redispersible powder-Redispersible latex powder used in mortar
Redispersible latex powder used in mortar
In recent years, mortar companies have added redispersible latex powder to the mortar. This is because redispersible latex powder can increase the compressive strength and flexural strength of the mortar and increase the elongation of the mortar, thereby increasing the mortar. The impact resistance of the mortar also gives the mortar good stress dispersion.
The redispersible latex powder can be quickly redispersed into an emulsion after contacting with water, and has the same properties as the initial emulsion, that is, a film can be formed after the water evaporates. This film has high flexibility, high weather resistance and various High adhesion to the substrate. In addition, the water-repellent latex powder can make the mortar have good water resistance.
Redispersible latex powder is added to the mortar to improve the brittleness and high elastic modulus of the traditional mortar, and to give the cement mortar better flexibility and tensile bonding strength to resist and delay the cement The generation of mortar gaps, because the polymer and the mortar form an interpenetrating network structure, a continuous polymer film is formed in the pores, which strengthens the bonding between the aggregates and blocks part of the pores in the mortar, so the modification after hardening The performance of mortar is much better than that of cement mortar.
Redispersible latex powder is made by spray-drying polymer emulsion. After being mixed with water in mortar, it is emulsified and dispersed in water to re-form a stable polymer emulsion. After the redispersible latex powder is emulsified and dispersed in water, the water Evaporation forms a polymer film in the mortar, which improves the performance of the mortar. Different redispersible latex powders have different effects on the mortar.
Since the use of redispersible latex powder, the workability of the mortar has been significantly improved, and segregation, bleeding, and pump blockage are rare. The user is satisfied with the workability of the mortar. The redispersible cellulose latex powder has never disappointed mortar companies.