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Coating prepared from particles with ultrahigh roughness

A roughness and particle technology, applied in the field of coating technology preparation, can solve the problems of short life, difficult preparation and low mechanical strength of the coating, and achieve the effect of long life, moderate cost and high strength

Active Publication Date: 2017-10-17
HONGDA TECH BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The first object of the present invention is to provide a method for preparing a super-repellent coating composed of ultra-high roughness particles, so as to solve the problem that the existing super-hydrophobic coating, super-hydrophilic, super-amphiphobic and other surfaces require an ultra-high roughness structure Problems of low mechanical strength, short service life and difficult preparation of coating

Method used

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  • Coating prepared from particles with ultrahigh roughness
  • Coating prepared from particles with ultrahigh roughness
  • Coating prepared from particles with ultrahigh roughness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0084] Example 2 Hydrophobic and oleophobic

[0085] refer to Figure 4 , the schematic diagram indicates that the coating is mainly composed of a protective layer primer 1 , a protective layer overcoat 2 , protective particles 5 , ultra-high roughness particles 6 , and an ultra-thin layer adhesive 7 .

[0086] refer to figure 1 , in step 101, the surface treatment of the base material can be carried out by conventional methods such as surface sandblasting, phosphating, attaching a primer, and scrubbing with a paint thinner.

[0087]In step 102, firstly, the polyurethane resin and its curing agent are respectively diluted to 1-50wt% by organic solvent. Secondly, after mixing the diluted epoxy resin and curing agent, it is evenly sprayed on the base material by a pneumatic spray gun, with a solid content thickness of 3-5 μm to form a protective layer of primer.

[0088] In step 103, 3000-mesh corundum particles (5 protective particles) are uniformly sprayed on the base mater...

Embodiment 3

[0096] Example 3 Hydrophobic and lipophilic

[0097] refer to Figure 5 , the schematic diagram indicates that the coating is mainly composed of protective particles 5 , ultra-high roughness particles 6 and mixed layer binder 8 .

[0098] refer to figure 2 , in step 201, the surface treatment of the base material can be carried out by conventional methods such as surface sandblasting, phosphating, attaching a primer, and scrubbing with a paint thinner.

[0099] In step 211, the airgel particles surface-modified by hexamethyldisilazane are first ground to D 90 Particles smaller than 5 μm. Then 0.1-15wt% of airgel particles, 0.01-60wt% of 2000 mesh corundum particles, 0.1-20wt% of hydroxyl-terminated silicone resin and 0.01-1wt% of KH550 are dispersed in the organic solvent to form a mixed solution.

[0100] In step 202, the mixed solution is uniformly sprayed on the base material through a pneumatic spray gun.

[0101] In step 203, the substrate that has been sprayed with...

Embodiment 4

[0103] Example 4 superhydrophilic, underwater superoleophobic

[0104] refer to Image 6 , the schematic diagram indicates that the coating is mainly composed of protective particles 5 , ultra-high roughness particles 6 and super-thin layer binder 7 .

[0105] refer to figure 2 , in step 201, the surface treatment of the base material can be carried out by conventional methods such as surface sandblasting, phosphating, attaching a primer, and scrubbing with a paint thinner.

[0106] In step 221, the unmodified airgel particles are first heated to above 350°C in air for 1 hour, and then ground to D 90 Particles smaller than 5 μm. Then 0.1-15wt% of airgel particles, 0.1-20wt% of hydroxyl-terminated silicone resin and 0.01-1wt% of KH550 are dispersed in the organic solvent to form a mixed solution.

[0107] In step 202, the mixed solution is uniformly sprayed on the base material through a pneumatic spray gun.

[0108] In step 203, the substrate that has been sprayed with t...

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Abstract

The invention provides a superhydrophobic coating prepared from particles with ultrahigh roughness. The superhydrophobic coating is prepared from the following components: particles with protrusions or holes and unsmooth structures, protective particles, a bonding agent and an assistant, wherein the volume ratio of the particles with the protrusions or the holes and the unsmooth structures to the protective particles to the bonding agent is (0.1-7):(1-7):(1-10). A lotus effect technical theory is applied to obtain a super-hydrophobic, underwater superhydrophobic oil or super-amphiphobic surface coating, further the performance of the coating is improved, and the defects of the conventional superhydrophobic coating that the structure is easy to damage, the service life is short and the like are overcome. The prepared coating has super hydrophobic properties (super-hydrophobic, underwater superhydrophobic oil or super-amphiphobic properties), self-cleanness and excellent wear resistance; substrate materials suitable for the coating are glass, plastic, rubber, textiles, paper, metal, cement, ceramic materials or the materials covering other coatings.

Description

technical field [0001] The invention belongs to the field of coating technology preparation in applied chemical engineering, and in particular relates to a coating composed of ultra-high roughness particles. Background technique [0002] Coating is a common process for surface treatment of materials, which can effectively protect materials from corrosion, thereby significantly improving the service life of materials. The hydrophobic coating can isolate the material itself from the external water, and plays an important role in the protection of buildings, industrial equipment, pipelines, precision machinery and other structures. And in recent years, with the continuous improvement of people's quality of life requirements and the continuous enhancement of environmental protection and energy conservation awareness, the superhydrophobic coating process has developed rapidly because of its strong self-cleaning function. [0003] The so-called super-hydrophobic coating refers to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D183/06C09D5/00C09D171/00C09D175/04B05D1/02B05D1/12B05D3/02B05D3/04
CPCB05D1/02B05D1/12B05D3/0254B05D3/0406C08K5/544C08K9/06C08K2003/2227C09D5/00C09D163/00C09D171/00C09D175/04C09D183/06
Inventor 卢序傅怡然李光武李福全郑振叶
Owner HONGDA TECH BEIJING CO LTD
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