3.Redispersible polymer powder Redispersible polymer powder is a high molecular polymer emulsion. It is a powdery thermoplastic resin obtained by spray drying and subsequent processing. It is mainly used in construction, especially dry powder mortar to increase cohesion, cohesion and flexibility. The role of redispersible polymer powder in mortar: after dispersion, redispersible polymer powder forms
The tensile strength and cohesion of the polymer resin film formed by the latex powder are enhanced. due to the flexibility of the polymer. The deformation ability is much higher than that of cement stone rigid structure. The deformation properties of the mortar are improved. The effect of dispersing stress is greatly improved. Thereby improving
The process of polymer film formation is divided into three stages. In the first stage, the polymer particles move freely in the form of Brownian motion in the initial emulsion. As the water evaporates, the movement of the particles is naturally more and more restricted. The interfacial tension between water and air causes them to
Redispersible polymer powder and other inorganic adhesives (such as cement, slaked lime, gypsum, clay, etc.), as well as various aggregates, fillers, other additives (such as hydroxypropyl methylcellulose, polysaccharide (starch ether), Cellulose fibers, etc.) are physically mixed to make dry-mixed mortar. When the dry powder mortar is added to the water and stirred. Under the action
Redispersible polymer powder(RDP) is a water-soluble redispersible powder, which is a polymer of butadiene and vinyl acetate, and uses acrylic emulsion as a maintenance colloid solution. Therefore, RDP is very popular in the construction industry sales market, and the inappropriate use of RDP leads to unsatisfactory actual effects of engineering construction. The use of suitable
