The main application of redispersible latex powder
Internal and external wall putty powder, tile adhesive, tile pointing agent, dry powder interface agent, external thermal insulation mortar for external walls, self-leveling mortar, repair mortar, decorative mortar, waterproof mortar external thermal insulation dry-mixed mortar. In the mortar, it is to improve the brittleness, high elastic modulus and other weaknesses of the traditional cement mortar, and to endow the cement mortar with better flexibility and tensile bond strength, so as to resist and delay the generation of cement mortar cracks. Since 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 some pores in the mortar, so the modified mortar after hardening is better than cement mortar. There is a big improvement.
Product properties of redispersible latex powder
1. Improve the bending strength and flexural strength of mortar
The polymer film formed by redispersible polymer powder has good flexibility. Films are formed in the gaps and surfaces of cement mortar particles to form flexible connections. Heavy and brittle cement mortar becomes elastic. Mortar added with redispersible latex powder is several times higher in tensile and flexural resistance than ordinary mortar.
2. Improve the bonding strength and cohesion of mortar
After the redispersible latex powder as an organic binder is formed into a film, it can form high tensile strength and bonding strength on different substrates. It plays an important role in the adhesion of mortar to organic materials (EPS, extruded foam board) and smooth surface substrates. The film-forming polymer rubber powder is distributed throughout the mortar system as a reinforcing material to increase the cohesion of the mortar.
3. Improve the impact resistance, durability and wear resistance of mortar
The rubber powder particles fill the cavity of the mortar, the density of the mortar is increased, and the wear resistance is improved. Under the action of external force, it will produce relaxation without being destroyed. The polymer film can be permanently present in the mortar system.
4. Improve the weather resistance and freeze-thaw resistance of mortar, and prevent mortar from cracking
Redispersible latex powder is a thermoplastic resin with good flexibility, which can make the mortar cope with the change of external cold and hot environment, and effectively prevent the mortar from cracking due to the change of temperature difference.
5. Improve the hydrophobicity of mortar and reduce water absorption
The redispersible latex powder forms a film on the cavity and surface of the mortar, and the polymer film will not disperse again after being exposed to water, which prevents the intrusion of water and improves the impermeability. Special redispersible latex powder with hydrophobic effect, better hydrophobic effect.
6. Improve the workability of mortar construction
There is a lubricating effect between the polymer rubber powder particles, so that the mortar components can flow independently. At the same time, the rubber powder has an inductive effect on the air, giving the mortar compressibility and improving the construction workability of the mortar.
Post time: Apr-12-2023