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Environmentally friendly chromotropic paint with warning function and preparation method thereof

A color-changing coating and environmental protection technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as human hazards, achieve low cost, simple formula, and reduce content

Inactive Publication Date: 2017-06-30
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional interior wall coatings have good corrosion resistance, abrasion resistance, gloss, and strong adhesion, but in the past, organic solvents were generally used as dispersants, and most of the organic solvents are harmful to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Dissolve 0.01 g of 3-diethylamino-6-methyl-7-anilinofluoran in 3 mL of absolute ethanol and stir to dissolve.

[0025] 2) Add 2.5 mL of polyamino resin to step 1). After the addition is complete, stir and mix thoroughly.

[0026] 3) Add 0.0025g of anti-shrinking agent to the above mixed solution and stir for 10 minutes to obtain an environmentally friendly color-changing paint with warning function.

[0027] 4) Take the prepared paint and apply it to the dry porcelain plate, leave it for 2-3 days and wait until the paint is completely dried and shaped, then place it in an acidic environment. The paint shows black, and the color becomes darker as the acid increases. The color fades quickly in a neutral environment, but does not appear in an alkaline environment.

Embodiment 2

[0029] 1) Dissolve 0.02g of 9-(2-methylanilino)benzofluorane in 3mL of absolute ethanol and stir to dissolve.

[0030] 2) Add 2.5 mL of polyamino resin to step 1). After the addition is complete, stir and mix thoroughly.

[0031] 3) Add 0.0025g of anti-shrinking agent to the above mixed solution and stir for 10 minutes to obtain an environmentally friendly color-changing paint with warning function.

[0032] 4) Take the prepared paint and apply it to the dry porcelain plate, and place it in an acidic environment for 2-3 days after the paint is completely dried and shaped. The paint shows purple, and the color becomes darker as the acid increases. The color fades quickly in a neutral environment, but does not appear in an alkaline environment.

Embodiment 3

[0034] 1) Take 0.15g o-xylenolphthalein and dissolve it in 3mL absolute ethanol and fully stir to dissolve it.

[0035] 2) Add 2.5 mL of polyamino resin to step 1). After the addition is complete, stir and mix thoroughly.

[0036] 3) Add 0.0025g of anti-shrinking agent to the above mixed solution and stir for 10 minutes to obtain an environmentally friendly color-changing paint with warning function.

[0037] 4) Take the prepared paint and apply it on the dry porcelain plate, and place it in an acidic environment for 2-3 days after the paint is completely dried and finalized. The paint shows red, and the color becomes darker as the acid increases. The color fades quickly in a neutral environment, and does not appear in an acidic environment.

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PUM

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Abstract

The invention provides an environmental friendly chromotropic paint with warning function and a preparation method thereof. The paint comprises the following components in parts by weight: 10-30 parts of a polyurethane resin material, 20-40 parts of ethanol, 0.01-0.03 parts of an antishrinking agent, and 0.03-2 parts of triphenylmethane dyes or fluorane dyes. The preparation method comprises the following steps: adding polyurethane resin in triphenylmethane dyes or fluorane dyes dissolved by absolute ethyl alcohol, thoroughly dissolving the materials for dissolution; adding the antishrinking agent into a mixed solution, and stirring the materials to obtain the product. The most important feature of the paint is that the paint can effectively warn the superacid or superbasic environment which is harmful to human health, can keep the air circulation of working environment in time, and takes active protective measurements. The paint has the advantages of simple formula, low cost and easy production with a large scale.

Description

[0001] Technical neighborhood [0002] The invention relates to the field of coatings, in particular to an environmentally friendly color-changing coating with warning function and a preparation method thereof. Background technique [0003] With national laws and regulations restricting volatile organic compounds (VOC) and controlling environmental pollution, the development of environmentally friendly coatings has become a hot spot in the field of coating research. [0004] With the increasing demand for internal and external wall latex paint in recent years, the field of latex paint has developed rapidly. Traditional interior wall coatings have good corrosion resistance, abrasion resistance, gloss, and strong adhesion. However, the traditional interior wall coatings generally use organic solvents as dispersants, and most organic solvents are harmful to the human body. [0005] In some chemical plants, metal smelters and other production processes, a large amount of acidic or alkalin...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/08C09D7/00C09D7/12
CPCC09D175/04C08K5/1535C08K5/18C09D5/08C09D7/20C09D7/63
Inventor 杜芳芳弓晓娟吴来奇董川双少敏
Owner SHANXI UNIV
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