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Investigations of the specific heat capacity of selected heterogeneous materials

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Gałek R. , Wilk J.

Archives of Thermodynamics

2024

tom Vol. 45, no 2

91--98

This paper presents the results of experimental investigations of the basic thermal property – the specific heat capacity of selected heterogeneous materials – graphene oxide rubber composites. The value of specific heat capacity was measured with a PerkinElmer DSC 8000 differential scanning calorimeter using modulated temperature mode of operation. The heterogeneous material under investigation was the graphene oxide/rubber composite, which is used in the production of roller bearing seals. Two types of rubber have been used as the basic matrix of composites: the hydrogenated acrylonitrile butadiene rubber and the fluoroelastomer. Graphene oxide reduced with sodium hypophosphite was applied as a composite filler. The main goals of the work was to expand the database of thermophysical properties of materials and to investigate the influence of material heterogeneity on the results of specific heat capacity measurements obtained with smallsized test samples.