THEORETICAL FOUNDATION FOR THE TECHNIQUES TO DETERMINE VISCOSITY OF PAINT AND VARNISH MATERIALS WITHOUT TIME-FACTOR ACCOUNTED

The work provides theoretical foundation for determining the conditional viscosity of paint and varnish materials as well as other Newton liquids without time-factor accounted. Conditional viscosity determined with the technique proposed depends on the amount of liquid forced out into the measuring capillary of a viscometer. There are two viscometer constructs presented determining conditional viscosity with the technique. The device to measure viscosity allows to determine conditional viscosity of a liquid medium due to the fact that the liquid medium of a certain volume to examine is placed in a principle vessel connected with the measuring vessel through the system of pipes with free outlets. The conditional viscosity of the liquid medium examined is determined by the amount of the liquid forced out into the measuring vessel. The viscometer, that has a spring as a working element, cylinder capacity, measuring capillary, valve, piston rod and the piston, allows to determine conditional viscosity of the liquid examined for its amount forced out into the measuring capillary by the expense of the vacuum created by the piston exposed to the spring. The designed devices shall allow to increase the accuracies of measurements as well as the quality of materials preparation and works performed.

вязкость, адгезия, вискозиметр, лакокрасочный материал, ньютоновская жидкость, лакокрасочное покрытие, качество, viscosity, adhesion, viscometer, paint and varnish material, Newton liquid, paint and varnish coating, quality

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