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VAE Re dispersible Polymer Powder is a water-soluble redispersible powder that is a copolymer of ethylene and vinyl acetate, using polyvinyl alcohol as a protective colloid.
Chemspec Europe 2023 With a highly specialised profile, Chemspec Europe is a key event for the fine and speciality chemicals industry.
The function of VAE Re-dispersible Polymer Powder and moisture-proof measures What are the functions of VAE Re-dispersible Polymer Powder in wet mortar? 1. In the process of construction, it can improve the construction performance and improve the fluidity of mortar; 2.VAE Re-dispersible Polymer Powder can enhance the cohesion between wet mortar and effectively change the duration; 3. 3. In wet mortar, it can enhance water retention and increase sag resistance.
VAE Re-dispersible Polymer Powder formed polymer film has good flexibility. The film is formed on the gap and surface of cement mortar particles to form a flexible connection. Thus, the brittle cement mortar becomes elastic. Mortar with redispersible emulsion powder is several times higher in tensile resistance than ordinary mortar.
Hydroxypropyl methyl cellulose, is a nonionic cellulose mixed ether. It is a semi-synthetic, inactive, viscoelastic polymer commonly used as a lubricant in ophthalmology, or as an excipient or excipient in oral medicine.
VAE Re-dispersible Polymer Powder to improve the adhesion and mechanical properties of putty.
1. VAE Re dispersible Polymer Powder is a water-soluble redispersible powder, which can be divided into ethylene/vinyl acetate copolymer, vinyl acetate/ethylene tert carbonate copolymer, acrylic acid copolymer, etc. The powder adhesive made by spray drying uses polyvinyl alcohol as a protective adhesive.
High-quality HPMC can be evenly and effectively dispersed in cement mortar and gypsum based products, and wrap all solid particles, and form a layer of wetting film. The moisture in the base is gradually released over a long period of time, and hydrates with inorganic cementitious materials, thus ensuring the bonding strength and compressive strength of the materials. Therefore, in high temperature summer construction, in order to achieve the water retention effect, it is necessary to add enough high-quality HPMC products according to the formula, otherwise, quality problems such as insufficient hydration, strength reduction, cracking, hollowing and falling off caused by drying too fast will occur, and the construction difficulty of workers will also be increased. As the temperature decreases, the amount of HPMC can be gradually reduced, and the same water retention effect can be achieved.
Cold water instant HPMC can be used for putty powder, mortar, liquid glue, liquid paint and daily chemical products. Hot melt HPMC is usually used in dry powder products and directly mixed with dry powder for uniform application, such as putty powder and mortar. Hydroxypropyl methyl cellulose can be widely used to improve the performance of cement, gypsum and other hydrate building materials. In cement-based mortar, it can improve water retention, extend correction time and opening time, and reduce flow suspension.