Cationic Temperature-Resistant Salt-Resistant Polyacrylamide for Thickener Free Sample

Dec 01, 2016 · Acrylamide copolymers with cationic or anionic monomers exhibit good thickening, acid resistance, high-temperature stability, ... synthesized the polymer thickening agent DXGY-1, which is a cationic polyacrylamide. Its viscosity retention ratio in 12% HCl + 3% HF reached 82%. Liu et al. ... and the resulting samples were stored for use. (2)

which has the highest surface activity, good heat-resistant and salt resistance. However, the synthesis is very difficult and the cost is high, Pang et al. perform molecular dynamics simulations absorption so it is commonly used in combination with cheaper hydrocarbon of the surfactants containing the same hydrophobic carbon: anionic surfactant ...

Feb 05, 2017 · When the salinity reaches 80,000 mg/L, thickening ability of the system is the strongest. With the rise in temperature, the viscosity of polymer solutions with various concentrations decreases slightly except for the two concentrations of 1000 mg/L and 1100 mg/L, their viscosity increases with the increasing of temperature.

Jul 21, 2017 · Abstract: Water-soluble polymers are widely used in oilfields.The rheological behaviors of these polymers in high-salinity solution are very important for stimulation of high-salinity reservoirs. In this work, a novel thermal-resistant and shear-stable amphoteric polyacrylamide (PASD), prepared from acrylamide (AM), sodium styrene sulfonate (SSS), and …

Jul 21, 2017 · The cationic or anionic polyacrylamide exhibited perfect temperature resistance and thickening ability in fresh water. Copolymers bearing only positive or negative charges possess only electrostatic repulsive forces in their molecular chains. The polymer chain expands to have a large hydrodynamic volume in fresh water.

Compared with polyacrylamide, the temperature resistance of SL-PAM has no obvious advantage, but salt tolerance of SL-PAM is good within a certain range of salinity. View Show abstract