Color-fixing method of natural colored silk

A colored silk and natural technology, which is applied in the field of color-fixing and value-added natural colored silk products, can solve the problems of fabric yellowing, toxicity, environmental protection and safety of colored silk, and achieve soft and bright colors, consistent colors, and resistance to scouring And the effect of strong washing resistance

Active Publication Date: 2018-05-08
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stiffness and acid and alkali resistance of silk after color fixation with aldehydes are improved, but this method has obvious disadvantages: color fixation will cause yellowing of the fabric, and aldehydes have certain toxicity, which affects the environmental protection of colored silk sex and security
But there is no report on its application as a color-fixing agent

Method used

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  • Color-fixing method of natural colored silk
  • Color-fixing method of natural colored silk
  • Color-fixing method of natural colored silk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, a kind of fixing method of natural colored silk, carries out following steps successively:

[0036] 1), preparation of fixation solution

[0037] Prepare a THPS solution with a concentration of 0.1 g / L, adjust the pH to 11.7 with a sodium hydroxide solution with a concentration of 0.1 mol / L, and heat the color-fixing solution to 75°C.

[0038] 2), solid color

[0039] Immerse the natural colored silk in the color-fixing solution at 75°C for 60 seconds at a bath ratio of 1:30 (mass-volume ratio, kg / L), take it out, then cool it for 20 hours, wash it thoroughly with clean water, and dry it at 70°C After 10 minutes, the solid color silk was obtained.

[0040] Experiment 1,

[0041] 1), scouring treatment

[0042] Unfixed and color-fixed colored silk (obtained in Example 1 above) is scoured in 0.2g / L sodium carbonate solution at 100°C for 0.5 hours at a bath ratio of 1:30 (mass volume ratio, kg / L) , take it out and wash it thoroughly with water and then d...

Embodiment 2

[0055] Prepare a THPS solution with a concentration of 50g / L and use a sodium hydroxide solution with a concentration of 2mol / L to adjust the pH to 5, with a bath ratio of 1:30 (kg / L), soak it at 7°C for 30 seconds, take it out, and place it in a cold stack for 36 Hour. Afterwards, fully wash with clear water, and bake at 100° C. for 1 minute to obtain solid-color dyed silk. Other steps are the same as in Example 1.

[0056] Then, the test was carried out as in Experiment 1, and the analysis results were as follows:

[0057] Table 3 shows the color difference between fixed and unfixed colored silk after scouring, and Table 4 shows the color difference between fixed and unfixed colored silk after 10 times of washing. Compared with fixed color silk, the degree of fading after scouring / washing treatment is significantly reduced, and a better color fixing effect is achieved. At the same time, repeated (at least 3) experiments were carried out in this experiment, and similar resu...

Embodiment 3

[0066] Prepare a THPS solution with a concentration of 450g / L and adjust the pH to 2.5 with a sodium hydroxide solution with a concentration of 0.5mol / L, with a bath ratio of 1:30 (kg / L), soak at 20°C for 1 second, and then place it in a cold stack for 5 hours . Afterwards, rinse thoroughly with clean water, and bake at 120°C for 30 seconds to obtain solid-color colored silk. Other steps are with embodiment 1.

[0067] Then, the test was carried out as in Experiment 1, and the analysis results were as follows:

[0068] Table 5 shows the color difference of fixed and unfixed silk after scouring, and Table 6 shows the color difference of fixed and unfixed silk after 10 times of washing. Under the above conditions, THPS can reach a certain level. color fixing effect. At the same time, repeated (at least 3) experiments were carried out in this experiment, and similar results can be obtained.

[0069] Table 5. Color difference between fixed and unfixed silk after scouring

[0...

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Abstract

The invention discloses a color fixation method for natural colored silk. The method comprises the following steps that water is added to tetrakis hydroxymethyl phosphonium sulfate serving as a cross-linking agent to be prepared into an aqueous solution, the pH is adjusted with a NaOH solution with the concentration of 0.1 mol / L to 2.0 mol / L, and then heating is carried out to form a treatment solution; the natural colored silk is put in the treatment solution to be subjected to heat preservation and dipping for 1-60 seconds, and after natural colored silk is taken out, the natural colored silk is cooled and stacked to fully react to achieve color fixation; or, the natural colored silk is directly placed in the treatment solution for heat preservation soaking to achieve color fixation; the natural colored silk obtained after color fixation is washed with clear water and dried, and the color-fixed colored silk is obtained.

Description

technical field [0001] The invention belongs to the field of post-processing of silk, and relates to a method for color-fixing and value-added of natural colored silk products. Background technique [0002] At present, all kinds of colorful silk products on the market are mostly obtained from white cocoons after boiling, reeling, weaving, and then refining, dyeing, printing and other post-processing processes. Although these silks are rich in color and stable in color, some chemical dyes used will pollute the environment and affect the comfort of wearing, which is not in line with the concept of green environmental protection. The pigment of natural colored silk comes from the bio-pigment synthesized in the silkworm body. It is non-toxic and harmless, and the color is soft and bright. Its fabric does not need to be dyed, which avoids the pollution caused by printing and dyeing. [0003] Colored silkworm eggs are a type of silkworm eggs other than the common white silkworm e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P5/04
CPCD06P5/04
Inventor 周文龙李洁马明波唐志荣
Owner ZHEJIANG SCI-TECH UNIV
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