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Preparation method of superhydrophobic coating with favorable binding force with polyolefins

A technology of super-hydrophobic coating and polyolefin, which is applied in the direction of coating, etc., can solve the problems of insufficient scratch resistance and hydrophobic durability of the coating, and insufficient adhesion of the super-hydrophobic coating to achieve good adhesion. Effect

Inactive Publication Date: 2017-05-10
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since siloxane and polyolefin are not easy to produce chemical bonds, the adhesion of the superhydrophobic coating obtained by simply modifying the surface of polyolefin with fluorine-containing siloxane is not good enough, and the scratch resistance and hydrophobicity of the coating are not good enough. not durable enough
A class of titanate coupling agents can combine well with polyolefins, but there is no report of using them in polyolefin superhydrophobic coatings

Method used

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  • Preparation method of superhydrophobic coating with favorable binding force with polyolefins
  • Preparation method of superhydrophobic coating with favorable binding force with polyolefins
  • Preparation method of superhydrophobic coating with favorable binding force with polyolefins

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Experimental program
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Effect test

Embodiment 1

[0021] (1) In terms of mass components, add 100 parts of dimethylformamide, 0.5 parts of tridecafluorooctyltrimethoxysilane, 6 parts of nano-sized titanium dioxide, 2 parts of micron-sized titanium dioxide, isopropyl triiso 0.2 parts of phthaloyl titanate, after stirring evenly, ultrasonically dispersed for half an hour, and then heated and stirred at 80°C for one hour to obtain a superhydrophobic coating.

[0022] (2) Spray the superhydrophobic coating on the polypropylene plate with a spray gun, and dry it at 20° C. for 12 hours to obtain a superhydrophobic coating.

Embodiment 2

[0026] (1) In terms of mass components, add 100 parts of dimethylformamide, 1 part of tridecafluorooctyltrimethoxysilane, 8 parts of nano-sized titanium dioxide, 4 parts of micron-sized titanium dioxide, and isopropyl tri( 0.5 part of stearoyl) titanate, stirred evenly, ultrasonically dispersed for half an hour, and then heated and stirred at 90° C. for one hour to obtain a super-hydrophobic coating.

[0027] (2) Spray the superhydrophobic coating on the polyethylene sheet with a spray gun, and dry it at 35° C. for 8 hours to obtain a superhydrophobic coating.

Embodiment 3

[0031] (1) In terms of mass components, add 100 parts of dimethylformamide, 1.5 parts of tridecafluorooctyltrimethoxysilane, 10 parts of nano-sized titanium dioxide, 6 parts of micron-sized titanium dioxide, and isopropyl tri( 0.8 parts of dioctylpyrophosphoryl) titanate were stirred evenly, ultrasonically dispersed for half an hour, and then heated and stirred at 100° C. for one hour to obtain a superhydrophobic coating.

[0032] (2) The superhydrophobic coating was sprayed on the ethylene and octene copolymer (POE) sheet with a spray gun, and dried at 50° C. for 5 hours to obtain a superhydrophobic coating.

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Abstract

The invention relates to a preparation method of a superhydrophobic coating with favorable binding force with polyolefins. The method comprises the following steps: adding 100 parts by mass of dimethylformamide, 0.5-1.5 parts by mass of tridecafluorooctyltrimethoxysilane, 6-10 parts by mass of nano titanium dioxide, 2-6 parts by mass of micron-sized titanium dioxide and 0.2-0.8 part by mass of titanate coupling agent into a beaker, uniformly stirring, carrying out ultrasonic dispersion, and stirring while heating to obtain a superhydrophobic paint; and spraying the superhydrophobic paint onto a polyolefin board by a spray gun, and drying to obtain the superhydrophobic coating. The mixture of the titanate coupling agent and fluorine-containing silane coupling agent is utilized to treat the micron-sized titanium dioxide and nano titanium dioxide; and the superhydrophobic coating, which has the advantages of favorable binding force with the polyolefin surface and scratch resistance, is obtained by spraying.

Description

technical field [0001] The invention relates to a preparation method of a superhydrophobic coating with good binding force with polyolefin. Background technique [0002] A superhydrophobic surface refers to a surface that is extremely difficult to be wetted by water, and the contact angle of water on the surface exceeds 150°. Superhydrophobic surface materials have properties such as waterproof, anti-fouling, and can reduce the viscosity of fluids. The basic principle of preparing superhydrophobic surface is to imitate the structure of lotus leaf, and construct a multi-level micro-nano structure with micron-scale concave-convex structure and nano-scale concave-convex structure on the surface of the material. The methods for constructing micro-nano structures, that is, the methods for preparing superhydrophobic surfaces, include sol-gel methods, etching methods, heterogeneous nucleation methods, template methods, electrochemical methods, self-assembly methods, and phase sepa...

Claims

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Application Information

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IPC IPC(8): C08J7/06C09D1/00C09D7/12C08L23/12C08L23/06C08L23/08
CPCC08J7/06C08J2323/06C08J2323/08C08J2323/12C09D1/00C09D7/62
Inventor 段世磊蒋彩荣张艺格马沛燕马雅楠贾渊鄢家博任强
Owner CHANGZHOU UNIV
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