The thesis focuses on the use of secondary raw materials in the production of vacuum insulation panels (VIP) with the intention of reducing their ecological impact and at the same time preserving their key properties. The aim of the thesis is to propose the possibility of using alternative secondary raw materials in the production of vacuum insulation panels (VIP). The thesis also includes the design of the technology for the production of these panels and the determination of their properties under laboratory conditions. Specifically, it consists in the partial replacement of nanosilica by recycled cellulose fibres in core insulators. The theoretical part describes in detail the vacuum insulation panels and their environmental aspect. The practical part includes the design of alternative recipes and their experimental evaluation. The most promising alternative recipe was selected and assessed for its environmental impact based on the evaluation of the results of the core insulators. At the end, VIPs were made from this alternative and traditional recipe and then their thermal insulation and mechanical properties were checked.
The results show that the alternative recipe achieves better thermal insulation properties than the traditional recipe at very low pressures, while at higher pressures the values remain acceptable. The mechanical properties were slightly worse for the alternative formulation, but still sufficient for practical applications. The environmental impact assessment by Life Cycle Impact Assessment (LCIA) confirmed a significant reduction in environmental impact due to the use of recycled cellulose fibres. The alternative recipe represents a more environmentally friendly and sustainable option for the production of core insulators for VIP.