紫外光敏变色织物的颜色响应性能研究

Study on the Color Change Response of Ultraviolet Photosensitive Fabrics

紫外光敏变色织物在紫外线照射下发生变色反应,紫外线消失时恢复到原来颜色。文章通过采用数码测色法探讨了在5种不同紫外光辐照强度下,5种紫外变色织物随着时间变化颜色的响应性能,研究发现:当紫外光辐照强度不变时,紫外光敏织物颜色达到稳定后,不会随暴露时间的增加而发生改变;织物的色相H与饱和度S均以指数函数的形式变化,在紫外光辐照下,变化速度先快后慢,最后达到稳定;织物变色稳定后的颜色色相H和饱和度S受紫外光辐照强度影响显著,尤其是饱和度S与随辐照强度的增加而显著上升,与时间无关。基于上述结果,通过系统表征该类织物变色过程中的颜色色相和饱和度,就可以建立紫外光辐照强度和颜色HSV特征值之间的关系,进而可以通过紫外光敏变色织物的颜色变化反向表征紫外强度,并给出可视化颜色预警指示,开发出新型针对紫外线防护的功能性纺织品。

The color of ultraviolet(UV)photosensitive fabrics change under UV exposure and recover after the UV light source removed.In this paper,the color change response performances of five kinds of ultraviolet photosensitive fabrics under five different UV irradiation intensities were explored via digital color measurement.The result indicated that when the intensity of UV irradiation remains unchanged,the color of UV photosensitive fabrics remained unchanged with the increase of exposure time.The hue(H)and saturation(S)of fabric color changed following a form of an exponential function.Under UV irradiation,the color change speed was fast at the beginning and then slowed down,and finally stayed stably at the final color.The H value and S value of the fabrics’stable final color were significantly affected by ultraviolet irradiation intensity,especially the S value increased significantly with the increase of UV irradiation intensity,which was not affected by the duration.Based on the above results,the relationship between UV radiation intensity and color HSV values can be established by systematically characterizing the H value and S value of the colors during the process of color change.Then the UV intensity could be inversely characterized by the color of UV photosensitive fabrics.Visual color warning indicators could be given and new functional textiles for ultraviolet protection could be possibly developed based on the research.