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Hydrophobic association type cationic polyacrylamide, preparation method, and application thereof

A polyacrylamide and hydrophobic association technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problem that the hydrophobic association cannot meet the market demand, etc. Effect

Inactive Publication Date: 2017-03-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its hydrophobic association cannot meet the needs of the market

Method used

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  • Hydrophobic association type cationic polyacrylamide, preparation method, and application thereof
  • Hydrophobic association type cationic polyacrylamide, preparation method, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) In a three-necked flask equipped with a stirrer and a spherical condenser, add trifluoroethyl methacrylate, methacryloyloxyethyl trimethyl chloride at a mass ratio of 1:3:7:25 ammonium, acrylamide and deionized water.

[0035] (2) Fill the reaction device with high-purity nitrogen, remove the air in the reaction device completely after 0.5 h, and then heat and stir.

[0036] (3) At 55°C, use a constant-pressure dropping funnel to add dropwise a mixed solution of ammonium persulfate and sodium bisulfite (mass ratio: 3:2) with a total mass of monomers of 1.5%. Heat to reflux for 4 hours until the reaction viscosity does not change any more, then stop the reaction.

[0037] (4) Take out the product, mix and wash the solution with ethanol and acetone with a volume ratio of 1:1, until the solution is clarified, put the washed product into a vacuum oven for drying, and grind the resulting product to obtain the final target product, namely Hydrophobic association cationi...

Embodiment 2

[0041] (1) Add hexafluorobutyl methacrylate, dimethyl diallyl ammonium chloride, and propylene into a three-necked flask equipped with a stirrer and a spherical condenser at a mass ratio of 1:4:9:27. amide and deionized water.

[0042] (2) Fill the reaction device with high-purity nitrogen, remove the air in the reaction device completely after 1 hour, and then heat and stir.

[0043] (3) At 60°C, use a constant pressure dropping funnel to add dropwise a mixed solution of potassium persulfate and sodium bisulfite (mass ratio: 3:2) with 1.0% of the total mass of the monomers. Heat to reflux for 3 hours until the reaction viscosity does not change any more, then stop the reaction.

[0044] (4) Take out the product, mix and wash the solution with ethanol and acetone with a volume ratio of 1:1, until the solution is clarified, put the washed product into a vacuum oven for drying, and grind the resulting product to obtain the final target product, namely Hydrophobic association c...

Embodiment 3

[0046] (1) Add trifluoroethyl acrylate, dimethylaminoethyl methacrylate, acrylamide and deionized water.

[0047](2) Fill the reaction device with high-purity nitrogen, remove the air in the reaction device completely after 0.7h, and then heat and stir.

[0048] (3) At 65° C., a constant-pressure dropping funnel was used to drop a potassium persulfate solution of 2.0% of the total mass of the monomers. Heat to reflux for 3.5 hours until the reaction viscosity no longer changes, and stop the reaction.

[0049] (4) Take out the product, mix and wash the solution with ethanol and acetone with a volume ratio of 1:1, until the solution is clarified, put the washed product into a vacuum oven for drying, and grind the resulting product to obtain the final target product, namely Hydrophobic association cationic polyacrylamide.

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Abstract

The invention discloses hydrophobic association type cationic polyacrylamide, which is prepared through a reaction system comprising a cationic monomer, a fluorine containing monomer, acrylamide, deionized water and an initiator, wherein the mass ratio of the fluorine containing monomer, the cationic monomer, the acrylamide to the deionized water is 1:(1-5):(5-10):(20-30), the initiator accounting for 0.5-3% of total mass of the monomers. The hydrophobic association type cationic polyacrylamide has stronger adsorption capability and can be used for wastewater treatment or removal of impurities in the field of industrial production better.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of functional high molecular polymers, and relates to a method for synthesizing water-soluble high molecular polymers, in particular to a hydrophobic association cationic polyacrylamide and its preparation method and application. [0003] 【Background technique】 [0004] According to the degree of ionization, polyacrylamide can be divided into anionic type, cationic type, nonionic type and amphoteric type. Since most colloidal particles in sewage are negatively charged, cationic flocculants are the main products on the market. Cationic flocculant is a kind of water-soluble polymer with positively charged active groups on the molecular chain. It can neutralize the particles in the water, absorb and bridge, and destabilize and flocculate the particles in the water. And help sedimentation and filtration dehydration. It has the advantages of less dosage, low cost of waste water or sludge treatment, low toxicity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/22C08F220/34C08F226/02C02F1/56
CPCC08F220/56C02F1/56C08F220/22C08F220/34C08F226/02
Inventor 郭睿王映月土瑞香马兰宋博郭煜李云鹏高弯弯
Owner SHAANXI UNIV OF SCI & TECH
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