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Preparation method of indigotic dyeing antibacterial textile

A technology of antibacterial textiles and textiles, applied in the field of textiles, can solve the problems that fibers have no affinity and are not in line with ecological environmental protection, etc., and achieve the effect of increasing the adhesion.

Active Publication Date: 2020-01-07
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since indigo is a non-water-soluble vat dye and has no affinity for fibers, it needs to be reduced to its leuco-salt sodium salt before dyeing fibers; traditional dyeing often uses sodium hydrochloride as a reducing agent, which does not meet the requirements of ecological and environmental protection

Method used

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  • Preparation method of indigotic dyeing antibacterial textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Prepare a natural indigo dye aqueous solution with a mass fraction of 1%, and then add polyvinylpyrrolidone accounting for 20% of the mass of natural indigo dye. After it is completely dissolved, use a mechanical mixer to stir at a speed of 400r / min for 25min to obtain a pre-dispersion; A titanium alloy ultrasonic probe with a tip diameter of 15 mm was inserted into the pre-dispersion liquid, and ultrasonically dispersed for 20 min at a power of 100 W to obtain a natural indigo dye suspension solution;

[0022] (2) Immerse the desizing, scouring and bleaching pure cotton fabric in the natural indigo dye suspension solution, roll it after 30 seconds, double dipping and two rolling, the excess rate is 80%, and dry at 60°C for 10 minutes. Padding the copper acetate aqueous solution with a mass concentration of 8g / L, two dipping and two rolling, the excess rate is 80%, vacuum drying at 60°C, and ready for use;

[0023] (3) In an autoclave with polytetrafluoroethylene, p...

Embodiment 2

[0041] (1) Prepare a natural indigo dye aqueous solution with a mass fraction of 5%, and then add polyvinylpyrrolidone accounting for 30% of the mass of natural indigo dye. After it is completely dissolved, use a mechanical mixer to stir at a speed of 600r / min for 15 minutes to obtain a pre-dispersion; A titanium alloy ultrasonic probe with a tip diameter of 15 mm was inserted into the pre-dispersion liquid, and ultrasonically dispersed for 10 min at a power of 200 W to obtain a natural indigo dye suspension solution;

[0042] (2) Immerse the desizing, scouring and bleaching hemp fabric into the natural indigo dye suspension solution, roll it after 30 seconds, double dipping and two rolling, the excess rate is 100%, dry at 80°C for 5 minutes, dip Roll the copper sulfate aqueous solution with a mass concentration of 16g / L, two dips and two rolls, the excess rate is 100%, vacuum dry at 80°C, and set aside;

[0043] (3) In an autoclave with polytetrafluoroethylene, prepare a mixe...

Embodiment 3

[0045] (1) Prepare a natural indigo dye aqueous solution with a mass fraction of 2.5%, and then add polyvinylpyrrolidone accounting for 25% of the mass of natural indigo dye. After it is completely dissolved, use a mechanical mixer to stir at a speed of 500r / min for 20min to obtain a pre-dispersion; A titanium alloy ultrasonic probe with a tip diameter of 15 mm was inserted into the pre-dispersion liquid, and ultrasonically dispersed for 15 min at a power of 150 W to obtain a natural indigo dye suspension solution;

[0046] (2) Immerse the viscose fabric that has been desized, scoured and bleached into the natural indigo dye suspension solution, and roll it after 30 seconds, double dipping and two rolling, the excess rate is 90%, and after drying at 70°C for 8 minutes, Padding the copper nitrate aqueous solution with a mass concentration of 12g / L, two dips and two rollings, the excess rate is 90%, vacuum drying at 70°C, and ready for use;

[0047] (3) In an autoclave with poly...

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Abstract

The invention provides a preparation method of an indigotic dyeing antibacterial textile. According to the method, natural indigos are super-thinned by an ultrasonic crushing mode, the textile is padded by a super-thin natural indigotic dye suspension solution and rolled by copper salt solution, and dyeing of indigotic dyes and in-situ formation of cuprous oxide on a fabric are achieved by a one-step hydrothermal method. Polyvinylpyrrolidone in the suspension solution serves as dispersing agents of the indigotic dyes, the complexing action between the polyvinylpyrrolidone and Cu<2+> is formedwhen the copper salt solution is padded, and glucose serves as reducing agents of the natural indigotic dyes and also serves as reducing agents for converting Cu<2+> into Cu<+> in the hydrothermal reaction process. The textile prepared by the method is deep in color, good in color fastness and washing fastness and high in antibacterial activity.

Description

technical field [0001] The invention belongs to the technical field of textiles, in particular to a preparation method of indigo-dyed antibacterial textiles. Background technique [0002] Natural indigo is extracted from the leaves of indole-containing plants such as indigo indigo, woad indigo, wood indigo, and horse indigo. It has a history of more than 3,000 years of use in my country. Natural indigo has certain medicinal value and can be used for the treatment of mumps, myeloma and leukemia. Textiles dyed with natural indigo are not only soft in color, but also have a unique health care effect on the human body, and have been widely favored by people in recent years. [0003] Since indigo is a non-water-soluble vat dye and has no affinity for fibers, it needs to be reduced to its leuco sodium salt before dyeing fibers; traditional dyeing often uses hydrosulfite as a reducing agent, which does not meet the requirements of ecological protection. In addition, indigo has a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P1/22D06P1/52D06P3/60D06P5/04D06P5/10
CPCD06P1/34D06P1/228D06P1/5242D06P3/6025D06P5/04D06P5/10
Inventor 彭勇刚汪媛黎珊陶永新纪俊玲
Owner CHANGZHOU UNIV
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