摘要
结合主观视觉评价方法,对白度仪和紫外可见光分光光度计测试指标在表征织物遮光性的可行性和适用性方面进行研究。结果表明:由白度仪测得的透明度能够在一定程度上反映织物的视觉透明感,但其数值大小受织物颜色的影响较为明显;有色织物的透明度值与视觉透明感的相关性低于白色织物。用紫外可见光分光光度计测得的可见光范围内各单色光的平均透射系数更适合于表征及评价织物的遮光性能,尤其适合于不同颜色的织物,该值比白度仪单波段的光透明度值与视觉透明感的关系更加密切。平均透射系数值越小,表示织物的遮光性越好,该值大于40%的织物有明显透明感,小于20%的织物是不透明的。
This paper studies the applicability and feasibility of using the test results of whiteness tester and UV-Vis spectrophotometer in combination with subjective visual assessment to characterize the light shielding properties of fabrics.The results showed that the value of whiteness R457 and the value of transparency Vt which were obtained by whiteness tester reflected the visual clarity of fabric in a certain extent.However,the dependence of visual clarity of dyed fabrics on the transparency value Vt was low as compared with the white fabrics.The transmission coefficients of monochromatic light within the scope of visible lights could be measured by UV-Vis spectrophotometer,and the average the transmission coefficients Tj is more suitable for characterization and evaluation of the light shading performance of fabrics,especially coloured fabrics.The relationship between the Tj and the visual clarity of fabrics is much closer than that of Vt and visual clarity.The smaller the average transmission coefficient Tj,the better the shading performance of fabric.The experiments also proved that the fabrics were visible when the Tj was larger than 40%,but when the Tj was smaller than 20%,the fabrics were invisible.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2011年第3期70-76,共7页
Journal of Textile Research
基金
国家自然科学基金资助项目(NSFC5097315)
关键词
遮光性
透明度
透射系数
秩位分析
织物
light shielding property
transparency
transmission coefficient
rank location analysis
fabric
