The role of Redispersible Polymer Powder in mortar

The Redispersible Polymer Powder can be quickly re-dispersed into emulsion after contacting with water, and has the same properties as the initial emulsion, a film can be formed after evaporation of water, which has high flexibility, high weather resistance and high adhesion to various substrates. In addition, the Redispersible Polymer Powder with hydrophobicity can make the mortar has good waterproof.

Redispersible Polymer Powder is mainly used in:

Internal and external wall putty powder, ceramic tile adhesive, ceramic tile grouting agent, dry powder interface agent, external insulation mortar, self-levelling mortar, repair mortar, decorative mortar, waterproof mortar external insulation dry mortar in. In the mortar are in order to make the traditional cement mortar brittleness, high modulus of elasticity and other weaknesses are improved, endowed with cement mortar better flexibility and tensile bonding strength to resist and delay the generation of cracks in cement mortar, due to the polymers and mortar to form an interpenetrating network structure, the formation of continuous polymer film in the pore space to strengthen the bond between the aggregates, blocked some of the pore space within the mortar, so the hardened Modified mortar has a great improvement in performance than cement mortar.

The role of Redispersible Polymer Powder in mortar is mainly the following:

1. Increase the compressive and flexural strength of the mortar.

2. The addition of latex powder improves the elongation of the mortar thereby increasing the impact toughness of the mortar and also gives the mortar a good stress dispersion.

3. The bonding property of mortar is improved. The bonding mechanism relies on the adsorption and diffusion of macromolecules on the sticky surface, while the adhesive powder has a certain permeability, and cellulose ether together with the surface of the grass-roots materials fully infiltrated, so that the grass-roots level and the surface properties of the new plaster are close to the surface, thus improving the adsorption, so that its performance is greatly increased.

4. Reduces the modulus of elasticity of the mortar, improves deformability and reduces cracking.

5. Improve the abrasion resistance of mortar. The improvement of abrasion resistance is mainly due to the presence of a certain number of gum crooks on the surface of the mortar, the gum powder plays a bonding role, and the net film structure formed by the gum powder can pass through the holes and cracks in the cement mortar. It improves the bonding between the base material and the hydration products of cement, thus improving the abrasion resistance.
   

6. Gives the mortar excellent alkali resistance.

7. Improvement of putty cohesion, excellent resistance, alkali resistance, abrasion resistance, increased flexural strength.

8. Enhance the waterproofing and penetration of the putty.
   

9. Improves the water retention of the putty, increases the open time and improves the compatibility.

10. Improves putty impact resistance and enhances putty durability.

Redispersible Polymer Powder is made of polymer emulsion by spray drying, mixed with water in the mortar, emulsified and dispersed in water, re-forming a stable polymer emulsion, Redispersible Polymer Powder emulsified and dispersed in water, water evaporation, the formation of a polymer film within the mortar, to improve the performance of the mortar, the different Redispersible Polymer Powder has some different roles in the dry powder mortar.