Central Institute for Labour Protection - National Research Institute (CIOP-PIB), Poland.
Int J Occup Saf Ergon. 2022 Dec;28(4):2668-2675. doi: 10.1080/10803548.2022.2057690. Epub 2022 Nov 7.
This work aimed to study the end of service life of soles of protective footwear resistant to selected mechanical factors and mineral oil. Three sole variants were examined; made from poly(ethylene-co-vinyl acetate) (EVA), poly(vinyl chloride) (PVC) and polyurethane (PU), currently widely used in all-rubber protective footwear. The preliminary study focused on the abrasion resistance and bending strength of the three sole materials after different times of exposure to mineral oil. Changes in density and hardness of the examined materials were evaluated following exposure to cyclical factors. Statistical analysis was performed to identify significant differences between the three types of polymers in terms of abrasion resistance, density and hardness following exposure to mineral oil for three different periods. Surface morphology of the sole materials was examined by means of scanning electron microscopy. The presented studies elucidate the effects of mineral oil on the basic mechanical parameters of all-rubber footwear soles.
本工作旨在研究抗选定机械因素和矿物油的防护鞋鞋底的使用寿命终结。研究了三种鞋底变体，它们由聚（乙烯-共-醋酸乙烯酯）（EVA）、聚氯乙烯（PVC）和聚氨酯（PU）制成，目前广泛用于全橡胶防护鞋。初步研究集中在三种鞋底材料在不同时间暴露于矿物油后的耐磨性和弯曲强度上。在暴露于循环因素后，评估了被检查材料的密度和硬度的变化。进行了统计分析，以确定在暴露于矿物油 3 个不同时间段后，三种聚合物在耐磨性、密度和硬度方面的显著差异。通过扫描电子显微镜检查了鞋底材料的表面形态。所进行的研究阐明了矿物油对全橡胶鞋鞋底基本机械参数的影响。
