Electrostatic self-assembly deepening method for fabric

An electrostatic self-assembly and fabric technology, applied in dyeing, animal fiber, textiles and papermaking, etc., can solve the problems of complex process, reduction, and many steps, and achieve the effect of simple preparation, changing interaction, and easy industrial production

Inactive Publication Date: 2016-04-13
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in recent years, researchers at home and abroad have conducted a lot of research on the problem of fabric darkening, and proposed various darkening methods. In summary, they can be basically divided into three categories: one is the conventional dyeing of inorganic fabrics through coupling agents. Treat the fabric with nanoparticles, change the surface properties of the fabric, reduce the reflection of the surface of the dyed fabric to the incident light and obtain a dark effect, such as: patent CN102816275A discloses a darkening agent for fabrics, the method is to use silicon dioxide particles The silane coupling agent is connected to the polymer, the color development efficiency of the dye is improved, and the color of the dyed fabric is deepened. However, in this patent, there are many steps and complicated processes when preparing the darkening agent.

Method used

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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  • Electrostatic self-assembly deepening method for fabric
  • Electrostatic self-assembly deepening method for fabric
  • Electrostatic self-assembly deepening method for fabric

Examples

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Effect test

preparation example Construction

[0023] (1) Preparation of darkening agent A: weigh polyethyleneimine (PEI), and ultrasonically disperse and dilute it with deionized water to form a PEI aqueous solution with a mass fraction of 0.05%-0.2%;

[0024] (2) Preparation of deepening agent B: use deionized water to make the nano-silica sol solution into an aqueous dispersion with a mass fraction of silicon dioxide of 5%-15%;

[0025] (3) Deepening treatment: process the dyed silk fabric according to the following procedures, first soak it in darkening agent A for 5 minutes, take it out, wash it with deionized water for 2-4 times, each time for 2 minutes, and then immerse it in darkening agent B After soaking for 5 minutes, wash it with pure water for 2-4 times, each time for 2 minutes, so as to complete a cycle of assembly, and repeat the above process to complete the assembly of the film, so as to achieve the effect of deepening the fabric.

Embodiment 1

[0027] First weigh 0.4g of PEI with a purity of 50% with an electronic balance, set the volume to a 100mL volumetric flask, and disperse evenly by ultrasonication for 10 minutes to obtain a 0.2% PEI aqueous solution (deepening agent A) for use.

[0028] Take 50nmSiO 2 15g of sol solution is placed in a beaker, 95g of high-purity water is placed in a separatory funnel, the magnetic stirrer is adjusted to a suitable speed, the rate of dropping of high-purity water in the separatory funnel is controlled at a rate of 1 drop / second, and the concentration of silicon dioxide obtained is 15% SiO 2 Aqueous dispersion (Darkener B).

[0029] Deepening treatment: the dyed silk fabric is treated according to the following procedures, first soaked in PEI aqueous solution for 5 minutes, then taken out, washed with deionized water for 4 times, each time for 2 minutes, and then immersed in SiO 2 After soaking in the water dispersion for 5 minutes, wash with deionized water for 4 times, each ...

Embodiment 2

[0032] Weigh 0.2 g of PEI with a purity of 50% with an electronic balance, set volume to a 100 mL volumetric flask, and disperse evenly by ultrasonication for 10 min to obtain a PEI aqueous solution with a concentration of 0.1% for use.

[0033] First take 100nmSiO 2 Put 10g of sol solution in a beaker, place 92g of high-purity water in a separatory funnel, adjust the magnetic stirrer to a suitable speed, control the dropping rate of high-purity water in the separatory funnel at a rate of 1 drop / second, and prepare a concentration of 10% SiO 2 water dispersion.

[0034] Darkening treatment: The dyed silk fabric is treated according to the following procedures, first soaked in PEI aqueous solution for 5 minutes, then taken out, washed with deionized water for 3 times, each time for 2 minutes, and then immersed in SiO 2After immersing in the water dispersion for 5 minutes, wash with deionized water for 3 times, each time for 2 minutes, so as to complete one cycle of assembly, r...

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Abstract

The invention relates to an electrostatic self-assembly deepening method for a fabric. The method comprises the following steps: (1) preparation of a deepening agent A: weighing polyethylene imine (PEI) and diluting PEI with deionized water through ultrasonic dispersion so as to obtain an aqueous PEI solution with a mass percentage of 0.05 to 0.25%; (2) preparation of a deepening agent B: preparing an aqueous silica dispersion with a mass percentage of 5 to 20% from a nanometer silica sol solution by using deionized water; and (3) color deepening: treating a dyed silk fabric by impregnating the dyed silk fabric in the deepening agent A, then taking the impregnated silk fabric out, cleaning the impregnated silk fabric with deionized water twice to five times, then impregnating the silk fabric in the deepening agent B, and after completion of impregnation, cleaning the silk fabric with deionized water twice to five times, thereby finishing one cycle of assembly. The method provided by the invention employs electrostatic self-assembly technology to construct polymer-based nanometer film structures on different fabrics so as to exert deepening effect on the fabrics.

Description

technical field [0001] The invention relates to the field of textile deepening, in particular to an electrostatic self-assembly deepening method for fabrics. Background technique [0002] Improving the color depth and vividness of textiles is one of the research hotspots in the field of printing and dyeing. Usually, when the amount of dye in the dye bath reaches a certain amount, it is difficult to significantly increase the dyeing depth whether it is to extend the dyeing time, increase the dyeing temperature, or increase the amount of dye. Especially for dark colors such as black and navy blue, it is often difficult to meet the user's requirements in depth. Even if a high concentration of dye is used, the enhancement is very limited. Moreover, the application of high-concentration dyes will greatly increase the amount of residual dyes in the dye bath, causing environmental pollution. If the color of the fabric is deepened without increasing the amount of dye, not only can...

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 Applications(China)
IPC IPC(8): D06M11/79D06M15/61D06P5/08D06P5/02D06M101/10
CPCD06M11/79D06M15/61D06P5/02D06P5/08D06M2101/10
Inventor 邵建中庄广清平伟张云周岚
Owner ZHEJIANG SCI-TECH UNIV
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