Sodium hydroxide,also known as caustic soda,is a solid form with excellent chemical properties and is used in agriculture and industry.Let me introduce its application in clothing!
1.Shorten dyeing time
Soda flakes are a new type of buffered solid base with few electrolytes and low ion strength when dissolved.Therefore,the coloring is slow during the alkaline addition process,which improves the uniformity of the dye.Whether dyeing dark or light colors,alkali can be added in about 20 minutes to shorten the dyeing time.
2.Good color yield
Using caustic soda instead of soda ash for color fixation can ensure sufficient color supply even when using 1/10 of the amount to replace soda ash.Accidentally adding excessive amounts of this product during operation will not affect the color of the fibers.
3.Dyes and equipment have wide adaptability and good dyeing reproducibility
Suitable for various reactive dyes,with high color rendering and reproducibility for reactive dyes of various structures;It is suitable for various devices,especially in low bath ratios and aerosol dyeing machines,and can effectively solve the differences between the inner and outer layers of cheese production.
4.Improve the quality of dyed products and reduce repair rates
Due to the slow coloring of flake alkali,excessive addition of alkali greatly reduces the color saturation rate.Especially for relatively sensitive colors,it can not only shorten the alkali addition time,but also greatly reduce many defects such as color spots generated during dyeing,effectively improve product quality,reduce rework,and thus save costs.
5.Environmentally friendly products
The use of caustic soda saves nearly ten times the amount of pure alkali and several water washes,and the low chemical oxygen demand value of dyeing residue greatly reduces the treatment load of printing and dyeing wastewater,reduces environmental pollution,and creates favorable conditions for expanding factory scale.
6.Reduce cleaning frequency and save pickling time
After dyeing,the number of water washes is reduced,saving the"acid washing"that makes the fibers neutral,shortening processing time,and reducing costs.
7.Easy to clean and improve fastness
Due to the low amount of fixing alkali used,it is easy to clean after dyeing,greatly reducing the white spots caused by the inability to clean with alkali after dyeing,and has better resistance to temperature friction and washing than pure alkali.
The above introduction is the relevant content of this issue.During the clothing manufacturing process,there is no problem of pipeline blockage caused by soda ash agglomeration.After being treated with caustic soda,these clothes became popular among the public and created huge profits.
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