Redispersible polymer powder is a green, environmentally friendly, building energy-saving, high-quality multi-purpose powder building material, which is an essential and important functional additives for dry mix mortar. It can improve the performance of mortar, increase the strength of mortar, increase the bonding strength between mortar and various substrates, improve the flexibility and workability, compressive strength, flexural strength, wear resistance, toughness, and viscosity of mortar. Relay and water retention capacity, constructability. The performance of redispersible polymer powder is relatively strong, with high bonding ability and unique properties. Therefore, their range of application is extremely wide. Hydroxypropyl methyl cellulose plays the role of water retention, thickening and construction performance in the early stage, redispersible polymer powder plays the role of strength in the later stage, which plays a very good role in the firmness, acid and alkali resistance of the project. The effect of redispersible polymer powder on fresh mortar: prolong the working time and adjustable time to improve water retention performance to ensure the hydration of cement, improve sag resistance, improve workability, and the effect on hardened mortar and various substrates. It has good adhesion, including concrete, plaster, wood, and old tiles, also has good deformation ability under various climatic conditions.

The addition of redispersible polymer powder has a very obvious effect on the improvement of the performance of cement-based tile adhesives, has a significant effect on the bonding strength, water resistance, aging resistance of the adhesive. At present, there are many types of redispersible polymer powders on the market, such as acrylic redispersible polymer powders, styrene-acrylic powders, vinyl acetate-ethylene copolymers and etc. Generally speaking, most of redispersible polymer powder used in tile adhesive on the market are vinyl acetate-ethylene copolymers.

Due to its good decorative and functional features such as durability, water resistance and easy cleaning, ceramic tiles are widely used: walls, floors, ceilings, swimming pools and etc., and also can be used indoors and outdoors. The traditional pasting method of tiles is the thick-layer construction method, first apply ordinary mortar to the back of the tiles, and then press the tiles to the base layer. The thickness of the mortar layer is about 10 to 30mm. Although this method is very suitable for construction on uneven bases, the disadvantages are low efficiency of tiling tiles, high requirements for workers' technical proficiency, increased risk of falling off due to poor flexibility of mortar, and difficulty in correcting mortar on the construction site. Quality is strictly controlled. This method is only suitable for tiles with high water absorption rate. Before pasting the tiles, the tiles need to be soaked in water to achieve sufficient bond strength.

The tiling method currently used in Europe is the thin-layer sticking method, the polymer-modified tile adhesive batch is scraped on the surface of the base layer to be tiled in advance with a toothed spatula to form a uniform thickness with raised stripes. Mortar layer, then press the tiles on top of it and twist slightly, the thickness of the mortar layer is about 2 to 4mm. Due to the modification of cellulose ether and redispersible polymer powder, the use of this tile adhesive has good bonding performance to different types of base layers and surface layers including fully vitrified tiles with extremely low water absorption, and has good flexibility, so as to absorb the stress caused by factors such as temperature difference, good anti-sag, long enough open time for thin layer construction can greatly speed up the construction speed, easy to operate and no need to pre-wet the tiles in water. This construction method is easy to operate and carry out on-site construction quality control.