The invention relates to a panel made of a composite material, wherein said composite material comprises a geo-polymer matrix and wool fibers. In the preparation of the geopolymer matrix, natural materials are preferably partially replaced with ashes from vegetable and/ or animal biomass. The composite panels described herein have chemical-physical characteristics that make them excellent insulating and fireproof materials, which can find application in various fields, i.e. as functional, structural and non-functional elements, in construction, in the naval sector, road transport, furniture, product design, etc.
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