用活性艳红KN-5B、活性黑KN-B和活性红B-3BF染色双蛋白纤维混纺纱线,探讨了染色温度、Na2CO3和NaCl用量、染料用量对K/S值的影响,测试了染色纱线加碱固色前后的K/S值和固着速率曲线。结果表明：活性艳红KN-5B、活性黑KN-B和活性红B-3BF分别在60~70℃、40~60℃和50~80℃温度下,Na2CO3用量2~4 g/L,NaCl用量30 g/L,固色时间30 min左右时,可获得较好的染色效果。%Three reactive dyes namely reactive red bril iant KN-5B, black KN-B and red B-3BF were se-lected to dye double protein blending yarn. The effects of dyeing temperature, quantity of sodium carbonate, sodium chloride and dye on K/S value of the dyed yarn were investigated. The K/S values and fixation rate of three reactive dyes on double protein blending yarn before and after adding sodium carbonate were also test-ed. The results showed that the optimal fixation effect could be obtained under the fol ow process:sodium car-bonate 2~4 g/L, sodium sulfate 30 g/L, reactive red bril iant KN-5B, black KN-B and red B-3BF dyeing at 60~70℃, 40~60℃and 50~80℃for 30 min, respectively.
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