改性涤纶与羊毛同浴染色的研究

通过对纤维K/S值的测定,研究了温度、pH值、载体等因素对改性涤纶与羊毛同浴染色时不同涤纶的上染性能和羊毛沾色的影响.结果表明,在相同的温度下,改性涤纶EDDP、ECDP具有更高的上染率.与改性涤纶同浴染色的羊毛对分散染料的沾色明显减少.羊毛/涤纶同浴染色时,染浴pH值大于5时,分散染料发生还原,涤纶上染率明显减少,羊毛沾色色调改变.羊毛/涤纶体系中加入适当的载体可使涤纶上染率有所提高,而过高的载体加入量反会使涤纶上染率下降.

Study on one-bath dyeing of modified polyester fiber with wool

Influence of temperature,pH value and carriers on the dye uptake of two kinds of modified polyester fibers were studied and the stain of the wool dyed with the modified polyester fibers in one bath were estimated using K/S values. The results showed that modified polyester fibers have better dyeability for disperse dyes as compared to the conventional polyester fibers when dyeing were carried out at same temperatures. The stain on wool dyed with modified polyester fibers were showed much less compared to the wool dyed with conventional polyester fibers. Dye reduction and color shade change were found when dyeing of wool/polyester was carried out at the pH higher than 5. The dye uptake was found increasing when an adequate amount of carrier was added. When an excessive amount of carrier was added, however, the dye uptake for both modified and conventional polyester fibers were found decreasing.