盐雾环境对部分染料日晒牢度的影响

为探索沿海地区纺织品日晒牢度较差的成因，采用中性、酸性盐雾条件模拟海洋大气环境，对部分染料染色的织物进行加速日晒实验。利用测定试样与原样相比色度值变化的方法，判断染料耐日晒情况，探讨模拟海洋大气环境对染料日晒牢度的特殊影响。结果表明：盐雾环境不会影响染料本身的色光，但盐雾环境对不同结构染料的日晒牢度有显著影响；蒽醌类染料在盐雾环境下的日晒牢度显著低于该染料在正常大气环境中的日晒牢度；盐雾环境对偶氮类染料的日晒牢度影响较小。

Effects of salt spray on light fastness of dyed fabrics

For searching the cause that leads to somewhat lower light fastness of dyed fabrics in coastal areas, the accelerated neutral salt spray test and acidy salt spray test were used to simulate a marine environment, and the accelerated exposure to sunlight experiment of dyed fabrics was performed, and the light fastness of the fabrics was tested and compared with the control samples, investigating effects of the marine environment on light fastness of dyed fabrics. The experimental results revealed that the salt spray had little influence on the shade of the dyes. However, it was observed that the light fastness of dyes with different structures was not alike in salt spray environment. Under the salt spray environment, the light fastness of the anthraquinone dyes was much lower than that under the normal atmospheric environment. But the salt spray test had less influence on the light fastness of azo dyes.