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Strong hydrophobic silk fabric and preparation method thereof

A water-based silk and fabric technology, applied in the field of strong hydrophobic silk fabrics and its preparation, can solve the problems that the hydrophobic strength cannot meet the market demand, the degree of fiber damage is large, and harmful substances are easy to remain, so as to reduce the surface energy of the fiber and increase the added value , the effect of alleviating environmental pressure

Inactive Publication Date: 2020-11-17
JIANGSU HUAJIA SILK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional physical / chemical modification methods have defects such as high process requirements, large fiber damage, and easy residue of harmful substances to a certain extent, and the hydrophobic strength cannot meet the growing market demand.

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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  • Strong hydrophobic silk fabric and preparation method thereof
  • Strong hydrophobic silk fabric and preparation method thereof
  • Strong hydrophobic silk fabric and preparation method thereof

Examples

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Effect test

preparation example Construction

[0031] A preparation method of strong hydrophobic silk fabric, comprising the following steps:

[0032] Preheat the grafting system at 30-60°C for 10-15 minutes, keep the temperature, then add the pretreated silk fabric according to the bath ratio of 1:50, grafting reaction for 2-6 hours, wash with cold water and warm water in turn, and dry dry and extract to obtain the strong hydrophobic silk fabric;

[0033] The grafting system includes laccase, acetic acid buffer solution of pH 4-5, lauryl gallate, ethanol, reaction medium, catalytic mediator and copper salt, and is prepared by the following steps:

[0034] 1) mixing laccase with acetate buffer to prepare a laccase solution;

[0035] 2) dissolving lauryl gallate in ethanol to obtain a monomer solution;

[0036] 3) Mix the laccase solution, the monomer solution, the reaction medium, the catalytic mediator and the copper salt evenly to obtain the graft system.

[0037] The pretreatment of the above-mentioned real silk fabr...

Embodiment 1

[0047] A preparation method of strong hydrophobic silk fabric, comprising the following steps:

[0048] (1) Silk fabric pretreatment:

[0049] Prepare the soaping solution according to the soap flakes 2g / l, heat the prepared soaping solution on the induction cooker to 60°C, put it into silk electric spinning according to the bath ratio of 1:50, wash and dry it after soaping for 30 minutes, and then put it in Equilibrate in a desiccator for 24 hours before use.

[0050] (2) Preparation of grafting system:

[0051]The grafting system in the present embodiment comprises 2U / ml laccase, the acetate buffer of pH 4, 12mM lauryl gallate, ethanol, reaction medium, 0.15M DMP and 15mM copper sulfate; Wherein, reaction medium comprises 0.2M acetic acid- Sodium acetate and ethanol, the volume ratio of acetic acid-sodium acetate and ethanol is 4:1, is prepared by the following steps:

[0052] 1) mixing the above-mentioned laccase with an acetate buffer to prepare a laccase solution;

[...

Embodiment 2

[0060] A preparation method of a strong hydrophobic silk fabric, except for the grafting system and the modification time, the rest of the steps are the same as in Example 1.

[0061] The grafting system of the present embodiment comprises: 1U / ml laccase, the acetate buffer of pH 3.5, 10mM lauryl gallate, ethanol and reaction medium; Wherein, the reaction medium comprises 0.2M acetic acid-sodium acetate and ethanol, acetic acid- The volume ratio of sodium acetate and ethanol is 4:1.

[0062] The modification time of this embodiment is 1h, 2h, 3h, 4h, 5h, 6h.

[0063] Calculate the grafting rate under the different modification time of present embodiment, the calculating formula of grafting rate is as follows:

[0064]

[0065] It can be obtained by calculation that the optimal reaction time of the laccase enzymatically grafted silk in this example is 5 hours.

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Abstract

The invention discloses a preparation method of a strong hydrophobic silk fabric.A specifically designed grafting system comprising laccase, an acetic acid buffer solution with the pH value of 4-5, lauryl gallate, ethanol, a reaction medium, a catalytic mediator and a copper salt is adopted. The preparation method comprises the following steps: preheating the grafting system at the temperature of30-60 DEG C for 10-15 minutes, keeping the temperature, adding the pretreated silk fabric according to the bath ratio of 1: 50, carrying out a reaction for 2-6 hours, sequentially carrying out cleaning with cold water and warm water, drying and extracting, and thus obtaining the strong hydrophobic silk fabric. The method is simple and mild in reaction, high in catalytic activity, high in graftingspeed and high in monomer grafting rate, and the hydrophobic property of the silk fabric produced by the method is remarkably improved. The invention also discloses the strong hydrophobic silk fabricproduced by the method, and the silk fabric is low in silk fiber surface energy, strong in hydrophobic property and lasting in hydrophobic effect.

Description

technical field [0001] The invention relates to the technical field of silk fabrics, in particular to a strong hydrophobic silk fabric and a preparation method thereof. Background technique [0002] As an ecological and non-polluting natural protein fiber, silk has many advantages such as moisture absorption, breathability, softness and elegance, and has been popular in the field of clothing for thousands of years. With the progress of society, people's requirements for high performance and multifunctionality of silk are constantly increasing. Therefore, it is urgent to modify silk fiber and its products to improve its natural defects, endow it with new functional properties, improve the quality and added value of silk, and meet the ever-changing social needs. [0003] The hydrophobic modification of silk can reduce its surface energy, improve its hydrophobicity and anti-fouling ability, reduce the number of fabric washings, and improve the ease of care. While breaking the...

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): D06M13/224D06M16/00D06M101/10
CPCD06M13/224D06M16/003D06M2101/10D06M2200/12
Inventor 周春晓王春花俞金键
Owner JIANGSU HUAJIA SILK
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