CN104387529A - Cationic polyacrylamide emulsion and synthesis method thereof - Google Patents

Cationic polyacrylamide emulsion and synthesis method thereof Download PDF

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Publication number
CN104387529A
CN104387529A CN201410662829.8A CN201410662829A CN104387529A CN 104387529 A CN104387529 A CN 104387529A CN 201410662829 A CN201410662829 A CN 201410662829A CN 104387529 A CN104387529 A CN 104387529A
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monomer
polyacrylamide emulsion
initiator
stablizer
cation polyacrylamide
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任朝华
王昌军
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Yangtze University
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Yangtze University
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Abstract

The invention relates to a cationic polyacrylamide emulsion and a synthesis method thereof. The cationic polyacrylamide emulsion is characterized by comprising the following components in percentage by mass: 8-25 wt% of sum of nonionic monomer and cationic monomer, 10-35 wt% of inorganic salt, 0.5-5 wt% of stabilizer, initiator accounting for 0.001-0.08 wt% of the monomers, polymerization inhibitor accounting for 0.001-0.01 wt% of the monomers, and the balance of water. The synthesis method comprises the following steps: adding the nonionic monomer, cationic monomer, inorganic salt and stabilizer into a container, uniformly dissolving in water, and regulating the temperature of the solution to 25-60 DEG C; and introducing nitrogen, adding the initiator after 30 minutes, stirring for 2-24 hours in a closed state, adding the polymerization inhibitor, continuing stirring for 30 minutes, cooling to room temperature, and discharging to obtain the cationic polyacrylamide emulsion product. The synthesis method is suitable for synthesizing various cationic polyacrylamide emulsions with high yield and favorable flowability, and is simple, green and environment-friendly; and the cationic polyacrylamide emulsion has the characteristics of high stability, high water solubility and low cost.

Description

A kind of cation polyacrylamide emulsion and synthetic method thereof
Technical field:
The present invention relates to a kind of cation polyacrylamide emulsion and synthetic method thereof, belong to water-soluble high-molecular material synthesis technical field.
Background technology:
Polyacrylamide water-soluble high-molecular material, owing to having the performances such as good water-soluble, tackifying, is widely used in multiple industrial circle.Wherein, cationic polyacrylamide has the material charge adsorption effect with anionic charge due to the cationic groups that its molecule contains, and is more suitable for the toughener etc. being used as the coating agent in drilling fluid, the flocculation agent in sewage disposal, sludge dehydrating agent, paper.
In the synthetic method of cationic polyacrylamide, aqueous solution polymerization method is widely used, but the product needed of this method synthesis obtains powder product after the operation such as granulation, drying, and energy consumption is large, and during powder product use, dissolution rate is slow, needs to stir for a long time.Inverse emulsion polymerization and conversed phase micro emulsion copolymerization method are the newer synthetic methods adopted, and these methods not only can synthesize the product of high molecular, and can solve the slower problem of product dissolution rate.But, inverse emulsion polymerization and conversed phase micro emulsion copolymerization method are when preparing polyacrylamide amine product, need a large amount of organic solvents and tensio-active agent, this not only adds synthesis cost, and in use can cause secondary pollution and the performance affecting product performance.
Summary of the invention:
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of cation polyacrylamide emulsion and synthetic method thereof, be suitable for synthesizing that various productive rate is high, the cation polyacrylamide emulsion of good fluidity, have that synthetic method is simple, good stability, water-soluble strong, environmental protection and the low feature of cost.
The present invention realizes above-mentioned purpose by following technical solution.
A kind of cation polyacrylamide emulsion provided by the present invention, wherein the mass percent of each component is:
Non-ionic monomer and cation mono weight sum account for 8-25wt%, and wherein, cationic monomer accounts for the 3-45wt% of monomer total mass;
Inorganic salt account for 10-35wt%;
Stablizer accounts for 0.5-5wt%;
Initiator accounts for the 0.001-0.08wt% of monomer total mass;
Stopper accounts for the 0.001-0.01wt% of monomer total mass;
Surplus is water;
The synthetic method of a kind of cation polyacrylamide emulsion provided by the present invention, comprises the steps:
(1), by non-ionic monomer, cationic monomer, inorganic salt and stablizer join in proportion in container, after even by water dissolution, regulate its solution temperature to 25 ~ 60 DEG C; Logical nitrogen protection is carried out to solution, after 30 minutes, adds initiator in proportion, continue to stir, carry out polyreaction;
(2) maintain the temperature at 25 ~ 60 DEG C after adding initiator, in the solution, close stirring and add stopper in proportion after 2 ~ 24 hours, continue stirring after 30 minutes, be cooled to room temperature, discharging, obtain cation polyacrylamide emulsion product.
Described non-ionic monomer is the one in acrylamide, Methacrylamide, N methacrylamide, N,N-DMAA, vinylbenzene, methyl acrylate, methyl methacrylate, butyl acrylate, butyl methacrylate and NVP;
Described cationic monomer is the one in acrylyl oxy-ethyl-trimethyl salmiac, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acryloxypropyl trimethyl ammonium chloride, methacryloxypropyl trimethyl ammonium chloride and N, N-dimethyl diallyl ammonium chloride;
Described inorganic salt are the one that the positively charged ion of potassium, sodium, lithium and ammonium and the negatively charged ion of sulfate radical, inferior sulfate radical, halogen ion, phosphate radical and nitrate radical form in salt;
Described stopper is the one in Resorcinol, para benzoquinone, toluhydroquinone, MEHQ, Sodium dimethyldithiocarbamate 40min, p-ten.-butylcatechol, 2-Tert. Butyl Hydroquinone and 2,5 di tert butyl hydroquinone;
Described initiator is the one in oxidation system, oxidation-reduction trigger system and azo-bis-isobutyrate hydrochloride;
Wherein: oxidation system is the one in Potassium Persulphate and ammonium persulphate;
Oxidation-reduction trigger system is made up of with sodium bisulfite or ammonium bisulfite Potassium Persulphate or ammonium persulphate;
Described stablizer has following chemical structural formula (I):
Wherein: R 1, R 3and R 5be respectively H, CH 3and CH 2cH 3in one, R 1, R 3and R 5can be the same or different;
R 2for NH 2, NHCH 3with N (CH 3) 2in one;
R 4for 2-Pyrrolidone base;
R 6for NH or NCH 3;
O, p and m be respectively 1 or be greater than 1 integer, x be greater than 1 integer, the product of x and (o+p+m) is between 4000-11000;
The described synthetic method with the stablizer of chemical structural formula (I), comprises the steps:
(1) monomer mixture (is made up of the one in acrylamide, Methacrylamide and N methacrylamide and NVP, wherein, NVP accounts for the 3-10wt% of monomer total mass) be dissolved in the water, be mixed with the aqueous solution that concentration is 4-8wt%, regulate its aqueous temperature to 25 ~ 60 DEG C, when logical nitrogen protection, add the initiator ammonium persulfate of monomer mixture quality 0.1-0.12wt%, react and can obtain the aqueous solutions of polymers that the polymerization degree is 4000-11000 after 2-3 hour;
(2) at 40-70 DEG C, paraformaldehyde and S-WAT is added again in aqueous solutions of polymers, both quality and be the 10-20wt% of monomer mixture, wherein: the mol ratio of paraformaldehyde and S-WAT is 1:1.5-1:4, react after 2-10 hour, obtain the stablizer aqueous solution of structural formula (I).
The present invention has following beneficial effect compared with prior art:
(1) reaction solution preparation is easy, and temperature of reaction is low, the selectivity of temperature of reaction and workable, at room temperature, is added water by all materials and stirs, can realize " one kettle way " reinforced.
(2) environmental protection, synthesis cost is low, adopts water as solvent, avoids the environmental pollution adopting organic solvent or tensio-active agent to cause.
(3) good emulsion stability, good fluidity, the stablizer of employing can make emulsion intercalation method reach more than 100 days, is convenient to store and transport, easy to use.
(4) by force water-soluble, effective content is high, and in emulsion, monomer content can reach 25wt%, to realize in water slightly stirring and solubilized.
(5) universality, the product emulsion of synthesis can be used as the toughener etc. of the coating agent in drilling fluid, the flocculation agent in sewage disposal, sludge dehydrating agent, paper.
Embodiment:
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1:
This example is used for the synthesis of the stablizer aqueous solution of structural formula (I).
Monomer mixture (acrylamide 95wt% and NVP 5wt%) is mixed with the aqueous solution that concentration is 5wt%, be warming up to 60 DEG C, when logical nitrogen protection, add the ammonium persulphate of acrylamide quality 0.1wt%, react the aqueous solution that can obtain polyacrylamide after 2 hours;
The temperature of polyacrylamide solution is controlled at 50 DEG C, add paraformaldehyde and the sodium bisulfite (both mol ratios are 1:1.06) of monomer mixture quality 10wt%, react after 5 hours, namely obtain the stablizer aqueous solution of structural formula I.
Embodiment 2:
Under room temperature, with temperature regulating device, whipping appts, nitrogen passes into mouth, in the round-bottomed flask of reflux condensing tube, add 70g water respectively, 36g acrylamide, 34g ammonium sulfate, 20g ammonium chloride, 5g acrylyl oxy-ethyl-trimethyl salmiac, 4g N, the stablizer aqueous solution of preparation in the N-dimethyl diallyl ammonium chloride aqueous solution (concentration 65wt%) and 40g embodiment 1, after stirring, logical nitrogen, be warming up to 35 DEG C, continue stirring after 30 minutes, add the ammonium persulphate of 1wt% and the aqueous solution 2.5mL of sodium bisulfite (mass ratio 1:1), continue stirring after 15 hours, add the Resorcinol aqueous solution 0.4mL of 1wt%, be reduced to room temperature, collect, obtain oyster white, the emulsion of good fluidity, stability is greater than 110 days.
Embodiment 3:
Under room temperature, with temperature regulating device, whipping appts, nitrogen passes into mouth, in the round-bottomed flask of reflux condensing tube, add 50g water respectively, 24g acrylamide, 6g N methacrylamide, 24g ammonium sulfate, 18g ammonium nitrate, 4.5g MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, 3g N, the stablizer aqueous solution of preparation in the N-dimethyl diallyl ammonium chloride aqueous solution (concentration 65wt%) and 35g embodiment 1, after stirring, logical nitrogen, be warming up to 35 DEG C, after 30 minutes, add the ammonium persulphate of 1wt% and the aqueous solution 1.8mL of sodium bisulfite (mass ratio 1:1), continue stirring after 16 hours, add the Resorcinol aqueous solution 0.3mL of 1wt%, be reduced to room temperature, collect, obtain oyster white, the emulsion of good fluidity, stability is greater than 140 days.
Embodiment 4:
Material and dosage thereof are identical with embodiment 3, and temperature of reaction is 50 DEG C, adds the persulfate aqueous solution 1.8mL of 1wt%, react after 10 hours, add the Resorcinol aqueous solution 0.3mL of 1wt%, after being down to room temperature, collect, obtain product emulsion, stability is greater than 125 days.
Embodiment 5:
Material and dosage thereof are identical with embodiment 3, and temperature of reaction is 30 DEG C, add the ammonium persulphate of 1wt% and the azo-bis-isobutyrate hydrochloride aqueous solution 0.5mL of sodium bisulfite (mass ratio 1:1) solution 1mL and 1wt%, react after 18 hours, add the Resorcinol aqueous solution 0.3mL of 1wt%, after being down to room temperature, collect, obtain product emulsion, stability is greater than 135 days.
Embodiment 6:
Under room temperature, with temperature regulating device, whipping appts, nitrogen passes into mouth, in the round-bottomed flask of reflux condensing tube, add 90g water respectively, 18g N, N-DMAA, 24g N methacrylamide, 60g ammonium sulfate, 14g N, the stablizer aqueous solution of preparation in the N-dimethyl diallyl ammonium chloride aqueous solution (concentration 65wt%) and 45g embodiment 1, after stirring, logical nitrogen, be warming up to 40 DEG C, after 30 minutes, add the ammonium persulphate of 1wt% and the aqueous solution 2.2mL of sodium bisulfite (mass ratio 1:1), continue stirring after 16 hours, add the Resorcinol aqueous solution 0.4mL of 1wt%, be down to room temperature, collect, obtain oyster white, the emulsion of good fluidity, stability is greater than 130 days.
Embodiment 7:
Under room temperature, with temperature regulating device, whipping appts, nitrogen passes into mouth, in the round-bottomed flask of reflux condensing tube, add 80g water respectively, 40g N, N-DMAA, 2g NVP, 60g ammonium sulfate, 14g N, the stablizer aqueous solution of preparation in the N-dimethyl diallyl ammonium chloride aqueous solution (concentration 65wt%) and 50g embodiment 1, after stirring, logical nitrogen, be warming up to 40 DEG C, after 30 minutes, add the ammonium persulphate of 1wt% and the aqueous solution 2mL of sodium bisulfite (mass ratio 1:1), after continuing to stir 15h, add the Resorcinol aqueous solution 0.4mL of 1wt%, be down to room temperature, collect, obtain oyster white, the emulsion of good fluidity, stability is greater than 135 days.
Embodiment 8-13:
This embodiment 8-13 measures the emulsion of synthesizing in embodiment 2-7 is water-soluble.
The amount of the emulsion of synthesizing in embodiment 2-7 by 2wt% be added to the water, slightly stirring or stirring are no more than 10min, can disperse, show the well water-soluble of all emulsions in water.
Embodiment 14-19:
This embodiment 14-19 measures the emulsion polymer weight-average molecular weight of synthesizing in embodiment 2-7.
Adopt static light scattering method to measure emulsion polymer weight-average molecular weight in embodiment 2-7 and be all greater than 4,200,000, wherein, the weight-average molecular weight of embodiment 3 and embodiment 5 is greater than 7,500,000 and be greater than 8,300,000 respectively.

Claims (8)

1. a cation polyacrylamide emulsion, is characterized in that the mass percent of wherein each component is:
Non-ionic monomer and cation mono weight sum account for 8-25wt%, and wherein, cationic monomer accounts for the 3-45wt% of monomer total mass;
Inorganic salt account for 10-35wt%;
Stablizer accounts for 0.5-5wt%;
Initiator accounts for the 0.001-0.08wt% of monomer total mass;
Stopper accounts for the 0.001-0.01wt% of monomer total mass;
Surplus is water.
2. the synthetic method of a kind of cation polyacrylamide emulsion as claimed in claim 1, is characterized in that comprising the steps:
(1), by non-ionic monomer, cationic monomer, inorganic salt and stablizer join in proportion in container, after even by water dissolution, regulate its solution temperature to 25 ~ 60 DEG C; Logical nitrogen protection is carried out to solution, after 30 minutes, adds initiator in proportion, continue to stir, carry out polyreaction;
(2) maintain the temperature at 25 ~ 60 DEG C after adding initiator, in the solution, close stirring and add stopper in proportion after 2 ~ 24 hours, continue stirring after 30 minutes, be cooled to room temperature, discharging, obtain cation polyacrylamide emulsion product.
3. a kind of cation polyacrylamide emulsion according to claim 1, it is characterized in that described non-ionic monomer is the one in acrylamide, Methacrylamide, N methacrylamide, N,N-DMAA, vinylbenzene, methyl acrylate, methyl methacrylate, butyl acrylate, butyl methacrylate and NVP.
4. a kind of cation polyacrylamide emulsion according to claim 3, it is characterized in that described cationic monomer is the one in acrylyl oxy-ethyl-trimethyl salmiac, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acryloxypropyl trimethyl ammonium chloride, methacryloxypropyl trimethyl ammonium chloride and N, N-dimethyl diallyl ammonium chloride.
5. a kind of cation polyacrylamide emulsion according to claim 4, is characterized in that described inorganic salt are the one that the positively charged ion of potassium, sodium, lithium and ammonium and the negatively charged ion of sulfate radical, inferior sulfate radical, halogen ion, phosphate radical and nitrate radical form in salt.
6. a kind of cation polyacrylamide emulsion according to claim 5, it is characterized in that described stopper is the one in Resorcinol, para benzoquinone, toluhydroquinone, MEHQ, Sodium dimethyldithiocarbamate 40min, p-ten.-butylcatechol, 2-Tert. Butyl Hydroquinone and 2,5 di tert butyl hydroquinone.
7. a kind of cation polyacrylamide emulsion according to claim 6, is characterized in that described initiator is the one in oxidation system, oxidation-reduction trigger system and azo-bis-isobutyrate hydrochloride;
Wherein: oxidation system is the one in Potassium Persulphate and ammonium persulphate; Oxidation-reduction trigger system is made up of with sodium bisulfite or ammonium bisulfite Potassium Persulphate or ammonium persulphate.
8. a kind of cation polyacrylamide emulsion according to claim 7, is characterized in that described stablizer has following chemical structural formula (I):
Wherein: R 1, R 3and R 5be respectively H, CH 3and CH 2cH 3in one, R 1, R 3and R 5can be the same or different;
R 2for NH 2, NHCH 3with N (CH 3) 2in one;
R 4for 2-Pyrrolidone base;
R 6for NH or NCH 3;
O, p and m be respectively 1 or be greater than 1 integer, x be greater than 1 integer, the product of x and (o+p+m) is between 4000-11000;
The described synthetic method with the stablizer of chemical structural formula (I), comprises the steps:
(1) monomer mixture (is made up of the one in acrylamide, Methacrylamide and N methacrylamide and NVP, wherein, NVP accounts for the 3-10wt% of monomer total mass) be dissolved in the water, be mixed with the aqueous solution that concentration is 4-8wt%, regulate its aqueous temperature to 25 ~ 60 DEG C, when logical nitrogen protection, add the initiator ammonium persulfate of monomer mixture quality 0.1-0.12wt%, react and can obtain the aqueous solutions of polymers that the polymerization degree is 4000-11000 after 2-3 hour;
(2) at 40-70 DEG C, paraformaldehyde and S-WAT is added again in aqueous solutions of polymers, both quality and be the 10-20wt% of monomer mixture, wherein: the mol ratio of paraformaldehyde and S-WAT is 1:1.5-1:4, react after 2-10 hour, obtain the stablizer aqueous solution of structural formula (I).
CN201410662829.8A 2014-11-19 2014-11-19 Cationic polyacrylamide emulsion and synthesis method thereof Pending CN104387529A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104817657A (en) * 2015-05-19 2015-08-05 长江大学 Hydrophobic and oleophobic fluorine-containing group-modified drag reducer for hydraulic fracturing of inverse emulsion
CN108484828A (en) * 2018-04-18 2018-09-04 西南石油大学 A kind of cation emulsion and preparation method thereof of water-in-water type nano-silica-containing core-shell particles
CN108914630A (en) * 2018-05-07 2018-11-30 东莞德永佳纺织制衣有限公司 A kind of salt-free dyeing technique of cotton fabric
CN109575185A (en) * 2018-12-25 2019-04-05 上海纳米技术及应用国家工程研究中心有限公司 The preparation of fluorided-modified hydrophobicity amphoteric organic polymer coargulator and product and application
CN114015300A (en) * 2021-10-25 2022-02-08 华麟海(海南)新材料科技有限公司 Concrete protective coating capable of sterilizing and adsorbing sulfate ions and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101735388A (en) * 2009-12-25 2010-06-16 同济大学 Preparation method of water-in-water cation polyacrylamide
CN102250284A (en) * 2011-05-13 2011-11-23 西北师范大学 Synthetic method of water-in-water type polyacrylamide emulsion
CN103044622A (en) * 2012-10-30 2013-04-17 江苏博特新材料有限公司 Preparation method of water-in-water type cationic polyacrylamide emulsion
CN103848936A (en) * 2013-12-06 2014-06-11 江苏苏博特新材料股份有限公司 Seed polymer for water-in-water cationic polyacrylamide copolymer dispersion liquid and stabilizer of seed polymer as well as preparation method of dispersion liquid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101735388A (en) * 2009-12-25 2010-06-16 同济大学 Preparation method of water-in-water cation polyacrylamide
CN102250284A (en) * 2011-05-13 2011-11-23 西北师范大学 Synthetic method of water-in-water type polyacrylamide emulsion
CN103044622A (en) * 2012-10-30 2013-04-17 江苏博特新材料有限公司 Preparation method of water-in-water type cationic polyacrylamide emulsion
CN103848936A (en) * 2013-12-06 2014-06-11 江苏苏博特新材料股份有限公司 Seed polymer for water-in-water cationic polyacrylamide copolymer dispersion liquid and stabilizer of seed polymer as well as preparation method of dispersion liquid

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Y.M.WU ER AL.: "Aqueous Dispersion Polymerization of Acrylamide with Quaternary Ammonium Cationic Comonomer", 《JOURNAL OF APPLIED POLYMER SCIENCE》 *
徐溢等: "《高分子合成用助剂》", 31 March 2002, 化学工业出版社和精细化工出版中心 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104817657A (en) * 2015-05-19 2015-08-05 长江大学 Hydrophobic and oleophobic fluorine-containing group-modified drag reducer for hydraulic fracturing of inverse emulsion
CN108484828A (en) * 2018-04-18 2018-09-04 西南石油大学 A kind of cation emulsion and preparation method thereof of water-in-water type nano-silica-containing core-shell particles
CN108914630A (en) * 2018-05-07 2018-11-30 东莞德永佳纺织制衣有限公司 A kind of salt-free dyeing technique of cotton fabric
CN109575185A (en) * 2018-12-25 2019-04-05 上海纳米技术及应用国家工程研究中心有限公司 The preparation of fluorided-modified hydrophobicity amphoteric organic polymer coargulator and product and application
CN114015300A (en) * 2021-10-25 2022-02-08 华麟海(海南)新材料科技有限公司 Concrete protective coating capable of sterilizing and adsorbing sulfate ions and preparation method thereof
CN114015300B (en) * 2021-10-25 2023-10-13 华麟海(海南)新材料科技有限公司 Concrete protective coating capable of sterilizing and adsorbing sulfate ions and preparation method thereof

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Application publication date: 20150304