In the field of polymer composites, the development of new materials, including composites with a high concentration of solid particles, raises questions about how the type, content and size of the filler in a polymer composite helps to improve the material properties of these materials. In this thesis, the mechanical properties of a composite prepared by using a LDPE (low density polyethylene) polymer matrix and copper particles, in the form of flakes and size of d50 = 35µm, will be investigated. We are interested in the variation of the mechanical properties by varying the filler fraction, copper particles, from 0% to 40% by volume. A 3-point bending test or "TPB" test, will be performed at constant temperature, by using a modular rheometer. The results obtained will give us a better understanding of the behaviour of the material under load and will tell us if the mechanical properties improve, how much they improve compared to the base polymer material and what this means for the possible application of such a material.
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