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A self-cleaning reflective coating based on strawberry microspheres and its preparation method

A reflective coating, strawberry-shaped technology, applied in the field of self-cleaning reflective coating materials and their preparation, achieves the effects of long-term retention of reflection effect, simple preparation process, and environmental protection in the preparation process

Active Publication Date: 2020-05-05
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although coatings with self-cleaning functions can be prepared by various methods, there is no report on self-cleaning reflective coatings, and self-cleaning reflective coatings will have potential industrial application prospects

Method used

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  • A self-cleaning reflective coating based on strawberry microspheres and its preparation method
  • A self-cleaning reflective coating based on strawberry microspheres and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) In a 100ml beaker, first add 2 parts by mass of 1-6 hexanediol diacrylate, 0.5 parts by mass of tridecafluorooctyl methacrylate, and 1 part by mass of heptadecylfluorodecyltrimethoxysilane. After uniform ultrasonic mixing, 0.1 parts by mass of photoinitiator 1173, 50 parts by mass of water and 2 parts by mass of titanium dioxide sol were added, and mixed by ultrasonication for 30 minutes. Then add 0.2 parts by mass of sodium dodecylbenzenesulfonate therein, and sonicate for 10 minutes. The resulting solution was irradiated under ultraviolet light for 2 min to obtain strawberry-shaped microspheres.

[0033] (2) Mix 30 parts by mass of strawberry microspheres obtained in step (1), 1 part by mass of defoamer and 60 parts by mass of silicone resin in a beaker, and stir for 15 minutes at a rate of 500 r / min to obtain a water-based superhydrophobic coating. Finally, the paint was coated on the aluminum plate with a wire rod, and dried at room temperature for 2 hours to ...

Embodiment 2

[0036] (1) 2 parts by mass of styrene, 0.6 parts by mass of n-hexadecane, 0.2 parts by mass of divinylbenzene, and 0.08 parts by mass of azobisisobutyronitrile were first added to a 500 ml beaker. After uniform ultrasonic mixing, 170 parts by mass of water and 1.5 parts by mass of titanium dioxide sol were added, and mixed by ultrasonication for 30 minutes. After stirring and reacting for 12 hours under the condition of 75° C., strawberry-shaped microspheres can be obtained.

[0037] (2) Mix 35 parts by mass of strawberry microspheres obtained in step (1), 2 parts by mass of defoamer and 60 parts by mass of fluorocarbon resin in a beaker, and stir for 15 minutes at a rate of 500 r / min to obtain a water-based superhydrophobic coating. Finally, the paint was coated on the aluminum plate with a wire rod, and dried at room temperature for 2 hours to obtain a superhydrophobic reflective coating.

[0038] The self-cleaning reflective coating obtained in this embodiment has a conta...

Embodiment 3

[0040] (1) Add 15 parts by mass of ethanol and 0.5 parts by mass of ammonia water to 30 parts by mass of polystyrene microsphere dispersion, keep stirring evenly in a water bath, then slowly add 15 parts by mass of ethanol and 2.5 parts by mass of isopropyl titanate The mixture of esters, after the dropwise addition, was continuously stirred and reacted for 6 hours to obtain strawberry microspheres.

[0041] (2) 35 parts by mass of strawberry microspheres obtained in step (1) were mixed with 55 parts by mass of silicone-modified polyurethane resin in a beaker, and stirred for 15 min at a speed of 500 r / min to obtain a water-based superhydrophobic coating. Finally, it is sprayed on an aluminum plate and dried at room temperature for 4 hours to obtain a superhydrophobic reflective coating.

[0042] The self-cleaning reflective coating obtained in this embodiment has a contact angle of 155° and a reflectivity of 98% for heat reflection rays.

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Abstract

The invention relates to a self-cleaning reflecting coating layer based on strawberry-form microspheres and a preparation method of the self-cleaning reflecting coating layer. The self-cleaning reflecting coating layer contains the following components in percentage by weight: 5wt%-40wt% of strawberry-form microspheres, 20wt%-60wt% of water-base resin, 0.5wt%-5wt% of an aid and 5wt%-30wt% of deionized water Due to the hydrophobicity and high refraction index of titanium dioxide nanoparticles on the surfaces of the strawberry-form microspheres, the coating layer has a super-hydrophobic self-cleaning function and a reflective insulation effect. The preparation method is simple, the process is environment-friendly, and the coating layer can be used outdoors for a long time and has wide industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of coating material preparation, and in particular relates to a self-cleaning reflective coating material based on strawberry microspheres and a preparation method thereof. Background technique [0002] Domestic research and production of thermal insulation and cooling coatings are mainly aimed at the construction industry, industrial equipment, aviation and other fields. The use of reflective coatings is the most common and the most common and simple method. Now people begin to use a large number of reflective coatings outdoors to resist strong solar radiation, but these coatings are easy to be contaminated with a lot of dust and affect their reflection effect, so the development of reflective coatings with self-cleaning functions will have strong market competition force. [0003] At present, there have been some reports on the preparation methods of self-cleaning coatings. Patent CN105153866A reports a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D127/12C09D175/04C09D5/33C09D5/16
CPCC08K9/04C08K9/06C08K2003/2241C08K2201/011C09D5/004C09D7/70C09D127/12C09D175/04C09D183/04
Inventor 陈坤林顾坤王潮霞殷允杰
Owner JIANGNAN UNIV
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