Bleaching process for animal fibers

Abstract

The invention discloses a bleaching process for animal fibers, and belongs to the field of fiber bleaching, in the scheme, a bleaching ball is broken due to impact, and hydrogen peroxide filled in the bleaching ball can be excited out due to instantaneous impact generated by the breaking, so that the bleaching ball can be used for bleaching the animal fibers. Meanwhile, strong impact energy can also promote the activity of hydrogen peroxide, increase the bleaching effect of the hydrogen peroxide and bleach animal fibers located at the bottom of the processing frame, the bleaching position is shrunk through the bleaching balls, the use amount of the hydrogen peroxide is reduced, the hydrogen peroxide treatment effect is improved, bleaching work can be conducted in the low-temperature state, and the bleaching efficiency is improved. The method has the advantages that the influence of self-decomposition of hydrogen peroxide on bleaching work is reduced, the economic benefit of bleaching is increased, and meanwhile, the animal fibers are protected by elastic fibers leaked after the bleaching balls are broken through reasonable design of the bleaching balls, so that the animal fibers are not liable to excessively contact with hydrogen peroxide and are not liable to be excessively bleached, and the bleaching effect is increased.

Description

technical field [0001] The present invention relates to the field of fiber bleaching, more particularly, to a bleaching process for animal fibers. Background technique [0002] Animal fibers are fibers obtained from the hair of animals or the glandular secretions of insects. The fibers obtained from animal hair include wool, rabbit hair, camel hair, goat hair, yak hair, etc.; the fibers obtained from animal gland secretions include silk, etc., and bleaching chemically refers to passing a colored thing through a A series of chemical reactions finally turned white. Bleaching can oxidize or reduce the chromophoric groups of organic colored substances, but the basic substances of organic colored substances are not destroyed. [0003] Existing bleaching agents mainly include oxidative bleaching agents and reducing bleaching agents. Among them, oxidative bleaching agents mainly include: hydrogen peroxide, sodium hypochlorite and sodium chlorite, etc., and reducing oxidizing agen...

AI Technical Summary

Problems solved by technology

[0004] The working environment of hydrogen peroxide bleaching is: PH9-11, when the temperature is 90-100°C, the decomposition rate of hydrogen peroxide reaches 90%, and the whiteness is the highest. When using high-temperature and high-pressure steaming, the time is only 1-2min. Hydrogen oxide itself is an unstable form. It is easily decomposed under high temperature and high pressure, which affects its own bleaching efficiency, increases the cost of the bleaching process, and reduces the economic benefits of bleaching.

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