Solvent-induced color change photonic crystal fabric and preparation and application thereof

Abstract

The invention relates to a solvent-induced color change photonic crystal fabric and preparation and application thereof. The preparation method comprises the steps that P(St-BA-AA) colloidal microspheres of core-shell structures are dispersed in water and ultrasonically mixed with a trace amount of acetylene black uniformly, then a mixture is uniformly loaded on the surface of a fabric, and dryingis conducted to obtain the solvent-induced color change photonic crystal fabric. The solvent-induced color change photonic crystal fabric and the preparation and application thereof have the advantages that the polyester fabric self-assembled by the colloidal microspheres shows the original black color of the fabric, the color can change when the fabric meets water or other solvents, the color ofthe fabric is different if the solvents are different, and the fabric can achieve color change without consuming external energy and has application potentials in the fields of humidity detection, counterfeiting prevention and two-dimensional code hiding.

Description

technical field

[0001] The invention belongs to the field of solvochromic materials and their preparation and application, in particular to a solvochromic photonic crystal fabric and its preparation and application. Background technique

[0002] The advanced dyeing process of fabrics or fibers makes our world colorful. The color of fabrics is not only beautiful and fashionable, but also has extremely important uses in other fields (such as military, anti-counterfeiting, and detection fields). In the modern clothing industry, the color is to cover the surface of the fabric with the dye through the dyeing and finishing process, so that the monotonous textile material has rich colors. But once these colors are formed, it is difficult to change, let alone change according to the environment and people's will, which limits its application in more fields. In recent years, with the rise of smart clothing and wearable concepts, the intelligent color change of clothing or fabrics is...

Examples

Embodiment 1

[0036]Measure 100ml of ultrapure water, 5ml of styrene, and 5ml of n-butyl acrylate into a three-necked flask, put them into an oil bath with a condensing device, set the temperature at 70°C, stir at 400rpm, and blow nitrogen for 20 minutes. Then dissolve 0.05g of potassium persulfate in 10ml of ultrapure water and add to the reaction system to initiate seed emulsion polymerization. The reaction lasts for 1h, then measure 15ml of styrene, 15ml of n-butyl acrylate, and 2ml of acrylic acid into the reaction system. After dissolving 0.2g of potassium persulfate, add it to the reaction system to initiate the next step of emulsion polymerization. The reaction lasts for 4 hours. The obtained emulsion is centrifuged and washed three times and then freeze-dried for later use. Weigh 1g of the obtained P(St-BA-AA) colloidal microspheres , ultrasonically dispersed in 3ml ultrapure water (the mass fraction of P(St-BA-AA) colloidal microspheres is 30%), then add 1.2mg of acetylene carbon bl...

Embodiment 2

[0038] Measure 100ml of ultrapure water, 5ml of styrene, and 5ml of n-butyl acrylate, weigh 0.01g of sodium dodecylbenzenesulfonate, place it in a three-necked flask, put it into an oil bath with a condensing device, and set the temperature 75°C, stirring speed 600rpm, nitrogen gas for 20min, then dissolve 0.05g potassium persulfate in 10ml ultrapure water and add to the reaction system to initiate seed emulsion polymerization, the reaction lasts 1h, then measure 15ml styrene, 15ml n-butyl acrylate, Add 2ml of acrylic acid to the reaction system, dissolve 0.2g of potassium persulfate in 20ml of ultrapure water, and then add it to the reaction system to initiate the next emulsion polymerization. The reaction lasts for 4 hours. The obtained emulsion is centrifugally washed three times and then freeze-dried for later use. Weigh 1.2 The P (St-BA-AA) colloidal microspheres that g obtains is ultrasonically dispersed in 3ml ultrapure water (the mass fraction of P(St-BA-AA) colloidal m...

Embodiment 3

[0040] Measure 100ml of ultrapure water, 5ml of styrene, and 5ml of n-butyl acrylate, weigh 0.02g of sodium dodecylbenzenesulfonate, place it in a three-necked flask, put it into an oil bath with a condensing device, and set the temperature The temperature is 80°C, the stirring speed is 800rpm, nitrogen gas is passed for 20min, and then 0.05g potassium persulfate is dissolved in 10ml ultrapure water and added to the reaction system to initiate seed emulsion polymerization. The reaction lasts for 1h, and then measure 15ml styrene, 15ml n-butyl acrylate, Add 2ml of acrylic acid to the reaction system, dissolve 0.2g of potassium persulfate with 20ml of ultrapure water, and then add it to the reaction system to initiate the next emulsion polymerization. The reaction lasts for 4 hours. The obtained emulsion is centrifugally washed three times and then freeze-dried for later use. Weigh 1.5 g obtained P (St-BA-AA) colloidal microspheres, ultrasonically dispersed in 3ml ultrapure water...

technical field

[0001] The invention belongs to the field of solvochromic materials and their preparation and application, in particular to a solvochromic photonic crystal fabric and its preparation and application. Background technique

[0002] The advanced dyeing process of fabrics or fibers makes our world colorful. The color of fabrics is not only beautiful and fashionable, but also has extremely important uses in other fields (such as military, anti-counterfeiting, and detection fields). In the modern clothing industry, the color is to cover the surface of the fabric with the dye through the dyeing and finishing process, so that the monotonous textile material has rich colors. But once these colors are formed, it is difficult to change, let alone change according to the environment and people's will, which limits its application in more fields. In recent years, with the rise of smart clothing and wearable concepts, the intelligent color change of clothing or fabrics is...

Examples

Embodiment 1

[0036]Measure 100ml of ultrapure water, 5ml of styrene, and 5ml of n-butyl acrylate into a three-necked flask, put them into an oil bath with a condensing device, set the temperature at 70°C, stir at 400rpm, and blow nitrogen for 20 minutes. Then dissolve 0.05g of potassium persulfate in 10ml of ultrapure water and add to the reaction system to initiate seed emulsion polymerization. The reaction lasts for 1h, then measure 15ml of styrene, 15ml of n-butyl acrylate, and 2ml of acrylic acid into the reaction system. After dissolving 0.2g of potassium persulfate, add it to the reaction system to initiate the next step of emulsion polymerization. The reaction lasts for 4 hours. The obtained emulsion is centrifuged and washed three times and then freeze-dried for later use. Weigh 1g of the obtained P(St-BA-AA) colloidal microspheres , ultrasonically dispersed in 3ml ultrapure water (the mass fraction of P(St-BA-AA) colloidal microspheres is 30%), then add 1.2mg of acetylene carbon bl...

Embodiment 2

[0038] Measure 100ml of ultrapure water, 5ml of styrene, and 5ml of n-butyl acrylate, weigh 0.01g of sodium dodecylbenzenesulfonate, place it in a three-necked flask, put it into an oil bath with a condensing device, and set the temperature 75°C, stirring speed 600rpm, nitrogen gas for 20min, then dissolve 0.05g potassium persulfate in 10ml ultrapure water and add to the reaction system to initiate seed emulsion polymerization, the reaction lasts 1h, then measure 15ml styrene, 15ml n-butyl acrylate, Add 2ml of acrylic acid to the reaction system, dissolve 0.2g of potassium persulfate in 20ml of ultrapure water, and then add it to the reaction system to initiate the next emulsion polymerization. The reaction lasts for 4 hours. The obtained emulsion is centrifugally washed three times and then freeze-dried for later use. Weigh 1.2 The P (St-BA-AA) colloidal microspheres that g obtains is ultrasonically dispersed in 3ml ultrapure water (the mass fraction of P(St-BA-AA) colloidal m...

Embodiment 3

[0040] Measure 100ml of ultrapure water, 5ml of styrene, and 5ml of n-butyl acrylate, weigh 0.02g of sodium dodecylbenzenesulfonate, place it in a three-necked flask, put it into an oil bath with a condensing device, and set the temperature The temperature is 80°C, the stirring speed is 800rpm, nitrogen gas is passed for 20min, and then 0.05g potassium persulfate is dissolved in 10ml ultrapure water and added to the reaction system to initiate seed emulsion polymerization. The reaction lasts for 1h, and then measure 15ml styrene, 15ml n-butyl acrylate, Add 2ml of acrylic acid to the reaction system, dissolve 0.2g of potassium persulfate with 20ml of ultrapure water, and then add it to the reaction system to initiate the next emulsion polymerization. The reaction lasts for 4 hours. The obtained emulsion is centrifugally washed three times and then freeze-dried for later use. Weigh 1.5 g obtained P (St-BA-AA) colloidal microspheres, ultrasonically dispersed in 3ml ultrapure water...

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