Fluoride-free super-hydrophobic coating and preparation method thereof

A technology of super-hydrophobic coatings and nanomaterials, which is applied in the field of fluorine-free super-hydrophobic coatings and its preparation, can solve the problems of high cost, and achieve the effects of low cost, easy availability of raw materials, and good mechanical properties of the coating

Active Publication Date: 2017-06-13
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is relatively simple, but the cost is higher

Method used

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  • Fluoride-free super-hydrophobic coating and preparation method thereof
  • Fluoride-free super-hydrophobic coating and preparation method thereof
  • Fluoride-free super-hydrophobic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: The functional polyacrylate block copolymer has a molecular weight of 10500 and a structure of:

[0030]

[0031] A. Preparation of functional long side chain polyacrylate block copolymer:

[0032] Add octadecyl methacrylate (OMA) 16.90 g (0.05 mol), methyl methacrylate (MMA) 1.05 g (0.01 mol), initiator α-bromoisobutyric acid ethyl in a 500 ml four-necked flask Ester (EBiB) 0.4120g (0.0021mol), catalyst CuBr 2 0.0061g (2.5×10 -5 mol), ligand PMDETA0.0433g (2.5×10 -4 mol), stannous octoate (Sn(EH) 2 )0.1519g (3.75×10 -4mol), solvent 1-methyl-2-pyrrolidone 12.0g, after mixing uniformly, nitrogen gas was passed for 1h, and reacted in 75°C oil bath for 5.5h, and the conversion rate reached 80%, and a white viscous product was obtained. Then, 4.20 g (0.0268 mol) of N,N dimethylaminoethyl methacrylate (DMAEMA) was added into the reaction vessel, and the reaction was continued for 2 hours to obtain a functional polyacrylate block copolymer.

[0033] B. Pre...

Embodiment 2

[0037] Example 2: The functional polyacrylate block copolymer has a molecular weight of 12500 and a structure of:

[0038]

[0039] A. Preparation of functional polyacrylate block copolymer:

[0040] In a 500ml four-necked flask, add octadecyl acrylate (OA) 16.90g (0.05mol), ethyl methacrylate (EMA) 1.20g (0.011mol), initiator α-bromo ethyl isobutyrate ( EBiB) 0.3296g (0.0017mol), catalyst CuBr 2 0.0092g (4.11×10 -5 mol), ligand PMDETA0.0734g (4.25×10 -4 mol), stannous octoate (Sn(EH) 2 )0.3038g (7.5×10 -4 mol), solvent toluene 10.0g, after mixing uniformly, nitrogen gas was passed for 1h, and reacted in 72°C oil bath for 5.5h, and the conversion rate reached 80%, and a white viscous product was obtained. Then, 3.40 g (0.022 mol) of N,N dimethylaminoethyl methacrylate (DMAEMA) was added into the reaction vessel, and the reaction was continued for 5 hours to obtain a functional polyacrylate block copolymer.

[0041] B. Preparation of Hydrophobic Particles

[0042] 2.5...

Embodiment 3

[0045] Embodiment 3: The molecular weight of the functional polyacrylate block copolymer is 14500, and the structure is:

[0046]

[0047] A. Preparation of functional polyacrylate block copolymer:

[0048] Add hexadecyl acrylate (HDMA) 15.24g (0.05mol), ethyl methacrylate (EMA) 1.93g (0.017mol) in the 500ml four-necked flask, initiator α-bromo ethyl isobutyrate ( EBiB) 0.3296g (0.0017mol), catalyst CuBr 2 0.0061g (2.5×10 -5 mol), ligand PMDETA0.0433g (2.5×10 -4 mol), stannous octoate (Sn(EH) 2 )0.3038g (7.5×10 -4 mol), solvent anisole 15.0g, after mixing uniformly, nitrogen gas was passed for 1h, and then reacted in 75°C oil bath for 6.0h, after the conversion rate reached 80%, a white viscous product was obtained. Then, 7.72 g (0.054 mol) of N,N dimethylaminoethyl acrylate (DMAEA) was added into the reaction vessel, and the reaction was continued for 4 hours to obtain a functional polyacrylate block copolymer.

[0049] B. Preparation of Hydrophobic Particles

[005...

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Abstract

The invention relates to a fluoride-free super-hydrophobic coating. The fluoride-free super-hydrophobic coating contains the following components by weight percent: 5%-50% of a long side chain polyacrylate segmented copolymer, 5%-50% of a nanometer or micron material and 0-90% of resin, wherein the long side chain polyacrylate segmented copolymer is prepared from long side chain polyacrylate monomers and functional acrylate monomers through polymerization. The invention further relates to a preparation method of the fluoride-free super-hydrophobic coating. The fluoride-free super-hydrophobic coating has the beneficial effects that a preparation method of the coating is simple, high temperature and pressure are not required, and the raw materials are easily available; by utilizing fluoride-free acrylate monomers, the environmental pollution is relatively low, and the cost is relatively low; and the coating can be sprayed to a substrate and is applicable to various clean substrates, and a solvent volatilizes at room temperature, so that the substrates have the super-hydrophobic property, and the mechanical performance of the coating is relatively good.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to a fluorine-free super-hydrophobic coating and a preparation method thereof. Background technique [0002] In recent years, the special properties of hydrophobic materials have attracted great attention, such as self-cleaning, hydrophobic, antifouling and other properties, and these unique properties have good application prospects in many aspects. Applying hydrophobic materials to ships and fuel storage tanks can achieve anti-corrosion and anti-fouling effects; applying to electronic components can effectively reduce the corrosion rate by air; applying to high-rise buildings can reduce the cleaning frequency of buildings, Reduce management costs and risks of high-altitude operations, etc. [0003] However, the current super-hydrophobic coatings with excellent performance are mainly made of fluorine-containing materials or silicon-containing materials. These materials have excellent perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D153/00C09D167/08C09D175/04C09D133/08C09D7/12C08F293/00
CPCC08F293/00C08K3/22C08K2003/2241C08K2201/011C09D7/61C09D153/005C08L33/08C08L67/08C08K3/36C08K2003/2296C08L75/04
Inventor 李宁程小雨赵靓王海涛税粒珂李坚朱冠南
Owner CHANGZHOU UNIV
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