Optical characterization of heat-generating yarns in textile fabrics

该项目是与FilSpec公司合作进行的，旨在表征一系列由专业纱线混合制成的纺织织物的光学性能和在光学照明下的发热能力。这些特殊的纱线含有一定比例的炭黑和矿物纳米粒子，它们负责可见光和近红外的光学吸收。将对普通纤维和近红外敏感纤维的不同组合进行测试，以评估这些混合物对其发热能力的影响。光学研究包括在不同照明条件下测量400 - 1500nm范围内的透射率和吸收光谱。这些测量将与照明下温度变化的测量相关联。将利用瞬态吸收测量对自热现象的动力学进行探索性研究。

This project, conducted in partnership with FilSpec Inc., aims to characterize the optical properties and theheating power, under optical illumination, of a series of textile fabrics made from a blend of specialized yarns.These specialized yarns contain a certain proportion of carbon black and mineral nanoparticles, which areresponsible for their optical absorption in the visible and near infrared. Textiles with different combinations ofregular and near-infrared sensitive fibers will be tested to assess the impact of these mixtures on their heatingpower.Optical studies include measurements of transmittance and absorbance spectra in the 400 to 1500 nm range,under different illumination conditions. These measurements will be correlated with measurements oftemperature change under illumination. An exploratory study of the dynamics of the self-heating phenomenonwill be carried out using transient absorption measurements.