Investigation of influence of fillers and modifiers on damping properties of pva-based material
Abstract
Investigation of influence of fillers and modifiers on damping properties of pva-based material
Incoming article date: 28.11.2019The modern world is impossible to imagine without means of technical movement, broad mechanization and automation of production processes. Mechanisms exude harmful noises and vibrations that adversely affect the human body. Many materials have been created that absorb harmful noises and vibrations. Vibrating materials are widely used in everyday life. They are applied to the parts of cars, hulltrains of trains and aircraft from the inside. Anti-corrosion coating helps to protect the bottom of the car and train. It can serve as another level of protection against noise and vibration. At the heart of the vibrating material, as in the anti-corrosion coating, is a viscous layer, which, in turn, is modified by the introduction of fillers and plasticizers. The difference between vibrating material and anti-corrosion material is that for a greater increase in its vibrating properties, the material is sometimes reinforced. The article presents the results of studies of the mastmaterial material with such fillings as mica ground flogopit SMF-123, calcium formiat, melflux 1641F, melflux 4930F, melflux 6681F. A steel plate with a mast material applied to it has been selected as the object of the study. The matrix material was based on polyninilacetate, which injected epoxy resin and dibutylphthalate. The loss factor of the material was determined by a resonant method, the essence of which is to excite the sample of cross-range oscillations. Developed vibrating mastics, selected effective fillers and plasticizer for it. The dependence of vibrating properties on the amount of epoxy resin injected, plasticizer and the influence of thickness of layers is represented.
Keywords: polyvinyl acetate, epoxy resin, vibration-absorbing mastic material, damping, loss coefficient