Action mechanism of lignosulfonate modified sulfonated melamine formaldehyde resin on the dispersion and stabilization of cement particles in water

作者：Wang, Xiaoping; Yi, Conghua; Wei, Min; Qiu, Xueqing^*

来源：Polymer Materials Science and Engineering, 2011, 27(6): 134-136+141.

• Action mechanisms
• Adsorption properties
• Cement particles
• Electrostatic repulsion forces
• Retention ability
• Steric hindrances
• Superplasticizers
• Water dispersion

Air entraining property, the adsorption property and effect to the Zeta potential of lignosulfonate modified sulfonated melamine formaldehyde resin (SLMF) on the surface of cement particles in water were studied. The results show that the combined action of the electrostatic repulsion force derives from the charged -SO3- and -COO-, the space steric hindrance force derives from the adsorbed superplasticizer layer, and the air entraining action (so-called "ball bearing action") of SLMF results in the dispersion of cement particles in water; the combined action of the strong retention ability of electrostatic repulsion force, set retarding action and bubble floating action of SLMF result in the stabilization of cement-water dispersion system.

• 出版日期2011-6
• 单位华南理工大学