- August 9, 2021
- Posted by: admin
- Category: News
Redispersible latex powder improves tensile resistance
Redispersible latex powders have high bonding ability and unique properties, such as: water resistance, construction and heat insulation, etc. Therefore, their application range is extremely wide. Uses of redispersible latex powder:
1. Tile adhesive.
2. Bonding mortar for external thermal insulation system.
3. Plastering mortar for external thermal insulation system.
4. Tile grout.
5. Artesian cement mortar.
6. Flexible putty for internal and external walls.
7. Flexible anti-cracking mortar.
8. Rubber powder polystyrene particle thermal insulation mortar.
The promotion and application of redispersible latex powder has greatly improved the performance of traditional building materials, and greatly improved the adhesion, cohesion, flexural strength, impact resistance, abrasion resistance, durability, etc. of building materials products. With its excellent quality and high-tech content, building materials products ensure the quality of construction projects. The redispersible latex powder product is a water-soluble redispersible powder, a copolymer of ethylene and vinyl acetate, and polyvinyl alcohol as a protective colloid. The overall waterproof effect of the mortar made by adding silane powder to the redispersible latex powder is not very satisfactory. It’s better. The most ideal method is to add silane or water-repellent molecules in the emulsion. For example, vinyl laurate, vinyl chloride acrylic molecules and vinyl acetate can be copolymerized to synthesize emulsion, and then sprayed into powder. That way, the water repellency will be very good, and some manufacturers add such branched polymers, and their water repellency is not very good. At present, water-repellent mortars are mainly used for thin plastering mortar. The principle of redispersible latex powder in the mortar is to use the dual reactivity of Y-Si-OR3 to combine completely dissimilar organic and Inorganic materials are bridged by chemical bonds, thereby effectively improving the wettability, adhesion, and redispersibility of cement mortar to organic materials such as EPS boards and XPS. At the same time, it also improves the dispersibility of cement mortar. The redispersible latex powder makes the cement hydration reaction more complete and the cement coagulates more densely. Because this chemical bond connection can still maintain high strength even in high humidity environments, the water resistance of cement mortar, including cement mortar and EPS, XPS board bonding water resistance and cement modified by redispersible latex powder Compared with mortar, there is a significant improvement.