织物透湿性测试方法的比较

测量织物透湿性的方法有多种,它们在测量原理、测试条件和测量参数方面不一样。为比较各方法的特点,采用5种测试方法用于评价6种不同织物的透湿性能。试验结果表明,采用干燥剂倒杯法测得的透湿量最高,其次分别为新测试方法、倒杯法、正杯法。另外,新测试方法和出汗防护热板仪、倒杯法及干燥剂倒杯法有很好的相关性,由于该方法具有测试时间短、重复性好、灵敏度高、所需试样小的特点,可用于对织物透湿性的日常质量控制。

Comparison of test methods for measuring water vapor permeability of fabrics

At present,there are varieties of test methods available for measuring water vapor permeability of fabrics.They differ in measuring principles,test conditions,and measurement parameters.Five test methods were employed to evaluate the water vapor permeability of six different fabrics.The test results indicated the water vapor transmission rate obtained by the desiccant inverted cup method was the highest,followed by the new test method,the inverted cup method,and the upright cup method.In addition,the data obtained by the new test method are in good agreement with those obtained by sweating guarded hot plate,inverted cup method,and desiccant inverted cup method.Since this test method offers short test time,good repeatability,high sensitivity and small sample size,it is a very useful tool for routinely testing water vapor permeability of fabrics for quality control in textile plants.