Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of temperature-resistant, salt-resistant, shear-resistant cationic polyacrylamide

A technology of polyacrylamide and cation, which is applied in the field of preparation of high-molecular organic compound polyacrylamide, which can solve problems such as molecular chain breakage, and achieve the effects of not being easy to filter through, high mechanical strength, and less dosage

Inactive Publication Date: 2015-09-09
JINAN YONGSHENG CHEM
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method for preparing cationic polyacrylamide with temperature resistance, salt resistance and shear resistance, which solves the problem that the existing cationic polyacrylamide is prone to breakage in the environment of high temperature, high salt content and high-speed stirring question

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of temperature-resistant, salt-resistant, shear-resistant cationic polyacrylamide
  • A kind of preparation method of temperature-resistant, salt-resistant, shear-resistant cationic polyacrylamide

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] Such as figure 1 As shown, the present invention provides a method for preparing temperature-resistant, salt-resistant, and shear-resistant cationic polyacrylamide, which includes the following steps:

[0021] (1) Add 90-110 parts by weight of acrylamide monomer, 30-60 parts by weight of cationic monomer and 0.04-0.08 parts by weight of sodium formate into 100-400 parts by weight of long-chain alkanes with a weight ratio of 0.5-3.0% Dissolve and mix uniformly in the water system of quaternary ammonium salt based double bond;

[0022] (2) Blow nitrogen at 0~30℃ to remove dissolved oxygen;

[0023] (3) Cool down to 0~10℃, add 0.04~0.08 parts by weight of initiator, mix well, and polymerize to form a transparent rubber block;

[0024] (4) After granulation, drying and crushing, the finished product of cationic polyacrylamide is obtained.

Embodiment 1

[0026] This embodiment provides a method for preparing cationic polyacrylamide that is temperature-resistant, salt-resistant, and shear-resistant. The process flow chart is as follows figure 1 Shown.

[0027] In a 500-liter stainless steel polymerizer, add 135Kg of deionized water, weigh 1.3Kg of tetradecyl allyl dimethyl ammonium chloride, add to the water, stir at high speed for 20 minutes, and make a weight ratio of 0.96% Tetradecyl allyl dimethyl ammonium chloride micellar water system, add 46Kg acrylamide monomer, 18Kg methacryloxyethyl trimethyl ammonium chloride 0.0227Kg sodium formate to the above tetradecyl allyl Dissolve and stir evenly in the dimethylammonium chloride micellar water system. Blow nitrogen gas at 25°C for 30 minutes to remove oxygen. After removing oxygen, the residual oxygen content is 0.2mg / L. Cool down to 5°C, add 0.02Kg of benzoyl peroxide, 0.005Kg of potassium persulfate, and 0.004Kg of ferrous sulfate, mix well, and polymerize at rest for 4 hours...

Embodiment 2

[0029] This embodiment provides a method for preparing cationic polyacrylamide that is temperature-resistant, salt-resistant, and shear-resistant. The process flow chart is as follows figure 1 Shown.

[0030] In a 500-liter stainless steel polymerizer, add 70Kg of deionized water, weigh out 0.95Kg of hexadecylallyldimethylammonium chloride, add to the water, stir at high speed for 20 minutes, and make a weight ratio of 1.37. Tetraalkylallyldimethylammonium chloride micellar water system, 41.5Kg acrylamide monomer, 26.7Kg dimethyldiallylammonium chloride, 0.0202Kg sodium formate are added to the above tetradecylallyl Dissolve and stir in the dimethyl ammonium chloride micellar water system. Blow nitrogen at 15°C for 30 minutes to remove oxygen. After removing oxygen, the residual oxygen content is 0.1mg / L. Cool down to 5°C, add 0.01Kg of benzoyl peroxide, 0.005Kg of potassium persulfate, and 0.0038Kg of ferrous sulfate, mix well, and polymerize at rest for 4 hours to form a tran...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing temperature-resistant, salt-resistant and shearing-resistant cationic polyacrylamide, and the method comprises the following steps of: adding 90-110 parts by weight of acrylamide monomer, 30-60 parts by weight of cationic monomer and 0.04-0.08 part by weight of sodium formate into 100-400 parts by weight of long-chain alkyl double-bond quaternary ammonium salt micelle water system with the weight ratio of 0.5-3.0%, and then dissolving and mixing uniformly; removing dissolved oxygen by blowing nitrogen at 0-30 DEG C; decreasing the temperature to 0-10 DEG C, adding 0.04-0.08 parts by weight of initiator, mixing uniformly, and polymerizing to generate a transparent rubber block; and granulating, drying and crushing to obtain finished cationic polyacrylamide. The molecular weight of the cationic polyacrylamide prepared by the invention can be above 30 million; the cationic polyacrylamide has general temperature-resistant, salt-resistant and shearing-resistant properties; and furthermore, due to hydrophobic association, the viscosity is increased by above three times.

Description

Technical field [0001] The invention relates to the technical field of preparation of polymer organic compound polyacrylamide, in particular to a preparation method of cationic polyacrylamide which is resistant to temperature, salt and shear. Background technique [0002] Common cationic polyacrylamide is copolymerized with acrylamide monomer (AM) and short-chain double bond quaternary ammonium salt. Such cationic monomers include methacryloxyethyl trimethyl ammonium chloride (DAM), dimethyl diallyl ammonium chloride (DAAC), acryloxyethyl trimethyl ammonium chloride (DMC), etc. Although it has many characteristics of cationic polyacrylamide under normal circumstances, its performance will be significantly reduced under many severe conditions. Specifically, the molecular weight (or apparent viscosity) is greatly reduced. As we all know, when the molecular structure is the same, the higher the molecular weight, the better the effect. Therefore, the desire to maintain its molecul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F226/02C08F220/34
Inventor 许振举
Owner JINAN YONGSHENG CHEM