Acrylamide copolymer, and preparation method and application thereof
An acrylamide-based, copolymer technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of poor fluid loss resistance, limited resistance-reducing performance, and insignificant water-sensitivity effect, etc. Capacitive, high drag reduction rate, simple monomer conversion effect
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Embodiment 1
[0097] This example is used to illustrate the preparation of acrylamide copolymer by the solution polymerization method provided by the present invention.
[0098] At room temperature, 38.38g of acrylamide (AM), 39.65g of M1 monomer represented by formula (37), 4.03g of N,N-dimethylacrylamide (purchased from Sigma-Aldrich Company) and 0.41g The M2 monomer represented by the formula (38) (prepared according to the method of the document Macromolecular Bioscience, 2006, 6(7), 540-554, the same below) was added to the reaction flask, 329.88g of deionized water was added, and stirred to make The monomer is completely dissolved and stirred evenly. 5.4 g of 1% by weight aqueous EDTA solution, 2.0 g of 1% by weight azobisisobutylamidine hydrochloride aqueous solution, and 0.12 g of urea were respectively added to the flask, and stirred well to make them uniform. Use 1% by weight of sodium hydroxide solution to pH 7.4, add 1.1 g of 0.5% by weight of sodium bisulfite solution, control...
Embodiment 2
[0107] This example is used to illustrate the preparation of acrylamide copolymer by the solution polymerization method provided by the present invention.
[0108] At room temperature, add 35.23g of methacrylamide, 72.1g of M3 monomer represented by formula (40), 10.25g of tert-butyl acrylate and 0.01g of M2 monomer represented by formula (38) to the polymerization In the bottle, add 218.38g of deionized water, stir to dissolve the monomer completely, add 7.56g of 1% by weight of EDTA aqueous solution to the flask, add 2.13g of 1% by weight of azobisisobutylamidine hydrochloride aqueous solution, add 0.1% by weight of sodium bisulfite solution 3.2g, add 0.20g of urea, stir well to make it evenly mixed. The initial temperature of the system was controlled to 8°C, and after 30 minutes of nitrogen deoxygenation, 1.0 g of 1% ammonium persulfate aqueous solution was added and nitrogen deoxygenation was continued for 10 minutes. Seal the reactor and keep it at 8°C. After reacting f...
Embodiment 3
[0113] This example is used to illustrate the preparation of acrylamide copolymer by the solution polymerization method provided by the present invention.
[0114] At room temperature, 14.38g of methacrylamide, 11.61g of M4 monomer represented by formula (42), 7.12g of N-tert-butylacrylamide and 0.06g of M2 monomer represented by formula (38) Add it into the reaction bottle, add 77.26g of deionized water, stir to dissolve the monomer completely, and stir evenly. 4.65 g of a 1% by weight aqueous EDTA solution, 1.03 g of a 1% by weight azobisisobutylamidine hydrochloride aqueous solution, and 0.21 g of urea were added to the flask, and stirred well to make them uniform. The pH was adjusted to 7.1 with solid sodium hydroxide. Add 1.1 g of 0.5% by weight sodium bisulfite solution, control the initial temperature of the system to 10°C, pass nitrogen to deoxygenate for 30 minutes, add 1.1 g of 1% by weight ammonium persulfate aqueous solution, and continue to pass nitrogen to remov...
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Abstract
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Application Information
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