The film of redispersible polymer powder RDP is elastic and tough, in the rigid skeleton formed by the hydration of cement mortar. Between the particles of the cement mortar, it functions like a movable joint, which can bear high deformation loads, reduce the stress, and improve the tensile and bending resistance.
Redispersible polymer powders improve impact resistance for thermoplastic resins. It is a soft film coated on the surface of the mortar particles, and the redispersible latex powder can absorb the impact of external forces, relax without damage, thereby improving the impact resistance of the mortar. Redispersible latex powder increases hydrophobicity, reduces water absorption, and can improve the microstructure of cement mortar.
Its polymer forms an irreversible network during cement hydration, adding redispersible latex powder. The capillary in the cement gel is closed to block the absorption of water, prevent the penetration of water, and improve the impermeability. Redispersible polymer powder improves abrasion resistance durability.
Redispersible latex powder is mainly used in dry cement mortar in the construction industry, and is an important additive for dry cement mortar. The role of dry cement mortar is significant, which can improve the bonding strength and cohesion of the material, improve the elastic bending strength and flexural strength of the material, improve the freeze-thaw resistance of the material, and improve the weather resistance, durability and wear resistance of the material. Improve the hydrophobicity of the material, reduce the water absorption rate, improve the workability, reduce the shrinkage rate of the material, and effectively prevent cracking. , to improve bending and tensile resistance.