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A kind of superhydrophobic coating and preparation method thereof

A technology of super-hydrophobic coatings and nanomaterials, applied in the field of super-hydrophobic coatings and its preparation, can solve problems such as poor hydrophobicity, and achieve good compatibility, good hydrophobicity, and controllable molecular structure and composition

Active Publication Date: 2017-07-14
创科云涂节能新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The characteristics of this method are that the preparation method is simple and the coating film performance is good, but its contact angle can only reach 130°, and its hydrophobicity is very poor.

Method used

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  • A kind of superhydrophobic coating and preparation method thereof
  • A kind of superhydrophobic coating and preparation method thereof
  • A kind of superhydrophobic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the molecular weight of fluorine-containing block copolymer is 10000, and the structure is:

[0031]

[0032] Wherein, m=13, n=50.

[0033] A. Preparation of fluorine-containing block copolymers

[0034] Add 15.7 g of 2-(N,N-dimethylamino)ethyl methacrylate (DMAEMA), 0.3880 g of α-bromoisobutyrate (EBiB) and 0.3880 g of CuBr into a 500 ml four-necked flask. 2 0.0183g, pentamethyldiethylenetriamine (PMDETA) 0.1301g, stannous octoate Sn(EH) 2 0.3038g, solvent toluene 7.85g, after mixing uniformly, nitrogen gas was passed for 2h, and reacted in an oil bath at 80°C for 5h. After the conversion rate reached 85%, a light yellow viscous product was obtained. Then, 4.2 g of trifluoroethyl methacrylate (TFEMA) was added into the reaction vessel, and the reaction was continued for 4 hours. After the reaction, a yellow viscous substance, namely a fluorine-containing block copolymer, was obtained.

[0035] B. Preparation of Superhydrophobic Coatings

[0036] 1....

Embodiment 2

[0042] Embodiment 2: the molecular weight of fluorine-containing block copolymer is 12000, and the structure is:

[0043]

[0044] Wherein, m=10, n=60.

[0045] A. Preparation of fluorine-containing block copolymers

[0046] Add DMAEMA 15.7g, EBiB 0.3232g, CuBr 2 0.0122g, PMDETA0.08675g, Sn(EH) 2 0.3038g, 7.85g of toluene, after mixing evenly, after passing nitrogen for 2 hours, reacting in an oil bath at 80°C for 5 hours, the conversion rate reached 83%, and a light yellow viscous product was obtained. Then, 4.1667 g of hexafluorobutyl methacrylate (HFBMA) was added into the reaction vessel, and the reaction was continued for 4 hours. After the reaction, a yellow viscous substance, namely a fluorine-containing block copolymer, was obtained.

[0047] B. Preparation of Superhydrophobic Coatings

[0048] 1. 2-(N,N-dimethylamino)ethyl methacrylate-b-polyhexafluorobutyl methacrylate block copolymer / nano-CaCO 3 Preparation of hybrid materials

[0049] The fluorine-containi...

Embodiment 3

[0054] Embodiment 3: the molecular weight of fluorine-containing block copolymer is 12000, and the structure is:

[0055]

[0056] Wherein, m=6, n=60.

[0057] A. Preparation of fluorine-containing block copolymers

[0058] Add DMAEMA15.7g, EBiB 0.3232g, CuBr 2 0.0244g, PMDETA0.1733g, Sn(EH) 2 0.6076g, 7.85g of toluene, mixed evenly, nitrogen gas for 2h, reacted in 80°C oil bath for 5h, the conversion rate reached 86%, and a light yellow viscous product was obtained. Then, 4.0 g of dodecafluoroheptyl methacrylate (DFHMA) was added into the reaction vessel, and the reaction was continued for 4 hours. After the reaction, a yellow viscous substance, namely a fluorine-containing block copolymer, was obtained.

[0059] B. Preparation of Superhydrophobic Coatings

[0060] 1. N, N-dimethylaminoethyl methacrylate-b-polydodecafluoroheptyl methacrylate block copolymer / nano-TiO 2 Preparation of hybrid materials

[0061] The fluorine-containing block copolymer obtained in step A ...

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Abstract

The invention relates to a super-hydrophobic coating. The super-hydrophobic coating comprises the following constituents in mass percent: 5-15% of a fluorine-containing segmented copolymer, 70-85% of a nanometer or micron material, and 10-15% of resin, wherein the fluorine-containing segmented copolymer is a copolymer of a monomer and a fluorinated acrylate monomer, a functional acrylate monomer, or a mixture of the functional acrylate monomer and an acrylate monomer. The preparation method of the super-hydrophobic coating comprises the following steps: preparing the fluorine-containing segmented copolymer, and preparing the super-hydrophobic coating. The super-hydrophobic coating has the benefits as follows: (1) the molecular weight of the fluorine-containing segmented copolymer synthesized by the ARGET ATRP method is controllable and narrow in distribution, and the molecular structure and the composition are controllable; compared with the random fluorocarbon resin, the fluorine-containing segmented copolymer can achieve the same properties, and the usage amount of the fluorine-containing monomer is small; (2) the fluorine-containing segmented copolymer is good in mixing compatibility with an inorganic substance hybrid material and other resins; the obtained coating is good in hydrophobicity, and excellent in paint film overall performance.

Description

technical field [0001] The invention relates to a superhydrophobic coating and a preparation method thereof. Background technique [0002] Superhydrophobic surfaces have broad application prospects in many fields due to their hydrophobic, anti-fouling, anti-corrosion, and anti-oxidation properties. The hydrophobic and anti-fouling properties of the super-hydrophobic surface can be used to coat the surface of inorganic non-metallic materials such as glass, ceramics, and cement to achieve self-cleaning of the substrate; the super-hydrophobic coating can be used to isolate the environment The water, oxygen and other substances that are easy to cause metal corrosion can realize the corrosion resistance of the metal surface; the hydrophobic and antifouling properties of the superhydrophobic surface can be used to coat the surface of the textile to prepare textiles with antifouling ability. [0003] In the prior art, the techniques for preparing superhydrophobic coatings mainly i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D153/00C09D133/00C09D167/08C09D175/04C09D7/12C08F293/00
CPCC08F293/00C09D7/61C09D153/00C08L33/00C08K2003/2237C08K2003/265C08K2003/2296
Inventor 李坚朱冠南任强汪称意
Owner 创科云涂节能新材料科技(苏州)有限公司