Effect Of Processing Conditions On Dyeing Properties Of Fabrics

The amount of C12H25NaO4S is right. Dyeing property Influence. Taking blank sample as standard, the effect of different concentration of C12H25NaO4S on dyeing properties of fabrics was tested. It can be seen that when the mass concentration of C12H25NaO4S is greater than 1g/L, with the increase of mass concentration, the color difference E and b value of fabric will increase. When the value is greater than 1. 5g/L, the values of chromatic aberration E and B basically remain unchanged, while the values of chromatic aberration E and B increase rapidly after exceeding 2 5g/L.

This is because the wool is treated by C12H25NaO4S and the surface is negatively ionized. When wool is immersed in Fe2+ solution, it is conducive to the adsorption of Fe2+ on the wool surface. The amount of Fe2+ adsorbed is related to the degree of negative ions on the surface of the wool. When Fenton processes, Fe2+ will eventually be oxidized to Fe3+, and Fe3+ will change the color of the fabric. The reaction of Fenton reagent is related to the concentration of ferrous ions. Therefore, it is possible to increase the utilization rate of ferrous ions by first negative ionization of wool and then by Fenton treatment.

Effect of ferrous ion on dyeing properties. It is the influence curve of ferrous ion mass concentration on the chromatic aberration Delta E and b value before and after dyeing. It can be seen that the change of mass concentration of ferrous ion has a greater effect on the color difference of E before dyeing. When the mass concentration of FeSO4 7H2O is 0. 2g/L, with the increase of mass concentration, the difference of chromatic aberration E and b value of dyed fabric increases significantly. When the concentration is greater than 0. 2g/L, the color difference E and b value basically remain unchanged.

From the change of the chromatic aberration Delta E and b value before dyeing, we can see that the ferrous ion pair Textile The greater the degree of surface impact, the greater the value of the fabric, and the greater the extent of the action of the fabric. It can be seen from the chromatic aberration (E) curve after dyeing that the color difference between the ferrous and the ferrous ions is larger than that of the ferrous ions. In general, wool scales are damaged during the oxidation process, resulting in a decrease in strength. Fig. 7 is a diagram of the influence of different processing methods on the strength of wool fabrics. The strength of wool fabric treated by Fenton reagent and Fenton protease decreased. Compared with blank sample, the strength loss of wool fabric was only 8. 4%, and the relative loss was less than 10%, indicating that the damage caused by Fenton reagent treatment was less. With the increase of ferrous ion mass concentration, the chromatic aberration of dyed fabrics is increasing, but increasing slowly. Therefore, it can be concluded that its mass concentration has little effect on Fenton reaction and can achieve better results under lower mass concentration conditions.

The effect of protease on dyeing properties. The effect of protease dosage on dyeing properties of wool fabrics was observed. It is known that when the protease dosage is greater than 1% (OWF), the values of the chromatic aberration E and B of the dyed fabrics after Fenton protease treatment increase with the increase of the dosage, and the maximum value appears when the enzyme dosage is 3% (OWF), and tends to balance when the protein dosage is greater than 3% (OWF). It may be that the effect of protease on wool scale has basically been completed in this dosage range, or the activity of the enzyme has reached saturation state in the reaction system.

The effect of chelating agents on dyeing properties. It is the influence curve of the mass concentration of chelating agent on the dyeing properties of fabrics. When the chelator mass concentration is greater than 0. 5g/L, with the increase of the chelating agent mass concentration, the color difference E, L and b values of fabric decrease slowly. When the chelating agent was not added, the difference of the chromatic aberration value E, L and B was obviously different from that of the fabric added with chelating agent. This is because chelating agent EDTA can react with various metal ions to form a stable ring structure, effectively reducing the content of metal ions. It can be concluded that adding chelating agent can reduce Fabric chromatic aberration However, its dosage has little effect on the fabric color difference E, L and b value.