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In order to check the possibility of using the powder aerogel as an additive to the matrix of the
polymer composite, experimental tests of the material strength (static tensile and bend test) of the
composite as well as tests of tribological properties and Shore D hardness depending on the amount
of the dispersed phase in the form of powder aerogel were carried out. In order to perform the tests,
were prepared samples divided into twenty series, differing in the percentage of the amount of aerogel
addition (0-6%) and the temperature of cross-linking of the composite before the test (20, 55, 80 and
100° C). The L285 MGS aviation resin with the H285 MGS hardener was selected as the matrix of the
tested composites. The conducted experimental tests allowed to determine the effect of the amount of
powder additive and the cross-linking temperature on the properties of the composite. Based on the
study, it can be concluded that the use of an aerogel additive deteriorated the mechanical properties of
the composite in relation to the base material (without the additive). The tensile and bending strength
of the material decreased by about 60% (for the 6% additive). Young’s modulus in tensile decreased by
about 20% and in bending by about 25%. No effect of increasing the amount of additive on hardness
was observed, but only the influence of the cross-linking temperature (higher hardness for temperatures
of 80 and 100 °C). A uniform decrease in mass was noted during the abrasion tests, only samples that
were cross-linked at elevated temperature showed reduced wear. As a result of adding aerogel, the
structure of the composite changes. A material with slightly reduced strength properties is obtained,
but with additional properties that will be the subject of further research by the authors. The composite
with the addition of aerogel also benefits from the reduced density, which is very important when using
such a material in aircraft construction.
