CN112063220A - Titanium dioxide efficient dispersant and preparation method thereof - Google Patents
Titanium dioxide efficient dispersant and preparation method thereof Download PDFInfo
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- CN112063220A CN112063220A CN202010921201.0A CN202010921201A CN112063220A CN 112063220 A CN112063220 A CN 112063220A CN 202010921201 A CN202010921201 A CN 202010921201A CN 112063220 A CN112063220 A CN 112063220A
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000002270 dispersing agent Substances 0.000 title claims abstract description 68
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 29
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229940102253 isopropanolamine Drugs 0.000 claims abstract description 17
- 229960004063 propylene glycol Drugs 0.000 claims abstract description 17
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 17
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 17
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 17
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 10
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 10
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 10
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims abstract description 9
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000000243 solution Substances 0.000 claims description 21
- 239000003999 initiator Substances 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000003472 neutralizing effect Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 3
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 17
- 239000002002 slurry Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 3
- 238000001238 wet grinding Methods 0.000 abstract description 3
- 238000005411 Van der Waals force Methods 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 239000003973 paint Substances 0.000 description 5
- 238000004537 pulping Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000011163 secondary particle Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Classifications
-
- 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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F226/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
- C08F226/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a single or double bond to nitrogen
- C08F226/04—Diallylamine
-
- 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
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/65—Additives macromolecular
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
A titanium dioxide efficient dispersant and a preparation method thereof are disclosed, which comprises the following components in parts by weight: 45-85 parts of sodium hexametaphosphate, 15-35 parts of isopropanolamine, 13-20 parts of polycarboxylate dispersant, 5-8 parts of 1, 2-propylene glycol and 2-6 parts of polyvinylpyrrolidone; according to the invention, the polycarboxylate dispersant is added into the titanium dioxide dispersant, the polycarboxylate dispersant has a strong space stabilization effect, and the polymer dispersant has a plurality of anchoring points, so that a large adsorption capacity can be achieved under the condition of a relatively low-quality dispersant; dimethyl diallyl ammonium chloride is introduced into the high molecular dispersing agent, copolymerized with sodium allylsulfonate and maleic anhydride, and quaternary ammonium group is introduced into the polymer, so that the high molecular dispersing agent has extremely strong polarity, can be anchored on the surfaces of particles through van der Waals force, hydrogen bonds, ionic bonds and the like, electrostatic repulsive force can be generated between the particles, and the particles are prevented from approaching each other, so that the high molecular dispersing agent also has a good viscosity reduction effect, is pulped and dispersed before wet grinding, has the slurry concentration of 800-.
Description
Technical Field
The invention belongs to the field of titanium dioxide production, and particularly relates to a titanium dioxide efficient dispersant and a preparation method thereof.
Background
With the continuous development of the economy of China, the demand on titanium dioxide is continuously increased, the capacity of the titanium dioxide in China accounts for about 30 percent of the world, is the largest titanium dioxide producing country in the world, is also the largest titanium dioxide consuming country in the world, and runs away from the world titanium dioxide industry with absolute advantages; today, the water-based environment-friendly paint is increasingly concerned by people, titanium dioxide is used as a high-quality white pigment and widely applied to the paint industry, and water dispersibility is an important application performance index of the titanium dioxide in the water-based paint industry, and the advantages and disadvantages of the titanium dioxide directly influence the paint performances such as covering power, dispersibility, weather resistance, glossiness and the like; because the number of molecules on the surface of the particles is in a relatively large proportion to the number of molecules in the particles, the molecules exposed on the surface of the particles are in non-uniform force field, the surface of the pigment particles has high energy and is in an unstable state, so that the pigment particles have larger surface free energy than general solids and tend to agglomerate into secondary particles or tertiary particles, the titanium dioxide coating is not uniformly coated on the surface of each particle without full pulping, wet grinding and classification, the formed film is on the surface of coarse particles, secondary particles or tertiary particles, when the titanium dioxide coating is pulverized by airflow, the coated particles are further broken or depolymerized, and the product is actually in a state that the surface is not completely coated, so that the performance of the product is influenced.
The traditional dispersing agent generally adopts a single phosphate dispersing agent to control the slurry concentration of wet-milled titanium dioxide to be 600-1000g/L, but in the actual production process, because the dispersing effect of the used dispersing agent is not ideal, the slurry concentration is up to 600g/L, the viscosity of the slurry is very high, the concentration cannot be continuously increased, the feeding of a sand mill is difficult, and the dispersing effect is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a titanium dioxide high-efficiency dispersing agent which comprises the following components in parts by weight: 45-85 parts of sodium hexametaphosphate, 15-35 parts of isopropanolamine, 13-20 parts of polycarboxylate dispersant, 5-8 parts of 1, 2-propylene glycol and 2-6 parts of polyvinylpyrrolidone.
Preferably, the preparation method of the polycarboxylate dispersant is as follows: (1) respectively adding 25-35 parts of dimethyldiallylammonium chloride, 12-16 parts of maleic anhydride and 35-50 parts of water into a reaction kettle, and heating to 45-60 ℃ for dissolution; (2) dissolving 14-28 parts of sodium allylsulfonate in 26-38 parts of water, dissolving 0.2-0.4 part of initiator in 10-15 parts of water, heating the reaction kettle to 60-75 ℃, respectively dropwise adding the sodium allylsulfonate solution and the initiator solution into the reaction kettle for 2-2.5h, preserving heat for 3-5h, adding a neutralizer after the reaction is finished, and neutralizing the pH value of the solution to 6-7 to obtain the polycarboxylate dispersant.
Preferably, the paint comprises the following components in parts by weight: 55 parts of sodium hexametaphosphate, 22 parts of isopropanolamine, 18 parts of polycarboxylate dispersant, 7 parts of 1, 2-propylene glycol and 2 parts of polyvinylpyrrolidone.
Preferably, the initiator is ammonium persulfate, sodium persulfate or ammonium persulfate-sodium bisulfite.
Preferably, the neutralizing agent is sodium hydroxide aqueous solution with the mass concentration of 20-35%.
A preparation method of a titanium dioxide high-efficiency dispersing agent comprises the following steps: adding a certain amount of water into a reaction kettle, adding sodium hexametaphosphate, isopropanolamine and 1, 2-propylene glycol according to parts by weight, stirring at 600rpm of 400-.
Has the advantages that:
according to the invention, a polycarboxylate dispersing agent is added into the titanium dioxide dispersing agent, the polycarboxylate dispersing agent has a stronger space stabilizing effect, and compared with a micromolecule dispersing agent with a single anchoring group, the polycarboxylate dispersing agent has a plurality of anchoring points, so that a larger adsorption capacity can be achieved under the condition of a relatively lower-quality dispersing agent; dimethyl diallyl ammonium chloride is introduced into a high molecular dispersing agent, copolymerized with sodium allylsulfonate and maleic anhydride, and quaternary ammonium group is introduced into a polymer, so that the high molecular dispersing agent has extremely strong polarity, can be anchored on the surfaces of particles through van der Waals force, hydrogen bonds, ionic bonds and the like, can generate electrostatic repulsive force among the particles, and prevents the particles from approaching each other, thereby having a good viscosity reduction effect, pulping and dispersing before wet grinding, wherein the concentration of slurry can reach 1600g/l, and the slurry has good fluidity.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
Example 1
The titanium dioxide efficient dispersant is characterized by comprising the following components in parts by weight: 55 parts of sodium hexametaphosphate, 22 parts of isopropanolamine, 18 parts of polycarboxylate dispersant, 7 parts of 1, 2-propylene glycol and 2 parts of polyvinylpyrrolidone.
A preparation method of a titanium dioxide high-efficiency dispersing agent comprises the following steps: adding a certain amount of water into a reaction kettle, adding sodium hexametaphosphate, isopropanolamine and 1, 2-propylene glycol according to parts by weight, stirring at 600rpm of 400-.
The preparation method of the polycarboxylate dispersant comprises the following steps: (1) respectively adding 28 parts of dimethyldiallylammonium chloride, 12 parts of maleic anhydride and 36 parts of water into a reaction kettle, and heating to 55 ℃ for dissolution; (2) dissolving 16 parts of sodium allylsulfonate in 35 parts of water, dissolving 0.35 part of initiator ammonium persulfate in 13 parts of water, heating the reaction kettle to 65 ℃, respectively dropwise adding the sodium allylsulfonate solution and the initiator solution into the reaction kettle for 2 hours, preserving the heat for 4.5 hours, adding a neutralizer to neutralize the pH of the solution to 6-7 after the reaction is finished, and thus obtaining the polycarboxylate dispersant.
Example 2
The titanium dioxide efficient dispersant is characterized by comprising the following components in parts by weight: 64 parts of sodium hexametaphosphate, 33 parts of isopropanolamine, 14 parts of polycarboxylate dispersant, 7 parts of 1, 2-propylene glycol and 5 parts of polyvinylpyrrolidone.
A preparation method of a titanium dioxide high-efficiency dispersing agent comprises the following steps: adding a certain amount of water into a reaction kettle, adding sodium hexametaphosphate, isopropanolamine and 1, 2-propylene glycol according to parts by weight, stirring at 600rpm of 400-.
The preparation method of the polycarboxylate dispersant comprises the following steps: (1) respectively adding 25-35 parts of dimethyldiallylammonium chloride, 12-16 parts of maleic anhydride and 35-50 parts of water into a reaction kettle, and heating to 45-60 ℃ for dissolution; (2) dissolving 28-14 parts of sodium allylsulfonate in 26-38 parts of water, dissolving 0.2-0.4 part of initiator ammonium persulfate in 10-15 parts of water, heating the reaction kettle to 60-75 ℃, respectively dropwise adding the sodium allylsulfonate solution and the initiator solution into the reaction kettle for 2-2.5h, preserving heat for 3-5h, adding a neutralizer after the reaction is finished, and neutralizing the pH value of the solution to 6-7 to obtain the polycarboxylate dispersant.
Example 3
The titanium dioxide efficient dispersant is characterized by comprising the following components in parts by weight: 72 parts of sodium hexametaphosphate, 18 parts of isopropanolamine, 17 parts of polycarboxylate dispersant, 6 parts of 1, 2-propylene glycol and 4 parts of polyvinylpyrrolidone.
A preparation method of a titanium dioxide high-efficiency dispersing agent comprises the following steps: adding a certain amount of water into a reaction kettle, adding sodium hexametaphosphate, isopropanolamine and 1, 2-propylene glycol according to parts by weight, stirring at 600rpm of 400-.
The preparation method of the polycarboxylate dispersant comprises the following steps: (1) adding 33 parts of dimethyldiallylammonium chloride, 15 parts of maleic anhydride and 42 parts of water into a reaction kettle respectively, and heating to 50 ℃ for dissolving; (2) dissolving 20 parts of sodium allylsulfonate in 30 parts of water, dissolving 0.4 part of initiator sodium persulfate in 15 parts of water, heating the reaction kettle to 60 ℃, respectively dropwise adding the sodium allylsulfonate solution and the initiator solution into the reaction kettle for 2 hours, preserving the temperature for 5 hours, adding a neutralizer after the reaction is finished, and neutralizing the pH value of the solution to 6-7 to obtain the polycarboxylate dispersant.
Example 4
The titanium dioxide efficient dispersant is characterized by comprising the following components in parts by weight: 73 parts of sodium hexametaphosphate, 33 parts of isopropanolamine, 19 parts of polycarboxylate dispersant, 7 parts of 1, 2-propylene glycol and 5 parts of polyvinylpyrrolidone.
A preparation method of a titanium dioxide high-efficiency dispersing agent comprises the following steps: adding a certain amount of water into a reaction kettle, adding sodium hexametaphosphate, isopropanolamine and 1, 2-propylene glycol according to parts by weight, stirring at 600rpm of 400-.
The preparation method of the polycarboxylate dispersant comprises the following steps: (1) respectively adding 29 parts of dimethyldiallylammonium chloride, 13 parts of maleic anhydride and 44 parts of water into a reaction kettle, and heating to 60 ℃ for dissolution; (2) dissolving 15 parts of sodium allylsulfonate in 26 parts of water, dissolving 0.2 part of initiator ammonium persulfate-sodium bisulfite in 10-15 parts of water, heating the reaction kettle to 75 ℃, respectively dropwise adding the sodium allylsulfonate solution and the initiator solution into the reaction kettle for 2 hours, preserving the temperature for 3.5 hours, adding a neutralizer after the reaction is finished, and neutralizing the pH value of the solution to 6-7 to obtain the polycarboxylate dispersant.
Example 5
The titanium dioxide efficient dispersant is characterized by comprising the following components in parts by weight: 75 parts of sodium hexametaphosphate, 35 parts of isopropanolamine, 19 parts of polycarboxylate dispersant, 6 parts of 1, 2-propylene glycol and 4 parts of polyvinylpyrrolidone.
A preparation method of a titanium dioxide high-efficiency dispersing agent comprises the following steps: adding a certain amount of water into a reaction kettle, adding sodium hexametaphosphate, isopropanolamine and 1, 2-propylene glycol according to parts by weight, stirring at 600rpm of 400-.
The preparation method of the polycarboxylate dispersant comprises the following steps: (1) respectively adding 32 parts of dimethyldiallylammonium chloride, 15 parts of maleic anhydride and 45 parts of water into a reaction kettle, and heating to 55 ℃ for dissolution; (2) dissolving 24 parts of sodium allylsulfonate in 32 parts of water, dissolving 0.4 part of initiator ammonium persulfate-sodium bisulfite in 13 parts of water, heating the reaction kettle to 70 ℃, respectively dropwise adding the sodium allylsulfonate solution and the initiator solution into the reaction kettle for 2.0 hours, preserving the temperature for 4 hours, adding a neutralizer after the reaction is finished, and neutralizing the pH value of the solution to 6-7 to obtain the polycarboxylate dispersant.
Example 6
Taking calcined and crushed powder, adding deionized water to prepare slurry, taking the titanium dioxide high-efficiency dispersing agent prepared in the examples 1-5, respectively adding 0.2% of the dispersing agent, and uniformly dispersing the titanium dioxide high-efficiency dispersing agent in a pulping tank at 60rpm, wherein the table 1 shows the slurry concentration, the slurry viscosity and the slurry particle size of the titanium dioxide slurry prepared in the examples 1-5;
| concentration of the slurry | Viscosity of the slurry (mPa.s) | Particle size of the slurry (μm) | |
| Example 1 | 1550 | 480 | 0.18 |
| Example 2 | 1400 | 500 | 0.19 |
| Example 3 | 1450 | 550 | 0.20 |
| Example 4 | 1500 | 520 | 0.19 |
| Example 5 | 1600 | 450 | 0.17 |
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The titanium dioxide efficient dispersant is characterized by comprising the following components in parts by weight: 45-85 parts of sodium hexametaphosphate, 15-35 parts of isopropanolamine, 13-20 parts of polycarboxylate dispersant, 5-8 parts of 1, 2-propylene glycol and 2-6 parts of polyvinylpyrrolidone.
2. The titanium dioxide high-efficiency dispersant according to claim 1, characterized in that the preparation method of the polycarboxylate dispersant is as follows: (1) respectively adding 25-35 parts of dimethyldiallylammonium chloride, 12-16 parts of maleic anhydride and 35-50 parts of water into a reaction kettle, and heating to 45-60 ℃ for dissolution; (2) dissolving 14-28 parts of sodium allylsulfonate in 26-38 parts of water, dissolving 0.2-0.4 part of initiator in 10-15 parts of water, heating the reaction kettle to 60-75 ℃, respectively dropwise adding the sodium allylsulfonate solution and the initiator solution into the reaction kettle for 2-2.5h, preserving heat for 3-5h, adding a neutralizer after the reaction is finished, and neutralizing the pH value of the solution to 6-7 to obtain the polycarboxylate dispersant.
3. The titanium dioxide efficient dispersant of claim 1, which is characterized by comprising the following components in parts by weight: 55 parts of sodium hexametaphosphate, 22 parts of isopropanolamine, 18 parts of polycarboxylate dispersant, 7 parts of 1, 2-propylene glycol and 2 parts of polyvinylpyrrolidone.
4. The titanium dioxide efficient dispersant of claim 2, wherein said initiator is ammonium persulfate, sodium persulfate or ammonium persulfate-sodium bisulfite.
5. The titanium dioxide efficient dispersant of claim 2, wherein the neutralizing agent is a sodium hydroxide aqueous solution with a mass concentration of 20-35%.
6. The preparation method of the titanium dioxide high-efficiency dispersing agent as claimed in claim 1 or 2, which is characterized by comprising the following steps: adding a certain amount of water into a reaction kettle, adding sodium hexametaphosphate, isopropanolamine and 1, 2-propylene glycol according to parts by weight, stirring at 600rpm of 400-.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013345A (en) * | 2012-12-21 | 2013-04-03 | 清华大学 | Oily diamond grinding liquid and preparation method thereof |
| CN104190313A (en) * | 2014-06-06 | 2014-12-10 | 济南裕兴化工有限责任公司 | A cost-reducing wetting dispersant used for titanium dioxide |
| CN106634896A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Highly dispersed zwitterionic dispersant for cementing pad fluid, and preparation method thereof |
| CN106947296A (en) * | 2017-04-26 | 2017-07-14 | 攀钢集团研究院有限公司 | High-weatherability titanium dioxide and preparation method thereof |
-
2020
- 2020-09-04 CN CN202010921201.0A patent/CN112063220A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013345A (en) * | 2012-12-21 | 2013-04-03 | 清华大学 | Oily diamond grinding liquid and preparation method thereof |
| CN104190313A (en) * | 2014-06-06 | 2014-12-10 | 济南裕兴化工有限责任公司 | A cost-reducing wetting dispersant used for titanium dioxide |
| CN106634896A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Highly dispersed zwitterionic dispersant for cementing pad fluid, and preparation method thereof |
| CN106947296A (en) * | 2017-04-26 | 2017-07-14 | 攀钢集团研究院有限公司 | High-weatherability titanium dioxide and preparation method thereof |
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Application publication date: 20201211 |