How is the dosage of redispersible latex powder calculated?
Redispersible latex powder is a product governed by the theory of film formation. Within this theoretical framework, there exists a concept known as the “Minimum Film Formation Level.” This term refers to the minimum content of the pure film-forming substance required to achieve film formation. This value is approximately 2%; in other words, for a redispersible latex powder of 100% purity, an addition rate of 20 kg per ton is required to form a continuous film.
Since different products require distinct performance characteristics, requirements often extend beyond the basic principles of film formation alone. For instance, in the case of putty products, in addition to forming a complete film, the material must also possess sufficient thickness to exhibit the desired degree of flexibility. Consequently, the required dosage must exceed 20 kg per ton; as the demands for specific performance characteristics increase, the corresponding addition rate rises accordingly.
