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After dry-mixed mortar added with redispersible polymer powder is mixed with water, the modification of redispersible polymer powder on cement mortar is accomplished by redispersion of powder, hydration of cement and film formation of polymer.

The redispersible powder is a special water-based emulsion made by spray drying and a polymer binder prepared mainly based on the vinyl acetate-ethylene copolymer. After partial evaporation of water, polymer particles form a layer of polymer film by agglomeration and play the role of adhesive

RDP/VAE, redispersible polymer powder. It is made of vinyl acetate/ethylene copolymer emulsion (EVA emulsion) modified by adding water-soluble protective colloid (polyvinyl alcohol usually PVA), and then spray-dried. Using water as a medium, it can be re-formed into an emulsion with redispersible powder.

By spray-dying polymer emulsions, redispersible polymer powder (RDP) is created. The polymer emulsion is emulsified and distributed after being mixed with water in the mortar, and it becomes more stable. When the RDP is emulsified and distributed in water,

1. Redispersible Polymer powder

The Redispersible Polymer Powder RDP is a special polymer powder made after spray drying.

Building energy consumption is a major consumer of energy. In the building maintenance structure, the exterior wall of the building accounts for more than 15% of the total energy consumption of the maintenance structure. Therefore, external wall insulation has become the focus of building energy conservation. The External Wall Insulation System, hereinafter referred to as […]

Regarding the problem that putty powder is easy to powder, or the strength is not up to anything. It is known that cellulose ether needs to be added to make putty powder, and many users do not add redispersible latex powder.

The polymer film formed by Redispersible polymer powder has good flexibility. A film is formed in the gaps and surfaces of the cement mortar particles to form a flexible connection. So that the brittle and hard cement mortar becomes elastic. The mortar added with Redispersible polymer powder is several times higher in tensile and flexural resistance than ordinary mortar.

Redispersible Polymer Powder/Vae for Wall Putty Mortar VAE RDP is a polymer powder with multipurpose, widely used in joint filler mortar , wall putty/wall skim coat and binder as a film forming agent, which is designed to improve the workability, adhesion, flexibility, anti-permeability of construction dry mixed mortar.