阅读说明：本技术 一种用于紫外线强度检测的纺织品色卡的制备方法 (Preparation method of textile color card for ultraviolet intensity detection ) 是由 王潮霞 杨梦凡 殷允杰 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种用于紫外线强度检测的纺织品色卡的制备方法,先制备光致变色微胶囊,将光致变色微胶囊、粘合剂、增稠剂与水调和制备成光致变色印花浆,通过印花的方法制备光致变色纺织品,以不同强度紫外线照射并对得到的颜色进行仿色,制得用于紫外线强度检测的纺织品色卡；使用时,将本发明置于阳光下照射10-20s,对比变色印花与色标的颜色,即测得阳光中紫外线强度。本发明的制备方法简便易行,制备条件温和,对设备无特殊要求,耐洗性良好,适用于各种纺织品。适用于医疗、户外防护等场景。(The invention discloses a preparation method of a textile color card for detecting ultraviolet intensity, which comprises the steps of firstly preparing photochromic microcapsules, blending the photochromic microcapsules, an adhesive, a thickening agent and water to prepare photochromic printing paste, preparing photochromic textiles by a printing method, irradiating by ultraviolet rays with different intensities and carrying out color imitation on the obtained colors to prepare the textile color card for detecting the ultraviolet intensity; when in use, the color-changing printing ink is placed under the sunlight and is irradiated for 10 to 20 seconds, and the color of the color-changing printing ink and the color code are compared, namely the ultraviolet intensity in the sunlight is measured. The preparation method of the invention is simple and easy to implement, has mild preparation conditions, has no special requirements on equipment, has good washability, and is suitable for various textiles. The method is suitable for medical treatment, outdoor protection and other scenes.)

1. A preparation method of a textile color card for detecting ultraviolet intensity is characterized by comprising the following steps:

(1) preparing a core material: mixing 3-5 parts of photochromic material, 1-3 parts of light stabilizer and 1000 parts of organic solvent by mass fraction, and dispersing by using a homogenizer or ultrasonic;

(2) preparing a wall material solution: dissolving 1 part of polymethyl methacrylate in 9-12 parts of dichloromethane by mass fraction;

(3) preparing an oil phase: mixing 1 part of core material and 8-12 parts of wall material solution by mass fraction, and dispersing by using a homogenizer or ultrasonic;

(4) preparing an aqueous phase: dissolving 1-3 parts of emulsifier in 200 parts of water in parts by mass;

(5) preparing photochromic microcapsules: adding 1-2 parts of oil phase into 30 parts of water phase according to mass fraction, uniformly dispersing, and stirring in a water bath at 32-35 ℃ for 6-8 h;

(6) preparing a photochromic slurry: dispersing 5-7 parts of photochromic microcapsule powder in 32-36 parts of water by mass fraction, mixing with 7-9 parts of adhesive and 1-2 parts of thickening agent, and stirring uniformly;

(7) manually or mechanically printing the fabric to obtain a textile color card for detecting the ultraviolet intensity;

(8) and (2) irradiating the fabric for 20s under ultraviolet light of UVI 1-15, rapidly detecting and recording the L, a and b values of the fabric after color change, carrying out color imitation by using color paste, comparing the color imitation with the fabric after the ultraviolet light irradiation again, and finely adjusting the color imitation to be used as a color code of corresponding ultraviolet intensity.

2. The preparation method according to claim 1, wherein the photochromic material in the step (1) is one or more selected from spiropyrans, spirooxazines, azo compounds, diarylethylenes and benzopyrans.

3. The method according to claim 1, wherein the organic solvent in step (1) is one of n-octane, butyl acetate, and dioctyl phthalate.

4. The preparation method of claim 1, wherein the emulsifier in step (4) is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, Tween80, Tween20 and polyvinyl alcohol.

5. The preparation method according to claim 1, wherein the thickener in step (6) is one or more of P-91, PF, KG-201, KG-203 and C-26.

6. The method according to claim 1, wherein the binder in step (6) is one or more selected from the group consisting of PT-528, PT-4000, KG-101 and KG-101B.

7. The production method according to claim 1, wherein the light stabilizer in step (1) is a hindered amine compound.

8. The method according to claim 1, wherein the printing in the step (7) comprises the following steps: and (3) scraping the slurry for 2-5 times, pre-drying at 60-90 ℃ for 5-10min, and baking at 100-160 ℃ for 2-5min to obtain the textile color card for detecting the ultraviolet intensity.

9. The method according to claim 1, wherein the dispersion in the step (5) is dispersed by using a homogenizer.

10. The production method according to claim 1, wherein the dispersion in the step (5) is ultrasonic dispersion.

Technical Field

The invention belongs to the field of textile printing, and particularly relates to a preparation method of a textile color card for ultraviolet intensity detection based on photochromic microcapsules.

Background

The ultraviolet ray is invisible light with wavelength range of 400-10nm in sunlight, and can be used for preventing anemia, promoting calcium absorption by synthesizing vitamin D, and eliminating bacteria and fungi on skin and human body. However, excessive irradiation of ultraviolet light is not beneficial to human bodies, and causes skin photoallergic reaction, red spots and rashes, and brings burning sensation and itching and pain sensation. Prolonged overexposure may also lead to skin cancer. The excessive ultraviolet radiation can also cause eye burn, cause eye photophobia, severe pain and lacrimation, and lead to snow blindness when the snow turns fine and works outdoors for a long time. At present, the application of some optically variable materials in appearance and anti-counterfeiting is reported. Patent CN110438818A reports a method for preparing photochromic clothes, which comprises preparing photosensitive powder into photosensitive paste, preparing photosensitive cloth by printing or dip dyeing, and making into clothes to obtain personalized, creative and interesting photochromic clothes.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a preparation method of a textile color card for detecting ultraviolet intensity.

The technical scheme is as follows: the invention relates to a preparation method of a textile color card for detecting ultraviolet intensity, which comprises the following steps:

(1) preparing a core material: mixing 3-5 parts of photochromic material, 1-3 parts of light stabilizer and 1000 parts of organic solvent by mass fraction, and dispersing by using a homogenizer or ultrasonic;

(2) preparing a wall material solution: dissolving 1 part of polymethyl methacrylate in 9-12 parts of dichloromethane by mass fraction;

(3) preparing an oil phase: mixing 1 part of core material and 8-12 parts of wall material solution by mass fraction, and dispersing by using a homogenizer or ultrasonic;

(4) preparing an aqueous phase: dissolving 1-3 parts of emulsifier in 200 parts of water in parts by mass;

(5) preparing photochromic microcapsules: adding 1-2 parts of oil phase into 30 parts of water phase by mass fraction, dispersing by a homogenizer or ultrasonic, and stirring in a water bath at 32-35 ℃ for 6-8 h;

(6) preparing a photochromic slurry: dispersing 5-7 parts of photochromic microcapsule powder in 32-36 parts of water by mass fraction, mixing with 7-9 parts of adhesive and 1-2 parts of thickening agent, and stirring uniformly;

(7) manually or mechanically printing the fabric, scraping the fabric for 2-5 times, pre-drying at 60-90 ℃ for 5-10min, and baking at 100-160 ℃ for 2-5min to obtain a textile color card for detecting the ultraviolet intensity;

(8) and (2) irradiating the fabric for 20s under ultraviolet light of UVI 1-15, rapidly detecting and recording the L, a and b values of the fabric after color change, carrying out color imitation by using color paste, comparing the color imitation with the fabric after the ultraviolet light irradiation again, and finely adjusting the color imitation to be used as a color code of corresponding ultraviolet intensity.

As a preference, the first and second liquid crystal compositions are,

the photochromic material in the step (1) is one or more of spiropyrans, spirooxazines, azo compounds, diarylethenes and benzopyrans.

The organic solvent in the step (1) is one of n-octane, butyl acetate and dioctyl phthalate.

In the step (4), the emulsifier is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, Tween80, Tween20 and polyvinyl alcohol.

In the step (6), the thickening agent is one or more of P-91, PF, KG-201, KG-203 and C-26.

In the step (6), the adhesive is one or more of PT-528, PT-4000, KG-101 and KG-101B.

In the step (1), the light stabilizer is a hindered amine compound.

The preparation method of the textile color card for detecting the ultraviolet intensity, disclosed by the invention, comprises the steps of firstly preparing photochromic microcapsules, blending the photochromic microcapsules, an adhesive, a thickening agent and water to prepare photochromic printing paste, preparing photochromic textiles by a printing method, irradiating by ultraviolet rays with different intensities and carrying out color imitation on the obtained colors to prepare the textile color card for detecting the ultraviolet intensity; when in use, the color-changing printing ink is placed under the sunlight and is irradiated for 10 to 20 seconds, and the color of the color-changing printing ink and the color code are compared, namely the ultraviolet intensity in the sunlight is measured. The photochromic microcapsules prepared by the invention have reversible color change of the color card of the textile, high response speed and certain fatigue resistance, are printed by preparing photochromic paste by using an adhesive, are printed on the surface of the textile, and are used for manufacturing a color code of corresponding ultraviolet intensity by a color imitation method. The preparation method of the textile color card for detecting the ultraviolet intensity is suitable for various fibers, is simple and easy to implement, and has no special requirements on equipment. The obtained textile color card for detecting the ultraviolet intensity has the advantages of simple and convenient use method, repeated use, good washing resistance, sensitive response to ultraviolet light and quick response.

Has the advantages that: compared with the prior art, the invention has simple and convenient use method and quick color change response, can change color after being irradiated by ultraviolet light for 5-10s, can quickly fade and change back to the original color after the ultraviolet light is removed, and can be repeatedly used. The preparation method of the invention is simple and easy to implement, has mild preparation conditions, has no special requirements on equipment, has good washability, and is suitable for various textiles. The method is suitable for medical treatment, outdoor protection and other scenes.

Drawings

FIG. 1 is a process of discoloration under UVI2 ultraviolet radiation;

FIG. 2 the process of discoloration under UV irradiation with UVI 8;

FIG. 3 shows the discoloration behavior of the fabric after washing 0-50 times.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

Example 1

A preparation method of a textile color card for detecting ultraviolet intensity comprises the following steps:

0.05g of spiropyran photochromic material and 0.01g of light stabilizer are dissolved in 10g of normal octane to prepare the core material. 1g of polymethyl methacrylate was dissolved in 10g of dichloromethane to prepare a wall material solution. And adding 2g of core material into the wall material solution, and performing ultrasonic dispersion for 10min to prepare an oil phase. Dissolving 2g of polyvinyl alcohol in 200g of water to prepare a water phase, dripping the oil phase into the water phase at room temperature, ultrasonically dispersing for 15min, heating in a water bath at 35 ℃, stirring for 6h, filtering, and drying to obtain the photochromic microcapsule.

Adding 4.2g of photochromic microcapsules into 19.5g of water, stirring for 2min, adding 5.4g of adhesive PT-528 and 0.9g of thickening agent C-26, ultrasonically dispersing for 10min, and uniformly stirring to prepare printing paste.

Manually printing the cotton fabric, scraping the pulp for 3 times, placing the cotton fabric into an oven with the temperature of 80 ℃ for pre-drying for 5min, and baking the cotton fabric at the temperature of 155 ℃ for 2 min.

And (3) irradiating the fabric for 20s under ultraviolet light of UVI 1-15, detecting and recording the L, a and b values of the discolored fabric, and performing color imitation by using color paste. And (4) comparing the imitated color with the fabric irradiated by the ultraviolet light again, and finely adjusting the imitated color to be used as a color code of corresponding ultraviolet intensity.

Example 2

A preparation method of a textile color card for detecting ultraviolet intensity comprises the following steps:

0.03g of spiropyran photochromic material and 0.01g of light stabilizer are dissolved in 10g of n-octane to prepare the core material. 1g of polymethyl methacrylate was dissolved in 9g of dichloromethane to prepare a wall material solution. Adding 1.12g of core material into the wall material solution, and performing ultrasonic dispersion for 10min to prepare an oil phase. Dissolving 1.67g of Tween80 in 333.6g of water to prepare a water phase, dripping the oil phase into the water phase at room temperature, ultrasonically dispersing for 15min, heating in a water bath at 35 ℃, stirring for 6h, filtering, and drying to obtain the photochromic microcapsule.

Adding 4.2g of photochromic microcapsules into 26.88g of water, stirring for 2min, adding 5.88g of adhesive PT-528 and 0.84g of thickening agent C-26, ultrasonically dispersing for 10min, and uniformly stirring to prepare printing paste.

Manually printing the cotton fabric, scraping the pulp for 2 times, placing the cotton fabric into a 60 ℃ oven for pre-drying for 5min, and baking the cotton fabric for 2min at 160 ℃.

And (3) irradiating the fabric for 20s under ultraviolet light of UVI 1-15, detecting and recording the L, a and b values of the discolored fabric, and performing color imitation by using color paste. And (4) comparing the imitated color with the fabric irradiated by the ultraviolet light again, and finely adjusting the imitated color to be used as a color code of corresponding ultraviolet intensity.

Example 3:

a preparation method of a textile color card for ultraviolet intensity detection, which is simple in preparation and quick in color change response, comprises the following steps:

0.05g of azo photochromic material and 0.03g of light stabilizer are dissolved in 10g of butyl acetate to prepare the core material. 1g of polymethyl methacrylate was dissolved in 12g of dichloromethane to prepare a wall material solution. Adding 1.08g of core material into the wall material solution, and performing ultrasonic dispersion for 10min to prepare an oil phase. Dissolving 3.15g of sodium dodecyl benzene sulfonate in 210g of water to prepare a water phase, dropwise adding the oil phase into the water phase at room temperature, ultrasonically dispersing for 15min, heating in a water bath at 32 ℃, stirring for 8h, filtering, and drying to obtain the photochromic microcapsule.

Adding 14g of photochromic microcapsules into 72g of water, stirring for 2min, adding 18g of adhesive KG-101 and 4g of thickening agent P-91, performing ultrasonic dispersion for 10min, and uniformly stirring to prepare printing paste.

Manually printing the polyester fabric, scraping the paste for 5 times, putting the polyester fabric into a 90 ℃ oven for pre-drying for 10min, and baking the polyester fabric for 5min at 100 ℃.

And (3) irradiating the fabric for 20s under ultraviolet light of UVI 1-15, detecting and recording the L, a and b values of the discolored fabric, and performing color imitation by using color paste. And (4) comparing the imitated color with the fabric irradiated by the ultraviolet light again, and finely adjusting the imitated color to be used as a color code of corresponding ultraviolet intensity.

Example 4:

a preparation method of a textile color card for ultraviolet intensity detection, which is simple in preparation and quick in color change response, comprises the following steps:

0.04g of spirooxazine photochromic material and 0.02g of light stabilizer are dissolved in 10g of dioctyl phthalate to prepare the core material. 1g of polymethyl methacrylate was dissolved in 10g of dichloromethane to prepare a wall material solution. Adding 1.1g of core material into the wall material solution, and performing ultrasonic dispersion for 10min to prepare an oil phase. Dissolving 1.82g of sodium dodecyl sulfate in 363g of water to prepare a water phase, dripping the oil phase into the water phase at room temperature, ultrasonically dispersing for 15min, heating in a water bath at 34 ℃, stirring for 7h, filtering, and drying to obtain the photochromic microcapsule.

Adding 6g of photochromic microcapsules into 34g of water, stirring for 2min, adding 8g of adhesive PT-528 and 1.5g of thickening agent KG-203, performing ultrasonic dispersion for 15min, and uniformly stirring to prepare printing paste.

And (3) carrying out flat screen printing on the polyester fabric, scraping the paste for 4 times, putting the polyester fabric into a 70 ℃ oven for pre-drying for 5min, and baking the polyester fabric at 120 ℃ for 5 min.

And (3) irradiating the fabric for 20s under ultraviolet light of UVI 1-15, detecting and recording the L, a and b values of the discolored fabric, and performing color imitation by using color paste. And (4) comparing the imitated color with the fabric irradiated by the ultraviolet light again, and finely adjusting the imitated color to be used as a color code of corresponding ultraviolet intensity.

Example 5

The difference from example 1 is that 0.35g of spirooxazine photochromic material and 0.01g of light stabilizer were dissolved in 10g of butyl acetate to prepare a core material.

Example 6

The difference from example 1 is that 0.45g of the azo compound-based photochromic material was dissolved in 10g of dioctyl phthalate to prepare a core material.

Example 7

The difference from the example 1 is that 14g of photochromic microcapsules are added into 72g of water and stirred for 2min, 18g of adhesive KG-101 and 4g of thickening agent P-91 are added, ultrasonic dispersion is carried out for 10min, and the mixture is stirred uniformly to prepare printing paste. Manually printing the polyester fabric, scraping the paste for 5 times, putting the polyester fabric into a 90 ℃ oven for pre-drying for 10min, and baking the polyester fabric for 5min at 100 ℃.

The discoloration process of the ultraviolet intensity detecting textile prepared in example 1 under the irradiation of UVI2 ultraviolet light is shown in fig. 1, and the corresponding RGB values are shown in table 1; the color change process under UVI8 ultraviolet light irradiation is shown in FIG. 2, and the corresponding RGB values are shown in Table 2. The ultraviolet intensity detection textile prepared by the invention has quick response, shows different color depths under the irradiation of ultraviolet light with different intensities, and has better indication effect.

Table 1 ultraviolet light intensity measurement of example 1 the RGB values of the textiles exposed to UVI2 ultraviolet light for various periods of time

Time/s	R	G	B	Time/s	R	G	B
								0	215	204	182	2.4	206	176	174
0.4	212	194	179	4.8	203	167	175
								0.8	211	189	178	6	203	164	175
1.2	209	184	176

Table 2 ultraviolet light intensity measurement of example 1 the RGB values of the textiles exposed to UVI8 ultraviolet light for various periods of time

The discoloration property of the ultraviolet intensity detecting textile prepared in example 1 after being washed with water for 0 to 50 times according to GBT 3921-. The ultraviolet intensity detection textile prepared by the invention still has good color change performance after being washed for 30 times.