26—A STUDY OF LIGHT DAMAGE TO UNDYED TEXTILE YARNS UNDER A FADING LAMP AT A FIXED HUMIDITY

Publisher Website
Google Scholar
Abstract
An investigation is described in which the effect of light on several undyed textile fibres was studied with two sources of light, (i)natural sunlight and (ii) a Light-fastness Tester. The exposures were carried out in an atmosphere of controlled humidity, i.e., at 45% r.h., and behind glass. The results in terms of percentage loss in tensile strength, elongation, and energy to break are found to be identical for both types of exposure. Tendering by the Tester is shown to be twice as rapid as that by natural sunlight. By using the Tester for 24 hours per day as against 8 hours per day for sunlight, results could be obtained in one-sixth of the time. Moreover, the Light-fastness Tester is cheap and easy to handle compared with other sources of artificial light.

This publication has 11 references indexed in Scilit: