Mathematical models for the design of composite materials with barrier properties. Article 2. Models of mass transfer processes in polymeric protective materials
Abstract
The theoretical and experimental results obtained by us, the totality of the literature data showed that the studied diffusion systems can be divided into five groups according to the main (dominant) processes. In each group, according to the degree of complication, it is necessary to distinguish between processes in single-layer, surface-modified and multilayer materials. All processes are characterized by their own time-varying concentration fields in materials and by the type of output (kinetic) curves reflecting the accumulation of diffusant behind the materials, i.e. each system has its own physical model of the process with its characteristic parameters and their numerical values, as well as the corresponding mathematical model. In total, twenty variants of physical models of transfer processes have been identified when materials are exposed to liquid toxic and aggressive environment. In order to highlight specific diffusion systems and identify them with one or another mathematical model, thirteen criteria have been developed. All of them reflect the revealed features of the processes in the materials. On the basis of the proposed physical and mathematical models, the core of the information retrieval and computational system was formed to predict the protective properties of materials for personal protective equipment and design protective systems.
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Copyright (c) 2021 Valentin K. Gorelenkov, Dmitry A. Melnikov
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