Journal of Industrial Textiles ( IF 3.2 ) Pub Date : 2021-05-03 , DOI: 10.1177/15280837211011777 Yange Wei 1 , Yun Su 1, 2, 3 , Jun Li 1, 2, 3 , Jianda Huang 1
Workers are exposed to skin frostbite in extremely cold environments, especially in contact with cold surfaces. They must wear cold-resistant clothing/gloves to avoid frostbites. However, there was a lack of an accurate method to evaluate the cold-contact protective performance (CPP) of fabrics. In view of this, a test device was developed to simulate the cold-contact exposure by controlling cold-contact temperature and pressure. Then, a frostbite prediction model was proposed to predict the time to skin-frostbite (TSF) as an index for characterizing the CPP. It was found that the standard deviation of cold-contact temperature fluctuated within 0.03°C to 0.51°C in the same second, and the coefficient of variations of the TSF were from 1.35% to 6.97%, indicating that the device presents good stability, reliability, reproducibility. The TSFs for different fabric systems ranged from 35 s to 419.33 s, mostly depending on the fiber type, the thermal resistance, the thickness of fabric and the air content in the fabric. Finally, it was concluded that the proposed device provides a scientific and realistic measurement of CPP of fabrics.
中文翻译:
一种表征织物冷接触防护性能的测试装置
在极端寒冷的环境中,尤其是与寒冷的表面接触时,工人容易遭受皮肤冻伤。他们必须穿着耐寒的衣服/手套,以防冻伤。但是,缺乏评估织物的冷接触防护性能(CPP)的准确方法。有鉴于此,开发了一种通过控制冷接点温度和压力来模拟冷接点暴露的测试装置。然后,提出了冻伤预测模型,以预测皮肤冻伤的时间(TSF),作为表征CPP的指标。发现冷接触温度的标准偏差在同一秒内波动在0.03°C至0.51°C之间,TSF的变异系数从1.35%至6.97%,表明该器件具有良好的稳定性,可靠性,可重复性。不同织物系统的TSF在35 s至419.33 s之间,这主要取决于纤维类型,热阻,织物的厚度和织物中的空气含量。最后,得出的结论是,所提出的装置提供了一种科学和现实的织物CPP测量方法。