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A method for preparing wear-resistant superhydrophilic underwater superoleophobic surface based on swelling method

An underwater super-oleophobic and super-hydrophilic technology, which is applied in the direction of surface coating liquid devices, special surfaces, coatings, etc., can solve the cumbersome preparation process and poor wear resistance of super-hydrophilic underwater super-oleophobic surfaces and other problems, to achieve excellent mechanical stability, easy access to raw materials, and short time-consuming effects

Active Publication Date: 2019-02-05
NORTHEAST FORESTRY UNIVERSITY
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of cumbersome preparation process and poor wear resistance of the existing superhydrophilic underwater superoleophobic surface, and provides a method for preparing a wear-resistant superhydrophilic underwater superoleophobic surface based on a swelling method

Method used

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  • A method for preparing wear-resistant superhydrophilic underwater superoleophobic surface based on swelling method
  • A method for preparing wear-resistant superhydrophilic underwater superoleophobic surface based on swelling method
  • A method for preparing wear-resistant superhydrophilic underwater superoleophobic surface based on swelling method

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specific Embodiment approach 1

[0033] Specific embodiment 1: The method for preparing a wear-resistant super-hydrophilic underwater super-oleophobic surface based on the swelling method in this embodiment is completed in the following steps:

[0034] 1. Preparation of inorganic particle coating:

[0035] Mix nylon, hydrophilic inorganic particles and 88% formic acid to obtain a coating containing inorganic particles;

[0036] The mass ratio of nylon to hydrophilic inorganic particles is 1: (0.5-20); the total mass percentage of nylon and hydrophilic inorganic particles in the inorganic particle-containing coating is 10% to 55%;

[0037] 2. Spray adhesive layer:

[0038] Spray the adhesive uniformly on the surface of the substrate to obtain a uniform adhesive layer, and then dry until the adhesive layer is completely cured to obtain a coated substrate;

[0039] The adhesive is an adhesive that can be swelled by formic acid or a polymer that can be swelled by formic acid;

[0040] 3. Dip coating of inorganic particles:

...

specific Embodiment approach 2

[0048] Specific embodiment two: this embodiment is different from specific embodiment one in that the hydrophilic inorganic particles described in step one are SiO 2 Particles, TiO 2 Particle or BaSO 4 particle. Others are the same as the first embodiment.

specific Embodiment approach 3

[0049] Specific embodiment three: This embodiment is different from one of specific embodiments one or two in that the nylon described in step one is nylon 6,6, nylon 6, or nylon 4,6. . Others are the same as the first or second embodiment.

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Abstract

The invention provides a method for preparing a wear-resistant superhydrophilic underwater super oleophobic surface on the basis of a swelling method, and relates to a preparation method of a wear-resistant superhydrophilic underwater super oleophobic coating. The method aims at solving the problems that the existing preparation process of the superhydrophilic underwater super oleophobic surface is complicated, and the wear-resistant performance is poor. The method comprises the following steps of 1, preparing inorganic particle paint; 2, spraying and coating a glue layer; 3, soaking and coating inorganic particle paint, and completing the method for preparing the wear-resistant superhydrophilic underwater super oleophobic surface on the basis of the swelling method. The method provided by the invention belongs to the method for preparing the wear-resistant superhydrophilic underwater super oleophobic surface on the basis of the swelling method.

Description

Technical field [0001] The invention relates to a preparation method of a wear-resistant super-hydrophilic underwater super-oleophobic coating. Background technique [0002] Super-hydrophilic surfaces have important applications in anti-fogging, self-cleaning, enhanced boiling heat transfer, and oil-water separation. In recent years, they have been widely synthesized and applied to different substrates. As far as most superhydrophilic surfaces are concerned, due to their strong affinity for water, they also show highly oleophobic or super oleophobic properties underwater. However, the traditional methods for preparing super-hydrophilic surfaces mostly use surface chemical modification or deposit hydrophilic materials with poor mechanical strength on the surface. For example, the article "A novel superhydrophilic and underwater superoleophobic hydrogel-coated mesh for oil / water separation" published on page 4270 of the 23rd issue of Advanced Materials in 2011 introduced a method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/38B05D5/08B05D1/18
CPCB05D1/18B05D5/08B05D2401/10B05D2505/00C03C17/38
Inventor 王成毓张文博
Owner NORTHEAST FORESTRY UNIVERSITY
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