Assessment of protective properties of leather materials obtained using ecologically safe mineral compositions
| Jazyk: | ukrajinština |
|---|---|
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Technology audit and production reserves; Том 5, № 4(25) (2015): Technologies of food, light and chemical industry; 64-69 Technology audit and production reserves; Том 5, № 4(25) (2015): Технології харчової, легкої та хімічної промисловості; 64-69 Technology audit and production reserves; Том 5, № 4(25) (2015): Технологии пищевой, легкой и химической промышленности; 64-69 |
| ISSN: | 2226-3780 2312-8372 |
| Popis: | В даній статті представлено результати випробувань шкіряних матеріалів, отриманих з використанням екобезпечних мінеральних композицій на основі природних цеоліту та монтморилоніту. Визначено вплив мінерального наповнення шкіряного напівфабрикату на експлуатаційні, екологічні, гігієнічні та захисні властивості готових шкір та їх придатність для виготовлення деталей верху спеціального захисного взуття. В данной статье представлены результаты испытаний кожаных материалов, полученных с использованием экобезопасных минеральных композиций на основе природных цеолита и монтмориллонита. Определено влияние минерального наполнения кожевенного полуфабриката на эксплуатационные, экологические и защитные свойства готовых кож и их пригодность для изготовления деталей верха специальной защитной обуви. Special production footwear is the primary means of personal protection from harmful factors, which purpose is to guarantee human safety in the workplace. Accordingly, shoe materials that are used in the production of the shoes should have increased protective properties.The results of tests of leather materials obtained using ecologically safe mineral compositions of natural origin have been presented in the article. The influence of the mineral content of semi-finished leather on operational, environmental and safety properties of finished leather and suitability for the manufacture of top of special protective footwear have been determined.During the studies the environmental safety of researched skins for external and internal parts of uppers by setting exposure Cr (VI), formaldehyde and heavy metals and their comparison with MPC for materials of the first category that have contact with the skin of the foot have been evaluated.Moisture, water resistance and hygroscopic properties of skin have been defined by setting parameters of moisture, water yielding capacity, water adsorption in dynamic conditions, moisture soaking in static and dynamic conditions, wet and moisture content of leather for 2 and 24 hours.Thermal resistance of leather has been determined by determining the thermal resistance of the material to burning with hot metal, heat exposure 200 ºС in air-dry condition and to the influence of hot surfaces.To predict the sustainability and reliability of footwear without loss of functional properties, changes of physical and mechanical properties have been defined after aging of researched skins at low and high temperatures. Also defects have been evaluated on samples after repeated bending at ambient and low (-15 ºС) temperatures.The results show the feasibility of using animal skins with mineral filling for making comfortable, environmentally friendly footwear with high humidity, water and thermal resistant properties. |
| Databáze: | OpenAIRE |
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