The common Rhodamine B dye in our life is a shinning green powder. This kind of dye is easy to dissolve in water. It’s a dye for cloth, paper products or cosmetics.What are the dyeing methods of Rhodamine B dye? Here we Get to know it.
How does Rhodamine B dye work during dyeing process?
Due to the fact that the surface potential of cellulose fiber will be raised accidentally in the neutral or weak alkaline dyeing bath, and it can generate a certain charge rejection with the alkaline dye anion. After adding the salt electrolyte solution, a large number of positively charged sodium ions are connected with the dye anion. They adhere to the charge neutrality, greatly reducing the difficulty of dyeing process, promoting the close combination of fiber appearance and dye molecules The dyeing process of basic dyes can be divided into three stages. In addition, the dyeing process of basic dyes should not be too fast in adsorption.
If the essence of Rhodamine B dye is in the process of absorption, it is a separation process of electrolytes, which may cause the dye to aggregate and form an uneven dyeing state. The electrolyte is involved in the middle. This can not only prevent the occurrence of the above situation, but also improve the printing and dyeing speed of the dyeing process.
What are the dyeing methods of Rhodamine B dye
1. Dyeing methods with different retarders controlling temperature:
In this method, different retarders are used and the heating time is extended properly to make acrylic fiber dyed evenly. Temperature must be strictly controlled during dyeing. This method is suitable for the dyeing of coarse fiber, rope part and wool / acrylic blended yarn. The dye is absorbed gradually with the increase of temperature, which makes the wool / acrylic blended yarn easy to dye acid dyes. Some softeners can be added properly. The dyeing process should be controlled properly so as to make the dyeing more uniform.
2. Retarder dyeing method:
The barrier effect of basic rosin retarder on acid group of acrylic fiber was studied. The amount of retarder makes acrylic fiber saturated properly, hinders the absorptivity of cations in water, and slows down the dyeing process. This dyeing method is suitable for all kinds of acrylic fibers.
The above is for some knowledge for basic Rhodamine B dye. If you need to know more details, welcome contact with us.
Contact person: Miss Jessie Geng
Post time: Feb-16-2020