A kind of acrylamide copolymer and its preparation method and application
A technology of acrylamide copolymer and acrylamide copolymerization, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as complex synthesis steps, difficult synthesis of macromolecular monomers, unfavorable polymer migration, etc., to achieve The effect of increasing the radius of hydration and increasing the viscosity
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[0028] At the same time, the present invention also provides a method for preparing an acrylamide copolymer, the preparation method comprising the following steps: under the solution polymerization reaction conditions of olefins, in the presence of an initiator, the monomer mixture is polymerized in water , the monomer mixture contains monomer D having the structure shown in formula IV, monomer E having the structure shown in formula V and monomer F having the structure shown in formula VI, and the monomer D, the monomer The weight ratio of body E and said monomer F is 1:(0.01~0.65):(0.01~0.65),
[0029]
[0030] In Formula IV, R 1 ' is any one of H and C1-C4 alkyl; in formula VI, R 2 ', R 3 'are independently selected from any one of H and C1~C12 alkyl groups; R 4 ' is any one selected from H, C1-C12 alkyl groups, and C6-C12 alkyl groups. The C1-C4 alkyl group, the C1-C12 alkyl group, and the C6-C12 aryl group are the same as those described above, and will not be repe...
Embodiment 1
[0061] It is used to illustrate the acrylamide copolymer of the present invention and its preparation method.
[0062] The structure of the adopted α-methylene-γ-lactonate (commercially purchased from Aladdin Reagent Company, the same below) is as follows:
[0063]
[0064] The preparation method of acrylamide copolymer comprises:
[0065] At room temperature and under stirring conditions, add 200g of acrylamide (AM), 25g of 2-acrylamido-2-methylpropanesulfonate sodium and 25g of the above-mentioned α-methylene-γ-lactonate and 1000g of deionized water; after the raw materials are dissolved, add sodium hydroxide to the aqueous solution to adjust the pH of the aqueous solution to 7.5; then pass nitrogen gas into the aqueous solution to remove oxygen for 30 minutes and then seal the beaker to form an inert atmosphere; then add 0.01g of sodium hydroxide to the aqueous solution Ammonium sulfate and 0.01 g of sodium bisulfite were used as a redox initiator system, and then react...
Embodiment 2
[0068] It is used to illustrate the acrylamide copolymer of the present invention and its preparation method.
[0069] The α-methylene-γ-lactonate used: the same as in Example 1.
[0070] The preparation method of acrylamide copolymer comprises:
[0071] Add 225 g of acrylamide (AM), 50 g of 2-acrylamido-2-methylpropanesulfonate sodium and 12.5 g of the above-mentioned α-methylene-γ-lactonate into the beaker under stirring conditions at room temperature and 1000g of deionized water; after the raw materials are dissolved, add sodium hydroxide to the aqueous solution to adjust the pH of the aqueous solution to 6.5; then pass nitrogen gas into the aqueous solution to remove oxygen for 30min and then seal the beaker to form an inert atmosphere; then add 0.02g of The initiator 2,2'-azobis(2-methylpropionamidine) hydrochloride (AIBA) was then reacted at normal pressure and constant temperature at 50°C (water bath temperature control) for 4 hours to obtain a colloidal polymer solution...
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