It is necessary to add redispersible polymer powder to the cement dry mortar, because the redispersible polymer powder mainly has the following six advantages, the following is an introduction for you.
1. Improve adhesive strength and cohesion
Redispersible polymer powder has a great effect on improving the bonding strength and cohesion of the material. Due to the penetration of the polymer particles into the pores and capillaries of the cement matrix, a good cohesion is formed with the cement after hydration. The polymer resin itself has excellent properties. The adhesion of cement mortar products is more obvious in improving the adhesion of cement mortar products to substrates, especially the poor adhesion of inorganic binders such as cement to wood, fiber, PVC, EPS and other organic substrates.
2. Improve freeze-thaw stability and effectively prevent material cracking
Redispersible latex powder, the plasticity of its thermoplastic resin, can overcome the damage of thermal expansion and contraction caused by temperature difference to cement mortar materials. Overcoming the characteristics of large drying shrinkage and easy cracking of simple cement mortar, it can make the material flexible, thereby improving the long-term stability of the material.
3. Improve bending and tensile resistance
In the rigid skeleton formed by the hydration of cement mortar, the polymer film is elastic and tough. Between the cement mortar particles, it functions like a movable joint, which can withstand high deformation loads and reduce the stress, making the Tensile and bending resistance are improved.
4. Improve impact resistance
Redispersible latex powder is a thermoplastic resin. It is a soft film coated on the surface of the mortar particles, which can absorb the impact of external force and relax without breaking, thereby improving the impact resistance of the mortar.
5. Improve hydrophobicity and reduce water absorption
Adding cocoa dispersible polymer powder can improve the microstructure of cement mortar. Its polymer forms an irreversible network in the process of cement hydration, closes the capillaries in the cement gel, blocks the penetration of water, and improves the impermeability.
6. Improve wear resistance and durability
The addition of redispersible latex powder can increase the dense bond between the cement mortar particles and the polymer film. The enhancement of the cohesive force correspondingly improves the ability of the mortar to withstand shear stress, so that the wear rate is reduced, the wear resistance is improved, and the service life of the mortar is prolonged.
Post time: Oct-28-2022