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Extend the work time and improve water retention performance to ensure the hydration of cement and improve workability;

The glass-transition temperature refers to the temperature at which polymers will be converted from an elastic state to a glassy state, expressed by Tg. When the temperature is higher than Tg, the material is rubber-like in behavior and generates the elastic deformation under load;

The minimum film-forming temperature refers to the minimum temperature at which polymers form a continuous film, expressed by MFT. If the cement hydration temperature is below this value, the energy supplied will not be enough to start film formation.

The roles that redispersible polymer powder plays in mortar can be considered as follows. First, after water added into mortar, the powder particles will get dispersed in water and quickly form a film under the action of hydrophilic protective colloid and mechanical shear force

After redispersible polymer powder is added into cement mortar, the tensile strength and flexural strength of mortar will be significantly improved, while the compressive strength won’t get significantly improved, even declined.

It has good water retention. Tiles do not need soaking treatment before pasting, can be used in construction for a longer time and smeared in large area; it has good adhesion effects, strong vertical flow resistance, and the construction can be from top to bottom.

Cement-based tile adhesive is the largest application of the current special dry-mixed mortar. It is a kind of organic or inorganic admixture with cement as the main cementing material and supplemented with grading aggregate, water retention agent,

Wall putty is a kind of decorative materials to make wall surface smooth, it can be used in exterior and interior wall decoration. HPMC plays an essential role in wall putty(skim coat) to improve the key properties like water retention, open time, crack resistance, workability, etc.

HPMC for putty powder is thickening agent and water-retaining agent. It also makes the construction more easier.