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Zastosowanie metod modelowania matematycznego do wyznaczania bezpiecznego czasu stosowania rękawic chroniących przed czynnikami chemicznymi

Chęsy P., Irzmańska E.

Przegląd Włókienniczy - Włókno, Odzież, Skóra

2017

nr 1

23--28

A new approach to determining the end-of-service-life protecting against chemicals made from polymeric materials, which includes the application of mathematical modeling methods is presented in the article. The definition of the end-of-service-life concerns time, after which the polymeric material of protective gloves does not exhibit effective barrier against chemicals at workplace. Based on the review of the literature, factors, which influence on the structural changes of polymeric materials, and are not taken into account in the standard procedure acc. EN 16523-1:2015 (PN-EN 16523-1:2015-05) were characterized in detail.These factors determine the end-of-service-life of protective gloves. The procedure of exploring of functional dependency in mathematical modelling was also presented.

Ocena bezpiecznego czasu użytkowania rękawic ochronnych

Irzmańska E.

Pomiary Automatyka Kontrola

2013

R. 59, nr 4

376--379

W artykule przedstawiono wyniki badań oceny bezpiecznego czasu zużycia rękawic ochronnych wśród pracowników wybranych zakładów mechanicznych i warsztatów samochodowych, narażonych na jednoczesne działanie olejów mineralnych i czynników mechanicznych. Na podstawie wyników badań stwierdzono, że opracowana metoda w wystarczającym stopniu symuluje degradację właściwości ochronnych rękawic, odpowiadającą warunkom rzeczywistym na stanowiskach pracy, co pozwala na szacowanie przybliżonego okresu po upływie którego wyroby przestają stanowić barierę ochronną w środowisku pracy.

This paper presents the results of evaluation of the end-of-service-life of gloves among employees of selected plants and mechanical garages, exposed to the simultaneous action of mineral oils and mechanical factors. The end-of-service-life assessment was performed on a simulation device which was in the laboratory CIOP-PIB [2, 4]. Assumptions for construction equipment and testing methods were developed based on the results of the survey in mechanical workshops [5]. Research were carried out for five representative materials of gloves protecting against mechanical and mineral oils (Tables 1, 3). Based on the results, it was found that the tight gloves made entirely from polymers of all-rubber structure, lasted longer than the protective properties of the glove knitted and partially coated with a layer of polymer, which suggested the test start time of use in the case of all-rubber gloves after 8 h (analysis rising to 16 h), and the partially coated gloves after 4 h (analysis decreasing to 2 h). The study simulating the use of gloves during 4 and 8 hours showed a significant difference in the obtained values of chemical and mechanical parameters in relation to the value for the new glove evaluated in standard conditions and expressed on a performance level declared by the manufacturers (Tables 2, 4). It was found that the proposed method adequately simulated the degradation of the protective gloves, corresponding to the real conditions in the workplace, allowing the estimation of the approximate period after which the products were no longer a barrier in the workplace.