The Influence of Mechanical, Physical and Chemical Influences on Protective Clothing

Abstract

The article is focused on testing the mechanical, physical and chemical characteristics of the selected protective clothing. Old anti-chemical protective clothing formerly used in tactical exercises (but never during a real intervention) was selected. Protective clothing has an expected lifespan when used correctly. When in use, external influences can negatively affect and function of these garments. The article describes the preparation of individual samples of protective clothing which were exposed to the effects of selected inorganic and organic chemicals, water vapor, UV radiation and long-term exposure to elevated temperatures. The prepared samples were subsequently torn on the tearing device, and the change of mechanical and physical properties was monitored. The stress at which the samples broke and the length they reached at the moment of breaking were measured. The exposure to individual chemicals, UV radiation and elevated temperature resulted in decreases in the modulus of elasticity in each case. The largest decrease was recorded in samples treated with hydrogen peroxide and the smallest in samples exposed to long-term thermal load.

Perception of Selected Factors on the Sustainability of SMEs: Empirical Study from Visegrad Group Countries

“…These results are more positive in Czech and Hungarian SMEs compared with Slovak (63.4%) and Polish (62.8%) SMEs. Authors Agarwal and Ansell [39], Dumitrescu and Deselnicu [40], Makovická Osvaldová et al [41], and Vandličková et al [42] claim that it is also necessary to pay attention to operational risks, especially from the perspective of product risks, process or system failures, failure of production processes, business interruption, accidents, insufficient utilization of production capacities, non-compliance with quality, etc.…”

“…According to Agarwal and Ansell [39], operational risks include product risks, process or system failures, legality and compliance issues, illegal or criminal activities, and human factors. Dumitrescu and Deselnicu [40], along with Makovická Osvaldová et al [41] and Vandličková et al [42], identify operational risks primarily as failures in production processes, systems, and services, i.e., risks resulting from business interruptions. These risks are assessments of factors affecting the production-technological process, technical failures, accidents, insufficient utilization of production capacities, low innovation rates, obsolete production equipment, product failure, as well as external risk sources, e.g., loss of suppliers, and scarcity of resources and raw materials.…”