Analysis on the Properties and Effects of Redispersible Latex Powder

The redispersible latex powder product is a water-soluble redispersible powder, which is a copolymer of ethylene and vinyl acetate, and uses polyvinyl alcohol as a protective colloid. Due to the high binding capacity and unique properties of redispersible polymer powders, such as: water resistance, construction and heat insulation, etc., their application range is extremely wide.

Redispersible latex powder is mainly used in: interior and exterior wall putty powder, tile adhesive, tile pointing agent, dry powder interface agent, exterior wall insulation mortar, self-leveling mortar, repair mortar, decorative mortar, waterproof mortar, etc. In dry mix mortar. the

Redispersible latex powder is a green, environmentally friendly, building energy-saving, high-quality multi-purpose powder building material, and is an essential and important functional additive for dry-mixed mortar. 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 workability, compressive strength, flexural strength, wear resistance, toughness, adhesion of mortar Relay and water retention capacity, constructability. In addition, the hydrophobic latex powder can make the mortar very waterproof.

The role of redispersible latex powder:

1. After dispersion, the redispersible latex powder forms a film and acts as a second adhesive to enhance the effect;

2. The protective colloid is absorbed by the mortar system (it will not be destroyed by water after film formation, or “secondary dispersion”;

3. The film-forming polymer resin is distributed in the entire mortar system as a reinforcing material, thereby increasing the cohesion of the mortar; the redispersible latex powder is a kind of spray-dried special emulsion (polymer) made Powder binder. This powder can quickly redisperse to form an emulsion after contacting with water, and has the same properties as the initial emulsion, that is, a film can be formed after the water evaporates. This film has high flexibility, high weather resistance and resistance to various High adhesion to substrates.