What Are Redispersible Polymer Powders?

Redispersible polymer powders can be defined as emulsions that have undergone various transformations, including high temperatures and pressures, spray drying, surface treatment and thermoplastic resin powdered. When mixed with water, organic biners found within these organic powders redisperse into copolymer emulsions with identical characteristics to their original forms.

Polymer redispersible powders added to mortar could boost its cohesion, strength, and elasticity. First off, this add-in increases water retention and creates a protective film over its surface that keeps excess liquid at bay - increasing both its retention capabilities as well as bond strength.

Wacker Hemie of Germany invented redispersible polymers in 1953, making polymer-modified dry-mix mortar possible. Since 1953 when their first redispersible powder batch was created in Germany; subsequent innovation and refinements have resulted in various outcomes and combinations with other applications produced by Wacker Hemie.

Vinyl homopolymerized with acetate has become the first redispersible dispersible polymer powder. This type of powder should only be used in non-alkaline environments, as its esters or polymers containing ester bonds may react quickly with alkaline conditions to form acid salts or free alcohols, altering performance from non-watersoluble to water soluble rapidly. Due to rising glass transition temperatures, which tend to result in decreased flexibility as well as other negative consequences, this trend may present itself with various consequences for various reasons. In 1960, EVA copolymer was successfully produced using ethylene as an organic monomer to achieve internal plasticization of redispersible polymer powder and increase plasticity substantially - suitable for producing alkaline systems of Portland cement.

Name: Arlo.Hu

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

Mobile:+86 185 6012 8196（Whatsapp）