As a modern dry-mixed mortar material, self-leveling mortar can be significantly improved by adding latex powder. It can play an important role in increasing the tensile strength, flexibility and enhancing the adhesion with the base surface of the self-leveling floor material.
Redispersible latex powder is a commonly used organic gelling material. This powder can be evenly dispersed in water again to form an emulsion when it meets water. Adding Redispersible latex powder can improve the water retention performance of freshly mixed cement mortar, as well as the bonding performance, flexibility, impermeability and corrosion resistance of hardened cement mortar.
Effect of Redispersible Polymer Powder on Self-Leveling Tensile Properties
The increase of latex powder content on the bulk tensile strength and elongation at break of self-leveling floor materials. With the increase of the latex powder content, the cohesion (tensile strength) of the self-leveling material is significantly improved, and the flexibility and Redispersible of the cement-based self-leveling material are also significantly improved. This is consistent with the fact that the tensile strength of latex powder itself is more than 10 times that of cement. When the content is 4%, the tensile strength is increased by more than 180%, and the elongation at break is increased by more than 200%. From the perspective of health and comfort, the improvement of this flexibility is beneficial to reduce noise and improve the fatigue of the human body standing on it for a long time.
Effect of Redispersible latex powder on wear resistance of self-leveling
Although the wear resistance requirements of the bottom self-leveling material are not as high as those of the surface layer, since the ground inevitably bears various dynamic and static stresses [from furniture casters, forklifts (such as warehouses) and wheels (such as parking lots), etc.], A certain wear resistance is one of the important properties of the long-term durability of the self-leveling floor. The increase in the amount of latex powder increases the wear resistance of the self-leveling material. The self-leveling material without latex powder is After 7 days of maintenance in the laboratory, the bottom has been worn out after only 4800 times of reciprocating rolling. This is because the latex powder enhances the cohesion of the self-leveling material and improves the plasticity (that is, deformability) of the self-leveling material, so that it can well disperse the dynamic stress from the roller.
Post time: Mar-04-2023