In general, Auramine O is widely used in the industrial industry. It is mainly used for dyeing hemp, paper, leather, straw woven goods, rayon, etc., and also for printing and dyeing cotton goods. However, if you want to achieve the desired dyeing effect, you need to pay more attention when choosing. So how do we choose alkaline light yellow o for different purposes? The following article will take you to learn more about it:
1, Selection criteria
1. Choose Auramine O according to fiber properties: due to different properties of various fibers, it is necessary to choose suitable dyes when dyeing. For example, when dyeing cotton fibers, because its molecular structure contains many hydrophilic hydroxyl groups, it is easy to absorb moisture and swell, can react with reactive groups chemically, and is more alkali resistant. Therefore, direct, reducing, sulfurizing, ice dyes and reactive dyes can be selected for dyeing. Polyester has strong hydrophobicity, It is not alkali resistant at high temperature. In general, the above dyes should not be selected, but disperse dyes should be selected for dyeing.
2. Auramine O is selected according to the dyeing mechanical properties: due to different dyeing machines, the properties and requirements of dyes are also different. If used for roll dyeing, dyes with higher directness should be selected; For pad dyeing, the dyes with low directness should be selected, otherwise the products that do not meet the requirements such as deep in front, light in back and uneven color will be produced.
2, Usage Note:
1. According to the fear of open fire, the reagent with low ignition point should be sealed and stored in a cool, ventilated place away from the fire source.
2. It is a volatile chemical dye with low ignition point. It needs special attention in storage. It is very important to have an open fire. In case of an open fire, a fire may occur, so it is unstable, volatile and flammable. Therefore, in the process of storage, attention should be paid to avoiding light, maintaining ventilation, keeping away from fire sources and other points. The environment for storing materials should be dry.
3. Fire and explosion-proof measures shall be taken for the use of Auramine O. in case of fire, water can be sprayed, or dry powder or other fire extinguishers can be used. Clothes and gloves and protective glasses shall be worn during use. Food or smoking are not allowed during work. After the hands are stuck, they can be washed with bleach or methanol, and washed several times to clean them.
4. In addition, the staff should pay attention to safety protection measures when using Auramine O dye. On the premise of safety, the basic working principle is to use basic light yellow o reasonably and correctly.
The above points are the knowledge we shared for you about the selection and use of Auramine O. Thank you for reading. If our sharing provides you with corresponding help, please continue to pay attention to our website. We will share more wonderful news for you later. Thank you for your support.