The basic role of dispersible polymer powder in tile adhesive
1. Redispersible latex powder improves the compressive strength and flexural strength of tile adhesive.
2. The redispersible latex powder is dispersed to form a film and act as a second adhesive to play a reinforcing role.
3. The protective colloid is absorbed by the mortar system (it will not be destroyed by water after film formation, or “secondary dispersion”).
4. Film-forming polymer resin is distributed in the entire mortar system as a reinforcing material. Thereby increasing the cohesion of the mortar.
5. The addition of redispersible latex powder increases the elongation of the mortar, thereby improving the impact toughness of the mortar and also giving the mortar a good stress dispersion effect.
6. Dispersible polymer powder reduces the elastic modulus of mortar, improves deformation ability and reduces cracking phenomenon.
7. Redispersible latex powder improves the bonding performance of tile adhesive. The bonding mechanism is based on the adsorption and diffusion of macromolecules on the sticky surface. At the same time, the rubber powder has a certain degree of permeability, and fully infiltrates the surface of the base material together with hydroxypropyl methyl cellulose ether. Make the base layer close to the surface performance of the new plaster, thereby improving the adsorption and greatly increasing its performance.
8. Dispersible polymer powder improves the wear resistance of mortar. The improvement of wear resistance is mainly due to the presence of a certain amount of rubber on the surface of the mortar, and the rubber powder plays a bonding role. The mesh structure formed by the rubber powder can pass through the holes and cracks in the cement mortar. Improves the bond between the base material and cement hydration products, thereby increasing wear resistance.
9. Redispersible latex powder endows tile adhesive with excellent alkali resistance.
That’s all content about the basic role of dispersible polymer powder in tile adhesive.