Respersible latex powder is a mixture of polymer emulsion by adding different additives, and the addition of protective colloid and anti-blocking agent causes the polymer to form a free flow powder in water that can be redispersed after spray drying.
Can disperse latex powder is distributed in the evenly mixed dry mortar, mortar after water mixing polymer powder dispersed into the new slurry and emulsified again: due to the hydration of cement, surface evaporation and / or base absorption of the mortar pores free water consumption, and the strong alkaline environment provided by cement, make the latex particles drying in the mortar form water insoluble continuous film, the continuous film is formed by a single dispersed particles in the emulsion into the homogenization.It is the existence of these latex films distributed in the polymer modified mortar that makes the polymer modified mortar obtain the characteristics that the rigid cement mortar cannot have:
Because the latex membrane has a self-stretching mechanism, it can be applied as a tensile force to the base or mortar anchor. At the interface between the polymer modified mortar and the base, this effect can improve the bonding performance of the mortar and different bases, such as the bonding force of special bases such as high mass density tiles and polystyrene plate:
On the inside of the mortar, such an action can maintain it as a whole, in other words, the cohesion strength of the mortar is increased.With the increase of the amount of redispersing adhesive powder, the bonding strength of mortar and concrete base is also significantly improved.