Sportswear textiles emissivity measurement: comparison of IR thermography and emissometry techniques

Three sportswear textiles are compared, one normal and two 'special' with Ag+ ions and Carbon powder added, with different colors. The emissivity of the textiles has been measured to determine if it is increased in the 'special' textiles with respect to the normal one. No substantial increase has been noticed. Nonetheless, the test implied some non-standard procedure due to the semitransparent nature of the textiles, in comparison with the normal procedure that is commonly used on opaque surfaces. The test is also carried out by IR emissometry technique. The results are compared and discussed.