Redispersible Polymer Powder
CAS:24937-78-8
Product Description
Redispersible polymer powder is water-soluble dispersible polymer powder based on VAc/E, after the application of the mortar, can give the mortar the following properties:
- Improve the cohesion, and theRDPÂ powder forms a film between the hydration products, the capillary wall of the cement mortar, and the micro-cracks.
- Improve the bonding strength with the interface, and the RDP powder forms a film at the interface to improve the intermolecular force.
- Improve the flexibility and deformability of the mortar, and the adhesive film can reduce the amount of elastic film, bridge the micro-cracks in the sand frame, and the interface between the cementitious material and the aggregate.
- Improve airtightness and water resistance, and RDPpowder forms a film on the capillary wall and micro-cracks.
- Improve workability.
| Item | Parameter | ||||
| RDP-820 | RDP-817 | RDP-834 | RDP-715 | RDP-810 | |
| Appearance | White or light yellow powder，free-flowing | ||||
| Solid Content | ≥98.0% | ≥98.0% | ≥98.0% | ≥98.0% | ≥98.0% |
| Fineness (150μm sieve residue)/% | ≤ 10 | ≤ 10 | ≤ 10 | ≤ 10 | ≤ 10 |
| Bulk Density (g/l) | 500−600 | 500−600 | 500−600 | 500−600 | 500−600 |
| PH Value | 6.0-8.0 | 6.0-8.0 | 6.0-8.0 | 6.0-8.0 | 6.0-8.0 |
| Minimum film-forming
Temperature (℃) |
0 | 2 | 0 | 4 | 0 |
| Tg (℃) | 2 | 16 | -7 | 18 | 5 |
Performance of Redispersible Polymer Powder in dry mortar:
- Improve the adhesion between dry mortar and various substrates, and ensure the weather resistance of the mortar’s bond strength under various conditions of use. For example, improve the bonding strength between EPS boards, EPS particles, concrete walls and brick walls in thermal insulation mortar;
- Reduce the elastic modulus of the material and improve the elasticity and flexibility of the material. The material can withstand certain base material deformation, external force impact, temperature difference deformation, freeze-thaw deformation. For example, redispersible polymer powder can significantly improve the dynamic crack resistance of putty and heat aging resistance of tile adhesive, and the impact resistance of EPS board insulation system;
- Redispersible polymer powder can reduce the water absorption rate of the material, and the effect of special hydrophobic latex powder is more obvious. Reduce moisture and moisture damage to molding mortar;
- Certain types of redispersible polymer powders can improve the settlement resistance and fluidity of the mortar, thereby improving the construction performance of the mortar.
