ViskositätsindexVerbesserer

Viskositätsindexverbesserer (also known as VTI for short) refer to additives used in lubricating oils and other liquids to improve their viscosity index. The viscosity index is a measure of the change in viscosity of a fluid in response to changes in temperature.

The primary function of VTI additives is to reduce the rate of change in viscosity as temperature changes, thereby maintaining the fluid's consistency and lubricating properties under various operating conditions. This is particularly important in applications where the fluid is subject to wide temperature fluctuations, such as in automotive engines or industrial machinery.

Typically, VTI additives contain polymers or other high-molecular compounds that modify the fluid's rheological behavior. When added to a lubricating oil, they enhance its VI (viscosity index) by providing a more stable viscosity response to temperature changes.

The use of VTI additives has several benefits, including improved fuel efficiency, reduced wear and tear on moving parts, and extended oil change intervals. However, their effectiveness can be influenced by factors such as concentration, temperature range, and type of base oil. As a result, the addition of VTI additives requires careful formulation and testing to ensure optimal performance and compatibility with the base oil and other additives.

As technology continues to evolve, the development of new VTI additives and polymers is expected to further enhance the efficiency and performance of lubricating oils in various industrial and automotive applications.