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A kind of inorganic superhydrophobic coating and its application

A super-hydrophobic coating and inorganic technology, applied in anti-fouling/underwater coatings, coatings, layered products, etc., can solve the problems of limited use and high cost, and achieve widened application range, excellent stability, and coatings. Efficient preparation method

Active Publication Date: 2016-11-16
天津超疏水纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide low-cost raw material preparation technology and super-hydrophobic coatings with a wide range of applications in view of the shortcomings of the current technology, such as high cost and limited use.

Method used

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  • A kind of inorganic superhydrophobic coating and its application
  • A kind of inorganic superhydrophobic coating and its application
  • A kind of inorganic superhydrophobic coating and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Preparation of superhydrophobic coatings

[0040] The silica sol was injected into the reactor equipped with 80nm polystyrene (PS) nanospheres prepared according to method three under negative pressure conditions, and the template was immersed for 2 hours, then the reactor was sealed and placed in a constant temperature box, and reacted at 60 ° C for 12 hours. 570°C temperature program removes the template to obtain a solid block micro-nano composite polyhedron, and the obtained block micro-nano composite polyhedron is fully ground to powder, and the particle size distribution range of the powder is 100nm-5000nm (Nano particle size and potential analyzer of British Malvern company Nano-ZS90 test, the following steps and implementation cases are the same); take 0.1g of micro-nano composite polyhedron powder into the reactor, then add 10.0mL (7.88g) of dispersion acetone, and add 20.6μL (0.30 g) Perfluorooctyltrimethoxysilane, the modification reaction was carried out...

Embodiment 2

[0049] (1) Preparation of superhydrophobic coatings

[0050] The silica sol was injected into the reactor equipped with 200nm polystyrene (PS) nanospheres prepared by method three under negative pressure conditions, and the template was immersed for 2 hours, then the reactor was sealed and placed in a constant temperature box, and reacted at 60°C for 12 hours. 570 ° C temperature program removed the template to obtain a solid block micro-nano composite polyhedron, the resulting block micro-nano composite polyhedron is fully ground to powder, take 0.1g of the micro-nano composite polyhedron powder into the reactor, and then add 10.0mL (7.88g ) dispersion liquid acetone, when the temperature of the system reaches 25°C, add 36.9 μL (0.57 g) of perfluorodecyltrimethoxysilane, and carry out the modification reaction for 12 hours. After the reaction, the mass fraction of the micro-nano composite polyhedron is controlled to be 2.7% by volatilization. That is, the superhydrophobic coa...

Embodiment 3

[0056] (1) Preparation of superhydrophobic coatings

[0057] The silica sol was injected into the reactor equipped with 300nm polyacrylamide (PAM) nanospheres prepared by method 1 under negative pressure conditions, and the template was immersed for 2 hours, then the reactor was sealed and placed in an incubator, and reacted at 60°C for 12 hours. Soak in water to remove the template to obtain a solid block micro-nano composite polyhedron, fully grind the obtained block micro-nano composite polyhedron to powder, take 0.1g of the micro-nano composite polyhedron powder into the reactor, and then add 10.0mL (7.88g) to disperse Liquid acetone, when the temperature of the system reaches 25°C, add 19.1 μL (0.22 g) trifluoropropane trimethoxysilane, carry out the modification reaction for 12 hours, and control the mass fraction of the micro-nano composite polyhedron to 5.0% by volatilization after the reaction is completed, which is prepared Superhydrophobic coatings;

[0058] The pr...

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Abstract

The invention relates to inorganic substance super-hydrophobic paint and application thereof. The paint is prepared in the following method: silica sol is injected into a reactor with a nano microsphere template under a negative pressure condition, the template is immersed in the silica sol for 2h, then the reactor is sealed and stored in a thermostat, the silica sol and the template react at the temperature of 60 DEG C for 12h, the template is removed by virtue of heating or water immersion, a solid blocked micro-nano composite polygon is obtained, and after the blocked micro-nano composite polygon is dried, the blocked micro-nano composite polygon is ground into powder; the powder is poured into another reactor, dispersion liquid acetone is mixed with the powder, a low-surface-energy silane coupling agent is used for modifying the powder at a temperature of 25 to 50 DEG C, the powder reacts for 10h to 15h, the micro-nano composite polygon powder accounts for 0.5 to 20 percent of the mass of the paint, and the super-hydrophobic paint is prepared. The inorganic substance super-hydrophobic paint can be smeared on the surfaces of various conventional materials, the preparation method of the paint is simple, and the obtained super-hydrophobic surface is excellent in stability.

Description

technical field [0001] The invention relates to the technical field of hydrophobic coating materials, in particular to the preparation and application of a superhydrophobic coating. Background technique [0002] Superhydrophobic performance means that the surface of the object has a water contact angle greater than 150°. The self-cleaning performance of lotus leaves without getting dirty from mud, the self-cleaning performance of moth wing surfaces, the legs of water striders walking freely on the water surface without sinking, the surface of fish bodies keeping themselves clean in oil-polluted water, etc. The phenomenon of superhydrophobicity has attracted great attention of many scholars. Barthlott et al confirmed [W.Barthlott, et al.Planta,1997,202:1.] that the superhydrophobicity of natural surfaces is a synergistic effect of their dual-scale structure (micro-nano structure) and the low surface free energy of related materials combined result. The "self-cleaning" abil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/16C08J7/06C08J7/04D06M11/79C03C17/42C04B41/50B32B33/00
Inventor 张旭杨碧微王小梅刘盘阁
Owner 天津超疏水纳米科技有限公司
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