The rubber powder is formed by high temperature, high pressure, spray drying and homopolymerization with a variety of active reinforcing micropowders, which can significantly improve the bonding ability and tensile strength of the mortar, and has good construction performance of anti-falling, water retention and thickening, water resistance and freeze-thaw resistance , Excellent heat aging resistance, simple ingredients, easy to use, allowing us to produce high-quality dry-mixed mortar. Common applications of redispersible polymer powders are:
Adhesives: tile adhesives, adhesives for construction and insulation panels;
Wall mortar: external wall insulation mortar, decorative mortar;
Floor mortar: self-leveling mortar, repair mortar, waterproof mortar, dry powder interface agent;
Powder coating: interior and exterior wall and ceiling putty powder, latex powder modified lime-cement plaster and paint;
Joint filler: tile grout, joint mortar.
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, formulated The synthetic resin modified premix can be used only by adding water, which not only avoids errors in mixing at the construction site, but also improves the safety of product handling.
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. has improved.
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 in the entire mortar system, thereby increasing the cohesion of the mortar.