Optical characterization of heat-generating yarns in textile fabrics

该项目是与FilSpec Inc.合作进行的，旨在表征由特种纱线混合制成的一系列纺织品在光学照明下的光学性能和加热功率。这些特种纱线含有一定比例的碳黑和矿物纳米颗粒，这是它们在可见光和近红外光吸收的主要原因。具有不同常规和近红外敏感纤维组合的纺织品将进行测试，以评估这些混合纤维对其加热能力的影响。光学研究包括在不同照明条件下测量400至1500 nm范围内的透过率和吸收光谱。这些测量值将与光照下的温度变化测量值相关联。将利用瞬变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.