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Modifications of polymer composites are one of the fastest developing fields
of technology. Research is focused on two directions: obtaining new composites or modifying
existing materials. The first group of tests uses methods for preparing new chemical formulas
of polymers containing, as the main structural element: carbon (organic polymers) or silicon
(inorganic polymers). In the second group, the research consists in seeking methods to modify
the properties of polymers. In building construction, among the others types, the glues (adhe
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sive polymers) are used. They are exerted to connect materials with different physical and
mechanical properties. Under the influence of the factor initiating the crosslinking reaction
(hardener or temperature), the polymers obtain a solid form. The strength of the glued joint
depends on the initial parameters of the glue resin and the target substrate of its application.
The glued surface is usually the weakest element in this connection in terms of the possibility
of damage due to the effects of loads, therefore methods to improve the strength parameters
of adhesives are sought.
The study presents the results of own research on methods of modification of a selected
epoxy resin used in the technique as a glue. In order to ensure effective mixing of the adhesive
with the fillers, ultrasound energy was used. After the resin had hardened, tests were carried
out to determine the hardness and tensile strength of the obtained composites. Based on the
results, SEM analysis and observation of the effect of ultrasound, the phenomena affecting
the changes in the above mechanical properties were explained.
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