High color fastness dyeing fabric for campus sports clothing and preparation process thereof

Abstract

The present application relates to a kind of high color fastness dyed fabric for campus sports clothing and its preparation process, belong to the technical field of fabric material.A kind of high color fastness dyed fabric for campus sports clothing is prepared by two immersions and two rollings of finishing liquid to fabric, the finishing liquid includes the following components by weight fraction: pigment 8-12 parts, titanium dioxide 15-21 parts, crosslinking agent 3-5 parts, surfactant 9-12 parts, dispersing agent 6-14 parts, acrylic resin emulsion 6-9 parts and deionized water 25-30 parts.The dyed fabric of the present application is finished by the finishing liquid of specific component, and the prepared fabric has excellent water resistance, rubbing fastness, and can also retain good breathable and comfortable performance, suitable for students daily wear and sports needs.

Description

Technical Field

[0001] This invention belongs to the technical field of fabric materials, and relates to a high color fastness dyed fabric for campus sportswear and its preparation process. Background Technology

[0002] School sportswear is a common type of clothing for students in their daily school life and sports activities. This type of clothing is worn frequently and requires frequent washing. Furthermore, students sweat easily and experience frequent friction during exercise, placing much higher demands on the colorfastness of the fabric compared to ordinary clothing. Currently, most commonly dyed fabrics used in school sportswear suffer from color fading due to washing and friction. After multiple washes, the color tends to lighten and stain, affecting not only the appearance of the clothing but also potentially causing skin irritation from the shed dye. Some high-fastness dyed fabrics, in order to improve colorfastness, add a large amount of color-fixing components, which can easily reduce the fabric's breathability and comfort, failing to meet the comfort requirements of school sportswear. Summary of the Invention

[0003] The purpose of this invention is to provide a high color fastness dyed fabric for campus sportswear and its preparation process. The dyed fabric of this invention is processed by finishing solution with specific components. The resulting fabric has excellent color fastness to washing and rubbing, while retaining good breathability and comfort, making it suitable for students' daily wear and sports needs.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A high colorfastness dyed fabric for campus sportswear is obtained by two dips and two rolls of the fabric with a finishing solution. The finishing solution comprises the following components by weight: 8-12 parts pigment, 15-21 parts titanium dioxide, 3-5 parts crosslinking agent, 9-12 parts surfactant, 6-14 parts dispersant, 6-9 parts acrylic resin emulsion, and 25-30 parts deionized water.

[0006] As a preferred embodiment of the present invention, the pigment is one or a combination of Disperse Blue 79 and Disperse Orange 288.

[0007] As a preferred embodiment of the present invention, the surfactant is one or more combinations of carboxylate surfactants, sulfonate surfactants and phosphate ester surfactants; the crosslinking agent includes an aziridine crosslinking agent, preferably, the surfactant is surfactant AEO, and the aziridine crosslinking agent is CX-100.

[0008] As a preferred embodiment of the present invention, the dispersant is SN-5040.

[0009] As a preferred embodiment of the present invention, the acrylic resin emulsion comprises the following components in parts by weight:

[0010] The composition includes 5-10 parts glycidyl methacrylate, 15-25 parts butyl acrylate, 10-18 parts methyl methacrylate, 1-3 parts acrylic acid, 3-5 parts 5-vinyl-2-hydroxybenzaldehyde, 5-8 parts of a complex, 2-4 parts of an emulsifier, 0.3-0.6 parts of an initiator, and 100-110 parts of deionized water.

[0011] A method for preparing a high colorfastness dyed fabric for campus sportswear includes the following steps:

[0012] Pigment, titanium dioxide, surfactant, crosslinking agent, dispersant and binder are added to deionized water and mixed, then ground to obtain a finishing solution; the grinding time is 60-90 minutes.

[0013] As a preferred embodiment of the present invention, the preparation of the acrylic resin emulsion includes:

[0014] Step 1: Mix glycidyl methacrylate, butyl acrylate, methyl methacrylate, acrylic acid, and 5-vinyl-2-hydroxybenzaldehyde, add emulsifier and deionized water, and stir at high speed for 30 minutes to obtain a pre-emulsion.

[0015] Step 2: Heat the pre-emulsion to 75-80℃, add 50% of the initiator and keep it warm while stirring. Slowly add the composite and the remaining initiator and continue stirring for 4-5 hours. Cool down to below 40℃, adjust the pH to neutral, filter and discharge the material. The preparation is now complete.

[0016] As a preferred embodiment of the present invention, the initiator is ammonium persulfate, and the emulsifier is composed of SDS and OP-10 in a mass ratio of 1:3-4.

[0017] As a preferred embodiment of the present invention, the preparation of the composite includes adding fumed silica to a chitosan solution and grinding at 1200 rpm for 1.5-2.0 h, ultrasonically dispersing for 30-60 min, allowing to stand, filtering, and drying to obtain the composite.

[0018] The beneficial effects of this invention are:

[0019] This invention, by adding a composite acrylic resin emulsion to the finishing solution, along with titanium dioxide and various auxiliary components, enables dye molecules to bind more stably within the pores of the fabric fibers. This ensures dyeing uniformity while improving the binding stability between the dye and the fiber, reducing dye loss during washing and rubbing, and enhancing the fabric's wash and rubbing fastness. Furthermore, the composite added in this invention is chitosan-modified fumed silica, which, combined with the acrylic resin polymerization system, does not clog the gaps between fabric fibers while fixing the color, preserving the fabric's original breathability and moisture permeability, ensuring wearing comfort, and meeting the needs of students in school sports settings. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with embodiments, is provided below.

[0021] Example 1

[0022] A high colorfastness dyed fabric for campus sportswear is obtained by two dips and two rolls of the fabric with a finishing solution.

[0023] The finishing solution comprises the following components by weight: 8 parts pigment, 15 parts titanium dioxide, 3 parts crosslinking agent, 9 parts surfactant, 6 parts dispersant, 6 parts acrylic resin emulsion, and 25 parts deionized water.

[0024] The pigment is Disperse Blue 79.

[0025] The preparation of the acrylic resin emulsion includes:

[0026] Step 1: Mix glycidyl methacrylate, butyl acrylate, methyl methacrylate, acrylic acid, and 5-vinyl-2-hydroxybenzaldehyde, add emulsifier and deionized water, and stir at high speed for 30 minutes to obtain a pre-emulsion.

[0027] Step 2: Heat the pre-emulsion to 75°C, add 50% of the initiator and keep it warm while stirring. Slowly add the composite and the remaining initiator and continue stirring for 4 hours. Cool down to below 40°C, adjust the pH to neutral, filter and discharge the material. The preparation is now complete.

[0028] Acrylic resin emulsions comprise the following components by weight:

[0029] The mixture consists of 5 parts glycidyl methacrylate, 15 parts butyl acrylate, 10 parts methyl methacrylate, 1 part acrylic acid, 3 parts 5-vinyl-2-hydroxybenzaldehyde, 5 parts complex, 2 parts emulsifier, 0.3 parts initiator, and 100 parts deionized water.

[0030] The initiator is ammonium persulfate, and the emulsifier is composed of SDS and OP-10 in a mass ratio of 1:3.

[0031] The preparation of the composite involves adding fumed silica to a chitosan solution and grinding at 1200 rpm for 1.5 h, ultrasonically dispersing for 30 min, allowing it to stand, filtering, and drying to obtain the composite.

[0032] The preparation method of the finishing solution includes:

[0033] Pigment, titanium dioxide, surfactant, crosslinking agent, dispersant and binder are added to deionized water and mixed, then ground for 60 minutes to obtain finishing solution.

[0034] Example 2

[0035] A high colorfastness dyed fabric for campus sportswear is obtained by two dips and two rolls of the fabric with a finishing solution.

[0036] The finishing solution comprises the following components by weight: 10 parts pigment, 18 parts titanium dioxide, 4 parts crosslinking agent, 10 parts surfactant, 10 parts dispersant, 8 parts acrylic resin emulsion, and 28 parts deionized water.

[0037] The pigment is Disperse Blue 79.

[0038] The preparation of the acrylic resin emulsion includes:

[0039] Step 1: Mix glycidyl methacrylate, butyl acrylate, methyl methacrylate, acrylic acid, and 5-vinyl-2-hydroxybenzaldehyde, add emulsifier and deionized water, and stir at high speed for 30 minutes to obtain a pre-emulsion.

[0040] Step 2: Heat the pre-emulsion to 78°C, add 50% of the initiator and keep it warm while stirring. Slowly add the composite and the remaining initiator and continue stirring for 4.5 hours. Cool down to below 40°C, adjust the pH to neutral, filter and discharge the material. The preparation is now complete.

[0041] Acrylic resin emulsions comprise the following components by weight:

[0042] The composition includes 8 parts glycidyl methacrylate, 20 parts butyl acrylate, 14 parts methyl methacrylate, 2 parts acrylic acid, 4 parts 5-vinyl-2-hydroxybenzaldehyde, 6 parts complex, 3 parts emulsifier, 0.4 parts initiator, and 105 parts deionized water.

[0043] The initiator is ammonium persulfate, and the emulsifier is composed of SDS and OP-10 in a mass ratio of 1:3.5.

[0044] The preparation of the composite involves adding fumed silica to a chitosan solution and grinding at 1200 rpm for 1.8 h, ultrasonically dispersing for 45 min, allowing it to stand, filtering, and drying to obtain the composite.

[0045] The preparation method of the finishing solution includes:

[0046] Pigment, titanium dioxide, surfactant, crosslinking agent, dispersant and binder are added to deionized water and mixed, then ground for 75 minutes to obtain finishing solution.

[0047] Example 3

[0048] A high colorfastness dyed fabric for campus sportswear is obtained by two dips and two rolls of the fabric with a finishing solution.

[0049] The finishing solution comprises the following components by weight: 12 parts pigment, 21 parts titanium dioxide, 5 parts crosslinking agent, 12 parts surfactant, 14 parts dispersant, 9 parts acrylic resin emulsion, and 30 parts deionized water.

[0050] The pigment is Disperse Blue 79.

[0051] The preparation of the acrylic resin emulsion includes:

[0052] Step 1: Mix glycidyl methacrylate, butyl acrylate, methyl methacrylate, acrylic acid, and 5-vinyl-2-hydroxybenzaldehyde, add emulsifier and deionized water, and stir at high speed for 30 minutes to obtain a pre-emulsion.

[0053] Step 2: Heat the pre-emulsion to 80°C, add 50% of the initiator and keep it warm while stirring. Slowly add the composite and the remaining initiator and continue stirring for 5 hours. Cool down to below 40°C, adjust the pH to neutral, filter and discharge the material. The preparation is now complete.

[0054] Acrylic resin emulsions comprise the following components by weight:

[0055] The mixture consists of 10 parts glycidyl methacrylate, 25 parts butyl acrylate, 18 parts methyl methacrylate, 3 parts acrylic acid, 5 parts 5-vinyl-2-hydroxybenzaldehyde, 8 parts of a complex, 4 parts of an emulsifier, 0.6 parts of an initiator, and 110 parts of deionized water.

[0056] The initiator is ammonium persulfate, and the emulsifier is composed of SDS and OP-10 in a mass ratio of 1:4.

[0057] The preparation of the composite involves adding fumed silica to a chitosan solution and grinding at 1200 rpm for 2.0 h, ultrasonically dispersing for 60 min, allowing it to stand, filtering, and drying to obtain the composite.

[0058] The preparation method of the finishing solution includes:

[0059] Pigment, titanium dioxide, surfactant, crosslinking agent, dispersant and binder are added to deionized water and mixed, then ground for 90 minutes to obtain finishing solution.

[0060] Comparative Example 1

[0061] Compared with Example 3, Comparative Example 1 did not undergo a grinding process, but all other steps were the same.

[0062] Comparative Example 2

[0063] Compared with Example 3, Comparative Example 2 did not undergo an ultrasonic process, but all other aspects were the same.

[0064] Comparative Example 3

[0065] Compared to Example 3, Comparative Example 3 did not use chitosan, but all other aspects were the same.

[0066] Comparative Example 4

[0067] Compared to Example 3, Comparative Example 4 did not use 5-vinyl-2-hydroxybenzaldehyde, but was otherwise identical.

[0068] Examples 1-3 and Comparative Examples 1-4 were tested as follows, and the test results are shown in Table 1.

[0069] Color fastness to washing (GB / T 5713);

[0070] Color fastness to dry rubbing (GB / T 3920)

[0071] Color fastness to wet rubbing (GB / T 3920)

[0072] Light fastness GB / T 8427.

[0073] Table 1

[0074]

[0075] As can be seen from the test results in Table 1, compared with Comparative Examples 1-4, the color fastness to washing, dry rubbing, wet rubbing, and light fastness of the dyed fabric for campus sportswear prepared by the present invention are significantly improved. This indicates that the components added in the present invention and the preparation process work synergistically to improve the color fastness performance of the dyed fabric, which can meet the needs of daily wear and frequent washing of campus sportswear.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high colorfastness dyed fabric for campus sportswear, obtained by two dips and two rolls of a finishing solution, characterized in that... The finishing solution comprises the following components by weight: 8-12 parts pigment, 15-21 parts titanium dioxide, 3-5 parts crosslinking agent, 9-12 parts surfactant, 6-14 parts dispersant, 6-9 parts acrylic resin emulsion, and 25-30 parts deionized water.

2. The high colorfastness dyed fabric for campus sportswear according to claim 1, characterized in that: The pigment is one or a combination of Disperse Blue 79 and Disperse Orange 288.

3. The high colorfastness dyed fabric for campus sportswear according to claim 1, characterized in that: Acrylic resin emulsions comprise the following components by weight: The composition includes 5-10 parts glycidyl methacrylate, 15-25 parts butyl acrylate, 10-18 parts methyl methacrylate, 1-3 parts acrylic acid, 3-5 parts 5-vinyl-2-hydroxybenzaldehyde, 5-8 parts of a complex, 2-4 parts of an emulsifier, 0.3-0.6 parts of an initiator, and 100-110 parts of deionized water.

4. A method for preparing a high colorfastness dyed fabric for campus sportswear as described in any one of claims 1 to 3, characterized in that, The preparation method includes the following steps: Pigment, titanium dioxide, surfactant, crosslinking agent, dispersant and binder are added to deionized water and mixed, then ground to obtain a finishing solution; the grinding time is 60-90 minutes.

5. The method for preparing a high colorfastness dyed fabric for campus sportswear according to claim 4, characterized in that, The preparation of the acrylic resin emulsion includes: Step 1: Mix glycidyl methacrylate, butyl acrylate, methyl methacrylate, acrylic acid, and 5-vinyl-2-hydroxybenzaldehyde, add emulsifier and deionized water, and stir at high speed for 30 minutes to obtain a pre-emulsion. Step 2: Heat the pre-emulsion to 75-80℃, add 50% of the initiator and keep it warm while stirring. Slowly add the composite and the remaining initiator and continue stirring for 4-5 hours. Cool down to below 40℃, adjust the pH to neutral, filter and discharge the material. The preparation is now complete.

6. The method for preparing a high colorfastness dyed fabric for campus sportswear according to claim 5, characterized in that... The initiator is ammonium persulfate, and the emulsifier is composed of SDS and OP-10 in a mass ratio of 1:3-4.

7. The method for preparing a high colorfastness dyed fabric for campus sportswear according to claim 5, characterized in that... The preparation of the composite involves adding fumed silica to a chitosan solution and grinding at 1200 rpm for 1.5-2.0 h, ultrasonically dispersing for 30-60 min, allowing it to stand, filtering, and drying to obtain the composite.

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