In order to study dyeing shade by domestic dyestuff, two kinds of domestic dyestuffs as Nylon Fast Black 3B and Nylon Fast Black G, have been performed.
The obtained results may be summarized as follows:
1. As the absorbing capacity of Nylon for Nyl...
In order to study dyeing shade by domestic dyestuff, two kinds of domestic dyestuffs as Nylon Fast Black 3B and Nylon Fast Black G, have been performed.
The obtained results may be summarized as follows:
1. As the absorbing capacity of Nylon for Nylon Fast dyestuff, not only is the total amount of dye absorbed influenced by the amount of acid, but the rate of exhaustion is also dependent upon acidity.
2. Absorption rate of acid dyes is influenced to a great extent by temprature, it must be dyed above 40℃.
3. Neutral bath method lead to significant differences in the dyed Nylon fabric, but acid bath method lead to little differences by the same dyestuff.
4. As the same dyestuff, we found out exchange of color shade was made according to the kinds of acid, pH range, dyeing methods. We noticed that Nylon fabric has been well dyed in heavy shade using strong acid with acid dyestuff.
5. There is no significant differences for Color-fastness of dyed goods according to the kinds of acid.