INTERNAL VOLTAGE IN FURAL COMPOSITES AND THEIR RELAXATION WAYS

Summary. Aim. Investigation of the stress distribution in furan composites and the methods of their relaxation. Methodology. Introduction of the synthamide leads to the development of supramolecular structures, which results in a significant decrease of internal stresses in the polymer solution and enhances the adhesion and the tensile strength of the filled composition. Results. We determine the influence of the main structure-forming factors (i.e., the ratio p/o, the coefficient of the grain expansion of a large aggregate (δ), the thickness of the polymer-bonding layer (g)) on the strength properties of the furan polymer concrete. Novelty. The influence of the type and of the volume fraction of surfactants on the strength of furan compounds is examined for different fillers having the extreme value when filled by the silica flour with the volume fraction 0.1-0.2%, by the wetting agents DB and OP-4 with the volume fraction 0.5 -0.75%. Practical impact. The velocity of the relaxation processes (correspondingly, the rate of processes of structuring) can be controlled by the introduction of surfactants in furan composites.