| abstract |
The invention relates to the field of petrochemical industry, and discloses an acrylamide copolymer, a preparation method and application thereof. The acrylamide copolymer contains a structural unit A, a structural unit B and a structural unit C, wherein the structural unit A is a unit having a structure shown in formula (1), and the structural unit B is a unit having a structure shown in formula (2)- At least one of the units of the structure shown in formula (7), the structural unit C is a unit with the structure shown in formula (8), and the weight ratio of the three structural units is 1:0.001-10:0.001-10 , the viscosity-average molecular weight of the acrylamide copolymer is 1 million-40 million. The copolymer of the invention has good water solubility and low residual monomer content. Especially under the conditions of high temperature and high salt, the apparent viscosity, thickening performance and oil dispersing ability of the solution are greatly improved compared with conventional polyacrylamide. |