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Superhydrophobic coating containing hollow glass beads and preparation method thereof

A technology of hollow glass microspheres and super-hydrophobic coating, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of cumbersome preparation process of super-hydrophobic coating and inability to achieve large-scale application.

Inactive Publication Date: 2019-02-01
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hollow glass microsphere superhydrophobic coating and its preparation method in view of the current superhydrophobic coating preparation process is cumbersome and can not achieve large-scale application

Method used

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  • Superhydrophobic coating containing hollow glass beads and preparation method thereof
  • Superhydrophobic coating containing hollow glass beads and preparation method thereof
  • Superhydrophobic coating containing hollow glass beads and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Modification of hollow glass microspheres: 1.8 g of n-octyltriethoxysilane was dissolved in a mixed solution of ethanol-deionized water (the mass fraction of ethanol was 95%), and the temperature was raised to 60° C. after stirring evenly. Add 18.0 g of hollow glass microspheres and continue to stir and react for 4 hours, then dry to obtain surface hydrophobized hollow glass microspheres.

[0020] (2) Preparation of brushing solution: 1. Prepare polyurethane solution according to the mass ratio of polyurethane elastomer and organic solvent 1:6; 2. Prepare polyvinylidene fluoride according to the mass ratio of polyvinylidene fluoride and N-methylpyrrolidone 1:20 Vinyl fluoride solution; 3. Weigh the polyurethane solution and polyvinylidene fluoride solution according to the mass ratio of polyurethane elastomer and polyvinylidene fluoride 6:3 and magnetically stir to obtain a polymer mixed solution A; 4. According to the modified hollow glass micro The mass ratio of t...

Embodiment 2

[0023] (1) Modification of hollow glass microspheres: Dissolve 1.5 g of n-octyltriethoxysilane in a mixed solution of ethanol-deionized water (ethanol mass fraction is 85%), stir evenly and heat up to 60°C. Add 15.0 g of hollow glass microspheres and continue to stir and react for 4 hours, then dry to obtain surface hydrophobized hollow glass microspheres.

[0024] (2) Preparation of brushing solution: 1. Prepare polyurethane solution according to the mass ratio of polyurethane elastomer and organic solvent 1:5; 2. Prepare polyvinylidene fluoride according to the mass ratio of polyvinylidene fluoride and N-methylpyrrolidone 1:20 Vinyl fluoride solution; 3. Weigh the polyurethane solution and polyvinylidene fluoride solution according to the mass ratio of polyurethane elastomer and polyvinylidene fluoride 6:1 and magnetically stir to obtain a polymer mixed solution A; 4. According to the modified hollow glass micro The mass ratio of the solute (polyurethane elastomer + polyviny...

Embodiment 3

[0027] (1) Modification of hollow glass microspheres: Dissolve 2.0 g of perfluorodecyltriethoxysilane in a mixed solution of ethanol-deionized water (the mass fraction of ethanol is 90%), stir evenly and heat up to 70°C . Add 20.0 g of hollow glass microspheres and continue to stir and react for 3 hours, then dry to obtain surface hydrophobized hollow glass microspheres.

[0028] (2) Preparation of brushing solution: 1. Prepare polyurethane solution according to the mass ratio of polyurethane elastomer and organic solvent 1:7; 2. Prepare polyvinylidene fluoride according to the mass ratio of polyvinylidene fluoride and N-methylpyrrolidone 1:18 Vinyl fluoride solution; 3. Weigh the polyurethane solution and polyvinylidene fluoride solution according to the mass ratio of polyurethane elastomer and polyvinylidene fluoride 6:2 and magnetically stir to obtain a polymer mixed solution A; 4. According to the modified hollow glass micro The mass ratio of the beads to the obtained pol...

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Abstract

The invention discloses a superhydrophobic coating containing hollow glass beads and a preparation method thereof. The method is characterized by comprising the steps of: (1) modifying hollow glass beads with a silane coupling agent to realize the hydrophobic performance of the hollow glass beads; (2) preparing a polyurethane solution and a polyvinylidene fluoride solution of different concentrations, and stirring the polyvinylidene fluoride solution and the polyurethane solution uniformly according to certain mass ratio to obtain a polymer solution A; (3) adding the modified hollow glass beads into the polymer solution A according to a proper mass ratio, adding a defoamer and performing stirring for 1-2h at room temperature to obtain a superhydrophobic coating solution; and (4) conductingbrush coating of the superhydrophobic coating solution on a substrate surface, and performing drying at 50-70DEG C to obtain the hollow glass bead superhydrophobic coating. The method provided by theinvention has the characteristics of simple preparation process and low cost, and can achieve large-scale application.

Description

technical field [0001] The invention relates to the field of new super-hydrophobic materials, in particular to a super-hydrophobic coating containing hollow glass microspheres and a preparation method thereof. Background technique [0002] Metals play a vital role in national defense, oil and gas pipelines, shipping, and daily life, but corrosion problems during service also bring huge economic losses and potential hazards, so metal corrosion and protection issues have always caused widespread focus on. In the process of oil and gas field exploitation and oil and gas transportation, it is often accompanied by the corrosion of carbon dioxide. If the corrosion inspection of oil and casing is not timely, unexpected safety accidents may be caused due to pipeline perforation. Generally, electrochemistry and coating are used to carry out metal anti-corrosion work, and coating anti-corrosion is more convenient. [0003] Applying a coating on the surface of the metal substrate to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D127/16C09D7/62
CPCC09D7/62C09D7/70C09D175/04C08L27/16C08K9/06C08K7/28
Inventor 唐鋆磊王吉星王莹莹王虎张海龙李湉张晟伟
Owner SOUTHWEST PETROLEUM UNIV
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