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A kind of preparation method of dyeing-free superfine fiber synthetic leather base with high color fastness

A technology with ultra-fine fiber and high color fastness, which is applied in fiber treatment, fiber type, textiles and papermaking, etc. It can solve the problems of poor color fastness of synthetic leather basses, reduce the amount of dyes, make the color full and uniform, and reduce VOC The effect of content

Active Publication Date: 2019-11-01
山东济清科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uses colored water-based polyurethane to impregnate superfine fiber base cloth to prepare dye-free superfine fiber synthetic leather base, so as to solve the problem of poor color fastness of the current ultrafine fiber synthetic leather base, reduce the use of solvents, and improve the cleanliness of the synthetic leather production process degree of

Method used

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  • A kind of preparation method of dyeing-free superfine fiber synthetic leather base with high color fastness
  • A kind of preparation method of dyeing-free superfine fiber synthetic leather base with high color fastness
  • A kind of preparation method of dyeing-free superfine fiber synthetic leather base with high color fastness

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Effect test

Embodiment 1

[0040] A kind of preparation method of dyeing-free superfine fiber synthetic leather base with high color fastness, preparation steps are as follows:

[0041] (1) The sea-island type microfiber base is arranged in the reactor, and then adding a mass fraction of 10% NaOH solution to reduce the weight, the bath ratio of the base cloth and the NaOH solution is 1:10, and the alkali content in the NaOH solution is 5g / L. The reduction reaction temperature is 70°C, and the reduction time is 180 minutes. After the weight reduction is completed, it is fully washed with water and dried at 50° C. to obtain a weight reduction base cloth.

[0042] (2) Wet the weight-reducing base cloth with a small amount of deionized water, and then impregnate the colored water-based polyurethane emulsion (CWPU), so that the CWPU can fully penetrate into the weight-reducing base cloth, and obtain the Beisi sample; the mass ratio of the weight-reducing base cloth to CWPU The ratio is 1:2, the polyurethan...

Embodiment 2

[0046] A kind of preparation method of dyeing-free superfine fiber synthetic leather base with high color fastness, preparation steps are as follows:

[0047] (1) The sea-island type microfiber base is arranged in the reactor, and then adding a mass fraction of 20% NaOH solution to reduce the weight, the bath ratio of the base cloth and the NaOH solution is 1:20, and the alkali content in the NaOH solution is 10g / L. The reduction reaction temperature is 90°C, and the reduction time is 60 minutes. After the weight reduction is completed, it is fully washed with water, and dried at 60° C. to obtain a weight reduction base cloth.

[0048] (2) Wet the weight-reducing base cloth with a small amount of deionized water, and then impregnate the colored water-based polyurethane emulsion (CWPU), so that the CWPU can fully penetrate into the weight-reducing base cloth, and obtain the Beisi sample; the mass ratio of the weight-reducing base cloth to CWPU The ratio is 1:1, the polyuretha...

Embodiment 3

[0052] A kind of preparation method of dyeing-free superfine fiber synthetic leather base with high color fastness, preparation steps are as follows:

[0053] (1) The sea-island type microfiber base is arranged in the reactor, and then adding a mass fraction of 40% NaOH solution to reduce the weight, the bath ratio of the base cloth and the NaOH solution is 1:20, and the alkali content in the NaOH solution is 20g / L. The reduction reaction temperature is 70°C, and the reduction time is 30 minutes. After the weight reduction is completed, it is fully washed with water and dried at 100°C to obtain a weight reduction base cloth.

[0054] (2) Wet the weight-reducing base cloth with a small amount of deionized water, and then impregnate the colored water-based polyurethane emulsion (CWPU), so that the CWPU can fully penetrate into the weight-reducing base cloth, and obtain the Beisi sample; the mass ratio of the weight-reducing base cloth to CWPU The ratio is 1:5, the polyurethane...

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Abstract

The invention relates to a making method of a high-color fastness dye-free ultrafine fiber synthetic leather base. The making method comprises the following steps: base cloth decrement, impregnation in colored aqueous polyurethane, polyurethane solidification and post-treatment. The ultrafine fiber synthetic leather base made in the invention has the advantages of full color, high color fastness and no dyeing. The making method of the ultrafine fiber synthetic leather base has the advantages of small dye use amount in the making process, high dye utilization rate, and no use of toluene, dimethyl formamide or other organic solvents, and is environmentally friendly.

Description

technical field [0001] The invention relates to a preparation method of high color fastness dyeing-free superfine fiber synthetic leather base, which belongs to the technical field of synthetic leather production. Background technique [0002] In recent years, microfiber-polyurethane synthetic leather (MPSL) has developed rapidly and is widely used in sporting goods, household, automotive supplies and other fields. The high-density "sea-island" microfiber endows MPSL with excellent physical and mechanical strength, and the polyurethane with open microporous structure endows MPSL with a leather-like texture, making it an excellent substitute for natural leather; at the same time, MPSL is highly The quality uniformity and higher utilization rate make it a strong competitor to natural leather. [0003] However, the structural characteristics of ultra-fine fibers have caused technical difficulties in dyeing MPSL. On the one hand, its too small fineness leads to fast dye adsorp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14D06M11/38D06M15/564D06M101/32D06M101/34
CPCD06M11/38D06M15/564D06M2101/32D06M2101/34D06N3/0004D06N3/14D06N2209/0823D06N2209/083D06N2209/16D06N2211/28
Inventor 王玉路靳丽强
Owner 山东济清科技服务有限公司
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