During a world-wide pandemic solutions for the production of anti-viral products is an at all-time high, motivating research into a wide array of potential solutions, with special interest to those capable of being deployed with as close to zero alterations to the production methods. The present work investigates the potential of using two additives, a commercially available masterbatch and a copper oxide powder, compounded using LDPE as a matrix, to be incorporated in a standard industrial setting. The final products were conventional polyester-based TNTs with 5 g m-2 coatings obtained from the micronized LDPE compounds. Antimicrobial and antiviral properties were evaluated for the two TNT products, revealing both solutions as technical equivalents and capable solutions for the production of PPEs.
Duplex stainless steel is a material that attracts great interest of different branches of engineering and industry because of its combination of good structural and mechanical characteristics and high corrosion resistance. The microstructure of duplex steel presents an example of composite material with approximately equal amounts of austenite and ferrite phases. Physical and mechanical properties of these components are different so their behaviors under loading are different too. Therefore it is important to analyze the distribution of applied stress between ferrite and austenite phases of duplex steel. The analysis of stress distribution was made by X-ray diffraction technique. X-ray diffraction method allows separate measuring of stresses in each phase and determination of others mechanical characteristics as Young ́s modulus, yield stress of ferrite and austenite both in elastic and plastic region. In presented paper the samples of duplex steel after rolling were loaded by calibrated springs; using of Cr-Kα radiation allows carrying out of stress measurements in ferrite and austenite phases of duplex stainless steel.
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