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Preparation method for abrasion-resistant super-hydrophobic coating

A super-hydrophobic coating and abrasion-resistant technology, which is applied to coatings, devices for coating liquid on the surface, special surfaces, etc., can solve problems such as low adhesion and poor mechanical stability, and achieve the effect of improving wear resistance

Active Publication Date: 2020-01-14
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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  • Preparation method for abrasion-resistant super-hydrophobic coating
  • Preparation method for abrasion-resistant super-hydrophobic coating
  • Preparation method for abrasion-resistant super-hydrophobic coating

Examples

Experimental program
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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 preparation method for an abrasion-resistant super-hydrophobic coating. The preparation method comprises the following steps that acrylates copolymer and BYK-333 are mixed jointly and stirred uniformly, then a blended solution of ethyl acetate and butyl acetate is added, and adipic acid / neopentyl glycol / trimellitic anhydride copolymer, acetyl tributyl citrate, and epoxy resin are sequentially added after stirring is carried out for a moment, nitrocellulose is added to obtain a solution A; and an aluminum sheet is placed on a spin coater, a nano silicon dioxide particlesolution is immediately coated in a spinning mode after spin coating is completed, and then drying is carried out to obtain the abrasion-resistant super-hydrophobic coating. Hydrophobic modified silicon dioxide insets in the surface or an inner hole of PMMA, so that a white abrasion-resistant coating with a static WCA of 168 degrees + / -0.9 degrees and a rolling angle of less than 1 degree is obtained. The abrasion-resistant super-hydrophobic coating has the advantages of good self-cleaning effect, anti-icing and acid-alkali-resistant properties and capable of being applied to different substrates, and the above advantages provides a certain reference value for the industrial market requirement that super-hydrophobic materials has a certain mechanical stability and environmental adaptability.

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 Applications(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
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