This kind of powder can be quickly redispersed into lotion after contacting with water. Because redispersible latex powder has high adhesive ability and unique properties, such as water resistance, workability and heat insulation, their application range is extremely wide.
Advantages of redispersible latex powder:
No need to store and transport with water, reducing transportation costs; Long storage period, anti freezing, easy to keep; The packaging is small in size, light in weight, and easy to use; It can be mixed with a water-based binder to form a synthetic resin modified premix. When used, only water needs to be added, which not only avoids errors during mixing on site, but also improves the safety of product handling.
Application of redispersible latex powder
Redispersible latex powder is mainly used in: interior and exterior wall putty powder, ceramic tile adhesive, ceramic tile pointing agent, dry powder interface agent, exterior wall insulation mortar, self-leveling mortar, repair mortar, decorative mortar, waterproof mortar, exterior insulation dry mixed mortar. In mortar, the aim is to improve the brittleness and high elastic modulus of traditional cement mortar, endowing it with good flexibility and tensile bonding strength to resist and delay the occurrence of cracks in cement mortar. Due to the formation of an interpenetrating network structure between polymers and mortar, a continuous polymer film is formed in the pores, which strengthens the bonding between aggregates and blocks some pores in the mortar. Therefore, the performance of hardened modified mortar is greatly improved compared to cement mortar.
The role of redispersible latex powder in mortar:
1. Improve the compressive strength and flexural strength of mortar. 2. The addition of latex powder improves the elongation of mortar, thereby enhancing its impact toughness, and also endows it with good stress dispersion effect. 3. Improved the bonding performance of mortar. The bonding mechanism relies on the adsorption and diffusion of macromolecules on the bonding surface, while the adhesive powder has a certain degree of permeability and fully infiltrates the surface of the base material with cellulose ether, making the surface performance of the base material close to that of the new plaster, thereby improving the adsorption and greatly increasing its performance. 4. Reduce the elastic modulus of mortar, improve deformation ability, and reduce cracking phenomenon. 5. Improve the wear resistance of mortar. The improvement of wear resistance is mainly due to the presence of a certain amount of adhesive particles on the surface of the mortar. The adhesive powder plays a bonding role, and the mesh structure formed by the adhesive powder can pass through the holes and cracks in the cement mortar. Improved adhesion between the base material and cement hydration products, thereby improving wear resistance. 6. Provide excellent alkali resistance to mortar
Post time: Sep-20-2023