CN108914657B - Method for improving printing performance of real silk printed fabric - Google Patents

Method for improving printing performance of real silk printed fabric Download PDF

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CN108914657B
CN108914657B CN201810797881.2A CN201810797881A CN108914657B CN 108914657 B CN108914657 B CN 108914657B CN 201810797881 A CN201810797881 A CN 201810797881A CN 108914657 B CN108914657 B CN 108914657B
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ink
real silk
transfer printing
fabric
acid
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CN108914657A (en
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陈国强
苗赛男
邢铁玲
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Suzhou University
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Suzhou University
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
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    • D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
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Abstract

The invention relates to a method for improving printing performance of real silk printed fabric, which comprises the following steps: applying the polymer modifier on the surface of paper, and treating at 50-90 deg.C to obtain transfer printing paper with increased weight of 10-20g/m2Wherein the macromolecular modifier comprises the following components in percentage by mass: 0.5-5% of water-soluble hot melt adhesive, 2-12% of thickening agent, 0.5-3% of acid-base agent, 2-8% of moisture absorbent, 1-3% of inorganic salt and the balance of water; carrying out ink-jet printing on the transfer printing paper by using reactive dye ink or acid dye ink, and drying to obtain the transfer printing paper sprayed with ink; and (3) carrying out hot pressing and laminating on the transfer printing paper sprayed with the ink and the real silk fabric, steaming and washing to obtain the modified real silk printed fabric. The invention solves the problems of low color yield of fabrics, low dye fixation rate and environmental pollution caused by sizing pretreatment in the traditional printing method.

Description

Method for improving printing performance of real silk printed fabric
Technical Field
The invention relates to the technical field of textile printing, in particular to a method for improving the printing performance of real silk printed fabric.
Background
The silk fabric material is called as 'fiber queen', and has soft and smooth texture, soft and light hand feeling and cool and comfortable wearing. At present, the real silk printing method mainly comprises inkjet direct injection printing and traditional rotary screen printing, the two methods have good printing effect, but printed fabrics are both required to be subjected to sizing pretreatment, and a large amount of sewage containing dye and thickener auxiliaries is discharged in the subsequent washing process, so that the environmental pollution is caused; the large amount of paste on the surface of the fabric also prevents dye macromolecules from coloring the fabric. The dry transfer printing process for silk fabric is one new printing process, and the silk fabric needs no pre-treatment and hot pressing with dry transfer printing paper sprayed with dye ink before steaming to obtain excellent printed silk fabric. The Chinese patent with the application number of 201810560875.5 discloses a real silk printed fabric and a preparation method thereof, wherein auxiliaries such as a thickening agent and the like in the traditional printing process of the real silk fabric are applied to paper to prepare transfer printing paper, then dye ink is sprayed and printed on the surface of the transfer printing paper, and then the transfer printing paper is hot-pressed and attached to the padded real silk fabric.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for improving the printing performance of a real silk printed fabric, and solves the problems of low fabric color yield, low dye fixation rate and environmental pollution caused by sizing pretreatment of the real silk fabric in reactive dye and acid dye inkjet direct injection printing and traditional rotary screen printing.
In one aspect, the invention provides a method for improving printing performance of a real silk printed fabric, which comprises the following steps:
(1) applying the polymer modifier on the surface of paper, and treating at 50-90 deg.C to obtain transfer printing paper with increased weight of 10-20g/m2Wherein the macromolecular modifier comprises the following components in percentage by mass: 0.5-5% of water-soluble hot melt adhesive, 2-12% of thickening agent, 0.5-3% of acid-base agent, 2-8% of moisture absorbent, 1-3% of inorganic salt and the balance of water;
(2) carrying out ink-jet printing on the transfer printing paper by using reactive dye ink or acid dye ink, and drying to obtain the transfer printing paper sprayed with ink; when the acid-base agent in the polymer modifier in the step (1) is alkaline, performing inkjet printing by using reactive dye ink, and when the acid-base agent in the polymer modifier is acidic, performing inkjet printing by using acid dye ink;
(3) and (3) carrying out hot pressing and laminating on the transfer printing paper sprayed with the ink and the real silk fabric, steaming and washing to obtain the modified real silk printed fabric, wherein the hot pressing temperature is 100-160 ℃, and the hot pressing pressure is 3-6 Mpa.
Further, in the step (1), the water-soluble hot melt adhesive is one or more of a polyester hot melt adhesive, a polyamide hot melt adhesive and a polyurethane hot melt adhesive. The water-soluble hot melt adhesive has hot melt adhesiveness, and provides adhesion between the transfer printing paper and the fabric in the transfer printing heating and pressurizing process. In the steaming process, the transfer paper is tightly attached to the fabric after hot pressing, so that the dye is diffused from the transfer paper to the interior of the fabric, and the dye is fixed. These hot melt adhesives have good water solubility and chemical compatibility.
Further, in the step (1), the thickening agent is one or more of modified starch, sodium carboxymethyl cellulose, modified cellulose, sodium alginate, modified guar gum powder, modified tamarind gum powder and polyvinyl alcohol. The thickener has a thickening effect in the printing process, and forms a micro dye bath after absorbing and locking water in the steaming process, thereby providing a place for dye-uptake.
Further, in the step (1), the acid-base agent is one or more of sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate, or ammonium sulfate and/or citric acid. The reactive dye or the acid dye and the fiber are reacted in an alkaline or acid medium, and the selected acid-base agents are used for preparing the polymer modifier, so that transfer paper with higher quality can be obtained, and a better printing effect can be obtained.
Further, in the step (1), the moisture absorbent is one or more of dicyandiamide, urea, glycerol and triethylene glycol. The moisture absorbent has the function of absorbing moisture and swelling the fiber, and provides favorable conditions for fixing the dye on the fiber.
Further, in the step (1), the polymer modifier also comprises nanoparticles with the mass fraction of 0.2-0.5%, and the particle size of the nanoparticles is 30-50 nm. The nano particles are used as a physical adsorbent, so that the drying speed of the ink can be increased.
Further, in the step (1), the inorganic salt is one or more of sodium chloride, sodium sulfate, potassium chloride, potassium sulfate and ammonium chloride. The inorganic salt is added in the preparation process of the transfer printing paper, and the influence of the addition of the inorganic salt on the rheological property of the high molecular modifier and the stability of a coating needs to be considered, so that the dosage and the specific selection are very critical, and the apparent color yield of the fabric and the dye fixation rate can be increased by selecting the inorganic salt and the dosage thereof. In addition, the addition of the inorganic salt makes the real silk fabric not need to be padded, simplifies the fabric treatment process and reduces the production cost.
Further, in the step (2), the reactive dye ink and the acid dye ink are commercially available dye inks on the market.
Further, in the step (3), the steaming temperature is 100-102 ℃, and the steam saturation is 98%.
Further, in the step (3), the steaming time is 10-12min when the reactive dye ink is used in the step (2), and is 15-20min when the acid dye ink is used.
On the other hand, the invention also provides the modified real silk printed fabric prepared by the method, the color depth value of the modified real silk printed fabric is 9.4-11.6, the dye permeability is 23% -29%, and the color fixing rate is 87-97%.
By the scheme, the invention at least has the following advantages:
1. according to the method for improving the printing performance of the real silk printed fabric, auxiliaries such as the thickening agent and the like in the traditional printing process of the real silk fabric are applied to paper to prepare the transfer printing paper, inorganic salt is added into a high-molecular modifier to play a role in promoting the dyeing, dye ink is sprayed and printed on the surface of the transfer printing paper, and during the hot-pressing steaming period, the dye enters the fabric without obstruction, so that the problem of the obstruction of the auxiliaries such as the thickening agent and the like in the traditional printing method and the ink-jet printing method to the dyeing of the fabric by the dye is solved.
2. By adopting the printing method, the fabric can be ensured to have finer and vivid patterns while the higher fabric color obtaining and dye fixation rate is obtained.
3. The printing method is simple and convenient to operate and control, and a large amount of waste materials are stored on paper, so that the discharge of industrial wastewater is reduced.
4. The real silk fabric printing method is simple and easy to implement and amplify.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a preferred embodiment of the present invention and is described in detail below.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
(1) Preparing a high molecular modifier, wherein the high molecular modifier comprises the following components in percentage by mass based on the total weight of the high molecular modifier: 0.5% of water-soluble polyester hot melt adhesive, 10% of modified cellulose, 1.5% of modified starch, 0.5% of sodium carboxymethylcellulose, 5% of urea, 3% of dicyandiamide, 2% of sodium carbonate, 2% of sodium chloride, 0.5% of nano silicon dioxide and the balance of water. The components are mixed evenly and stirred fully until the components are fully swelled and dissolved, so that the components in the polymer modifier are fully dissolved and uniformly dispersed. For comparison, a control polymer modifier was prepared, and the components and contents were the same as described above except that sodium chloride was not added.
(2) Respectively applying the prepared macromolecular modifier on paper, then treating in an oven at 60 ℃ to prepare the transfer printing paper, wherein the coating amount of the macromolecular modifier on the paper is 15g/m2. Then, a reactive dye ink (reactive dye CYAN) was ejected onto the transfer printing paper using an ink jet printer and dried under room temperature conditions. And hot-pressing and laminating the transfer printing paper and the real silk fabric at the hot-pressing temperature of 100 ℃ and the pressure of 5 Mpa. Then steaming the transfer printing paper and the fabric together, wherein the steaming temperature is 100 ℃, the steam saturation is 98 percent, and the time is 10 min. And (4) washing after steaming is finished to obtain the modified real silk printed fabric.
Tests prove that the transfer paper printed fabric prepared by the macromolecular modifier formula without sodium chloride in the control group has the color depth value of 8.08, the dye fixation rate of 70.17 percent and the dye permeability of 11.39 percent. After the high molecular modifier is added with salt, the color depth value of a printed fabric is 11.54, the dye fixation rate is 96.61%, and the dye permeability is 23.38%.
The transfer printing performance of the printed fabric is tested by the following method:
1. color depth value of fabric
The color depth value K/S value of the fabric is measured on an UltraScan PRO color measuring instrument by adopting D65Light source, 10 degree visual field, sample folding 4 layers, respectively taking 4 points, testing 4 times data, and taking average value of test results.
2. Dye fixation and permeability
The color fixing rate calculation formula is as follows:
fixation F/% ═ K/Sf/(K/S)fo×100％
In the formula, (K/S)fAnd (K/S)foThe values of the front color depth of the printed fabric after washing and before washing are shown respectively.
Permeability calculation formula:
permeability P/% ═ K/Sb/[0.5×((K/S)f+(K/S)b))]×100％
In the formula, (K/S)fAnd (K/S)bRespectively representing the color depth value of the front surface and the color depth value of the back surface of the printed fabric after washing.
Example 2
(1) Preparing a high molecular modifier, wherein the high molecular modifier comprises the following components in percentage by mass based on the total weight of the high molecular modifier: 5% of water-soluble polyurethane hot-melt adhesive, 5% of modified guar gum powder, 0.5% of modified starch, 4% of urea, 1% of triethylene glycol, 3% of sodium bicarbonate, 0.5% of nano silicon dioxide, 1% of sodium sulfate and the balance of water. The components are mixed evenly and stirred fully until the components are fully swelled and dissolved, so that the components in the polymer modifier are fully dissolved and uniformly dispersed. For comparison, the polymer modifier of the control was prepared, and the components and contents were the same as those described above except that sodium sulfate was not added.
(2) Respectively applying the prepared macromolecular modifier to paper, and then drying in an oven at 50 DEG CAfter treatment, transfer printing paper is prepared, and the coating amount of the polymer modifier on the paper is 12g/m2. Then, a reactive dye ink (reactive dye CYAN) was ejected onto the transfer printing paper using an ink jet printer and dried under room temperature conditions. And then, hot-pressing and laminating the transfer printing paper and the twill silk fabric at the hot-pressing temperature of 150 ℃ and the pressure of 3 Mpa. Then steaming the transfer printing paper and the fabric together, wherein the steaming temperature is 100 ℃, the steam saturation is 98 percent, and the time is 12 min. And (4) washing after steaming is finished to obtain the modified real silk printed fabric.
The test was performed according to the method of example 1, and the control formulation of the polymeric modifier without sodium sulfate produced a transfer paper printed fabric with a color depth of 7.90, a dye fixation of 68.22% and a dye permeability of 10.48%. After the high molecular modifier is added with salt, the color depth value of a printed fabric is 10.69, the dye fixation rate is 93.12%, and the dye permeability is 21.10%.
Example 3
(1) Preparing a high molecular modifier, wherein the high molecular modifier comprises the following components in percentage by mass based on the total weight of the high molecular modifier: 3% of water-soluble polyester hot melt adhesive, 2% of sodium alginate, 3% of modified tamarind gum powder, 3% of urea, 5% of glycerol, 3% of ammonium sulfate, 2.5% of potassium chloride and the balance of water. The components are mixed evenly and stirred fully until the components are fully swelled and dissolved, so that the components in the polymer modifier are fully dissolved and uniformly dispersed. For comparison, a control polymer modifier was prepared, and the components and contents were the same as described above except that potassium chloride was not added.
(2) Respectively applying the prepared macromolecular modifier on paper, then treating in an oven at 90 deg.C to prepare transfer printing paper, on the paper the coating quantity of macromolecular modifier is 20g/m2. Then, an acid dye ink (acid dye CYAN) was sprayed onto the transfer printing paper using an ink jet printer and dried at room temperature. And then, hot-pressing and laminating the transfer printing paper and the twill silk fabric at the hot-pressing temperature of 160 ℃ and the pressure of 5 Mpa. Then steaming the transfer printing paper and the fabric together, wherein the steaming temperature is 100 ℃, the steam saturation is 98 percent, and the time is 20 min. And (5) steaming and washing to obtain the modified real silk printed fabric.
According to the test method in the example 1, the color depth value of the transfer paper printed fabric prepared by the macromolecular modifier formula without potassium chloride in the control group is 6.90, the dye fixation rate is 56.31 percent, and the dye permeability is 11.86 percent. After the high molecular modifier is added with salt, the color depth value of a printed fabric is 9.45, the dye fixation rate is 87.32 percent, and the dye permeability is 28.24 percent.
Example 4
(1) Preparing a high molecular modifier, wherein the high molecular modifier comprises the following components in percentage by mass based on the total weight of the high molecular modifier: 2% of water-soluble polyamide hot melt adhesive, 3% of modified cellulose, 6% of modified tamarind gum powder, 5% of urea, 2% of ammonium sulfate, 0.5% of citric acid, 3% of ammonium chloride and the balance of water. The components are mixed evenly and stirred fully until the components are fully swelled and dissolved, so that the components in the polymer modifier are fully dissolved and uniformly dispersed. For comparison, a control polymer modifier was prepared, and the components and contents were the same as described above except that ammonium chloride was not added.
(2) Respectively applying the prepared macromolecular modifier on paper, then processing in an oven at 80 ℃ to prepare the transfer printing paper, wherein the coating amount of the macromolecular modifier on the paper is 18g/m2. Then, an acid dye ink (acid dye CYAN) was sprayed onto the transfer printing paper using an ink jet printer and dried at room temperature. And then carrying out hot pressing and laminating on the transfer printing paper and the electric spinning silk fabric, wherein the hot pressing temperature is 160 ℃, and the pressure is 5 Mpa. Then the transfer printing paper and the fabric are steamed together, the steaming temperature is 100 ℃, the steam saturation is 98 percent, and the time is 15 min. And (5) steaming and washing to obtain the modified real silk printed fabric.
The test was carried out as in example 1, and the polymer modifier formulation without potassium chloride in the control group produced a transfer paper printed fabric with a color depth of 6.43, a dye fixation of 65.24% and a dye permeability of 15.57%. After the high molecular modifier is added with salt, the color depth value of a printed fabric is 10.95, the dye fixation rate is 96.92%, and the dye permeability is 24.21%.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (4)

1. A method for improving the printing performance of real silk printed fabrics is characterized by comprising the following steps:
(1) applying the polymer modifier on the surface of paper, and treating at 50-90 deg.C to obtain transfer printing paper with increased weight of 10-20g/m2Wherein the macromolecular modifier comprises the following components in percentage by mass: 0.5-5% of water-soluble hot melt adhesive, 2-12% of thickening agent, 0.5-3% of acid-base agent, 2-8% of moisture absorbent, 1-3% of inorganic salt and the balance of water; the polymer modifier also comprises nano particles with the mass fraction of 0.2-0.5%, and the particle size of the nano particles is 30-50 nm; the nano particles are nano silicon dioxide; the acid-base agent is one or more of sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate, or ammonium sulfate and/or citric acid; the inorganic salt is one or more of sodium chloride, sodium sulfate, potassium chloride, potassium sulfate and ammonium chloride; the water-soluble hot melt adhesive is one or more of a polyester hot melt adhesive, a polyamide hot melt adhesive and a polyurethane hot melt adhesive; the thickening agent is one or more of modified starch, sodium carboxymethylcellulose, modified cellulose, sodium alginate, modified guar gum powder, modified tamarind seed gum powder and polyvinyl alcohol; the moisture absorbent is one or more of dicyandiamide, urea, glycerol and triethylene glycol;
(2) carrying out ink-jet printing on the transfer printing paper by using reactive dye ink or acid dye ink, and drying to obtain the transfer printing paper sprayed with ink; when the acid-base agent in the polymer modifier in the step (1) is alkaline, performing inkjet printing by using reactive dye ink, and when the acid-base agent in the polymer modifier is acidic, performing inkjet printing by using acidic dye ink;
(3) and carrying out hot-pressing lamination on the transfer printing paper sprayed with the ink and the real silk fabric, steaming and washing to obtain the modified real silk printed fabric, wherein the hot-pressing temperature is 100-160 ℃, and the hot-pressing pressure is 3-6 MPa.
2. The method of claim 1, wherein: in the step (3), the steaming temperature is 100-102 ℃, and the steam saturation is 98%.
3. The method of claim 1, wherein: in the step (3), when the reactive dye ink is used in the step (2), the steaming time is 10-12min, and when the acid dye ink is used, the steaming time is 15-20 min.
4. A modified printed real silk fabric produced by the method of any one of claims 1 to 3, wherein: the color depth value of the modified real silk printed fabric is 9.4-11.6, the dye permeability is 23% -29%, and the color fixing rate is 87-97%.
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