## 4 Conclusions  
The research presented in this article describes the evaluation of the use of two textile multilayer composites with coatings: ZrO\({}_{2}\)-TiO\({}_{2}\)-Al (produced using PVD) and parylene C (produced using CVD) in the construction of thermally insulating protective gloves with potential use in metallurgical protective clothing.  
To assess the composites in terms of the safety of the glove user, these materials were tested in accordance with the EN ISO 12127-1 (contact heat) and EN ISO 6942 (radiant heat) standards. Moreover, an experiment was carried out in which the kinetics of heat transfer through composites exposed to the heat of a hot plate at a constant temperature were examined using thermal imaging. The kinetics of heat transfer were also examined by CFD modeling using three-dimensional models of both composites designed in the CAD environment. Based on the obtained research results, the following conclusions can be formulated:  
* Based on the experiment carried out according to the EN ISO 12127-1 standard, it was shown that both composites achieved the required insulation against contact heat at a contact temperature of 250 \({}^{\circ}\)C. Composite \(B\), which had a parylene C coating, achieved a threshold time that was 22.6% longer than composite \(A\), which had a ZrO\({}_{2}\)-TiO\({}_{2}\)-Al coating.
* Based on the experiment carried out according to the EN ISO 6942 standard, it was shown that both composites achieved the highest (4 th) level of protection effectiveness (\(RHTI_{24}\)) against radiation heat for a heat flux of 20 kW m\({}^{-2}\). Composite \(B\), which had a parylene C coating, achieved a \(RHTI_{24}\) value higher by 9.3% compared to composite \(A\), which had a ZrO\({}_{2}\)-TiO\({}_{2}\)-Al coating.
* Both of the above methods showed that both composites can be taken into account in the construction of the palm part of a metallurgical protective glove.
* Based on the study of the kinetics of heat transfer from the hot plate penetrating through the composites exposed to the heat using thermal imaging, it was shown that the use of a parylene C coating clearly affects the better thermal insulation of the composite \(B\). The heating rate of the composite \(B\) in the first 2 min of the experiment (\(R_{\rm T\,exp}{}^{0-2}\)) is 1.14 \({}^{\circ}\)C\(\cdot\)min\({}^{-1}\) slower compared to composite \(A\), in which a ZrO\({}_{2}\)-TiO\({}_{2}\)-Al coating was used.  
* The simulation results of heat transfer from the heat transfer passing through the designed 3D models of both composites, as well as thermal imaging, showed that composite \(B\), in which a parylene C coating was used, is a better heat insulator, and its heating rate in the first 2 min of the simulated experiment (\(R_{\mathrm{T\,sim\,}}0^{-2}\)) is 0.58 \({}^{\circ}\)C\(\cdot\)min\({}^{-1}\) slower compared to composite \(A\).
* Heat loss calculations based on simulations of the heating process of both composites showed that the use of a parylene C coating on the basalt fabric increases the thermal barrier of composite \(B\) by approximately 10%, while the use of a ZrO\({}_{2}\)-TiO\({}_{2}\)-Al coating increases the thermal barrier of composite \(A\) by approximately 2%.
* The obtained results showed the usefulness of ZrO\({}_{2}\)-TiO\({}_{2}\)-Al coating and parylene C coating in the design of metallurgical protective gloves based on multilayer composites.