Common applications of redispersible latex powder
1. Adhesives: tile adhesives, adhesives for construction and insulation boards;
2. Wall mortar: external wall insulation mortar, decorative mortar;
3. Floor mortar: self-leveling mortar, repair mortar, waterproof mortar, dry powder interface agent;
4. Powder coating: interior and exterior wall and ceiling putty powder, latex powder modified lime-cement plaster and coating;
5. Joint filler: ceramic tile pointing agent, joint mortar.
Redispersible latex powder can significantly improve the bonding ability and tensile strength of the mortar. It has good anti-dropping, water-retaining and thickening construction performance, outstanding water resistance, freeze-thaw resistance, heat aging resistance, simple ingredients, and convenient use. Xindadi rubber powder has excellent compatibility with cement, can be completely dissolved in cement-based dry-mixed mortar paste, does not reduce the strength of cement after curing, not only maintains excellent adhesion, film-forming properties and flexibility, but also has good Weather resistance, stability, bonding performance and crack resistance. After drying, it can effectively prevent the erosion of acidic air on the wall, and it is not easy to pulverize and deliquesce after being wet. It can improve the performance of mortar, increase the strength of mortar, improve the bonding strength between mortar and various substrates, improve the flexibility and variability, compressive strength, flexural strength, wear resistance, toughness, adhesion and Water retention capacity, constructability. In addition, the hydrophobic latex powder can make the mortar very waterproof.
Redispersible latex powder does not need to be stored and transported together with water, which reduces transportation costs; it has a long storage period, is antifreeze, and is easy to store; the packaging is small in size, light in weight, and easy to use; it can be mixed with hydraulic binders to form The synthetic resin-modified premix only needs to be added with water, which not only avoids errors in mixing at the construction site, but also improves the safety of product handling.
Redispersible latex powder is used in mortar to improve the brittleness and high elastic modulus of traditional cement mortar, and to endow cement mortar with better flexibility and tensile bond strength to resist and delay cement mortar. The occurrence of mortar cracks, because the polymer and mortar form an interpenetrating network structure, forms a continuous polymer film in the pores, strengthens the bonding between aggregates, and blocks some pores in the mortar, so the modification after hardening The performance of mortar is much improved than that of cement mortar.
The redispersible latex powder is dispersed to form a film and act as a reinforcement as a second adhesive; the protective colloid is absorbed by the mortar system (it will not be destroyed by water after film formation, or “secondary dispersion”); the film-forming polymer resin As a reinforcing material, it is distributed throughout the mortar system, thereby increasing the cohesion of the mortar.
Post time: Mar-10-2023