Antibacterial and anti-ultraviolet thermosensitive color-changing wax tempera paint and preparation method thereof

A temperature-sensitive color change and anti-ultraviolet technology, applied in the field of pigments, can solve the problems of precipitation, poor bonding fastness, poor dispersion of wall materials, etc., and achieve the effect of improving thermal conductivity and preventing leakage

Active Publication Date: 2021-10-29
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 and anti-ultraviolet thermosensitive color-changing wax tempera paint and preparation method thereof
  • Antibacterial and anti-ultraviolet thermosensitive color-changing wax tempera paint and preparation method thereof
  • Antibacterial and anti-ultraviolet thermosensitive color-changing wax tempera paint and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0064] A preparation method of wax paint, comprising the following steps:

[0065] (1) Weigh the temperature control agent (fatty alcohol or lipid compound), the organic thermochromic material of the chromogen, and the bisphenol A of the chromogen in the container according to the mass ratio (65-75): 1: (3-7) , heating and stirring in a water bath at 80-90°C for 1-2 hours to obtain a heat-sensitive color-changing compound; the organic heat-changing material is crystal violet lactone, heat-sensitive red or heat-sensitive 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 heat-sensitive color-changing compound with ethyl orthosilicate, stir at 30-45°C for 25-35min, and then add to the concentration using formamide as the solvent 1.1-1.2g / 80-120mL cetyltrimethylammonium bromide solution, stirred at 1200-1500rpm for 3-5h to obtain a uniform dispersed emulsion. The solid-to-l...

Embodiment 1

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

[0075] (2) Add 7g of heat-sensitive color-changing compound and 7g of ethyl orthosilicate to the container and mix, stir at 35°C for 35min, and add to 100mL of 1.15g of hexadecyltrimethylammonium bromide solution with formamide as solvent , and reacted at 1500rpm for 3h to obtain a uniform dispersed emulsion.

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

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

[0078] (5) Mix 1.5 g of silica-coated hea...

Embodiment 2

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

[0084] (2) Add 7.5g of heat-sensitive color-changing compound and 7.5g of ethyl orthosilicate to the container and mix, stir at 40°C for 30min, add to 80mL of 1.2g of hexadecyl trimethyl bromide with formamide as solvent In the ammonium solution, react at 1200rpm for 5h to obtain a uniform dispersed emulsion.

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

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

[0087] (5) Mix 1.3 g of si...

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Abstract

The invention relates to the field of pigments, and discloses an antibacterial, anti-ultraviolet, temperature-sensitive and color-changing wax paint and a preparation method thereof. The wax paint includes the following raw materials: 70-80% of beeswax, 5-10% of carnauba wax, dammar 5‑10% oil, 3‑8% oleic acid, 1‑5% antibacterial, anti-ultraviolet and thermochromic microcapsules. The encaustic pigment of the present invention contains antibacterial, anti-ultraviolet, temperature-sensitive and color-changing microcapsules, and the microcapsules use nano-iron oxide or iron oxyhydroxide modified silica composite material as the wall material to coat the heat-sensitive color-changing compound, nano-iron oxide Or iron oxyhydroxide and silicon dioxide have high binding fastness, and the formed shell can effectively cover the heat-sensitive discoloration compound to prevent leakage, improve the thermal conductivity of the microcapsules, and the obtained microcapsules have excellent antibacterial properties. properties, UV resistance and stability; on the other hand, iron oxide itself can be used as a pigment to mix with color-changing microcapsules to produce more colors.

Description

technical field [0001] The invention relates to the field of pigments, in particular to an antibacterial and anti-ultraviolet thermosensitive color-changing wax tempera paint and a preparation method thereof. Background technique [0002] As an ancient painting, encaustic painting has maintained its unique charm in the field of art since its creation. In the contemporary art world which is complicated and contends with a hundred schools of thought, wax pastels, as a special material, are favored by modern artists. For example, Johns, a famous American pop artist, combined the hot wax method with the expressive technique of real objects. In many works of the German artist Beuys, wax is used as a symbol of sustaining life and storing heat. Palladino, one of the representatives of Italian avant-garde art, also dabbled in this ancient painting technique. Wax has been incorporated into the creation of artworks for a history of the twentieth century, and has been used by artist...

Claims

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Application Information

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Patent Type & Authority Patents(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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