Hydrogen peroxide stabilizer

Hydrogen peroxide is used for oxygen bleaching or one-bath production and processing of annealing, boiling and bleaching. Hydrogen peroxide is often added to the water. Hydrogen peroxide is relatively stable in weakly alkaline or neutral conditions, and in weakly alkaline conditions. The addition of hydrogen peroxide has strong oxidizing properties, and the presence of heavy metal ions leads to early catalytic decomposition of hydrogen peroxide, which not only causes damage to hydrogen peroxide, but also damages fibers. Therefore, in order to control the decomposition of hydrogen peroxide water in the production and processing process of oxygen drift and de-boiling drift bath, prevent fiber damage, and obtain better bleaching effect, in addition to controlling the pH value of hydrogen peroxide solution, It is necessary to add an auxiliary agent to alleviate the decomposition rate of hydrogen peroxide water. This kind of auxiliary agent added by the uncontrollable decomposition of hydrogen peroxide water is called hydrogen peroxide water stabilizer.

Required performance of hydrogen peroxide stabilizer:

Relatively stable hydrogen peroxide ions [HO2-]; control the generation of hydrogen peroxide radicals [HO2·]; resistant to strong alkalis.

Mechanism of hydrogen peroxide stabilizer:

The mechanism of hydrogen peroxide stabilizer is mainly divided into two types: absorption concept and complex concept. The concept of film adsorption is to use the static electricity and hydrogen bonds of polymer film to adsorb heavy metal ions to achieve a more stable destination. The concept of complexation is to use a sequestering agent to chelate metal ions and transform it into a more stable water-soluble complex, which then has no catalytic reaction to heavy metals.

Category of hydrogen peroxide stabilizer:

According to structural characteristics, hydrogen peroxide stabilizers can be divided into two categories: silicon-containing oxygen bleaching stabilizers and non-silicone oxygen bleaching stabilizers.

According to the mechanism of action: hydrogen peroxide stabilizers can be divided into: chelating stabilizers, absorbing stabilizers, and absorbing chelating composite stabilizers.

The chelating hydrogen peroxide stabilizer, which is mostly organic acid multivalent complexing agent, can complex with metal ions, and then transform into a more stable water compound without catalytic reaction to heavy metal ions.

Commonly used complexing type hydrogen peroxide stabilizers:

Sodium ethylenediaminetetraacetate, sodium diethylenetriaminepentaacetate, ammonia trimethylene phosphonate, ethylenediamine tetramethylene phosphonate, diethylenetriamine pentamethylene phosphonate, etc. are all amino three Sodium acetate. Gluconic acid, malic acid, etc.

Most of the stabilizers for absorbing hydrogen peroxide are inorganic compounds or polymer organics. Under corresponding circumstances, these substances are in a colloidal state and have strong absorption properties for metal ions, thereby controlling the catalysis of heavy metal ions on hydrogen peroxide. Decomposition function plays a relatively stable performance.

Commonly used absorption type hydrogen peroxide stabilizers:

Silicate, adsorption-type off-molecule compounds (such as acrylic acid, maleic acid, oxamide and other polymers.)

In addition, there is also a hydrogen peroxide mixed stabilizer, which is also a hydrogen peroxide oxygen stabilizer that has both absorption properties and complexation. This type of hydrogen peroxide stabilizer has the advantages of both a water-absorbing stabilizer and a complexing stabilizer.

What are the characteristics of high-quality hydrogen peroxide stabilizers

1. It has good absorption and chelation performance;

2. It can withstand alkali agents with different concentration values;

3. The strong damage to the fiber is low;

4. Possess anti-contamination characteristics;

5. It can effectively control the decomposition rate of hydrogen peroxide and has high efficiency and relatively stable performance;

6. Adopting is not easy to cause fouling of facilities;

7. Better gloss;

8. Easy to degrade.