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Bio-based antibacterial ultraviolet fluorescent coating and preparation method thereof

A fluorescent coating, bio-based technology, applied in luminescent coatings, antifouling/underwater coatings, coatings, etc., can solve problems such as harm to human health, and achieve the effects of low cost, simple preparation method, and short process flow

Active Publication Date: 2022-01-11
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above existing problems, the purpose of the present invention is to provide a bio-based antibacterial ultraviolet fluorescent coating, to overcome the defects of traditional inorganic fluorescent materials that cause harm to human health, and to prepare bio-based coatings that are antibacterial, green, environmentally friendly, and have renewable raw materials. UV fluorescent paint

Method used

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  • Bio-based antibacterial ultraviolet fluorescent coating and preparation method thereof
  • Bio-based antibacterial ultraviolet fluorescent coating and preparation method thereof
  • Bio-based antibacterial ultraviolet fluorescent coating and preparation method thereof

Examples

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preparation example Construction

[0040] The preparation method of bio-based antibacterial ultraviolet fluorescent coating, the preparation method is carried out according to the following steps:

[0041] S1. Dissolve 5',5-diallyl-2,2'-diphenol and 1,6-hexanedithiol in an organic solvent at room temperature at a stirring speed of 200-400r / min to obtain mixture.

[0042] Among them, the mass fraction ratio of 5',5-diallyl-2,2'-diphenol and 1,6-hexanedithiol is 65-80: 20-35, the mass fraction of solute and solvent The ratio is 10-20:80-90.

[0043]The organic solvent is one of toluene or acetone or DMSO or DMF.

[0044] S2. Add catalyst b to the mixed solution obtained in step S1, the mass fraction ratio of catalyst b to solute in S1 is 1-5:100; and raise the temperature to 60-100°C, stirring at 600-800r / min The reaction speed is 4-6h.

[0045] S3. Add the product solution obtained after the reaction in step S2 into the cyclohexane solution, stir at a speed of 500~1000r / min for 20min, and then let it stand, ...

Embodiment 1

[0055] Preparation method of bio-based antibacterial ultraviolet fluorescent coating.

[0056] According to the above preparation method:

[0057] S1. Dissolve 6.5g of 5',5-diallyl-2,2'-diphenol and 3.5g of 1,6-hexanedithiol in 90g of toluene at room temperature with a stirring speed of 200r / min , to obtain a mixed solution.

[0058] S2. Add 100mg of azobisisobutyronitrile into the mixed solvent obtained in step S1, and raise the temperature to 60°C, and react at a stirring speed of 600r / min for 6h.

[0059] S3. The product solution obtained in step S2 was added to 900 g of cyclohexane solution, stirred at a speed of 500 r / min for 20 min, and then left to stand.

[0060] S4. Remove the supernatant of the solution obtained in step S3, collect the colloidal precipitate in the lower layer, and dry at 30°C and 0.09Mpa for 30min to obtain a prepolymer.

[0061] S5. Stir the prepolymer obtained in step S4 and 1.1 g of trimethylolpropane tris(3-mercaptopropionate) at 80° C. to mix...

Embodiment 2

[0069] Preparation method of bio-based antibacterial ultraviolet fluorescent coating.

[0070] According to the above preparation method:

[0071] S1. Dissolve 8.0g of 5',5-diallyl-2,2'-diphenol and 2.0g of 1,6-hexanedithiol in 100g of toluene at room temperature with a stirring speed of 200r / min , to obtain a mixed solution.

[0072] S2. Add 500mg of azobisisobutyronitrile into the mixed solvent obtained in step S1, and raise the temperature to 100°C, and react at a stirring speed of 600r / min for 4h.

[0073] S3. The product solution obtained in step S2 was added to 1900 g of cyclohexane solution, stirred at a speed of 500 r / min for 20 min, and then left to stand.

[0074] S4. Remove the supernatant of the solution obtained in step S3, collect the colloidal precipitate in the lower layer, and dry at 30°C and 0.09Mpa for 30min to obtain a prepolymer.

[0075] S5. Stir the prepolymer obtained in step S4 and 2.5 g of trimethylolpropane tris(3-mercaptopropionate) under the con...

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Abstract

The invention relates to an ultraviolet fluorescent coating, in particular to a bio-based antibacterial ultraviolet fluorescent coating and a preparation method thereof, and belongs to a biomaterial synthesis technology. The bio-based antibacterial ultraviolet fluorescent coating is prepared by carrying out a cross-linking reaction on a prepolymer and a polythiol compound under the action of a catalyst 1, 1'-(methylenebis-4,1-phenylene)bis[2-hydroxy-2-methyl-1-acetone] (Irgacure127). Wherein the prepolymer is a linear polymer which is obtained by polymerizing 5', 5-diallyl-2, 2'-biphenol and 1, 6-hexanedithiol under the action of a catalyst azodiisobutyronitrile (AIBN). The 5', 5-diallyl-2, 2'-biphenol is derived from a bio-based compound of Magnoliaceae deciduous tree plants, and the bio-based ultraviolet fluorescent coating has the characteristics of being antibacterial, green and environment-friendly, renewable and biodegradable in raw materials, simple in process, wide in raw material source and the like; the risk of generating toxicity to a human body is avoided, and the application of the ultraviolet fluorescent coating is greatly widened.

Description

technical field [0001] The invention relates to an ultraviolet fluorescent paint, in particular to a bio-based antibacterial ultraviolet fluorescent paint and a preparation method thereof, belonging to the biomaterial synthesis technology. Background technique [0002] With the improvement of people's living standards and the emergence of new materials, the needs of people and the working environment have new requirements for printing. Fluorescent printing is playing an increasingly important role in military and police logos, anti-counterfeiting technology and stage performance clothing. At present, fluorescent printing is mostly composed of fluorescent coatings, adhesives, crosslinking agents, thickeners and other additives; among them, fluorescent coatings play a fluorescent role, and fluorescent coatings refer to coatings that can emit light when exposed to ultraviolet rays. [0003] Most of the fluorescent coatings on the market are inorganic fluorescent coatings. Ther...

Claims

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Application Information

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IPC IPC(8): C09D5/22C09D5/14C09D181/02C09D7/63
CPCC09D5/22C09D5/14C09D181/02C09D7/63C08K5/37
Inventor 杨红军王宗垒王玉丽王朝荣周应山刘欣庄燕徐卫林
Owner WUHAN TEXTILE UNIV
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