Abstract
These days there are undeniably unique materials that, however, must also meet demanding safety requirements. In the case of vehicles, these are undoubtedly excellent fire protection characteristics. The aim of the work is to experimentally verify the proposed material compositions for long-term heat loads and the effect of thickness, the number of laminating layers (prepregs) as well as structures with different types of cores (primarily honeycomb made of Nomex paper type T722 of different densities, aluminum honeycomb and PET foam) and composite coating based on a glass-reinforced phenolic matrix. The selected materials are suitable candidates for intelligent sandwich structures, usable especially for interior cladding applications in the industry for the production of means of public transport (e.g., train units, trams, buses, hybrid vehicles).
Highlights
Just as polymer composites are known for the synergistic effect of their main building components and the ability to tailor mechanical properties, this is doubly true of sandwich structures with a composite coating
The ignition time is shortened for individual structures A, B, C with a honeycomb density of 80 kg·m−3, which may be due to the fact that the core does not participate in the ignition process at all
As can canbe beseen seenfrom fromthe the above text, reaction of composite materials fire deon many parameters, either external or internal, to pends on many parameters, either external orrelated internal, the composition of the composite
Summary
Just as polymer composites are known for the synergistic effect of their main building components and the ability to tailor mechanical properties, this is doubly true of sandwich structures with a composite coating. The composite sandwich structure forms a certain synergistic structural unit in which each building component fulfills its specific function. The main benefits of sandwich constructions are weight and rigidity. Their other advantages can be, with a suitable combination of materials, thermal insulation, sound insulation properties and especially their resistance to burning, which plays an increasingly important role in the transport industry. The following overview of potential solutions for suitable refractory materials shows the current state of the art
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