The role of redispersible emulsion powder in mortar
1. The addition of dispersible emulsion powder in mortar can improve the bending strength and flexural strength of mortar
The polymer film formed by using dispersible emulsion powder has good flexibility. The film is formed in the interstices of cement mortar particles and on the surface, constituting a flexible connection. This makes brittle cement mortars flexible. Mortar with re-dispersible emulsion powder is several times higher than ordinary mortar in terms of tensile and flexural strength.
2. Improve the weather resistance of mortar, freeze-thaw resistance and prevent mortar cracking
Redispersible emulsion powder is a thermoplastic resin with good flexibility, which can make the mortar cope with external changes in hot and cold environment and effectively prevent the mortar from cracking due to the change of temperature difference.
3.Improve the bonding strength and cohesion of mortar
As an organic binder, the re-dispersible emulsion powder can form high tensile strength and adhesive strength on different substrates after film formation. It plays an important role in the adhesion of mortar to organic materials (EPS, extruded plastic foam boards) and smooth surface substrates. The film-forming polymer powder is distributed throughout the mortar system as a reinforcing material, increasing the cohesion of the mortar. It increases the impact resistance, durability and abrasion resistance of the mortar. The particles fill the pore cavities of the mortar, increasing the density of the mortar and improving the abrasion resistance. Under the action of external forces will produce loosening without being destroyed. The polymeric adhesive film can permanently exist in the mortar system.
4. improve the construction and ease of mortar
There is a lubricating effect between the polymer powder particles, so that the mortar components can flow separately, while the powder has an inductive effect on the air, giving the compressibility of the mortar and improving the construction and ease of the mortar.
5. Improve the hydrophobicity of mortar and reduce the water absorption rate
Redispersible emulsion powder forms a film in the pore cavity and surface of mortar, and the polymer film will not be dispersed twice after encountering water, which prevents the invasion of water and improves the impermeability. Special re-dispersible emulsion powders with hydrophobic effect have a better water repellent effect.
Along with the development of the mortar industry, the application of re-dispersible emulsion powders is becoming more and more extensive. The production of mortar has been inseparable from the addition of re-dispersible emulsion powder, adding different types of re-dispersible emulsion powder mortar will have different properties and roles, which has to be attributed to human wisdom, good mortar casting good buildings, good buildings to bring people a better life.
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