Reactive dyes dyeing method of beam shaped superfine fiber PU synthetic leather

A technology of ultra-fine fiber and reactive dyes, applied in the field of dyeing, can solve the problems of poor color fastness, large specific surface area, poor color rendering, etc., and achieve an environmentally friendly effect

Inactive Publication Date: 2010-06-23
HUAFON MICROFIBER SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ultra-fine nylon 6 fiber is much thinner than ordinary fiber and has a larger specific surface area, so there are a series of problems in dyeing, such as too fast dyeing rate, poor color rendering and poor color fastness, etc.

Method used

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  • Reactive dyes dyeing method of beam shaped superfine fiber PU synthetic leather
  • Reactive dyes dyeing method of beam shaped superfine fiber PU synthetic leather
  • Reactive dyes dyeing method of beam shaped superfine fiber PU synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Use reactive dye A for wool at 2%-5% (owf), bath ratio 1:15-30, pH 3-7, heat up from room temperature to 90-120°C at a rate of 1°C / min, keep warm for 10 or 20 or 30 or 40 Or 50 or 60 or 70 minutes, 1 ~ 3 ° C / min to 20-60 ° C, then adjust the pH3 ~ 9 at 20-70 ° C for 20 ~ 60 minutes to fix the color, dyeing bundles of microfiber PU synthetic leather.

Embodiment 2

[0021] Use reactive dye A for wool at 2%-5% (owf), bath ratio 1:15-30, pH 3-7, heat up from room temperature to 90-120°C at a rate of 1°C / min, keep warm for 60min, and heat at 1-3°C / min down to 20 ~ 60 ℃, dyeing bundles of microfiber PU synthetic leather.

Embodiment 3

[0023] Use reactive dye A for wool at 2%-5% (owf), bath ratio 1:15-30, pH value is 3-7 respectively, heat up from room temperature to 90-120°C at a speed of 1°C / min, keep warm for 60min, and 1-3°C / min to 20-60°C, then adjust the pH to 3-9 at 20-70°C for 20, 30, 40, 50, and 60 minutes of color fixation, and dye bundle-shaped microfiber PU synthetic leather.

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Abstract

The invention relates to a reactive dyes dyeing method of a beam shaped superfine fiber PU synthetic leather, which is realized through the following technical proposals: in the proportion of 2 percent to 5 percent (owf), at the bath ratio of 1 : 15 to 30, the PH valve is 3 to 7, wool reactive dyes A is heated to 90 to 120 Degrees Celsius from the room temperature at the speed of 0.3-2Degrees Celsius/min, then the temperature is preserved 10 to 70 min, then the temperature is decreased to 20 to 60 Degrees Celsius at the speed of 1 to 3 Degrees Celsius/min. Then the PH valve is adjusted to 3 to 9 and the color is fixed for 20 to 60 min at the temperature of 20 to 70 Degrees Celsius, at last the beam shaped superfine fiber PU synthetic leather is dyed. The invention has the beneficial effects: compared with the traditional dyeing method which uses acid dyes and neutral dyes, the dyeing depth, the color uniformity as well as the dry rubbing fastness of the wool reactive dyes dyeing of the beam shaped superfine fiber PU synthetic leather are almost the same, the wet rubbing fastness is higher about 1 to 2 grades, the dyeing waste water does not contain heavy metal ions, thereby the invention is environment-friendly.

Description

technical field [0001] The invention relates to a dyeing method, in particular to a method for dyeing bundled superfine fiber PU synthetic leather with reactive dyes. Background technique [0002] Beamed microfiber PU synthetic leather is the third generation of artificial leather after PVC and PU. It is a high-density non-woven fabric with a three-dimensional network structure made of nylon 6 ultra-fine fibers similar in structure and performance to bundled collagen fibers in natural leather, and has excellent refilling performance and polyurethane with an open microporous structure. made after post-processing. This synthetic leather has the inherent hygroscopicity of natural leather with bundled ultrafine collagen fibers. Therefore, it is comparable to high-grade natural leather in terms of internal microstructure, appearance texture, physical properties and wearing comfort. In addition, microfiber synthetic leather is superior to natural leather in terms of chemical re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/85D06P1/38
Inventor 胡忠杰于晓成
Owner HUAFON MICROFIBER SHANGHAI
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