Fillers are solid particles that are added to silicon fluids in order to modify their properties. These particles can improve the flow, viscosity, and other physical characteristics of the fluid, making it more suitable for specific applications.
Some commonly used fillers in silicon fluids include silica, fumed silica, and amorphous silica. Other types include carbon black, titanium dioxide, and calcium carbonate. These fillers can have different shapes, sizes, and surface properties, which can affect the final properties of the fluid.
Fillers can be added to silicon fluids during the manufacturing process by mixing them together. The fillers can also be added to the fluid after it has been produced, by using techniques such as mechanical mixing or ultrasonication. The method of addition can affect the dispersion and distribution of the fillers in the fluid.
Fillers can enhance the mechanical, thermal, and electrical properties of silicon fluids. They can also improve the stability, shelf life, and processability of the fluid. Additionally, using fillers can reduce the overall cost of the fluid, as they are typically less expensive than the silicon fluid itself.
While fillers can provide many benefits, there are also some concerns and limitations to consider. For example, certain fillers may react with the silicon fluid or other chemicals present, leading to potential compatibility issues. Additionally, the fillers may settle or agglomerate over time, affecting the homogeneity and performance of the fluid. It is important to carefully select and test fillers to ensure they are compatible and will not negatively impact the properties of the fluid.