Temperature-sensitive composition as well as preparation method and application thereof

Abstract

The invention discloses a novel temperature-sensitive color-changing composition as well as a preparation method and application thereof. The composition comprises 5%-20% of an inorganic pigment A, 0.5%-4% of a dispersing agent, 1%-7% of a wetting agent, 0.01%-5% of an anti-settling agent, 2%-4% of a thickening agent, 0.1%-3% of a surfactant and the balance of a solvent. According to the invention, the surface performance of the pigment is changed, the hydrophilicity and the stability in water are improved, and an inorganic material which can be applied to color temperature-sensitive color-changing intelligent glass is obtained. The inorganic pigment disclosed by the invention can be applied to glass, the permeability of the obtained glass is greatly improved, and the influence on lighting is smaller; and the color of the glass can change along with the change of the surface temperature of the glass in a certain temperature range, so that the application range of the inorganic pigment is widened.

Description

technical field

[0001] The invention relates to the field of building materials, in particular to a novel temperature-sensitive color-changing material and a preparation method and application thereof. Background technique

[0002] A smart thermochromic material is a material that changes color as the temperature rises or falls. Because of its free color selection, reversible discoloration, low discoloration temperature, long life and high sensitivity, it is widely used in the fields of architecture, industrial design, clothing design and packaging design. Most of the intelligent temperature-sensitive color-changing materials in the prior art are organic pigments. Although organic pigments can make products have high permeability, their outdoor aging resistance is extremely poor, so they cannot be exposed to outdoor conditions for a long time.

[0003] Inorganic pigments have the characteristics of light resistance, heat resistance, weather resistance, good solvent resistan...

Examples

Embodiment 1

[0022] Weigh 10g iron yellow (particle size 800nm), 0.1gNP-10, 0.2g lauric acid, 30g deionized water, 0.05g sodium dodecyl sulfate in a ball milling jar, and set the ball milling speed to 250r / min. Take it out and place it in a 500ml beaker; dissolve 0.5g of methylcellulose in 30g of aqueous solution, after it is completely dissolved, add 0.1g of fumed silica, stir it evenly, pour it into the above 500ml beaker and mix it with the pigments at high speed. Stir at 300r / min, and mix it evenly to obtain iron yellow slurry;

[0023] Weigh 100g of temperature-sensitive aqueous system solution for standby, take 0.2g of the above-mentioned iron yellow slurry, add 1g of deionized water, and place it in an ultrasonic machine for ultrasonic dispersion for 30min; after dispersion, add it to the aqueous system solution under stirring, and stir After 5 minutes, vacuum defoaming; add the initiator azodiisobutylamidine hydrochloride in aqueous solution (the amount added is 0.1‰ of the mass of...

Embodiment 2

[0025] Weigh 10g iron yellow (particle size 800nm), 0.1gNP-10, 0.2g lauric acid, 30g deionized water, and 0.05g sodium dodecyl sulfate in a ball milling jar. The ball milling speed is set to 250r / min. Take it out and place it in a 500ml beaker; dissolve 0.5g of methylcellulose in 30g of aqueous solution, after it is completely dissolved, add 0.1g of fumed silica, stir it evenly, pour it into the above 500ml beaker and mix it with the pigments at high speed. Stir at 300r / min, and mix it evenly to obtain iron yellow slurry;

[0026] Weigh 100g of temperature-sensitive aqueous system solution for standby, take 0.2g of the above-mentioned iron yellow slurry, add 1g of deionized water, and place it in an ultrasonic machine for ultrasonic dispersion for 30min; after dispersion, add it to the aqueous system solution under stirring, and stir After 5 minutes, vacuum defoaming; add the initiator azodicyanovaleric acid of the aqueous solution (the amount added is 0.5‰ of the mass of the ...

Embodiment 3

[0028] Combining the results of case 1 and case 2, using the color standard of case 1, the color paste of case 2 was used to adjust the same color as that of case 1, and the parameter values ​​were compared; 1 For glass of the same color, the visible light transmittances of the glass at 25°C and 47°C are 60.223% and 45.211%, respectively. The permeability of the sample has been significantly improved, and the permeability is more excellent.

technical field

[0001] The invention relates to the field of building materials, in particular to a novel temperature-sensitive color-changing material and a preparation method and application thereof. Background technique

[0002] A smart thermochromic material is a material that changes color as the temperature rises or falls. Because of its free color selection, reversible discoloration, low discoloration temperature, long life and high sensitivity, it is widely used in the fields of architecture, industrial design, clothing design and packaging design. Most of the intelligent temperature-sensitive color-changing materials in the prior art are organic pigments. Although organic pigments can make products have high permeability, their outdoor aging resistance is extremely poor, so they cannot be exposed to outdoor conditions for a long time.

[0003] Inorganic pigments have the characteristics of light resistance, heat resistance, weather resistance, good solvent resistan...

Examples

Embodiment 1

[0022] Weigh 10g iron yellow (particle size 800nm), 0.1gNP-10, 0.2g lauric acid, 30g deionized water, 0.05g sodium dodecyl sulfate in a ball milling jar, and set the ball milling speed to 250r / min. Take it out and place it in a 500ml beaker; dissolve 0.5g of methylcellulose in 30g of aqueous solution, after it is completely dissolved, add 0.1g of fumed silica, stir it evenly, pour it into the above 500ml beaker and mix it with the pigments at high speed. Stir at 300r / min, and mix it evenly to obtain iron yellow slurry;

[0023] Weigh 100g of temperature-sensitive aqueous system solution for standby, take 0.2g of the above-mentioned iron yellow slurry, add 1g of deionized water, and place it in an ultrasonic machine for ultrasonic dispersion for 30min; after dispersion, add it to the aqueous system solution under stirring, and stir After 5 minutes, vacuum defoaming; add the initiator azodiisobutylamidine hydrochloride in aqueous solution (the amount added is 0.1‰ of the mass of...

Embodiment 2

[0025] Weigh 10g iron yellow (particle size 800nm), 0.1gNP-10, 0.2g lauric acid, 30g deionized water, and 0.05g sodium dodecyl sulfate in a ball milling jar. The ball milling speed is set to 250r / min. Take it out and place it in a 500ml beaker; dissolve 0.5g of methylcellulose in 30g of aqueous solution, after it is completely dissolved, add 0.1g of fumed silica, stir it evenly, pour it into the above 500ml beaker and mix it with the pigments at high speed. Stir at 300r / min, and mix it evenly to obtain iron yellow slurry;

[0026] Weigh 100g of temperature-sensitive aqueous system solution for standby, take 0.2g of the above-mentioned iron yellow slurry, add 1g of deionized water, and place it in an ultrasonic machine for ultrasonic dispersion for 30min; after dispersion, add it to the aqueous system solution under stirring, and stir After 5 minutes, vacuum defoaming; add the initiator azodicyanovaleric acid of the aqueous solution (the amount added is 0.5‰ of the mass of the ...

Embodiment 3

[0028] Combining the results of case 1 and case 2, using the color standard of case 1, the color paste of case 2 was used to adjust the same color as that of case 1, and the parameter values ​​were compared; 1 For glass of the same color, the visible light transmittances of the glass at 25°C and 47°C are 60.223% and 45.211%, respectively. The permeability of the sample has been significantly improved, and the permeability is more excellent.

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