纺织品视觉遮蔽性评价指标比较研究

对常见的纺织品光学性能的一些表征指标，包括白度、可见光波段平均透射率、明度、透明度及不透明度等进行对比，分析探讨其在表征纺织品视觉遮蔽性上的适用性和可行性。结果表明：织物为浅色或白色时，其视觉遮蔽性可采用白度表征；当织物纤维种类相同时，则可以采用明度；550nm波长处透射率以及可见光波段平均透射率与不透明度相关性都较好，在没有相关标准的前提下，均可以用来表征各类织物的视觉遮蔽性。

Comparative study on evaluating index for visual shielding property of textiles

For discuss and analyze their applicability and feasibility on the characterization of the visual shielding property of textiles, Comparison is made among the commonly used optical property indices of the textiles, which includes the whiteness, average transmittance under visible light, brightness, transparency, opaqueness and etc. The result shows: whiteness can be used to indicate the visual shielding property when fabrics are light color or white, while brightness can be used to show this property of fabrics with different colors under the conditions that the fabrics are made from the same fiber. The correlation between the opaqueness and transmittance is good with the wavelength of 550nm, the same result comes out while the average transmittance is under visible light. Under the conditions that there is no standard to express the visual shielding property for fabrics with different fibers and colors, the two kinds of transmittances are suggested to be adopted to characterize the visual shielding property of textiles.