Influence of solar radiation insolation precipitation on hydrophobized leather for shoe uppers

Q4 Engineering
A. Djuraev, T. Kodirov, Khalil Khabibullaevich Usmanov, A. Toshev, Shohrux Shuxratovich Shoyimov
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引用次数: 0

Abstract

The influence of solar radiation and precipitation on leather samples for the upper part of footwear, treated with water-repellent compounds, was determined and the process of their destruction in natural atmospheric conditions was determined. The study of the effect of solar radiation on natural skin has not been sufficiently studied. In connection with the above, the test was carried out on experimental hydrophobized and initial (control) leather samples in an open area to determine the insolation of solar radiation and precipitation on the skin for the upper shoes. During the tests, a systematic examination of the exposed samples was carried out for 1-6 months, sampling for physico-mechanical and other tests was recorded by meteorological conditions. After that, the samples were subjected to organoleptic evaluation, physical-mechanical and chemical-analytical analyses, as well as structural studies. It was visually determined that, depending on the variant of hydrophobization used, fibrillar collagen formations change in different ways. After atmospheric insolation acts on the control sample, its fibrillar structure changes sharply, numerous micro cracks appear, located mainly perpendicular to the fiber axis, and clearly defined dark zones are found between the fibrils. Fibril outlines become indistinct, numerous torn ends are observed. However, such changes are not observed for hydrophobized samples. Significant changes in physical and mechanical properties are observed in the first and fourth months of natural aging. In the hydrophobized sample, the rate of change in hydrothermal destruction and the appearance of cracks in the face layer subjected to aging in an open area, is always lower compared to the control sample.
太阳辐射日晒沉淀对鞋面疏水革的影响
测定了太阳辐射和降水对用防水化合物处理的鞋面皮革样品的影响,并确定了它们在自然大气条件下的破坏过程。关于太阳辐射对天然皮肤影响的研究还没有得到充分的研究。与上述内容相关,在开放区域对实验性疏水皮革样品和初始(对照)皮革样品进行测试,以确定太阳辐射和沉淀在鞋面鞋皮肤上的日照量。试验期间,对暴露样本进行了1-6个月的系统检查,并根据气象条件记录了物理力学和其他试验的采样情况。之后,对样品进行感官评价、物理力学和化学分析以及结构研究。视觉上确定,根据所使用的疏水化的变体,原纤维胶原的形成以不同的方式变化。大气暴晒作用于对照样品后,其原纤维结构急剧变化,出现大量微裂纹,主要位于垂直于纤维轴的位置,在原纤维之间发现清晰的暗区。纤维蛋白轮廓变得模糊,观察到许多撕裂的末端。然而,对于疏水化的样品没有观察到这种变化。在自然老化的第一个月和第四个月,观察到物理和机械性能的显著变化。在疏水化样品中,与对照样品相比,水热破坏的变化率和在开放区域经受老化的面层中出现裂纹的速率总是较低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Leather and Footwear Journal
Leather and Footwear Journal Engineering-Industrial and Manufacturing Engineering
CiteScore
0.90
自引率
0.00%
发文量
14
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