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Method for improving dyeing property of natural plant dye

A technology of natural vegetable dyes and dyeing performance, applied in the field of new material processing, can solve the problems of affecting the original color of dyes, large pollution, etc., and achieve the effect of improving comprehensive utilization rate, dyeing strength and dyeing performance

Inactive Publication Date: 2020-03-27
安徽融创化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are problems such as large pollution and affecting the original color of the dye

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method for improving the dyeing performance of natural vegetable dyes, using sorghum red natural vegetable dyes to dye cotton fabrics, specifically comprising the following steps:

[0014] Step 1: Prepare natural plant dye solution: disperse and dilute sorghum red natural plant dye 160 times with water, then add dyeing auxiliaries with a mass fraction of 0.04% to the dye dilution solution, at 26°C, at a speed of 550 rpm Stir for 30 minutes to obtain a uniform dye solution and then dye the fabric;

[0015] Step 2: Dyeing process: After dyeing, heat up at a rate of 1.0°C / min, then heat up to 45°C with a bath ratio of 1:50, keep dyeing for 20 minutes, wash and dry;

[0016] The present invention also provides the preparation technology of dyeing auxiliary agent as:

[0017] S1: Use a nitric acid solution with a molar concentration of 4.5 mol / liter, add magnesium oxide to prepare an aqueous magnesium nitrate solution with a molar concentration of 0.8 mol / liter, measure 1...

Embodiment 2

[0020] A method for improving the dyeing performance of natural plant dyes, using gardenia yellow natural plant dyes to dye cotton fabrics, specifically comprising the following steps:

[0021] Step 1: Prepare natural plant dye solution: disperse and dilute gardenia yellow natural plant dye 135 times with water, then add dyeing auxiliaries with a mass fraction of 0.045% to the dye dilution solution, at 28°C, at 580 rpm Stir at a rotating speed for 35 minutes to obtain a uniform dye solution and then dye the fabric;

[0022] Step 2: Dyeing process: After dyeing, heat up at a rate of 1.1°C / min, then heat up to 45°C with a liquor ratio of 1:50, keep warm for 22 minutes, then wash and dry;

[0023] The present invention also provides the preparation technology of dyeing auxiliary agent as:

[0024] S1: Use a nitric acid solution with a molar concentration of 4.6 mol / liter, add magnesium oxide to prepare an aqueous magnesium nitrate solution with a molar concentration of 0.85 mol / ...

Embodiment 3

[0027] A method for improving the dyeing performance of natural vegetable dyes, using annatto natural vegetable dyes to dye cotton fabrics, specifically comprising the following steps:

[0028] Step 1: Prepare natural plant dye solution: disperse and dilute annatto natural plant dye 120 times with water, then add dyeing auxiliaries with a mass fraction of 0.05% to the dye dilution solution, at 30°C, at 600 rpm Stir at a rotating speed for 40 minutes to obtain a uniform dyeing solution and then dye the fabric;

[0029] Step 2: Dyeing process: After dyeing, heat up at a rate of 1.2°C / min, and heat up to 50°C with a bath ratio of 1:50. Keep dyeing for 25 minutes, then wash and dry;

[0030] The present invention also provides the preparation technology of dyeing auxiliary agent as:

[0031] S1: Use a nitric acid solution with a molar concentration of 4.7 mol / liter, add magnesium oxide to prepare an aqueous magnesium nitrate solution with a molar concentration of 0.9 mol / liter, m...

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Abstract

The invention relates to the technical field of new material processing, and discloses a method for improving a dyeing property of a natural plant dye. A dyeing auxiliary is added into the natural plant dye, and a physical treatment means is supplemented, so that a mixed dye is obtained through uniformly dispersing so as to be used for dyeing; the prepared auxiliary is beneficial to driving dye molecules to enter a textile material fiber crystalline region, so that penetration dyeing is facilitated, the dyeing rate can be accelerated, a repulsive force between electric charges is reduced, thedye molecules are combined onto a fabric to be dyed through a bonding way, the dyeing degree and various color fastness are improved, and the color fading problem brought by hot and humid conditions,illumination and the like can be solved; and the process can well overcome the defects occurred during existing natural plant dye dyeing, the dyeing strength of the prepared natural plant dye is remarkably improved, and the comprehensive utilization rate of the natural plant dye is improved, so that the cost is saved, and the color degree, the washability and the sunproofness of the natural plantdye are improved.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a method for improving the dyeing performance of natural vegetable dyes. Background technique [0002] With the emphasis on environmental protection, great changes have taken place in the dye industry, and renewable and degradable natural dyes are welcomed by people. Natural dyes generally come from plants, animals and minerals, with vegetable dyes as the main ones. Vegetable dyes are extracted from the roots, stems, leaves and fruits of plants. Such as: indigo, madder, comfrey, safflower, mulberry, tea, etc. The number of animal dyes is small, mainly from shellfish and cochineals, such as: insect (purple) glue, cochineal red, carmine and so on. Mineral dyes are colored inorganic substances extracted from minerals, such as chrome yellow, ultramarine blue, magnesium brown, etc. In recent years, it has been found that pigments produced by microorgani...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P1/651D06P1/66D06P1/673
CPCD06P1/34D06P1/65125D06P1/66D06P1/6735
Inventor 张建威代余容钟鹏飞胡梦刚
Owner 安徽融创化工科技股份有限公司
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