CN102775546A - Branched polyacrylic acid dispersant, and preparation method and application thereof - Google Patents
Branched polyacrylic acid dispersant, and preparation method and application thereof Download PDFInfo
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- CN102775546A CN102775546A CN2011101197028A CN201110119702A CN102775546A CN 102775546 A CN102775546 A CN 102775546A CN 2011101197028 A CN2011101197028 A CN 2011101197028A CN 201110119702 A CN201110119702 A CN 201110119702A CN 102775546 A CN102775546 A CN 102775546A
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Abstract
The invention discloses a branched polyacrylic acid dispersant, and a preparation method and application thereof. According to the invention, polyene monomers are introduced into molecular chains of a linear sodium polyacrylate dispersant so as to obtain a branched dispersant structure which allows the branched polyacrylic acid dispersant to better clad cross sections newly occurred after grinding, and therefore, grinding and dispersing efficiency is improved; furthermore, methacrylic acid, maleic anhydride, fumaric acid, itaconic acid, sodium methylacrylsulfonate, 2-acrylamide-2-methylpropanesulfonic acid (AMPS) and the like are introduced and can provide monomers with stronger negative charges, improve electrostatic repulsion action of double electric layers, mitigate agglomeration among calcium carbonate particles and reduce the viscosity of ground slurry. The dispersant provided by the invention enables high efficiency in grinding of calcium carbonate to be obtained and the slurry to have the characteristics of low viscosity, good dispersibility and stability.
Description
Technical field
The present invention relates to a kind of synthetic macromolecule calcium carbonate wet grinding dispersing agent, especially a kind of branched p 0 lypropylene acids dispersion agent that is used to be coated with the lime carbonate grinding.
Technical background
Water-ground limestone (GCC) is a kind of non-metallic minerals powder of widespread use, and whiteness is high, opacifying power is good, flowability is good, is the main source of paper grade (stock) coating.Paper grade (stock) coating requires high dense low glutinous, makes water-ground limestone be dispersed into high density and becomes extremely important.The water-ground limestone that is used for papermaking paint is a kind of subparticle that behind wet-milling lime carbonate, obtains, and particulate fineness rank is different different because of purposes, can be thick slightly like the primary coat GCC of coating, and face is coated with GCC must be tiny, and fineness reaches (＜2 μ m) more than 95%.Grain breakage process surface molecular is in nonequilibrium state, and its inside or surface molecular all have magnetism to a certain degree.Further during refinement, have active surface area and can become very big, this moment, the fine particle surface tension was just extended the material of catching around it, and more serious along with the granularity super-refinement.From thermodynamic (al) angle, because superfine powder has huge specific surface area, its surface energy is quite big, causes system to be in the unsettled thermodynamic state of antipode.And in the solid miniaturization process; Internal bond strength, the lattice of small-particle constantly are destroyed, and particle surface forms many unsaturated link(age)s, and the total energy of particulate surfactivity and system is constantly increased; Make the surface properties of ultrafine powder become more active, must absorption material on every side.Therefore to reach and grind rank preferably, must in medium, add dispersion agent with stable particle.
Summary of the invention
In order to solve the dissatisfactory problem of the stabilization of dispersion agent in the prior art; One of the object of the invention is to provide a kind of branched p 0 lypropylene acids dispersion agent that lime carbonate grinds that is used to be coated with; Its unique molecular chain structure can better coat it to grinding the new cross section that produces, and makes to grind and disperses and can carry out efficiently smoothly, the electrostatic double layer Coulomb repulsion effect of dispersion agent of the present invention simultaneously; Can reduce the agglomeration between calcium carbonate granule, reduce the viscosity of slurry.
In order to achieve the above object, the present invention adopts following technical scheme:
Novel branched polyacrylic dispersion agent of the present invention; Be to be processed by the raw material of following mass fraction: Acrylic Acid Monomer is 18～20 parts; The comonomer total amount is 5～7 parts, and polyenoid class monomer is 3～5 parts, alkaline matter 16-18 part; The oxygenant reductive agent summation of initiator system is 2～3 parts, and water is 47-56 part.
Another object of the present invention provides a kind of method for preparing said branched p 0 lypropylene acids dispersion agent, and the technical scheme that is adopted is:
With vinylformic acid is the principal reaction monomer; One or more monomers among adding methylacrylic acid, maleic anhydride, fumaric acid, methylene-succinic acid, methylpropene sodium sulfonate, the AMPS (2-acrylic amide-2-methyl propane sulfonic acid) are as comonomer; Add polyenoid class monomer in addition; With the redox system is initiator system, forms through aqueous solution polymerization, neutralizes with alkaline matter at last.
Concrete, undertaken by following operation steps:
(1) reductive agent of a certain amount of water and initiator system is added in the reactor drum as bed material stirring and dissolving;
(2) with Acrylic Acid Monomer, comonomer, polyenoid class monomer, a certain amount of water wiring solution-forming, and with the alkaline matter neutralization, the residue reductive agent that adds initiator system again is made into dropping liquid A;
(3) oxygenant of initiator system, a certain amount of water are made into dropping liquid B;
(4) mode of solution A, B being taked to drip joins in the described reactor drum of step (1), carries out polyreaction then, after reaction finishes, and cooling, with the alkaline matter neutralization, blowing gets final product at last.
Wherein, the polyenoid class monomer of said adding is a kind of in pentaerythritol triacrylate, polyethyleneglycol diacrylate, polyethylene glycol dimethacrylate, Vinylstyrene, the Viscoat 335HP or their combination.
Wherein, said initiator system is one or both the compound uses in Sodium Persulfate-inferior sodium phosphate system, ammonium persulfate-sodium bisulfite, the hydrogen peroxide-ferrous sulfate system; The oxygenant in the said initiator system and the part by weight of reductive agent are 1: 2-1.25: 2.
Wherein, raw materials used mass fraction is: Acrylic Acid Monomer is 18～20 parts, and the comonomer total amount is 5～7 parts, and polyenoid class monomer is 3～5 parts, alkaline matter 16-18 part, and the oxygenant reductive agent summation of initiator system is 2～3 parts, water is 47-56 part.
Wherein, said alkaline matter is a sheet alkali, and the alkaline solution that is made into 40-45% uses; Use wherein and be 4-5 with the pH value of solution value.
Wherein, the temperature of described polyreaction is 80-87 ℃; The time of said dropping is 5-5.5h; Said polymerization reaction time is 1-1.5h.
Can prepare the branched p 0 lypropylene acids dispersion agent that lime carbonate grinds that is used to be coated with of the presently claimed invention with aforesaid method.
Prepared dispersion agent can be used its dispersion agent as wet-milling lime carbonate.
Preparation technology of the present invention, it is owing to adopt the dropping synthesis technique, and the reaction process heat release is few, reacting balance, temperature of reaction is low, and technological process is simple, and the cooling blowing got final product after reaction reached requirement, can well realize in the industry.
The practical implementation method
Below in conjunction with specific embodiment and Comparative Examples the inventive method and advantage are made further comparative descriptions.
The preparation of novel branched polyacrylic dispersion agent is carried out according to the following steps:
(1) reductive agent of a certain amount of water and initiator system is added in the reactor drum as bed material stirring and dissolving;
(2) with Acrylic Acid Monomer, comonomer, polyenoid class monomer, a certain amount of water wiring solution-forming, and to use alkaline matter to be neutralized to pH be about 4, and the residue reductive agent that adds initiator system again is made into dropping liquid A;
(3) oxygenant of initiator system, a certain amount of water are made into dropping liquid B;
(4) mode of solution A, B being taked to drip at a certain temperature joins in the described reactor drum of step (1) within a certain period of time, reacts for some time stopped reaction again, is cooled to below 50 ℃, and using alkaline matter to be neutralized to pH is about 5, and blowing gets final product.
Wherein, the time of dropping is 5-5.5h; The temperature of polyreaction is 80-87 ℃; Polymerization reaction time is 1-1.5h.
The consumption of embodiment medicine and product that obtains such as following table:
The preparation of calcium carbonate slurry:
Dispersion agent and the example grinding dispersion under same technology as a comparison of commercially available ZX-I dispersion agent with embodiment of the invention 1-5.
Grind dispersing technology:
In the steel basin of 100kg, add the kg premium on currency, open stirring, add dispersion agent 260g, stir, add 325 order lime carbonate 75kg and carry out pre-dispersedly, after being uniformly dispersed, with being pumped in two placed in-line shredders, grinding medium is the zirconium pearl.Add the 240g dispersion agent after grinding 1h.Both continue to grind behind the 6h heavy calcium carbonate slurry, solid content is 75% slurry.
Adopt the ISO2884-2-2003 standard code, use NDJ-1 type rotational viscosimeter to record slurry viscosity and be 231cps.Particle diameter is tested by the particle diameter appearance.Each sample data is seen table:
Can find out under the same grinding condition that from last table use the dispersion agent of embodiment of the invention 1-5, slurry viscosity is low, particle diameter is little, good dispersivity and more stable.
The above is merely preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and in spirit that claim of the present invention limited and scope, can carry out many changes to it, revise, in addition equivalent, but all will fall in protection scope of the present invention.
Claims (10)
1. the preparation method of a branched p 0 lypropylene acids dispersion agent; Be to be the principal reaction monomer with vinylformic acid; One or more monomers among adding methylacrylic acid, maleic anhydride, fumaric acid, methylene-succinic acid, methylpropene sodium sulfonate, the AMPS add polyenoid class monomer in addition as comonomer, are initiator system with the redox system; Form through aqueous solution polymerization, neutralize with alkaline matter.
2. preparation method according to claim 1, specifically undertaken by following operation steps:
(1) reductive agent of a certain amount of water and initiator system is added in the reactor drum as bed material stirring and dissolving;
(2) with Acrylic Acid Monomer, comonomer, polyenoid class monomer, a certain amount of water wiring solution-forming, and with the alkaline matter neutralization, the residue reductive agent that adds initiator system again is made into dropping liquid A;
(3) oxygenant of initiator system, a certain amount of water are made into dropping liquid B;
(4) mode of solution A, B being taked to drip joins in the described reactor drum of step (1), carries out polyreaction then, after reaction finishes, and cooling, with the alkaline matter neutralization, blowing gets final product at last.
3. preparation method according to claim 2, the polyenoid class monomer that it is characterized in that said adding is a kind of in pentaerythritol triacrylate, polyethyleneglycol diacrylate, polyethylene glycol dimethacrylate, Vinylstyrene, the Viscoat 335HP or their combination.
4. preparation method according to claim 2 is characterized in that said initiator system is one or both the compound uses in Sodium Persulfate-inferior sodium phosphate system, ammonium persulfate-sodium bisulfite, the hydrogen peroxide-ferrous sulfate system; The oxygenant in the said initiator system and the part by weight of reductive agent are 1: 2-1.25: 2.
5. preparation method according to claim 2; The mass fraction that it is characterized in that used each raw material is: Acrylic Acid Monomer is 18～20 parts; The comonomer total amount is 5～7 parts, and polyenoid class monomer is 3～5 parts, alkaline matter 16-18 part; The oxygenant reductive agent summation of initiator system is 2～3 parts, and water is 47-56 part.
6. preparation method according to claim 2 is characterized in that said alkaline matter is a sheet alkali, and the alkaline solution that is made into 40-45% uses.
7. preparation method according to claim 2 is characterized in that using alkaline matter neutralization solution pH value to be 4-5.
8. preparation method according to claim 2, the temperature that it is characterized in that described polyreaction is 80-87 ℃; The time of said dropping is 5-5.5h; The said reaction times is 1-1.5h.
9. the dispersion agent for preparing according to each said method of claim 1-8.
10. the application of dispersion agent according to claim 9 is with its dispersion agent as wet-milling lime carbonate.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030729A (en) * | 2012-12-06 | 2013-04-10 | 永港伟方（北京）科技股份有限公司 | Dispersant for grinding heavy calcium carbonate as well as synthetic method and application thereof |
| CN103275264A (en) * | 2013-05-08 | 2013-09-04 | 中科院广州化学有限公司 | Water reducing agent capable of reducing viscosity of slurry as well as preparation method and application thereof |
| CN103894108A (en) * | 2012-12-28 | 2014-07-02 | 南通市晗泰化工有限公司 | Block-type water-based polymer dispersant |
| CN104017119A (en) * | 2014-06-12 | 2014-09-03 | 东升新材料（山东）有限公司 | Dispersing agent for grinding triple superphosphate with branched structure and preparation method thereof |
| CN105837729A (en) * | 2016-02-26 | 2016-08-10 | 宁波市嘉化新材料科技有限公司 | Dispersing agent |
| CN105859941A (en) * | 2016-02-26 | 2016-08-17 | 宁波市嘉化新材料科技有限公司 | Dispersion type rheological agent |
| CN107540778A (en) * | 2017-08-31 | 2018-01-05 | 湖北工业大学 | The preparation method of wet-milling low-molecular-weight, anionic type polymeric dispersant |
| CN112645625A (en) * | 2019-10-12 | 2021-04-13 | 中国石油化工股份有限公司 | Composite oil well cement polycarboxylic acid dispersant, and preparation method and application thereof |
| CN112724308A (en) * | 2020-12-31 | 2021-04-30 | 九洲生物技术（苏州）有限公司 | Dispersant, grinding dispersant and coating for papermaking coating |
| CN115785324A (en) * | 2023-02-09 | 2023-03-14 | 广东壮丽彩印股份有限公司 | Preparation method of dispersing agent for nano calcium carbonate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286275A (en) * | 1999-08-31 | 2001-03-07 | 中国石油化工集团公司 | Process for preparing graft copolymerization type non-ash disperser |
| WO2010149955A1 (en) * | 2009-06-22 | 2010-12-29 | Unilever Plc | Branched polymer dispersants |
-
2011
- 2011-05-10 CN CN201110119702.8A patent/CN102775546B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286275A (en) * | 1999-08-31 | 2001-03-07 | 中国石油化工集团公司 | Process for preparing graft copolymerization type non-ash disperser |
| WO2010149955A1 (en) * | 2009-06-22 | 2010-12-29 | Unilever Plc | Branched polymer dispersants |
Non-Patent Citations (4)
| Title |
|---|
| 《河北化工》 20041231 王春晓等 "丙烯酸类聚合物分散剂的制备" 5-9 1-10 , 第3期 * |
| 《高分子材料科学与工程》 20090331 李付萱等 "甲基丙烯酸/衣康酸/烯丙基磺酸盐超分子分散剂的合成与性能表征" 107-110 1-4，6-10 第25卷, 第3期 * |
| 李付萱等: ""甲基丙烯酸/衣康酸/烯丙基磺酸盐超分子分散剂的合成与性能表征"", 《高分子材料科学与工程》, vol. 25, no. 3, 31 March 2009 (2009-03-31), pages 107 - 110 * |
| 王春晓等: ""丙烯酸类聚合物分散剂的制备"", 《河北化工》, no. 3, 31 December 2004 (2004-12-31), pages 5 - 9 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030729A (en) * | 2012-12-06 | 2013-04-10 | 永港伟方（北京）科技股份有限公司 | Dispersant for grinding heavy calcium carbonate as well as synthetic method and application thereof |
| CN103030729B (en) * | 2012-12-06 | 2015-04-29 | 永港伟方（北京）科技股份有限公司 | Dispersant for grinding heavy calcium carbonate as well as synthetic method and application thereof |
| CN103894108A (en) * | 2012-12-28 | 2014-07-02 | 南通市晗泰化工有限公司 | Block-type water-based polymer dispersant |
| CN103894108B (en) * | 2012-12-28 | 2016-04-13 | 南通市晗泰化工有限公司 | Block type aqueous high molecular dispersant |
| CN103275264A (en) * | 2013-05-08 | 2013-09-04 | 中科院广州化学有限公司 | Water reducing agent capable of reducing viscosity of slurry as well as preparation method and application thereof |
| CN104017119A (en) * | 2014-06-12 | 2014-09-03 | 东升新材料（山东）有限公司 | Dispersing agent for grinding triple superphosphate with branched structure and preparation method thereof |
| CN105837729A (en) * | 2016-02-26 | 2016-08-10 | 宁波市嘉化新材料科技有限公司 | Dispersing agent |
| CN105859941A (en) * | 2016-02-26 | 2016-08-17 | 宁波市嘉化新材料科技有限公司 | Dispersion type rheological agent |
| CN107540778A (en) * | 2017-08-31 | 2018-01-05 | 湖北工业大学 | The preparation method of wet-milling low-molecular-weight, anionic type polymeric dispersant |
| CN107540778B (en) * | 2017-08-31 | 2020-12-01 | 湖北工业大学 | Preparation method of low-molecular-weight anionic polymer dispersant for wet grinding |
| CN112645625A (en) * | 2019-10-12 | 2021-04-13 | 中国石油化工股份有限公司 | Composite oil well cement polycarboxylic acid dispersant, and preparation method and application thereof |
| CN112645625B (en) * | 2019-10-12 | 2022-07-05 | 中国石油化工股份有限公司 | Composite oil well cement polycarboxylic acid dispersant, and preparation method and application thereof |
| CN112724308A (en) * | 2020-12-31 | 2021-04-30 | 九洲生物技术（苏州）有限公司 | Dispersant, grinding dispersant and coating for papermaking coating |
| CN112724308B (en) * | 2020-12-31 | 2023-03-10 | 九洲生物技术（苏州）有限公司 | Dispersant, grinding dispersant and coating for papermaking coating |
| CN115785324A (en) * | 2023-02-09 | 2023-03-14 | 广东壮丽彩印股份有限公司 | Preparation method of dispersing agent for nano calcium carbonate |
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