VINNAPAS® 224 HD
VINNAPAS® 224 HD is a multi-purpose construction dispersion for liquid and paste, cement-free binder technology, specifically suited for primers, ready-to-use tile adhesives and one-component dispersion-based water-proofing membranes. It is based on a hard copolymer of styrene and acrylate and belongs to the product class VINNAPAS® HD which means that it provides a remarkable hydrophobic effect in addition to the excellent adhesion even under wet conditions.
- VINNAPAS® 224 HD is a fine-particle dispersion of a special styrene/acrylate copolymer.
- VINNAPAS® 224 HD has excellent pigment-binding capacity and very good adhesion to inorganic substrates.
- VINNAPAS® 224 HD is ideal for manufacturing construction and tile adhesive paste with extremely good wet adhesion properties.
- VINNAPAS® 224 HD is also used as a binder for roofing compounds, high-quality synthetic-resin and silicone-resin plasters, and as a primer for flooring compounds.
VINNAPAS® 224 HD的特殊性能
VINNAPAS® 224 HD has excellent shear stability at pH values above 7.5 and is therefore easy to process. The dispersion is readily compatible with conventional fillers and pigments. The only exceptions are platelet pigments, such as kaolin, which raise the viscosity of the batch. The correct type and amount of wetting agent can be easily determined by storage stability tests of the pigmented batch at elevated temperatures in a drying cabinet at 50 °C. Film-forming aids: VINNAPAS® 224 HD already contains small amounts of 2,2 ,4-Trimethyl-1,3-pentanediol monoisobutyrate and forms a film at temperatures above 12°C. If a lower film-forming temperature is desired, additional film-forming agents must be used.
Films produced from this dispersion have excellent resistance to water and alkalis, with only slight water absorption and greatly delayed whitening. Plasters based on this dispersion therefore show very little tendency to soften under prolonged immersion in water. VINNAPAS® 224 HD is particularly recommended for producing ready-to-use construction adhesives, which have outstanding adhesion bond strength even when exposed to water. This improved wet adhesion is particularly useful for ceramic tiles adhesives (class D2 according to EN 12004).
For typical application fields of VINNAPAS® 224 HD, refer to the following application table. Please discuss additional applications with your WACKER customer representative.