Emulsions are composed of polymer particle spheres rather than separate polymer molecules, so plasticizer drying into a film must involve the fusion between these larger particles. This process can be divided into several steps: the plasticizer begins to shrink due to the evaporation of moisture, and the overall volume of the coating shrinks, and the plasticizers are close to each other.
In order to achieve direct contact between the particles, the plasticizer must first overcome the electrostatic repulsion between the particles, and the electrostatic repulsion of the plasticizer is the force that originally maintained the stability of the dispersion. Therefore, people have to according to the molding temperature Tp according to the map, find the corresponding monomer for synthesis, or add the external plasticizer, so that Tp â‰¥ MFFT
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