viszkozitásindexnövelk

Viszkozitásindexnövelk is a Hungarian term that translates to "viscosity index improvers" in English. These substances are additives used in lubricants, such as engine oils and gear oils, to improve their viscosity index.

Viscosity index is a measure of the change in viscosity of a fluid with respect to temperature. Viscosity is the measure of a fluid's resistance to flow. High-temperature operation, such as in automotive engines, can cause lubricants to thin out and lose their lubricating properties. Viscosity index improvers help to reduce the rate of thinning, thus maintaining the lubricant's viscosity across a wide temperature range.

Viscosity index improvers typically work by introducing polymers or other macromolecules into the lubricant. These polymers can be chemically or physically cross-linked, allowing them to maintain their shape and structure even when subjected to high temperatures. This helps to maintain the lubricant's viscosity, ensuring that it remains effective over a wide range of operating conditions.

Common types of viscosity index improvers include polybutene succinimide, polyisobutylene succinimide, and styrene-butadiene polymer. These additives are commonly used in a wide range of applications, from automotive to industrial settings, to improve the performance and longevity of lubricants. By reducing the rate of thinning and maintaining viscosity, viscosity index improvers help to increase the fuel efficiency, prolong the life of engines, and prevent premature wear on equipment.