Antibacterial anti-ultraviolet thermochromic wax painting pigment and preparation method thereof

A thermochromic and anti-ultraviolet technology, applied in the field of pigments, can solve the problems of poor bonding fastness, precipitation, and poor wall material dispersibility, and achieve the effects of fast thermal response speed, improved thermal conductivity, and high bonding fastness.

Active Publication Date: 2021-01-29
YIWU WADOU PICTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above scheme Fe 2 o 3 It is composited with urea-formaldehyde (UF) polymers in a simple physical mixing method. Due to the poor compatibility between inorganic and organic substances and poor bonding fastness, Fe 2 o 3 The dispersion in the wall material is poor, and it is easy to precipitate in the later stage, thus affecting the function of the microcapsules

Method used

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  • Antibacterial anti-ultraviolet thermochromic wax painting pigment and preparation method thereof
  • Antibacterial anti-ultraviolet thermochromic wax painting pigment and preparation method thereof
  • Antibacterial anti-ultraviolet thermochromic wax painting pigment and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0064]A preparation method of wax color paint includes the following steps:

[0065](1) According to the mass ratio (65-75):1:(3-7), weigh the temperature control agent (fatty alcohol or lipid compound), color developing agent, organic thermochromic material, and color developing agent bisphenol A into the container Heat and stir in a water bath at 80-90°C for 1-2 hours to obtain a thermochromic compound; the organic thermochromic material is crystal violet lactone, thermosensitive red or thermosensitive green; the fatty alcohol is myristyl alcohol , The lipid compound is methyl stearate.

[0066](2) According to the mass ratio (0.8-1.2): (0.8-1.2), mix the thermosensitive color-changing compound with ethyl orthosilicate, stir at 30-45°C for 25-35 min, and add to the concentration with formamide as the solvent In the 1.1-1.2g / 80-120mL cetyltrimethylammonium bromide solution, the reaction is stirred at 1200-1500rpm for 3-5h to obtain a uniform dispersion emulsion. The solid-liquid ratio of...

Embodiment 1

[0074](1) Place 1 g of crystal violet lactone, 5 g of bisphenol A, and 70 g of tetradecanol in a beaker, heat and stir in a water bath at 90° C. for 2 hours to obtain a thermosensitive color-changing compound.

[0075](2) Add 7g of thermosensitive color-changing compound and 7g of ethyl orthosilicate into a container and mix, stir at 35°C for 35min, and add to 100mL 1.15g cetyltrimethylammonium bromide solution with formamide as solvent The reaction was carried out at 1500 rpm for 3 hours to obtain a uniform dispersion emulsion.

[0076](3) Adjust the rotation speed to 700 rpm, take 100 mL of 1 mol / L hydrochloric acid solution, add dropwise to the dispersion emulsion at 2 drops / s, and react for 5 hours to obtain a precipitate.

[0077](4) Stop stirring, keep the temperature at 50°C, mature for 18h, pour out, centrifuge, wash, and dry the product at 80°C after completion to obtain silica-coated thermochromic compound microcapsules.

[0078](5) Take 1.5 g of silica-coated thermochromic compound m...

Embodiment 2

[0083](1) Place 1g of thermosensitive red, 7g of bisphenol A, and 65g of methyl stearate in a beaker, heat and stir in a water bath at 80°C for 1.5 hours to obtain a thermosensitive compound.

[0084](2) Add 7.5g thermosensitive color-changing compound and 7.5g ethyl orthosilicate into the container and mix, stir at 40℃ for 30min, and add to 80mL 1.2g cetyltrimethyl bromide using formamide as solvent In the ammonium solution, react for 5 hours at 1200 rpm to obtain a uniform dispersion emulsion.

[0085](3) Adjust the speed to 500 rpm, take 100 mL of 1.2 mol / L hydrochloric acid solution, and add it dropwise to the dispersion emulsion at 2.5 drops / s, and react for 3 hours to obtain a precipitate.

[0086](4) Stop stirring, keep the temperature at 45°C, mature for 20h, pour out, centrifuge, wash, and dry the product at 75°C after completion to obtain silica-coated thermochromic compound microcapsules.

[0087](5) Take 1.3 g of silica-coated thermochromic compound microcapsules and mix with 100 mL...

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Abstract

The invention relates to the field of pigments, and discloses an antibacterial anti-ultraviolet thermochromic wax color painting pigment and a preparation method thereof, the wax color painting pigment comprises the following raw materials: 70-80% of beeswax, 5-10% of carnauba wax, 5-10% of dammar oil, 3-8% of oleic acid, and 1-5% of antibacterial anti-ultraviolet thermochromic microcapsules. Thewax color painting pigment disclosed by the invention contains the antibacterial anti-ultraviolet thermochromic microcapsules, the microcapsules take the nano iron oxide or hydroxyl iron oxide modified silicon dioxide composite material as a wall material to coat a thermosensitive color-changing compound, and the binding strength of the nano iron oxide or hydroxyl iron oxide and silicon dioxide ishigh; on one hand, the formed shell layer can effectively coat the thermosensitive color-changing compound to prevent leakage and improve the heat conductivity of the microcapsule, and the obtained microcapsule has excellent antibacterial activity, ultraviolet resistance and stability; and on the other hand, the iron oxide can be used as a pigment to be mixed with the color-changing microcapsules, so that more colors are generated.

Description

Technical field[0001]The invention relates to the field of pigments, in particular to an anti-bacterial, anti-ultraviolet temperature-sensitive and color-changing wax paint and a preparation method thereof.Background technique[0002]As an ancient type of painting, wax painting has maintained its unique charm in the field of art since its creation. In the contemporary art world, which is complex and contending, wax color is favored by modern artists as a special material. For example, the famous American pop artist Johns' hot wax method combined with the actual expression method. In many works of German artist Boyus, wax is used as a symbol of sustaining life and storing heat. Palladino, one of the representatives of Italian avant-garde art, has also been involved in this ancient painting technique. Wax has been integrated into the creation of works of art, has a history of the 20th century, and has been used by artists all the time to give play to its unique artistic charm.[0003]Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/06C09K9/00
CPCC09D5/06C09K9/00Y02P20/141
Inventor 龚新明于永浩张星宇徐斌
Owner YIWU WADOU PICTURE
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