溶胶-凝胶技术能显著提高直接黑染料的湿牢度，对染色织物还有增深效果。
The sol-gel technique can improve markedly the wet color fastness and give deepening effect on dyed fabrics.
直接黑38进行了比较，结果显示：这些染料在上染曲线、染色深度、染色工艺、可见光谱和染料色光与C。
I. Direct Black 38. Similar dye exhaustion curves, color shades and dye depths, dye processing as well as absorption spectra were shown.
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