6-amino-1-hexanol adsorption type hydrogen peroxide bleaching stabilizer

Abstract

The invention discloses a 6-amino-1-hexanol adsorption type hydrogen peroxide bleaching stabilizer which is prepared from the following constituents in parts by weight: 0.1 to 3 parts of 6-amino-1-hexanol, 2 to 5 parts of active carbon, 0.1 to 0.4 part of urea and 10 to 20 parts of water. A preparation method of the 6-amino-1-hexanol adsorption type hydrogen peroxide bleaching stabilizer comprises the following steps of mixing the urea and the water, then dropwise adding the 6-amino-1-hexanol, and evenly stirring; adding the active carbon, and standing for 10 to 20 hours at a low temperature; filtering to remove the active carbon, so as to obtain the hydrogen peroxide bleaching stabilizer disclosed by the invention; and the stabilizer is used in a bleaching treatment process of cotton fabrics. According to the 6-amino-1-hexanol adsorption type hydrogen peroxide bleaching stabilizer, the 6-amino-1-hexanol is added as the raw material constituent of the adsorption type hydrogen peroxide bleaching stabilizer, so that the relatively high adsorbability to metal ions is available; hydrogen peroxide can be stabilized better; the whiteness of the treated fabrics is relatively good; meanwhile, the damage to the fabrics is relatively small, therefore the 6-amino-1-hexanol adsorption type hydrogen peroxide bleaching stabilizer is a novel peroxide bleaching stabilizer and is relatively wide in market promotion values.

Description

Technical field: [0001] The invention relates to the technical field of textile auxiliaries, in particular to a 6-amino-1-hexanol adsorption type hydrogen peroxide bleaching stabilizer and its application. Background technique: [0002] Hydrogen peroxide bleaching first appeared in 1938. Due to the low oxidation potential of hydrogen peroxide, the oxidative damage to fibers is relatively small, and there is no potential damage. It is widely used in cellulose fibers, especially cotton fibers and their blended fabrics. Bleaching process. Hydrogen peroxide bleaching not only has the characteristics of low refining requirements, combined with refining and pollution-free, [0003] However, hydrogen peroxide as a bleaching agent has poor stability, and rapid decomposition reactions can occur under the catalysis of radiated light, heavy metal ions such as iron ions and copper ions, and hydrogen peroxide bleaching is usually carried out under alkaline conditions, so that the hydrog...

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Problems solved by technology

However, the currently most widely used hydrogen peroxide steaming process also has shortcomings: the hydrogen peroxide steaming process needs to be treated at high temperature for up to 1 hour to complete the bleaching effect, which not only consumes high energy, but also causes great damage to the fibers. The breaking strength decreases by 15% or more, and the degradation rate of cellulose fibers reaches 40%-50%, or even higher

[0006] Adsorption stabilizer sodium silicate, also known as water glass or sodium silicate, is currently the most commonly used stabilizer for hydrogen peroxide bleaching. The highly dispersed silicic acid colloid obtained after hydrolysis has a strong adsorption effect on heavy metal ions. It loses its catalytic activity and effectively inhibits the excessive decomposition of hydrogen peroxide. The whiteness of bleached fabrics is high and the cost is low, but it is easy to form silica scale on the surface of the roll. This phenomenon is more obvious at high temperatures, and the silica scale Difficult to remove, deposited on the surface of the fabric, hardening the handle of the processed fabric

[0007] Magnesium fatty acid salts can form colloids in alkaline bleaching solutions, and have high adsorption capacity for heavy metal ions, but have low buffering capacity for pH values ​​and poor high temperature resistance, so they are not suitable for short-process pretreatment, polypropylene Amides and their partial hydrolyzates stabilize hydrogen peroxide by inhibiting heavy metal ions through colloidal adsorption, but decomposition reactions occur in concentrated alkali, and the suspension and adsorption properties are reduced

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