4000 Polymers 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 235000013527 bean curd Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003966 growth inhibitor Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002523 polyethylene Glycol 1000 Polymers 0.000 description 1
- 229940113116 polyethylene glycol 1000 Drugs 0.000 description 1
- 229940057838 polyethylene glycol 4000 Drugs 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 150000007519 polyprotic acids Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 150000003385 sodium Chemical class 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000002881 soil fertilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
-
- 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
- C08K9/10—Encapsulated ingredients
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Colloid Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention discloses a preparation method of a high-suspensibility organic matter-montmorillonite-calcium carbonate multi-element composite colloid, which comprises the following steps: adding calcium carbonate and montmorillonite into water, performing ultrasonic and mechanical stirring treatment, then adding organic matters, and sequentially performing shaking table vibration, centrifugation and drying to obtain the organic matter-montmorillonite-calcium carbonate multi-component composite colloid; according to the invention, the excellent suspension property of montmorillonite and the steric hindrance effect generated by polyethylene glycol coating are utilized to promote the suspension property and suspension stability of calcium carbonate in water; the organic matter-montmorillonite-calcium carbonate multi-element composite colloid prepared by the invention has high suspension property, and the mass ratio of the organic matter to the sum of the montmorillonite and the calcium carbonate and the mass ratio of the calcium carbonate to the montmorillonite can be changed according to different use requirements, and different organic matters are selected to improve the applicability to different requirements.
Description
Technical Field
The invention relates to a preparation method of a high-suspensibility organic matter-montmorillonite-calcium carbonate multi-element composite colloid.
Background
The colloid is ubiquitous in nature, and can be used for soil fertilizer preservation, mineral separation in metallurgical industry, bean curd production, colored glass production, and mechanical property improvement of metal, ceramic, etc. The high-suspension colloid has large specific surface area and strong adsorption property, and is applied to food production, agricultural production, metallurgical industry, national defense industry, energy conservation, environmental protection, biological medicine and high-performance medical equipment. The nanoparticles as dispersoids are in a thermodynamically very unstable state due to large specific surface area and high surface energy, and are easily agglomerated. The preparation of highly suspended colloids is the basis for dispersing and developing the original properties of ultrafine and nanoparticles in application systems.
The preparation of highly suspended colloids generally involves physical and chemical methods. The physical method is mainly to disperse the nanoparticles in the medium by mechanical force action (such as ball milling, stirring, ultrasound, etc.), and the method can generally only prepare the substances with colloidal properties. The chemical method is to enhance the stability of the dispersed nano particles by adding a dispersing agent and prevent re-agglomeration. The nanometer calcium carbonate is ultra-fine, so that the quantum size effect, small size effect, surface effect and macroscopic quantum tunneling effect which are not possessed by common calcium carbonate are generated, and the nanometer calcium carbonate is widely applied to the fields of rubber, plastics, papermaking, coatings, printing ink, daily necessities, medicines, food and the like. However, the nano calcium carbonate is in a thermodynamically extremely unstable state due to its large specific surface area and high specific surface energy, and is easily agglomerated, and it is difficult to prepare a highly suspended colloid. The literature reports that the Adsorption of Sodium dodecyl benzene sulfonate on the surface of nano calcium carbonate improves the dispersion performance of nano calcium carbonate in water, and when the addition amount of the Sodium dodecyl benzene sulfonate is between 0.5g/L and 2g/L and the pH is about 9, stable dispersion can be obtained (Mingqi IAO Ge, Wenyu Liang, addition of Sodium Dodecyl Benzene Sulfonate (SDBS) on Nanosized CaCO3and Dispersion of Nanosized CaCO3in Water, Journal of Dispersion Science and Technology, 2010, 31: 1157-. The super-dispersant prepared by adding aqueous solution polymerization method, namely sodium styrene sulfonate-polyethylene glycol monomethyl ether acrylate-dimethylamino acrylate, improves the dispersing ability of the light calcium carbonate (plum, hairyvein agrimony, hairy vein agrimony, CaCO)3Synthesis and process optimization of dispersants, chemical industry and engineering, 2021, 38: 36-42). The invention patent 201910764385.1 discloses a high-dispersity nano carbonate gel and a preparation method and application thereof, wherein conventional reagents such as polyol, polybasic acid, metal salt, carbonate and the like are used as raw materials, a nano grain growth inhibitor is added after primary solution polymerization reaction, and the modified nano carbonate gel is prepared at the temperature of 60-70 ℃, and the nano particles in the prepared nano carbonate gel have good dispersion effect. The invention patent 201910247253.1 discloses a preparation method of low surface energy monodisperse nano calcium carbonate, which comprises the steps of carrying out surface depolymerization on carbonized agglomerated particles through an aging agent, adsorbing small molecules on the surface of calcium carbonate, and then carrying out grafting and steric hindrance effect by using a long carbon chain surface modifier to obtain the monodisperse nano calcium carbonate. The invention patent 202011416922.2 discloses a preparation method of special nano calcium carbonate for water-based paint, which adopts the mixture of sodium tripolyphosphate, sodium dimer, zinc sulfate and sucrose as a crystal form control agent, and the mixture of rosinyl tri-quaternary ammonium salt, phenyl triethoxysilane and polyethylene glycol as a modifier, and the prepared special nano calcium carbonate for water-based paint has good suspension property and storage stability through carbonization, surface modification and depolymerization. However, these preparation methods have some disadvantages that the prepared colloid maintains stable dispersion for a short time, the preparation process of the colloid is complicated, and organic molecules destroy the surface structure of the colloid.
In the prior art, the inorganic particles of the colloid system only contain calcium carbonate, and the function is single. The invention discloses an organic matter-montmorillonite-calcium carbonate multi-element composite colloid with excellent suspension property of a montmorillonite sheet layer and steric hindrance generated by polyethylene glycol coated calcium carbonate, wherein the system can form a high-suspension property and form a composite colloid system containing organic matter, calcium carbonate and montmorillonite, and the colloid has high suspension property and can be applied to the fields of papermaking, water-based paint, medicine and the like.
Disclosure of Invention
The invention provides a preparation method of a novel high-suspensibility organic matter-montmorillonite-calcium carbonate multi-element composite colloid.
The technical scheme of the invention is as follows:
a preparation method of an organic matter-montmorillonite-calcium carbonate multi-component composite colloid comprises the following steps:
adding calcium carbonate and montmorillonite into water, performing ultrasonic and mechanical stirring treatment, then adding organic matters, and sequentially performing shaking table vibration, centrifugation and drying to obtain the organic matter-montmorillonite-calcium carbonate multi-component composite colloid;
the mass ratio of the calcium carbonate to the montmorillonite is 1: 9-9: 1;
the ratio of the mass of the organic matter to the total mass of the calcium carbonate and the montmorillonite is 1: 10-1: 2;
the ratio of the volume consumption of the water to the total mass of the calcium carbonate and the montmorillonite is 100 mL: 2g of the total weight of the mixture;
the organic matter is selected from polyethylene glycol, sodium citrate or sodium dodecyl sulfate, and the molecular weight of the polyethylene glycol is 1000, 2000, 4000, 6000, 10000 or 20000;
the frequency of the ultrasonic wave is 400HZ, and the time is 2 h;
the mechanical stirring power is 20W, and the time is 1 h;
the shaking temperature of the shaking table is 90 ℃, the speed is 110rpm, and the time is 2 h;
the speed of the centrifugation is 13000rpm, and the time is 20 min;
the drying temperature is 80 ℃, and the drying time is 12 h.
The invention has the beneficial effects that:
the invention utilizes the excellent suspension property of montmorillonite and the steric hindrance effect generated by polyethylene glycol coating to promote the suspension property and suspension stability of calcium carbonate in water. The organic matter-montmorillonite-calcium carbonate multi-element composite colloid prepared by the invention has high suspension property, and the mass ratio of the organic matter to the sum of the montmorillonite and the calcium carbonate and the mass ratio of the calcium carbonate to the montmorillonite can be changed according to different use requirements, and different organic matters are selected to improve the applicability to different requirements.
Detailed Description
The invention is further described below by means of specific examples, without the scope of protection of the invention being limited thereto.
In the following examples, the dispersion property of the prepared highly suspended organic matter-montmorillonite-calcium carbonate multi-component composite colloid was evaluated by adding it to water, and the specific experiments were as follows:
0.2g of calcium carbonate (for comparison) and a highly suspended organic material-montmorillonite-calcium carbonate multi-component composite colloid were weighed in 10mL of water, and the suspended state was observed.
Example 1
Weighing 1g of calcium carbonate and 1g of montmorillonite in 100mL of deionized water, then carrying out ultrasonic treatment on the montmorillonite-calcium carbonate suspension for 2 hours, and carrying out magnetic stirring for 1 hour; weighing 0.2g of polyethylene glycol-1000, adding into the montmorillonite-calcium carbonate suspension, shaking for 2h at 90 ℃ under 110rmp in a shaking table, centrifuging for 20min at 13000r, and drying in an oven at 80 ℃ for 12h to obtain the polyethylene glycol-montmorillonite-calcium carbonate multi-element composite colloid.
0.2g of calcium carbonate and 0.2g of polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid are respectively weighed in 10mL of water, the calcium carbonate suspension is completely precipitated after 5min, and the polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid still presents a suspended state after being placed for 10 d.
The mass ratio of the polyethylene glycol to the sum of montmorillonite and calcium carbonate is 1: 10, the mass ratio of calcium carbonate to montmorillonite is 1: polyethylene glycol has a molecular weight of 1000.
Example 2
Weighing 1g of calcium carbonate and 1g of montmorillonite in 100mL of deionized water, then carrying out ultrasonic treatment on the montmorillonite-calcium carbonate suspension for 2 hours, and carrying out magnetic stirring for 1 hour; weighing 1g of polyethylene glycol-2000, adding into the montmorillonite-calcium carbonate suspension, shaking for 2h in a shaking table at 90 ℃ and 110rmp, centrifuging for 20min at 13000r, and drying in an oven at 80 ℃ for 12h to obtain the polyethylene glycol-montmorillonite-calcium carbonate multi-element composite colloid.
0.2g of calcium carbonate and 0.2g of polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid are respectively weighed in 10mL of water, the calcium carbonate suspension is completely precipitated after 5min, and the polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid still presents a turbid state after being placed for 10 d.
The mass ratio of the polyethylene glycol to the sum of montmorillonite and calcium carbonate is 1: 2, the mass ratio of calcium carbonate to montmorillonite is 1: polyethylene glycol has a molecular weight of 2000.
Example 3
Weighing 1g of calcium carbonate and 1g of montmorillonite in 100mL of deionized water, then carrying out ultrasonic treatment on the montmorillonite-calcium carbonate suspension for 2 hours, and carrying out magnetic stirring for 1 hour; weighing 0.6g of polyethylene glycol-20000, adding into the montmorillonite-calcium carbonate suspension, shaking for 2h at 90 deg.C under 110rmp, centrifuging at 13000r for 20min, and drying in an oven at 80 deg.C for 12h to obtain polyethylene glycol-montmorillonite-calcium carbonate multi-element composite colloid.
0.2g of calcium carbonate and 0.2g of polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid are respectively weighed in 10mL of water, the calcium carbonate suspension is completely precipitated after 5min, and the polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid still presents a turbid state after being placed for 10 d.
The mass ratio of the polyethylene glycol to the sum of montmorillonite and calcium carbonate is 3: 10, the mass ratio of calcium carbonate to montmorillonite is 1:1, the molecular weight of the polyethylene glycol is 20000.
Example 4
Weighing 0.2g of calcium carbonate and 1.8g of montmorillonite in 100mL of deionized water, then carrying out ultrasonic treatment on the montmorillonite-calcium carbonate suspension for 2 hours, and carrying out magnetic stirring for 1 hour; weighing 0.6g of polyethylene glycol-10000, adding into the montmorillonite-calcium carbonate suspension, shaking for 2h at 90 ℃ under 110rmp in a shaking table, centrifuging for 20min at 13000r, and drying in an oven at 80 ℃ for 12h to obtain the polyethylene glycol-montmorillonite-calcium carbonate multi-element composite colloid.
0.2g of calcium carbonate and 0.2g of polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid are respectively weighed in 10mL of water, the calcium carbonate suspension is completely precipitated after 5min, and the polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid still presents a turbid state after being placed for 10 d.
The mass ratio of the polyethylene glycol to the sum of montmorillonite and calcium carbonate is 3: 10, the mass ratio of calcium carbonate to montmorillonite is 1:1, the molecular weight of polyethylene glycol is 10000.
Example 5
Weighing 0.2g of calcium carbonate and 1.8g of montmorillonite in 100mL of deionized water, then carrying out ultrasonic treatment on the montmorillonite-calcium carbonate suspension for 2 hours, and carrying out magnetic stirring for 1 hour; weighing 1g of polyethylene glycol-4000, adding into the montmorillonite-calcium carbonate suspension, shaking for 2h at 90 ℃ under 110rmp in a shaking table, centrifuging for 20min at 13000r, and drying in an oven at 80 ℃ for 12h to obtain the polyethylene glycol-montmorillonite-calcium carbonate multi-element composite colloid.
0.2g of calcium carbonate and 0.2g of polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid are respectively weighed in 10mL of water, the calcium carbonate suspension is completely precipitated after 5min, and the polyethylene glycol-montmorillonite-calcium carbonate multi-component composite colloid still presents a turbid state after being placed for 10 d.
The mass ratio of the polyethylene glycol to the sum of montmorillonite and calcium carbonate is 1: 2, the mass ratio of calcium carbonate to montmorillonite is 1:1, the molecular weight of polyethylene glycol is 4000.
Example 6
Weighing 1g of calcium carbonate and 1g of montmorillonite in 100mL of deionized water, then carrying out ultrasonic treatment on the montmorillonite-calcium carbonate suspension for 2 hours, and carrying out magnetic stirring for 1 hour; weighing 0.6g of sodium citrate, adding the sodium citrate into the montmorillonite-calcium carbonate suspension, shaking the mixture for 2h in a shaking table at 90 ℃ and 110rmp, centrifuging the mixture for 20min at 13000r, and then drying the mixture in an oven at 80 ℃ for 12h to obtain the sodium citrate-montmorillonite-calcium carbonate multi-component composite colloid.
0.2g of calcium carbonate and 0.2g of sodium citrate-montmorillonite-calcium carbonate multi-component composite colloid are respectively weighed in 10mL of water, the calcium carbonate suspension is completely precipitated after 5min, and the sodium citrate-montmorillonite-calcium carbonate multi-component composite colloid suspension still presents a turbid state after being placed for 10 d.
The mass ratio of the sodium citrate to the sum of the montmorillonite and the calcium carbonate is 3: 10, the mass ratio of calcium carbonate to montmorillonite is 1: 1.
table 1: EXAMPLES suspensibility results
Claims (8)
1. The preparation method of the organic matter-montmorillonite-calcium carbonate multi-element composite colloid is characterized by comprising the following steps:
adding calcium carbonate and montmorillonite into water, performing ultrasonic and mechanical stirring treatment, then adding organic matters, and sequentially performing shaking table vibration, centrifugation and drying to obtain the organic matter-montmorillonite-calcium carbonate multi-component composite colloid;
the mass ratio of the calcium carbonate to the montmorillonite is 1: 9-9: 1;
the ratio of the mass of the organic matter to the total mass of the calcium carbonate and the montmorillonite is 1: 10-1: 2;
the organic matter is selected from polyethylene glycol, sodium citrate or sodium dodecyl sulfate.
2. The method for preparing the organic matter-montmorillonite-calcium carbonate multi-component composite colloid according to claim 1, wherein the ratio of the volume usage of the water to the total mass of the calcium carbonate and the montmorillonite is 100 mL: 2g of the total weight.
3. The method for preparing the organic-montmorillonite-calcium carbonate multi-component composite colloid according to claim 1, wherein the molecular weight of the polyethylene glycol is 1000, 2000, 4000, 6000, 10000 or 20000.
4. The method of preparing the organic matter-montmorillonite-calcium carbonate multi-component composite colloid according to claim 1, wherein the frequency of the ultrasonic wave is 400HZ, and the time is 2 hours.
5. The method for preparing the organic matter-montmorillonite-calcium carbonate multi-component composite colloid according to claim 1, wherein the mechanical stirring power is 20W and the time is 1 h.
6. The method for preparing the organic matter-montmorillonite-calcium carbonate multi-component composite colloid according to claim 1, wherein the shaking table is vibrated at 90 ℃, 110rpm and 2 hours.
7. The method for preparing the organic matter-montmorillonite-calcium carbonate multi-component composite colloid according to claim 1, wherein the centrifugation speed is 13000rpm and the time is 20 min.
8. The method for preparing the organic matter-montmorillonite-calcium carbonate multi-component composite colloid according to claim 1, wherein the drying temperature is 80 ℃ and the drying time is 12 hours.
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| CN116731397A (en) * | 2023-07-20 | 2023-09-12 | 浙江钦堂钙业有限公司 | Modified shell-core structure calcium carbonate with flame retardant function |
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