EipponCell HPMC YB 520M is a valuable additive for cement-based plaster applications, offering the following properties: Effective distribution: When HPMC is dissolved in water, it exhibits surface activity, ensuring a uniform distribution of cementing material in the mortar system. Acting as a protective colloid, the HPMC envelops solid particles, forming a layer on their outer surface.. This layer acts as a lubricating film, enhancing mortar stability, improving fluidity during mixing, and facilitating smooth construction. Water Retention: Due to its unique molecular structure, the HPMC solution helps retain water in the mortar, gradually releasing it over an extended period of time.. This feature imparts excellent water retention properties to the mortar, preventing rapid water loss from the mixture to the substrate.. The retained water remains on the surface of the fresh material, promoting cement hydration and ultimately enhancing the final strength of the plaster. Stability and compatibility: HPMC demonstrated stability to both acid and alkali environments.. Its aqueous solution remains highly stable in the pH range from 2 to 12.. While caustic soda and lime water have minimal effect on its properties, alkalis can expedite its dissolution and slightly increase its viscosity. Improved Construction Performance: The addition of HPMC significantly enhances the construction performance of mortars.. The resulting mortar exhibits a lubricating effect, often described as "oily," which facilitates full filling of wall joints, smoothens the surface, and promotes strong bonding between tiles or bricks and the base layer. In addition, the presence of the HPMC prolongs the operation time, making it particularly suitable for large-scale construction projects.
