Redispersible latex powder is a kind of powder adhesive made by special lotion spray drying. This kind of powder can be quickly dispersed into lotion after contacting with water, and has the same properties as the initial lotion, that is, the water can form a film after evaporation. This film has high flexibility, high weather resistance and high adhesion to various substrates. In addition, latex powder with hydrophobicity can make the mortar have good waterproof properties. Separable white latex has a longer storage period, is antifreeze resistant, and is easy to store. Looking at the detailed knowledge from the west.
1、 What is redispersible latex powder
The redispersible latex powder product is water-soluble redispersible powder, which is divided into ethylene/vinyl acetate copolymer, vinyl acetate/ethylene tert carbonate copolymer, acrylic acid copolymer, etc. The powder adhesive made after spray drying uses polyvinyl alcohol as protective colloid. 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.
2、 Advantages of redispersible latex powder
1. No need to store and transport with water, reducing transportation costs;
2. Long storage period, anti freezing, easy to keep;
3. The packaging is small in size, light in weight, and easy to use;
4. 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.
3、 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 purpose is to improve the brittleness, high elastic modulus and other weaknesses of traditional cement mortar, endowing it with good flexibility and tensile bonding strength to resist and delay the generation of cement mortar cracks. Due to the formation of an interpenetrating network structure between the polymer and mortar, a continuous polymer film is formed in the pores, strengthening the bonding between aggregates and blocking some of the pores in the mortar, So the modified mortar after hardening has a significant improvement in performance compared to cement mortar.
Post time: Aug-04-2023