Polyacrylamide is a commonly used water-soluble polymer with excellent flocculating, thickening, drag reduction and dispersion properties. It has been widely used in sewage treatment, papermaking, petroleum, chemical industry and other fields. When using polyacrylamide solutions, stirring speed is an important operating parameter that has a significant impact on the performance and effectiveness of the solution.
1.Dissolution time: Polyacrylamide takes a certain amount of time to dissolve fully in solution. The increased stirring speed accelerates the diffusion of molecules and the penetration of solvents, resulting in shorter dissolution times.
2.Molecular weight: The molecular weight of polyacrylamide is an important parameter that affects the viscosity and flocculation of the solution. Stirring too fast can cause the molecular chain to break, resulting in a decrease in molecular weight. Therefore, the right stirring speed is the key to ensure the stability of the molecular weight of polyacrylamide.
3.Viscosity: The viscosity of a polyacrylamide solution is an important indicator to measure its performance. Proper stirring speed can increase the friction between molecules and increase the viscosity of the solution. However, too fast agitation can lead to entanglement of the molecular chains, which in turn reduces the viscosity of the solution.
4.Flocculation effect: Polyacrylamide solution is often used for flocculation and sedimentation in sewage treatment and other fields. The stirring speed also has an effect on the flocculation effect. Proper stirring speed can increase the chance of particle collision and promote flocculation and sedimentation. However, too fast agitation speed may cause the particles to break, which in turn reduces the flocculation effect.