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Redispersible Polymer Powder (RDP) is a multifunctional polymer additive widely used in modern dry-mix mortar systems. Through its exceptional redispersion ability, film-forming behavior, flexibility enhancement, and bonding improvement, RDP has become indispensable in tile adhesives, wall putty, ETICS mortars, repair compounds, and self-leveling flooring systems. This article provides a technical overview of RDP’s functional mechanisms and its contribution to high-performance construction materials.
In modern construction, movement in structures and materials—whether due to thermal expansion/contraction, wind vibration, or foundation settlement—is inevitable and poses a cracking risk to traditional rigid mortars and concrete. To achieve long-term stability and crack resistance in finishing systems, materials must possess "flexibility." Redispersible Polymer Powder (RDP), especially the RDP based on polymers like VAE, is the critical polymer additive that provides dry-mix mortars with this essential high flexibility and crack resistance.