Case 3 – Textile Industry Bleaching

SDIC is also widely used in bleaching agents for natural and synthetic fibers in the textile industry.

The principle of bleaching is to destroy the pigments in natural fibers and synthetic fibers, and it can release hypochlorous acid evenly in the aqueous solution. The reaction will destroy the original pigment in the fiber and change the wavelength of light absorbed by the fiber to achieve the purpose of bleaching.

Compared with the use of bleaching agents in the traditional sense, SDIC has great advantages. Traditional bleaching agents can only be used at lower temperatures, because the speed at which traditional bleaching agents destroy the molecular structure of fibers under high temperature conditions will be reduced. Accelerate, the strength of the fiber will drop rapidly under its influence. And SDIC can still achieve good bleaching effect even at lower temperature;

In addition, the use of SDIC to destroy the molecular structure of natural fibers and synthetic fibers is slow, the bleaching effect is good, and the strength of the fibers will not be greatly affected. In addition, adding SDIC to the bleaching agent can also improve the hydrophilicity of the clothes, remove the cotton pulp in the clothes, reduce the degradation rate of cellulose, etc., and also improve the flexibility and ductility of the clothes.