Views: 0 Author: Site Editor Publish Time: 2026-01-13 Origin: Site
HPMC/RDP are our best-selling products, offering low prices and high quality. HPMC powder can be used as a water-retaining agent in tile adhesives, and RDP can be used as a thickening agent in tile adhesives. Shijiazhuang Cellulose Co., Ltd. is a cellulose manufacturer from China and can provide you with a sufficient supply of these products.
Redispersible polymer powderimproves the consistency and workability of the mixture in the wet state. Due to the characteristics of the polymer, it significantly improves the cohesion of the wet mixture, contributing greatly to its workability. After drying, it provides adhesion to smooth, dense surfaces and improves the interaction at the aggregate and pore interfaces. With sufficient addition, it can form a film at the interface, giving the tile adhesive a certain degree of flexibility, reducing the elastic modulus, and significantly absorbing thermal deformation stress. Even after subsequent water immersion, it maintains water resistance and buffers against stresses caused by temperature changes and inconsistent material deformation, thus improving weather resistance.
Hydroxypropyl methylcellulose (HPMC) provides excellent water retention and workability to fresh mortar, playing a crucial role in wetting the surface. It prevents excessive water absorption by the substrate and evaporation of water from the surface layer, ensuring the smooth progress of the hydration reaction. Its air-entraining properties reduce the density of the tile adhesive, saving material and lowering the elastic modulus of the hardened mortar.
Redispersible polymer powder for tile adhesive is a green, environmentally friendly, energy-efficient, and high-quality multi-purpose powder building material, and an indispensable functional additive for dry-mix mortars. It improves the performance of mortar, increasing its strength, enhancing the bonding strength between the mortar and various substrates, and improving its flexibility, deformability, compressive strength, flexural strength, wear resistance, toughness, adhesion, water retention, and workability. Redispersible polymer powder for tile adhesive has powerful performance, possessing high bonding capacity and unique properties. Therefore, its application range is extremely wide. Hydroxypropyl methylcellulose provides initial water retention, thickening, and improved workability, while the redispersible polymer powder provides later-stage strength, contributing significantly to the durability, acid resistance, and alkali resistance of the project. The effects of redispersible polymer powder for tile adhesive on fresh mortar include: extending working time and adjustment time, improving water retention to ensure cement hydration, improving sag resistance (special modified polymer powder), and improving workability (easy application on substrates and easy pressing of tiles into the adhesive). Its effects on hardened mortar include excellent adhesion to various substrates, including concrete, plaster, wood, old tiles, and PVC, and good deformation capacity under various climatic conditions.
The addition of redispersible latex powder to cement-based tile adhesives significantly improves their performance, notably enhancing their bonding strength, water resistance, and aging resistance. Currently, there are many types of redispersible latex powders for tile adhesives on the market, such as acrylic redispersible latex powder, styrene-butadiene rubber powder, and vinyl acetate-ethylene copolymer. Generally, vinyl acetate-ethylene copolymer is the most commonly used redispersible latex powder in tile adhesives on the market.
(1) As the cement content increases, the initial strength of the tile adhesive with redispersible latex powder increases. Simultaneously, the tensile adhesive strength after water immersion and after heat aging also increases.
(2) As the amount of redispersible latex powder increases, the tensile bonding strength after water immersion and after heat aging also increases, but the increase in tensile bonding strength after heat aging is more significant.
Due to their excellent decorative and functional properties, such as durability, water resistance, and ease of cleaning, tiles are widely used in various applications, including walls, floors, ceilings, and swimming pools, both indoors and outdoors. The traditional method of tile installation is the thick-bed method, which involves applying ordinary mortar to the back of the tile and then pressing the tile onto the substrate. The mortar layer is approximately 10 to 30 mm thick. Although this method is suitable for uneven substrates, its disadvantages include low efficiency, high demands on worker skill, increased risk of detachment due to the poor flexibility of the mortar, and difficulty in strictly controlling the quality of the mortar on-site. This method is only suitable for high-water-absorption tiles, and the tiles need to be soaked in water before installation to achieve sufficient bonding strength.
