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Fibroin-polyurethane composite finishing agent and preparation method thereof

A polyurethane and finishing agent technology, applied in the field of silk modification, can solve problems such as environmental pollution and human hazards, achieve good stability, not easy to decompose, and be beneficial to environmental protection

Inactive Publication Date: 2014-12-24
SUZHOU INSILK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silk fabrics treated with this kind of finishing agent are easy to release carcinogenic formaldehyde in the process of wearing and taking, causing environmental pollution and human hazards. At the same time, it also limits the competitiveness of my country's textiles in the international market to some extent. Develop formaldehyde-free durable non-ironing finishing agents for textiles, such as epoxy resin, bishydroxyethyl sulfone, polycarboxylic acid and water-soluble polyurethane, etc. The non-ironing performance of fabrics treated by them has been significantly improved, but there are still some problems. Shortcomings

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A silk fibroin-polyurethane composite finishing agent, in parts by weight, comprises the following components:

[0035] 5 parts of silk fibroin finishing solution;

[0036] 7 parts of water-based polyurethane;

[0037] 1 part of catalyst;

[0038] 2 parts softener;

[0039] 2 parts of penetrant;

[0040] 1 part of crosslinking agent.

[0041] Its preparation method comprises the following steps:

[0042] (1) preparation concentration is the sodium carbonate solution of 1g / L;

[0043] (2) dipping the cleaned silk fabric in the prepared sodium carbonate solution, two dips and two ties, the bath ratio is 1:30, and the overage rate is 70%;

[0044] (3) the silk fabric is taken out, washed twice with cold water, dried at 60°C, and set aside for use;

[0045] (4) Prepare a calcium chloride solution with a concentration of 2g / L, add absolute ethanol, soak the degummed silk fabric in a mixed aqueous solution of calcium chloride and ethanol, and stack at 70°C for 2h;

[...

Embodiment 2

[0049] A silk fibroin-polyurethane composite finishing agent, in parts by weight, comprises the following components:

[0050] 10 parts of silk fibroin finishing solution;

[0051] 15 parts of water-based polyurethane;

[0052] 3 parts of catalyst;

[0053] Softener 5 parts;

[0054] 5 parts of penetrant;

[0055] 5 parts of crosslinking agent.

[0056] Its preparation method comprises the following steps:

[0057] (1) preparation concentration is the sodium carbonate solution of 3g / L;

[0058] (2) dipping and tying the cleaned silk fabric in the prepared sodium carbonate solution, two dips and two ties, the bath ratio is 1:60, and the overage rate is 80%;

[0059] (3) the silk fabric is taken out, washed 3 times with cold water, dried at 80°C, and set aside for use;

[0060] (4) Prepare a calcium chloride solution with a concentration of 5g / L, add absolute ethanol, soak the degummed silk fabric in a mixed aqueous solution of calcium chloride and ethanol, and stack at 8...

Embodiment 3

[0064] A silk fibroin-polyurethane composite finishing agent, in parts by weight, comprises the following components:

[0065] 7 parts of silk fibroin finishing solution;

[0066] 10 parts of water-based polyurethane;

[0067] 2 parts of catalyst;

[0068] 3 parts softener;

[0069] 3 parts of penetrant;

[0070] 2 parts of crosslinking agent.

[0071] Its preparation method comprises the following steps:

[0072] (1) preparation concentration is the sodium carbonate solution of 2g / L;

[0073] (2) dipping and tying the cleaned silk fabric in the prepared sodium carbonate solution, two dips and two ties, the bath ratio is 1:40, and the overage rate is 75%;

[0074] (3) the silk fabric is taken out, washed twice with cold water, dried at 70°C, and set aside for use;

[0075] (4) Prepare a calcium chloride solution with a concentration of 3 g / L, add absolute ethanol, soak the degummed silk fabric in a mixed aqueous solution of calcium chloride and ethanol, and stack at 75°...

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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PUM

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Abstract

The invention discloses a fibroin-polyurethane composite finishing agent which comprises the following components in parts by weight: 5-10 parts of fibroin finishing liquid, 7-15 parts of waterborne polyurethane, 1-3 parts of a catalyst, 2-5 parts of a softer, 2-5 parts of a penetrant and 1-5 parts of a crosslinker. The invention further discloses a preparation method of the finishing agent. The finishing agent prepared by the method can increase the wrinkle recovery angle of a silk fabric and enables the silk fabric to keep flat, and also can endow the silk fabric with a soft hand feel and good luster and enables the silk fabric to have the water absorptivity, moisture absorptivity and moisture releasability as well as excellent hand feel of natural real silk; moreover, the finishing agent is nontoxic, harmless to a human body and favorable for environmental protection.

Description

Technical field: [0001] The invention relates to the technical field of silk modification, in particular to a silk fibroin-polyurethane composite finishing agent and a preparation method thereof. Background technique: [0002] Silk is a natural protein fiber. Silk products made from it have long been favored by consumers. Silk fabrics have many excellent properties and are comfortable to wear, but their elasticity is poor, and they are easy to break during wearing and washing. Wrinkles require frequent ironing or a non-iron finish. [0003] At present, the non-iron finishing agents that are widely used in industry are some N-methylolamide compounds and their modified products, such as dimethylol dihydroxyethylene urea (2D) resin and etherified 2D resin. The silk fabrics finished with this kind of finishing agent are easy to release the carcinogenic substance formaldehyde in the process of wearing and taking, causing environmental pollution and human harm. The development o...

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): D06M15/564D06M15/15C07K14/435D06M101/10
Inventor 周继东
Owner SUZHOU INSILK CO LTD
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