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The thermal insulation board supporting mortar is an important part of the external wall insulation, mainly the thermal insulation board adhesive and protective mortar. As a supporting material for the system, the components of the external insulation system must be regarded as a whole.

Applying RDP into mortar is actually the modification of ordinary mortar, also known as polymer modified cement mortar. Through polymer modification, the brittleness, high elastic modulus and other weaknesses of traditional cement mortar are improved;

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.