Application of polyacrylamide in the field of building materials?

Concrete uses nonionic polyacrylamide as an additive to produce obvious effects. Nonionic polyacrylamide is a water-soluble polymer or polyelectrolyte. Because its molecular chain contains polar groups, it can adsorb solid particles suspended in water to bridge the particles or condense the particles to form large floccules through charge neutralization. Therefore, it can accelerate the sedimentation of particles in the suspension, and has very obvious effects of accelerating solution clearance and promoting filtration.

In the field of building materials, polyacrylamide is widely used as an external additive for concrete, which interacts with the concrete particles, thereby increasing the strength and toughness of concrete. The application of polyacrylamide in building materials such as concrete, putty powder, and mortar king has been widely promoted. It mainly plays the role of flocculation, water retention, thickening, bonding, and lubrication. In addition, polyacrylamide has a good water retention effect in other building materials because of its strong viscosity and its special molecular structure. It is commonly used as a thickener for putty powder, a refractory adhesive, and a thickener and water-retaining agent for mortar.

In the process of these practical applications, we found that most of the applications in these fields currently use anionic or nonionic polyacrylamide. Anionic polyacrylamide has been well promoted due to its high viscosity and good water retention effect, but due to the differences in its formula, many nonionic polyacrylamide has better results. Both anionic and nonionic products use their viscosity increasing, water retention, flocculant, lubricity and other properties to give full play to their application advantages. Since it has been increasingly widely used in the construction field in recent years

In actual infrastructure construction, construction workers should choose nonionic polyacrylamide according to the characteristics of mud, especially glue and interior wall coatings. According to actual needs, anionic and nonionic polyacrylamide should be correctly selected as thickeners or flocculants to improve the efficiency of industrial production.