The advanges of HPMC & MHEC in dry mix mortar products
November 22nd 2024
VAE (Vinyl Acetate Ethylene) redispersible polymer powder is commonly used in Exterior Insulation and Finish Systems (EIFS) or External Thermal Insulation Composite Systems (ETICS). EIFS/ETICS is a type of exterior cladding system used to improve the energy efficiency, thermal performance, and aesthetics of buildings. VAE redispersible powder is utilized in EIFS/ETICS for various reasons:
1. Improved Adhesion: VAE redispersible powder enhances the adhesion of the EIFS/ETICS components, including the insulation board and the base coat, to the substrate (such as concrete or masonry walls). This helps ensure that the system remains securely attached over time, even under varying weather conditions.
2. Flexibility and Crack Resistance: The incorporation of VAE redispersible powder into the base coat or adhesive layer of EIFS/ETICS provides flexibility to the system. This flexibility allows the system to accommodate minor movements and thermal expansion and contraction without cracking, which is essential for the durability of the system.
3. Workability: VAE redispersible powder improves the workability of the base coat or adhesive mortar, making it easier for installers to apply and shape the material during the installation process. This contributes to achieving a smooth and uniform surface.
4. Water Resistance: VAE redispersible powder can enhance the water resistance of the EIFS/ETICS components, helping to prevent water infiltration and potential damage to the building envelope.
5. Durability and Weather Resistance: EIFS/ETICS systems are exposed to various environmental conditions, including UV radiation, temperature fluctuations, and moisture. The addition of VAE redispersible powder improves the overall durability and weather resistance of the system, contributing to its long-term performance and aesthetics.
6. Thermal Insulation: While VAE redispersible powder primarily contributes to the properties mentioned above, EIFS/ETICS systems as a whole are designed to provide thermal insulation benefits by adding a layer of insulation to the exterior of a building.
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