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A kind of preparation method of abrasion-resistant superhydrophobic coating

A super-hydrophobic coating, abrasion-resistant technology, applied in coatings, devices for coating liquids on surfaces, special surfaces, etc., can solve the problems of low adhesion, poor mechanical stability, etc., and achieve the effect of improving wear resistance

Active Publication Date: 2021-10-01
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor mechanical stability and low adhesion when coated with superhydrophobic materials on metal surfaces, the present invention uses a self-made solution to loosen the microscopic morphology of polymethyl methacrylate, and inlays the modified silica Around the polymethyl methacrylate, a super-hydrophobic coating with excellent abrasion resistance is obtained, and the coating maintains the self-cleaning performance of the super-hydrophobic coating, and also has certain anti-icing and acid resistance alkaline

Method used

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  • A kind of preparation method of abrasion-resistant superhydrophobic coating
  • A kind of preparation method of abrasion-resistant superhydrophobic coating
  • A kind of preparation method of abrasion-resistant superhydrophobic coating

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Preparation of solution A: Mix 25g of acrylic copolymer and 0.6g of BYK-333 and stir evenly, then add 50g of a blend solution of ethyl acetate and butyl acetate with a volume ratio of 3:1, stir for 5min, then add in sequence 0.15g adipic acid / neopentyl glycol / trimellitic anhydride copolymer, 0.15g acetyl tributyl citrate, 0.4g epoxy resin, stir at high speed for 30 minutes, add 24.7g nitrocellulose, stir at low speed for 10 minutes to obtain solution A.

[0032] (2) Modification of nano-silica particles: mix nano-silica particles with triethoxy-1H, 1H, 2H, 2H-tridecafluoro-N-octylsilane (triethoxy-1H, 1H , 2H, 2H-tridecafluoro-N-octylsilane (the mass concentration ratio of cyclohexane is 5%wt) solution was fully mixed for 2 hours, and the modified nano-silica particles were obtained after drying.

[0033] (3) Preparation of solution B: Add polymethyl methacrylate to tetrahydrofuran solution at 30°C and stir evenly. After heating to 45°C, add the modified nano-silica...

Embodiment 2

[0040] (1) Preparation of solution A: First mix 25g of acrylic copolymer and 0.6g of BYK-333 and stir evenly, then add 50g of a blend solution of ethyl acetate and butyl acetate with a volume ratio of 3:1, stir for 5 minutes and then Add 0.15 g of adipic acid / neopentyl glycol / trimellitic anhydride copolymer, 0.15 g of acetyl tributyl citrate, and 0.4 g of epoxy resin, stir at high speed for 45 minutes, add 24.7 g of nitrocellulose, and stir at low speed for 15 minutes to obtain solution A.

[0041] (2) Modification of nano-silica particles: mix nano-silica particles with triethoxy-1H, 1H, 2H, 2H-tridecafluoro-N-octylsilane (triethoxy-1H, 1H , 2H,2H-tridecafluoro-N-octylsilane (the mass concentration ratio of cyclohexane is 6%wt) solution is fully mixed for 2-4 hours, and the modified nano-silica particles are obtained after drying.

[0042] (3) Preparation of solution B: Add polymethyl methacrylate to tetrahydrofuran solution at 30°C and stir evenly. After heating to 45°C, add...

Embodiment 3

[0047] (1) Preparation of solution A: First mix 25g of acrylic copolymer and 0.6g of BYK-333 and stir evenly, then add 50g of a blend solution of ethyl acetate and butyl acetate with a volume ratio of 3:1, stir for 5 minutes and then Add 0.15 g of adipic acid / neopentyl glycol / trimellitic anhydride copolymer, 0.15 g of acetyl tributyl citrate, and 0.4 g of epoxy resin, stir at high speed for 30 minutes, add 24.7 g of nitrocellulose, and stir at low speed for 15 minutes to obtain solution A.

[0048] (2) Modification of nano-silica particles: mix nano-silica particles with triethoxy-1H, 1H, 2H, 2H-tridecafluoro-N-octylsilane (triethoxy-1H, 1H , 2H, 2H-tridecafluoro-N-octylsilane (the mass concentration ratio of cyclohexane is 6%wt) solution was fully mixed for 3 hours, and dried to obtain modified nano-silica particles.

[0049] (3) Preparation of solution B: Add polymethyl methacrylate into the tetrahydrofuran solution at 25°C-30°C and stir evenly. After heating to 40°C, add th...

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Abstract

The invention provides a method for preparing a abrasion-resistant super-hydrophobic coating. The acrylic copolymer and BYK-333 are mixed together and stirred evenly, then a blended solution of ethyl acetate and butyl acetate is added, and after a while of stirring, hexanediol is added in sequence Acid / neopentyl glycol / trimellitic anhydride copolymer, acetyl tributyl citrate, epoxy resin, add nitrocellulose to obtain solution A; place the aluminum sheet on a glue spinner, spin-coat with solution A, and immediately after spin-coating is completed The nano-silica particle solution is spin-coated and then dried to obtain a superhydrophobic coating with abrasion resistance. By embedding the hydrophobically modified silica into the surface or internal pores of PMMA, a white abrasion-resistant coating with a static water contact angle of 168°±0.9° and a rolling angle of less than 1° was obtained. The coating has good self-cleaning effect, anti-icing and anti-acid and alkali properties, and can be applied on different substrates, which gives a certain degree of mechanical stability and environmental adaptability to the industrial market requirements for superhydrophobic materials. reference value.

Description

technical field [0001] The invention relates to a preparation method of an abrasion-resistant superhydrophobic coating, belonging to the fields of new materials and environmental protection. Background technique [0002] In recent years, superhydrophobic surfaces with a water contact angle (WCA) greater than 150° and a sliding angle (SA) less than 10° have attracted widespread attention in science and practical applications due to their excellent self-cleaning properties, mainly in the protection of various On the material substrate, such as drag reduction, anti-icing, corrosion resistance and other properties. Superhydrophobic surfaces are inspired by a large number of natural phenomena, such as the self-cleaning effect of lotus flowers and the water repellency of butterfly wings. The methods for preparing superhydrophobic surfaces can be roughly divided into two categories: (1) designing micro-nano double-rough structures on hydrophobic surfaces (2) modifying the surface ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/08B05D7/14B05D3/10C09D133/04C09D101/18C09D7/62C09D7/63C09D7/65
CPCB05D3/102B05D5/08B05D7/14B05D2301/00B05D2320/00B05D2502/00C08K2201/011C08L2205/025C08L2205/035C09D133/04C09D7/62C09D7/63C09D7/65C08L67/02C08L63/00C08L1/18C08L33/12C08K9/06C08K3/36C08K5/11
Inventor 谭新玉杨瑷碧王嫚黄正涛王云宽
Owner CHINA THREE GORGES UNIV