How to change the silicone formula to adjust the matte degree?
Change the silicone formula:
Polymer matrix: Choose silicone polymers of different types and molecular weights as the matrix. Generally speaking, polymers with larger molecular weights form a relatively tighter structure after curing, which may have a certain impact on the matte effect. Some silicone polymers with special structures have low gloss by themselves, and their use can control the matte effect to a certain extent.
Cross-linking agent: adjust the type and amount of cross-linking agent. The role of the cross-linking agent is to cause cross-linking reactions between silicone molecules to form a network structure. The reactivity and degree of cross-linking of different cross-linking agents are different, which will affect the microstructure and surface properties of the silicone after curing. Increasing the amount of cross-linking agent may increase the cross-linking density of the silicone, resulting in a denser surface, which will affect the light reflection and change the degree of matte.
Additives: Add some special additives, such as surfactants and leveling agents. These additives can affect the leveling and surface tension of the silicone during the printing process, and then affect the surface flatness and gloss after curing. Suitable additives can make the silicone surface more uniform, avoid local gloss differences, and help better control the matte effect.