What Are Redispersible Polymer Powders (RDP)

Redispersible polymer powders are freely flowing white powders that are produced by spray drying dispersions of polymer. When they are added to water, these powders of polymer can break apart and create individual polymer dispersions with similar properties to the dispersions that were originally created.

The redispersible polymer powders can be added into mortar in order to enhance the flexibility and strength of mortar. It creates an unbroken polymer film which helps increase water retention, increase the strength of mortar's bonds and enhance the working ability of mortar made from dry mix.

RDP Production Process

The redispersible powder is an emulsion made of latex by spray drying macromolecular dispersions in specific conditions. In the process, polyvinyl alcohol is added to prevent the latex particles forming bonds. The polymer powders are typically produced using the acrylic polymers and polyvinyl alcohol or copolymers of acetate vinyl together with vinyl versatate or ethylene.RDPs are made up of polymer resins, which is the most important ingredient in dispersion powders and are a crucial component for the function of redispersible powders. As additives they function as modified resins as well as polymer resin.

Properties of Redispersible Polymer Powders

When water is added the dry mix mortar the polymer powder transforms into dispersion, and then forms the form of a film when it is dried. This film improves flexibility and adhesion. The polymer powders that redispersible can be classified as high-elasticity with low adhesion and rigid with high adhesion and medium elastic with a standard adhesion. Some powders contain water. powders to give hydrophobic properties to the substance.

• vinyl acetate-ethylene Polymers (VAE) These powders combine an ethylene's flexibility with the adhesive properties of vinyl acetate providing a variety of eco-friendly and economic benefits without altering the performance.
  They provide a variety of benefits they provide, such as excellent cohesion, flexibleness, excellent low-temperature films and variable glass transition temperatures. They also have excellent adhesion to particular substrates, such as wood and plastics.

• Vinyl Chloride Copolymers as well as Terpolymers These powders of polymer exhibit excellent water resistance, superior hydrophobicity, as well as excellent adhesion to tensile.

• Terpolymers that are based on VEOVA and VAcE These powders feature very low temperatures for transition. The advantages of the use of polymer powders based upon VEOVA and VAcE are good performance, low-slump as well as a strong tensile adhesion as well as excellent crack-bridging properties with low stickiness.

Applications

Redispersible polymer powders are used in a myriad of applications in various industries. They are extensively used in:

• Construction adhesives

• Tile adhesives

• Joint mortars

• External wall putty

• Binders for construction

• Compositions that fill in the gaps like crack isolation membranes and membranes that waterproof.

Interested in RDP Powders Products? Contact JTDF

JTDF offers a wide range of RDP polymer products that aid in improving abrasion resistance, gas migration, flexural strength and workability properties of the mortar mix. These powders can be easily dissolvable in water and can form solid Emulsions.

Send us a message online to get more information about the specifications as well as packaging, grades and the applications for polymer powders. Our staff will help you identify the right RDP powder that is suitable for your requirements.

Name: Arlo.Hu

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

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