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A kind of assembled superhydrophobic coating and preparation method thereof

A super-hydrophobic coating and assembly-type technology, applied in coatings, pigmented coatings, paper coatings, etc., can solve the problems of poor wear resistance of hydrophobic coatings, achieve enhanced hydrophobic performance, firm mutual bonding, and excellent hydrophobicity Effect

Active Publication Date: 2020-09-29
CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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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 overcome the problem of poor wear resistance of hydrophobic coatings in the prior art, and provide an assembled superhydrophobic coating and its preparation method

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Prepare Inorganic Nanoparticles

[0074]Inorganic nanoparticles such as calcium carbonate, silicon dioxide, titanium dioxide, carbon black, graphene, carbon nanotubes, montmorillonite, and zinc oxide are pretreated with a titanate coupling agent or a silane coupling agent. The treatment process is as follows: pre-soak the inorganic nanoparticles with a coupling agent with a mass concentration of 0.1-5% for 5-60 minutes, and then dry them at a temperature of 20-90°C for 5-60 minutes to obtain inorganic nanoparticles pretreated by the coupling agent. particle.

[0075] Specifically, the following inorganic nanoparticles are controlled according to the following modification parameters to complete the pretreatment:

[0076]

[0077]

Embodiment 2

[0079] Prepare a low concentration low molecular weight polymer solution for the first layer

[0080] Polyethylene, polypropylene, polystyrene, dimethyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl phenyl silicone rubber, methyl vinyl trifluoropropyl silicon rubber with a molecular weight of 100 to 100,000 g / mol Rubber, polytetrafluoroethylene, polyvinylidene fluoride, etc., add 0-4 times the inorganic nanoparticles prepared in Example 1, and use a solvent to prepare a low-concentration and low-molecular-weight polymer solution for the first layer.

[0081]

Embodiment 3

[0083] Preparation of a low concentration high molecular weight polymer solution for the second layer

[0084] Polyethylene, polypropylene, polystyrene, dimethyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl phenyl silicone rubber, methyl vinyl trifluoropropyl silicone with a molecular weight of 100,000 to 2,000,000 g / mol Rubber, polytetrafluoroethylene, polyvinylidene fluoride, etc., add 0-4 times the inorganic nanoparticles prepared in Example 1, and use a solvent to prepare a low-concentration high-molecular-weight polymer solution for preparing the second layer.

[0085]

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Abstract

The invention discloses an assembled super-hydrophobic coating. The coating comprises at least three coating layer structures, wherein the multiple coating layer structures are laminated sequentially,the first layer is a coating layer close to a substrate, and each subsequent coating layer is laminated on the previous coating layer; the first layer is a low-molecular-weight polymer, and the low-molecular-weight polymer is doped with 0-4-times hydrophobic inorganic nanoparticles; the second layer and each subsequent layer are high-molecular-weight polymers, and the high-molecular-weight polymers are mixed with 0-4-times hydrophobic inorganic nanoparticles. The super-hydrophobic coating adopts the multiple composite bionic laminated layers, the low-molecular-weight polymer is located at thebottom close to the substrate layer and has good binding force with the substrate layer, and then multiple high-molecular-weight polymer film layers are sequentially assembled, so that the super-hydrophobic coating has good binding force, structures of the layers are mutually buffered, and the coating has good toughness, and cannot be damaged under the action of mechanical friction damage.

Description

technical field [0001] The invention belongs to novel hydrophobic materials, in particular to an assembled superhydrophobic coating and a preparation method thereof, and belongs to the technical field of composite material processing. Background technique [0002] Due to its low surface energy, hydrophobic materials make it difficult for aqueous solutions to adhere to their surfaces, and can achieve excellent properties such as self-cleaning and non-contamination of the surface of the material, which is of great help in keeping the surface of the device and equipment clean. [0003] The existing preparation methods of hydrophobic materials include biomimetic synthesis, transfer printing of biological materials, artificial synthesis design, etc., but the hydrophobic materials prepared above usually have many limitations. The main defect is that these hydrophobic materials are not strong enough and are very easy to damage. Thus losing the original hydrophobic and super-hydroph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/13D21H17/12D21H19/56D21H19/38D21H19/62D21H19/82D06M13/02C09D123/12C09D125/06C09D7/61D06N3/00D06N3/04
CPCC08K3/36C08K2003/2241C08K2201/011C09D123/12C09D125/06D06M13/02D06N3/0006D06N3/0009D06N3/0011D06N3/0022D06N3/045D06N3/047D21H17/12D21H17/13D21H19/38D21H19/385D21H19/56D21H19/62D21H19/82
Inventor 何周坤李秀云唐昶宇喻永连梅军
Owner CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS