Reflective color-changing printing paste and preparation method thereof

Abstract

The invention relates to the field of textile pigment printing, in particular to research and development of reflective color-changing printing paste and a preparation method thereof. The reflective paint is composed of the following components in parts by mass: 20-30 parts of reflective powder; 2-5 parts of color changing powder; 2-5 parts of mineral powder; 5-10 parts of colorful glitter powder; 10 to 20 parts of a water-based acrylate emulsion; 24 to 39 parts of water; the 4-6 parts of auxiliaries comprise the following auxiliaries: a dispersing agent, a penetrating agent, a defoaming agent, an antiseptic and anti-mildew agent and a thickening agent; the preparation method of the printing paste comprises the following steps: sequentially adding the components in a dispersion cylinder, fully stirring and uniformly mixing to obtain the printing paste. The reflective powder, the color-changing powder, the mineral powder and the colorful glitter powder are mixed for use, and the four kinds of powder with the shiny printing effect and the functional reflective effect powder are mixed for use; the light-reflecting warning cloth has a functional dressing light-reflecting warning effect, and can be used for night clothes, running clothes and a glittering printing effect when being worn at ordinary times; the light-reflecting color-changing printing paste is simple in use process, can achieve a visual flash effect after being printed on a textile by using a screen plate, is beneficial to market popularization and utilization, and has a wide application prospect.

Description

Technical Field

[0001] The invention relates to the field of textile coating printing, in particular to a coating with special printing effect, and obtains a reflective color-changing printing paste and a preparation method thereof. Background Art

[0002] With the development of society and the progress of human civilization, people are paying more and more attention to the appearance of clothing. In order to diversify the styles of clothing and meet the aesthetic needs of consumers, existing clothes usually have printed patterns, and there are more requirements for the personalization and highlighting of printed patterns. Not only should the patterns be functional, but the appearance should also be eye-catching, making the clothing a performance, showing personality, and giving people a visual enjoyment. Summary of the invention

[0003] In view of the shortcomings of the prior art, one of the objects of the present invention is to provide a method for preparing a reflective color-changing printing paste, which has a functional reflective effect.

[0004] In view of the shortcomings of the prior art, the second purpose of the present invention is to provide a method for preparing a reflective color-changing printing paste, which has a colorful shiny effect on the printed appearance.

[0005] The above-mentioned object of the present invention is achieved by the following technical scheme: a reflective color-changing printing paste, comprising the following components in parts by weight: 20-30 parts of reflective powder; 2-5 parts of pearl white mineral powder; 5-10 portions of colorful glitter powder; Color changing powder 3-5; 10-30 parts of water-based acrylic emulsion; 1-2 parts of dispersant; 1-2 parts of wetting agent; 20-59 parts of water; Defoaming agent 0.5-1.5 parts; 0.3-0.5 parts of antiseptic and mildew-proof agent; Thickener 1-3 parts.

[0006] By adopting the above technical solution, in a reflective color-changing printing paste, by using water-based acrylic emulsion as the main material, the printing paste has good fastness, stably adheres to the cloth, and the pattern is not easily damaged; By adopting the above technical solution, reflective powder is added to a reflective color-changing printing paste, so that the pattern formed by printing and dyeing the printing paste has functionality, has a reflective effect under light conditions, has a warning effect for night travel, sports and various types of work, plays a protective role and also has a printing aesthetic. By adopting the above technical solution to add colorful glitter powder into a reflective color-changing printing paste, the pattern printed by the printing paste can directly have a beautiful and shiny printing effect, further meeting the aesthetic needs; By adopting the above technical solution to add color-changing powder into a reflective color-changing printing paste, the printed pattern can have a changing effect, with different colored light flashing effects at different angles, thereby achieving an unpredictable shining printing effect at different angles; By adopting the above technical solution, white mineral powder is added to a reflective color-changing printing paste to fill the gaps in the glitter printing, making the printed pattern more shiny and improving the flatness of the printed glitter; By adding a dispersant to the printing paste, the above powdered items can be better dispersed in the water-based acrylic emulsion, not easy to agglomerate, and the stability of a reflective color-changing printing paste can be improved; By adding a wetting agent to the printing paste, the above powder is more closely combined with water and the connection stability with the water-based acrylic emulsion is higher, thereby further improving the stability of the printing paste system and better ensuring the storage stability and use stability of a reflective color-changing printing paste.

[0007] The present invention can be further configured in the following example as follows: the wetting agent is compounded by an alcohol wetting agent, monoethanolamine, and diglycolamine in a mass ratio of 1:0.9:1.5.

[0008] The present invention can be further configured in the comparative example as follows: the reflective color-changing printing paste further includes the following components in parts by weight: 1-3 parts of acrylic thickener.

[0009] By adopting the above technical solution, the viscosity of the printing paste can be adjusted to a range that is more suitable for printing and dyeing processing, which is beneficial to the process operation that meets the fineness requirements of the printed pattern.

[0010] The reflective color-changing printing paste of the present invention may further include the following components in parts by weight: 0.5-1.5 parts of a defoaming agent; and 0.5-1.5 parts of an antiseptic and mildew preventer.

[0011] By using defoaming agents to remove bubbles, we can reduce large bubbles caused by stirring, thereby reducing the unevenness of printed and dyed patterns. By adding preservatives and mildew inhibitors, the printing paste is less likely to mold and the storage time is long, which improves economic benefits.

[0012] The above-mentioned object of the present invention is achieved through the following technical solutions: A method for preparing the above-mentioned reflective color-changing printing paste is characterized in that it comprises the following steps: (1) Add the water-based acrylic emulsion into the container, add the dispersant and wetting agent while stirring, and stir for 10-20 minutes after adding to form a mixed solution; (2) Slowly add reflective powder to the mixture and stir evenly for about 10 minutes; (3) Slowly add the color-changing powder to the mixture and stir evenly for about 10 minutes; (4). Slowly add white ore powder to the mixture and stir evenly for about 10 minutes; (5). Slowly add colorful glitter powder to the mixture and stir evenly; after adding the above four powders, stir thoroughly for 30-50 minutes to fully disperse; (6). Finally, add the defoamer and preservative and mildew preventer and stir for 10 minutes; (7) Finally, add the thickener and stir and disperse at a speed of 800-1000 rpm for 20 minutes to obtain a reflective color-changing printing slurry.

[0013] By adopting the above technical solution, through filtering, the large particle impurities in the printing paste are reduced, and it is not easy to be blocked during printing and dyeing. At the same time, it is not easy for the printed pattern to be locally bulged due to the presence of large particles, resulting in poor hand feel and uneven printing pattern.

[0014] By adopting the above technical solution, after adding the defoaming agent, the foam generated by the physical characteristics of stirring can be prevented from affecting the flatness and smoothness of the printing paste.

[0015] By adopting the above technical solution and adding the preservative and mildew preventer, the slurry can be prevented from being deteriorated and unusable due to not being used up for a long time or an undesirable storage environment, thereby causing unnecessary economic losses.

[0016] By adopting the above technical solution and finally adding a thickener, a reflective color-changing printing paste is made to have a consistency suitable for flat screen, round screen and manual printing, and the display effect of the paste on the fabric will not be affected by the thinness of the paste.

[0017] In summary, the present invention includes at least one of the following technical effects: (1). By adding reflective powder to a reflective color-changing printing paste, a reflective flash effect can be achieved under poor light conditions, which can protect the clothing and play a role in safety. The light-sensitive color-changing effect makes the pattern formed by printing and dyeing rich in color, better meeting people's growing aesthetic needs; (2). By adding colorful glitter powder, white mineral powder and color-changing powder to a reflective color-changing printing paste, the printing paste has a better color-changing effect, thereby making the pattern formed by printing and dyeing rich in color, better meeting people's growing aesthetic needs; (3). The wetting agent is compounded from alcohol wetting agent and amine compound, so that organic matter, reflective powder, color-changing powder, colorful glitter powder, and white mineral powder can be more stably connected with water and dispersed in water more stably. The slurry is not easy to clump, so the printing pattern effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic flow diagram of a method for preparing a reflective color-changing printing paste. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings. The source information of the raw materials used in the following embodiments and comparative examples is shown in Table 1. Examples 1-5 A reflective color-changing printing paste comprises the following components: Water-based acrylic emulsion, reflective powder, defoamer, dispersant, wetting agent; The wetting agent is a compound of one or more of alcohol wetting agents, monoethanolamine, and diglycolamine; Determine the particle size of the reflective powder used in the component to determine the best particle size for textile printing and dyeing, while ensuring both the flash and the mesh performance of the printing screen.

[0020] The percentage units of each component in Examples 1-5 are detailed in Table 2. A method for preparing a reflective color-changing printing paste according to Embodiment 1-5 comprises the following steps: (1) The aqueous acrylic emulsion is added to the dispersion tank, stirred continuously by a disperser at a speed of 1200r / min and a dispersant, a wetting agent, a defoaming agent is added according to the specific embodiment, and stirred for 10min after the addition is completed to form a mixed solution; (2) Reflective powder is added to the mixture according to the specific embodiment, and the mixture is stirred continuously for 30 minutes at 1200 r / min by a disperser, and then filtered through an 800-mesh screen to obtain a reflective color-changing printing paste.

[0021] A reflective color-changing printing paste comprises the following components: Water-based acrylic emulsion, dispersant, wetting agent, reflective powder, color-changing powder, mineral powder, defoamer, thickener; the wetting agent is a compound of alcohol wetting agent, monoethanolamine and diglycolamine.

[0022] The input amount (unit percentage) of each component in Examples 6-10 is detailed in Table 3. A method for preparing a reflective color-changing printing paste according to Embodiment 6-10 comprises the following steps: (1) The aqueous acrylic emulsion is added to the dispersion tank, stirred continuously by a disperser at a speed of 1200r / min and a dispersant, a wetting agent, a defoaming agent is added according to the specific embodiment, and stirred for 10min after the addition is completed to form a mixed solution; (2) Add reflective powder, color-changing powder and mineral powder to the mixed liquid, stir it continuously for 30 minutes at 1200 r / min through a disperser, add thickener, stir it continuously for 30 minutes at 1200 r / min through a disperser, and obtain a reflective color-changing printing paste.

[0023] A reflective color-changing printing paste comprises the following components: Water-based acrylic emulsion, dispersant, wetting agent, reflective powder, color-changing powder, mineral powder, colorful glitter powder, defoamer, thickener; The wetting agent is a compound of alcohol wetting agent, monoethanolamine and diglycolamine.

[0024] The input amount (unit percentage) of each component in Examples 11-15 is detailed in Table 4. A method for preparing a reflective color-changing printing paste according to Examples 11-15 comprises the following steps: (1) The aqueous acrylic emulsion is added to the dispersion tank, stirred continuously by a disperser at a speed of 1200r / min and a dispersant, a wetting agent, a defoaming agent is added according to the specific embodiment, and stirred for 10min after the addition is completed to form a mixed solution; (2) Add reflective powder, color-changing powder, mineral powder and colorful glitter powder to the mixed liquid, stir it continuously for 30 minutes at 1200 r / min through a disperser, add thickener, stir it continuously for 30 minutes at 1200 r / min through a disperser to obtain a reflective color-changing slurry.

[0025] A reflective color-changing printing paste comprises the following components: Water-based acrylic emulsion, dispersant, wetting agent, defoamer, preservative and mildew inhibitor, thickener; the wetting agent is a compound of alcohol wetting agent, monoethanolamine and diglycolamine.

[0026] The input amount (unit percentage) of each component in Comparative Example 1-2 is detailed in Table 5. The detection method of Comparative Example 1 is as follows: Experiment 1: The pH value of the printing paste prepared in each embodiment and comparative example was tested by a PHS-2C acidity meter; Experiment 2: The viscosity of the printing paste prepared in each embodiment and comparative example was measured by a NDJ-1 rotary viscometer; Experiment 3: The reflectivity level of the pattern printed by the printing paste prepared in each embodiment and comparative example was tested. The testing method is as follows: The printing pastes prepared in each embodiment and comparative example were respectively used to prepare samples; when preparing the samples, firstly, a white pure cotton woven fabric was laid flat on a printing table, a full-ground screen of 800 mesh was selected, two scrapings were made on the fabric, hot air was blown dry, and high-temperature baking was performed at 150°C for 3 minutes; the samples prepared in each embodiment and comparative example were visually inspected under a fluorescent lamp to determine the printing gloss of the samples, and the reflectivity of the samples was tested under the condition of turning off the lights, with 5 people in each group, and the average value was taken to obtain a grade assessment, with the highest being grade 5; Experiment 4: Testing the washing fastness (40°C) of the printed patterns printed by the printing pastes prepared in the embodiments and comparative examples, the testing method is as follows: Principle: The textile sample is sewn against the backing fabric, placed in a soap solution, and then mechanically stirred, rinsed, and dried under the specified time and temperature conditions. The discoloration of the sample and the staining of the backing fabric are evaluated using a gray card. Test standard: imitation ISO105 C03; sample preparation: 4×10cm four-side stitching; multi-fiber lining: acetate, cotton, nylon, polyester, acrylic, wool; test conditions: temperature: 60℃, sweat volume: 1:50, time: 30min; Reagent preparation standard: synthetic detergent: 4g / L, anhydrous sodium carbonate: 2g / L; Steps: (1) Place the prepared composite sample in a container, inject soap solution preheated to the specified temperature, and treat at the specified temperature for a certain period of time; (2) Take out the combined sample, wash it twice with cold water, then rinse it in running water for 10 minutes, squeeze out the water, disassemble the combined sample, make sure the lining of the sample is connected by only one short side seam, and hang it in air at no more than 60°C to dry; (3) Use the grey scale to evaluate the discoloration (fading) of the original sample and the color sticking to the backing fabric; Experiment 5: The rubbing fastness of the printing paste prepared in each embodiment and comparative example was tested using a rubbing color fastness tester according to GB3920-1983 “Test method for color fastness to rubbing of textiles”.

[0027] The test results of Experiments 1-5 are detailed in Table 6. According to the data comparison between Comparative Example 1 and Example 1 in Table 5, it can be seen that adding reflective powder to the printing paste does have a reflective printing effect.

[0028] According to the data comparison between Comparative Example 2 and Example 1 in Table 5, it can be obtained that the water-based acrylic resin effectively improves the washing fastness and rubbing fastness of the printing paste.

[0029] According to the data comparison of Comparative Example 2 and Example 2, Example 3, Example 4 and Example 5 in Table 5, it can be obtained that the particle size of the reflective powder is 350 mesh, which has excellent flash and fastness.

[0030] According to the data comparison of Comparative Example 2 and Example 2, Example 6, Example 7, Example 8, Example 9, and Example 10 in Table 5, it can be obtained that the addition of color-changing powder and mineral powder can improve the reflectivity of the printing paste and the glossiness of the printing.

[0031] According to the data comparison of Comparative Example 2 with Example 6, Example 11, Example 12, Example 13, Example 14, and Example 15 in Table 5, it can be found that adding colorful glitter powder can more effectively improve the reflectivity of the printing paste, the glossiness of the printing, and the change of color.

[0032] In summary, adding water-based acrylic resin, dispersant, wetting agent, defoaming agent, preservative and mildew preventer into the printing paste and then combining with appropriate reflective powder, color-changing powder, white mineral powder and colorful glitter powder will achieve the washing fastness and friction fastness required for textile printing and a special functional reflective effect, plus the surface has a colorful glitter effect.

[0033] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reflective color-changing printing paste in the present invention may also include the following components in parts by weight: 20-30 parts of reflective powder; 2-5 parts of pearl white mineral powder; 5-10 portions of colorful glitter powder; Color changing powder 3-5; 10-30 parts of water-based acrylic emulsion; 1-2 parts of dispersant; 1-2 parts of wetting agent; 20-59 parts of water; Defoaming agent 0.5-1.5 parts; 0.3-0.5 parts of antiseptic and mildew-proof agent; Thickener 1-3 parts.

2. The above-mentioned invention object of the present invention is achieved through the following technical solutions: (1) Add the water-based acrylic emulsion into the container, add the dispersant and wetting agent while stirring, and stir for 10-20 minutes after adding to form a mixed solution; (2) Slowly add reflective powder to the mixture and stir evenly for about 10 minutes; (3) Slowly add the color-changing powder to the mixture and stir evenly for about 10 minutes; (4). Slowly add white ore powder to the mixture and stir evenly for about 10 minutes; (5). Slowly add colorful glitter powder to the mixture and stir evenly; after adding the above four powders, stir thoroughly for 30-50 minutes to fully disperse; (6). Finally, add the defoamer and preservative and mildew preventer and stir for 10 minutes; (7) Finally, add the thickener and stir and disperse at a speed of 800-1000 rpm for 20 minutes to obtain a reflective color-changing printing slurry.

3. By adopting the above technical solution, through filtering, there are fewer large particle impurities in the printing paste, which is not easy to be blocked during printing and dyeing. At the same time, it is not easy for the printed pattern to be locally bulged due to the presence of large particles, resulting in poor hand feel and uneven printing pattern.

4. By adopting the above technical solution, after adding the defoaming agent, the foam generated by the physical characteristics of stirring is prevented, thereby preventing the flatness and smoothness of the printing paste from being affected.

5. By adopting the above technical solution and adding the preservative and mildew preventer, the slurry can be prevented from being deteriorated and unusable due to not being used up for a long time or the undesirable storage environment, thereby causing unnecessary economic losses.

6. By adopting the above technical solution and finally adding a thickener, a reflective color-changing printing paste is made to have a consistency suitable for flat screen, round screen and manual printing, and the display effect of the paste on the fabric will not be affected by the thinness of the paste.

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