HomeGenerally, in a mixed system of sodium hydroxide and hydrosulfite, the dyes on the fabric are reduced at a higher temperature. Sometimes, polyvinyl pyrrolidone solution needs to be added, such as BASF's ALigen A.
Use 5-10ml/L 38° caustic soda, 1-2ml/L thermal stability dispersant and 3-5g/L insurance powder for treatment, and add 0.5-1g/L anthraquinone powder as an indicator. If the insurance powder and caustic soda are sufficient, anthraquinone will turn the color stripping solution red; if the color stripping solution turns yellow or brown, caustic soda and insurance powder must be further added. The fabric should be thoroughly washed after color removal.
The rayon fabric material is a blended fabric, not woven from a single textile fiber. It has the advantages of pure cotton and silk and is widely used in the production of clothing and medical and sanitary products, but it is easy to shrink and mold. So, what rayon fabric? What are the advantages and disadvantages?