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Processing method for improving natural colored cotton color depth and colour and luster stability

A technology of natural colored cotton and processing method, applied in textiles and papermaking, fiber processing, plant fibers, etc., can solve the problems of changing the color of natural colored cotton products, no practical application, difficult industrial application, etc. The effect of high degree of improvement, low cost and low processing cost

Active Publication Date: 2019-05-07
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have obvious defects and have not seen practical application
For example, the complexation of metal ions will significantly change the color of natural colored cotton products. The petroleum ether reflux method is limited to laboratory processing and is difficult to apply in industrial applications.

Method used

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  • Processing method for improving natural colored cotton color depth and colour and luster stability
  • Processing method for improving natural colored cotton color depth and colour and luster stability
  • Processing method for improving natural colored cotton color depth and colour and luster stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, a kind of processing method that improves natural colored cotton color depth and color stability, carries out following steps successively:

[0021] 1) Pre-dry the natural colored cotton at 100°C until the moisture regain of the natural colored cotton is 4.2%.

[0022] Soak the dried natural colored cotton in liquid ammonia for 45 minutes.

[0023] 2), immerse the natural colored cotton after liquid ammonia treatment in the treatment liquid of 45 ℃, after dipping for about 5 seconds, remove excess treatment liquid, the liquid rate of the natural colored cotton after padding is 80% (mass %), and then Wind the natural colored cotton after padding into a tube and place it in a cold stack for 12 hours; obtain the natural colored cotton after color fixing treatment;

[0024] Mix gelatin, osmotic agent and water to form a protein solution, the mass concentration of gelatin in the protein solution is 1.8%, and the mass concentration of osmotic agent is 0.8%; the...

Embodiment 2

[0029] Embodiment 2, a kind of processing method that improves natural colored cotton color depth and color stability, carries out following steps successively:

[0030] 1) Pre-dry the natural colored cotton at 40°C until the moisture regain of the natural colored cotton is 13.3%.

[0031] Soak the dried natural colored cotton in liquid ammonia for 120 minutes.

[0032] 2), soak the natural colored cotton after liquid ammonia treatment in the treatment solution at 65°C, and remove the excess treatment solution after dipping for about 5 seconds. The liquid rate of the natural colored cotton after padding is 35%, and then the The natural colored cotton is wound into a tube and placed in a cold pile for 3.5 hours; the natural colored cotton after color fixing treatment is obtained;

[0033] Mix gelatin, penetrant and water to form a protein solution. The mass concentration of gelatin in the protein solution is 0.18%, and the mass concentration of the penetrant is 1.5%. Then use ...

Embodiment 3

[0038] Embodiment 3, a kind of processing method that improves natural colored cotton color depth and color stability, carries out following steps successively:

[0039] 1) Pre-dry the natural colored cotton at 100°C until the moisture regain of the natural colored cotton is 9.5%.

[0040] Soak the dried natural colored cotton in liquid ammonia for 600 minutes.

[0041] 2), soak the natural colored cotton after the liquid ammonia treatment in the treatment solution at 45°C, and remove the excess treatment solution after dipping for about 5 seconds. The liquid rate of the natural colored cotton after padding is 100%. The natural colored cotton is wound into a tube and placed in a cold pile for 36 hours; the natural colored cotton after color fixing treatment is obtained;

[0042] Mix gelatin, osmotic agent and water to form a protein solution. The mass concentration of gelatin in the protein solution is 8.5%, and the mass concentration of osmotic agent is 3.5%. Then use sulfur...

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Abstract

The invention discloses a processing method for improving the natural colored cotton color depth and colour and luster stability. The method comprises the steps that natural colored cotton obtained after color fixing is washed and dried; the natural colored cotton is dried, then the natural colored cotton obtained after drying is subjected to liquid ammonia treatment, and the natural colored cotton after liquid ammonia treatment is obtained; gelatin, penetrant and water are mixed to form a protein solution, then the protein solution is adjusted to reach the pH being 2.0-7.0, and a treatment solution is obtained; the natural colored cotton obtained after liquid ammonia treatment is put in the treatment solution for padding at 15-70 DEG C, so that the liquid-carrying rate of natural coloredcotton obtained after padding is 30-150%, and then cold reactor placement is conducted; the natural colored cotton after fixing treatment is obtained. By means of the method, the color of the naturalcolored cotton can become brighter, and the color is obviously deepened and become more uniform; the color fastness to washing and sunshine can be effectively improved.

Description

technical field [0001] The invention relates to a method for improving the color depth and color stability of natural colored cotton products in the field of natural colored cotton production and processing. Background technique [0002] my country is the largest natural colored cotton planting and producing country in the world. The production of colored cotton accounts for more than 60% of the world's total output of colored cotton for a long time. The production and processing of colored cotton in my country occupies an important position in the world. Green environmental protection is the symbolic feature of natural colored cotton. The production and processing of colored cotton produces less pollution, and its products do not need to be dyed. The product has obvious advantages in health and environmental protection. Under the background of upgrading the global textile industry and increasing added value, the natural colored cotton industry has obviously become an import...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/61D06M15/15D06M101/06
Inventor 马明波周文龙唐志荣刘海峰
Owner ZHEJIANG SCI-TECH UNIV
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