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Reactive Dyeing Salt-free Dyeing Method of Calcium Alginate Fiber

A calcium alginate fiber and reactive dye technology, which is applied in the field of fiber dyeing, can solve problems such as high price of auxiliary agents, difficulty in preparing new dyes, and restrictions on the development of calcium alginate fiber dyeing and finishing processes

Active Publication Date: 2021-02-09
SHANDONG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the above-mentioned dyeing process of calcium alginate fiber has made a beneficial attempt, there are still many problems restricting the dyeing of calcium alginate fiber.
For example, the process of fiber modification is complicated, and the price of the auxiliaries used is relatively high; dope dyeing cannot meet the needs of the market for fiber color, brightness and printing; when dyeing with traditional dyes, due to the small number of dyes that can be used, Added inorganic salts will lead to a decrease in fiber strength and cannot meet the needs of dyeing and finishing; although special dyes and dyeing techniques can improve the dyeing performance of fibers, there are still certain difficulties in the preparation of new dyes, etc.
The above factors all restrict the development of calcium alginate fiber dyeing and finishing process

Method used

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  • Reactive Dyeing Salt-free Dyeing Method of Calcium Alginate Fiber
  • Reactive Dyeing Salt-free Dyeing Method of Calcium Alginate Fiber
  • Reactive Dyeing Salt-free Dyeing Method of Calcium Alginate Fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Prepare 1L of calcium alginate fiber pretreatment solution with low molecular weight polyvinylamine (n≈20-30), wherein the content of polyvinylamine is 5g / L, and use 10wt.% dilute ammonia water to adjust the pH of the pretreatment solution When the value is 8, add 100g of calcium alginate fibers and raise the temperature to 30°C, shake and stir for 30 minutes, then take out the fibers and wash them with cold water.

[0031] (2) The reactive red X-3B dye is used to prepare the dyeing solution, the chroma is 2wt.%, and the liquor ratio is 1:20; the pretreated calcium alginate fiber is added to the dyeing solution, and the temperature is raised to 40°C , constant temperature dyeing treatment for 50 minutes; take out the dyed fiber and put it into 0.5wt.% soap solution for soaping for 10 minutes, wash with water, and dry in the air.

Embodiment 2

[0033] (1) Prepare 1L of calcium alginate fiber pretreatment solution with low molecular weight polyvinylamine (n≈60-70), wherein the content of polyvinylamine is 3g / L, and adjust the pH value of the pretreatment solution with 10wt.% dilute ammonia water For 8, add 100g of calcium alginate fibers and raise the temperature to 30°C, shake and stir for 40 minutes, then take out the fibers and wash them with cold water.

[0034] (2) Use reactive yellow X-BR dye to configure the dyeing solution, the chroma is 1wt.%, and the bath ratio is 1:15; add the pretreated calcium alginate fiber to the dyeing solution, and raise the temperature to 40°C , constant temperature dyeing treatment for 60 minutes; take out the dyed fiber and put it into 0.5wt.% soap solution for soaping for 10 minutes, wash with water, and dry in the air.

Embodiment 3

[0036](1) Prepare 1L of calcium alginate fiber pretreatment solution with low molecular weight polyvinylamine (n≈100-120), wherein the content of polyvinylamine is 8g / L, and adjust the pH value of the pretreatment solution with 10wt.% dilute ammonia water For 9, add 100g of calcium alginate fibers and raise the temperature to 30°C, shake and stir for 50 minutes, then take out the fibers and wash them with cold water.

[0037] (2) Use reactive blue M-G dyes to configure the dyeing solution, the chroma is 3wt.%, and the liquor ratio is 1:30; add the pretreated calcium alginate fiber into the dyeing solution, and raise the temperature to 60°C, Constant temperature dyeing treatment for 60 minutes; take out the dyed fiber and put it into 0.5wt.% soap solution to soap and boil for 10 minutes, wash with water and dry in the air.

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Abstract

The invention belongs to the technical field of fiber dyeing, and in particular relates to a salt-free dyeing method of calcium alginate fiber with reactive dyes. The method is to first prepare polyvinylamine aqueous solution, adjust the pH value, add calcium alginate fiber, heat up and stir, and obtain pretreated calcium alginate fiber after washing; Add reactive dyes to the dye solution, heat up and stir, take out the dyed calcium alginate fibers, boil with soap, wash with water, and dry in the air. The polyvinylamine salt-free dyeing auxiliaries contain a large number of primary amine groups, and the positions of the primary amine groups are very close, which can chelate with the calcium ions inside the calcium alginate fiber, so that the polyvinylamine has a high The molecular chain can penetrate into the interior of the fiber and be firmly fixed in the calcium alginate fiber. The dyed calcium alginate fiber of the present invention has high dye uptake rate, good fastness and less fiber strength damage.

Description

technical field [0001] The invention belongs to the technical field of fiber dyeing, and in particular relates to a salt-free dyeing method of calcium alginate fiber with reactive dyes. Background technique [0002] Calcium alginate fiber is a new type of biodegradable synthetic fiber. This type of fiber not only has the characteristics of hygroscopicity, softness, heat preservation and biocompatibility of traditional natural fibers, but also has excellent resistance due to its special structure and preparation process. Combustible, antistatic and antibacterial properties, so it has a very wide range of industrial application prospects. [0003] Calcium alginate fibers are mainly used in non-clothing fields such as medical dressings and masks, mainly because such fibers are difficult to dye and finish. Calcium alginate fiber is prepared by ion exchange between calcium ions in calcium chloride coagulation solution and sodium ions in sodium alginate. Traditional dyeing and f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/38D06P1/52D06P3/58
CPCD06P1/38D06P1/5242D06P3/58
Inventor 黄昊飞曹娣李赵义傅忠君姜兆辉纪全夏延致
Owner SHANDONG UNIV OF TECH