Study of Physical and Mechanical Properties of Non-Polar Rubber-Based Sealants Depending on Filler Type and Volume

Abstract

Non-curing sealants have a complex composition consisting of a mixture of polymers, plasticizers, extenders, adhesive additives, various special purpose additives (pigments, biocides, fire-retardants), and therefore the optimization of their compositions to improve the physical and mechanical and technological characteristics is rather complicated. This article demonstrates the experimental results of physical and mechanical properties such as penetration, strength, density, adhesion to metal and concrete, water absorption, and elongation of sealants on the basis of butyl-rubber and EPDM, depending on filler type and volume. The basic regularities of the nature influence and fillers on the physical and mechanical and technological characteristics of sealants are revealed. We’ve identified the ultimate proportion of fillers when the sealants meet the required specifications. The research results are the recommendations on the selection and optimization of the filler content of the sealant composition.

Effect of Heavy Filler on Dynamic Mechanical Properties of Polymer Composites

“…Years of experience in dealing with noise and vibrations have shown that the most effective vibration-absorbing materials are polymer composite materials with dispersed fillers, which are capable of damping due to the peculiarities of their molecular and supramolecular structure [3][4][5].…”

“…As a rule, most fillers used in the manufacture of polymer composites have a density of up to 2.5 g/cm 3 . Fillers with a higher density can be considered heavy fillers.…”