Selection and application for redispersible polymer particles (RDP)

The redispersible powder (RDP) is a fluid powder that is derived from emulsions of latex. When it is added to cementitious or gypsum-based blends and then when mixed in water, the mixture re-disperses into polymers, which creates an elastic film that enhances the quality of the product. Today, redispersible polymer powders have become a crucial component in many construction processes.

Common uses for polymer redispersible powders

Tile Adhesives

Through the addition of redispersible powders to cement-based adhesives that often fail to offer sufficient bonding strength, producers are able to create products that have excellent adhesion and flexibility, as well as water resistance. The polymer film that is formed towards the finish of redispersible polymer powder can help connect micro-cracks within the substrate, decreasing the possibility of tiles breaking off with time and better able to adapt to the movement of the substrate and extend the lifespan of the tile's surface, while keeping water from damaging the structure underneath.

Self-leveling compounds

Redispersible polymer powders improve the flow characteristics of self-leveling materials, allowing to make them easier for you to use, give an even finish on the surface and increase the bonding of self-leveling mortar to substrate, decreasing the chance of cracking later on at the later point. The flexibility of redispersible polymer powder allows the self-leveling mortar adapt to minor variations in the substrate's surface and prevents the development of cracks.

System for exterior insulation (EIFS)

The addition of redispersible polymer powders into the foundation coats of EIFS increases its overall flexibility as well as resistance to cracks to withstand the strains created by thermal contraction and expansion. Primer coatings that are modified using redispersible polymer particles have improved impact resistance, helping to shield your thermal insulation from being damaged and enhances the durability that the insulation system has.

Membranes for waterproofing made of cementitious

Membranes for waterproofing are used to shield structures like roofs, foundations, and basements against water intrusion. The inclusion of redispersible polymer particles into the membrane formulation creates an item with exceptional flexibility, crack bridging capacity and adhesion to substrate. The membrane of polymer formed in the cementitious matrix assists in sealing micro-cracks and offers excellent waterproofing properties.

Repair mortars

Polymer powders that are redispersible enhance the bonding of the repair mortar to the concrete substrate. It also increases the flexibility and flexibility of mortar which allows it to better adapt to variations in the movement of repairs and existing concrete, decreasing the possibility of cracking or delamination.

What should you look for when choosing redispersible polymer powders

Temperature of glass transition

A lower temperature for glass's transition the more flexible and the less bond and vice versa.

Minimum Film Formation Temperature

The lower the film's minimum creation temperature, the greater the resistance to weathering and frost and vice versa.

Viscosity

Dry mortars with the exception of self-leveling cement that has particular requirements for viscosity, other requirements are not too high. If it's to be used in a self-leveling method, it is best to use a redispersible with low viscosity. polymer powder.

Anti-caking agent

The use of anti-caking agents could significantly affect the bonding strength. This should be checked for bonding strength prior to purchase.

The redispersible polymer powder is extensively utilized for construction purposes. In the real world, various modifications can enable the redispersible polymer to have distinct properties like resistant to alkalis, water marble resistance, and flexibility. If you have any questions regarding the application of redispersible polymer powders you can check with JTDF.

Name: Arlo.Hu

E-Mail:arlo.hu@jtdf-rdp.com

Mobile:+86 185 6012 8196（Whatsapp）