Rozdziały

Stały URI dla kolekcjihttp://hdl.handle.net/11652/4411

Przeglądaj

Teraz wyświetlane 1 - 2 z 2

Investigation of wettability measurements of protective gloves materials
(Wydawnictwo Politechniki Łódzkiej, 2022) Irzmańska, Emilia; Adamus-Włodarczyk, Agnieszka; Jastrzębska, Aleksandra; Litwicka, Natalia
Wettability measurements of the polymeric materials that are designed to be used for protective gloves are the key aspect in the evaluation of their potential safety of use. The gloves made of polymeric materials that will be resistant to chemical or biological contamination should exhibit low wettability and good adhesive properties to reduce the possibility of accumulation of hazardous substances on the surfaces of the gloves together with losing dexterity of hand movement during work. Currently, in laboratory practice, there is no method to investigate thoroughly the wetting properties of polymeric surfaces taking into consideration parameters like water permeability index, non-wettability index, and absorption index. The presented research concerns the novel way of measuring the wettability of polymeric protective gloves, and the validation of the proposed method. Based on the series of performed measurements, a thorough assessment of the uncertainty budgets for individual components of performed metrological analysis of obtained results was performed. Based on these findings, the measurement errors that could affect the reliability, repeatability, and quality of the performed investigation have been identified.
A self-healing system for the soles of all rubber protective footwear
(Wydawnictwo Politechniki Łódzkiej, 2022) Adamus-Włodarczyk, Agnieszka; Irzmańska, Emilia; Szczepański, Grzegorz; Strąkowska, Anna; Rezmer, Sebastian; Dobrowolski, Mirosław
The objective of work was to improve the safety performance of protective footwear by increasing its service time using next-generation polymeric materials featuring autonomous self-healing mechanisms capable of repairing mechanical defects in a sole structure without an external intervention. The project innovation consists of using autonomous self-healing mechanisms in protective footwear to increase its service time and improve its safety performance in the workplace. Some mechanical defects naturally occur in the structure of personal protective equipment in the course of its normal use. While initially those defects are often not visible and difficult to detect, they may compromise polymeric materials and over time lead to permanent damage and shorter service times. The applied autonomous self-healing mechanisms (ASMs) have the capacity of immediate material regeneration without the external intervention. The first ASM involves a micro-encapsulated monomer released in the case of damage to fill the resulting defect in the sole. The other ASM involves the implementation of a network of channels supplying the monomer to the damaged area.