Abstract:

In order to improve the accuracy of testing results of moisture-absorption and heat-generated properties of textile, the uncertainty for moisture-absorption and heat-generated properties test of textiles was assessed, using the method of FZ/T 73036-2010 Moisture-absorption and Heat-generated Knitted Underwear Appendix A to test the moisture-absorption and heat-generated properties of knitted fabric. Analyzing and calculating the influencing factors including thetemperature sensor, timer, random effect during the test procedure, the uncertainty component of two important evaluation indexes which effect during the test procedure, the uncertainty component of two important evaluation indexes which affect the maximum temperature rise value and average temperature rise value in 30 minutes. And then  the combined uncertainty and extended uncertainty were assessed. The result show that the combined uncertainty of the maximum temperature rise value which is 0.35℃, and the combined uncertainty of the average temperature rise value in 30 min is 0.19℃. The uncertainties caused by temperature sensor and timer are less than that caused by the random effects during the testing process.The uniformity of the sample composition, the sampling position and other random factors are the main factors affecting the repeatability of testing

Key words: textiles, moisture-absorption and heat-generated, uncertainty, heating value