Viscosity is the resistance that the molecules of a fluid encounter when flowing with respect to each other and is a fundamental parameter to keep under control in the oil sector and especially in the paint sector to obtain a good quality coating and to avoid defects . It depends on several factors such as the chemical and physical structure of the fluid, temperature and pressure.
When the viscosity is too high, dripping may occur and the covering effect of the paint may be lost, while if it is too high there is a risk of imperfections such as orange peels, bubbles and burns. For this reason it is essential to check the degree of viscosity of a paint before applying it, using a viscometer.
The viscometer can be capillary, for low viscosity fluids, rotational or Brookfield, the most widespread and usable for any type of fluid, and vibration, ideal for those who need to check high viscosity fluids.