Preparation method capable of having hydrophobic characteristic on complex liquid phase and eliminating static accumulation surface

A technology that eliminates static electricity and liquid phase. It is used in devices that coat liquid on surfaces, special surfaces, and pretreated surfaces to achieve the effect of promoting liquid repellency.

Inactive Publication Date: 2018-11-30
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned technical defects, the present invention provides a preparation method that has lyophobic properties for complex liquid phases and eliminates the accumulation of static electricity on the surface. Through the adjustment of the concentration of the spraying liquid and a simple spraying method, the solid surface quickly has lyophobic properties and has Eliminate static characteristics, and the preparation method steps of the present invention can obtain a surface with lyophobic properties to the complex liquid phase containing solid particles, the contact angle of the solid-liquid interface can be greater than 120°, and the rolling angle of the liquid phase on the solid surface can be less than 70°, at the same time, the static charge generated by the friction of the solid-liquid interface can be exported in time, and there will be no charge accumulation phenomenon

Method used

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  • Preparation method capable of having hydrophobic characteristic on complex liquid phase and eliminating static accumulation surface
  • Preparation method capable of having hydrophobic characteristic on complex liquid phase and eliminating static accumulation surface
  • Preparation method capable of having hydrophobic characteristic on complex liquid phase and eliminating static accumulation surface

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Using a stainless steel sheet as the substrate, use ethanol to ultrasonically clean the substrate for 1 hour to remove grease and other pollutants on the surface of the substrate; use 150nm copper particles as the conductive dispersed phase at a concentration of 20g / L, and heptadecafluorodecanetrimethoxysilane It is a solute with a solubility of 0.1mol / L, and toluene is used as a solvent to configure a spray solution; the configured spray solution is stirred in a mechanical stirring device at 30° for 24 hours; the prepared spray solution is placed in a spray gun, and the spray gun The caliber is adjusted to 50um, and the stainless steel sample is evenly sprayed, and the coating film thickness is controlled to 0.5mm; the sprayed sample is dried in an oven at 80°C for 24h. Glycerol is used as the liquid phase, and aluminum powder particles with a mass fraction of 20% are dispersed in it to form a complex liquid phase of aluminum powder / glycerin. The complex liquid phase is...

Embodiment 2

[0020] Using glass as the substrate, the substrate was ultrasonically cleaned with ethanol for 1 hour to remove grease and other pollutants on the surface of the substrate; 150nm copper particles were used as the conductive dispersed phase at a concentration of 20g / L, and heptadecafluorodecanetrichlorosilane was used as the Solute, the solubility is 0.5mol / L, using toluene as solvent, configure the spray solution; the configured spray solution is stirred in the mechanical stirring device at 30 ° for 48h; the prepared spray solution is placed in the spray gun, the spray gun caliber Adjust it to 20um, and spray evenly on the glass sample, and control the coating film thickness to 1mm; the sprayed sample is placed in an oven at 80°C for 72 hours. Hydroxyl-terminated polybutadiene (HTPB) is used as the liquid phase, and Fox-7 particles with a mass fraction of 30% are dispersed inside to form a Fox-7 / HTPB complex liquid phase, and the complex liquid phase is dropped on the prepared ...

Embodiment 3

[0022] Using silicon wafers as the substrate, the substrate was ultrasonically cleaned with ethanol for 1 hour to remove grease and other pollutants on the surface of the substrate; 50nm gold particles were used as the conductive dispersed phase at a concentration of 2g / L, and heptadecafluorodecanetrichlorosilane was used as the Solute, the solubility is 0.5mol / L, using toluene as solvent, configure the spray solution; the configured spray solution is stirred in the mechanical stirring device at 50 ° for 48h; the prepared spray solution is placed in the spray gun, the spray gun caliber Adjust it to 10um, and spray evenly on the glass sample, and control the coating film thickness to 0.2mm; the sprayed sample is dried in an oven at 80°C for 72h. Hydroxyl-terminated polybutadiene (HTPB) is used as the liquid phase, and Fox-7 particles with a mass fraction of 30% are dispersed inside to form a Fox-7 / HTPB complex liquid phase, and the complex liquid phase is dropped on the prepared...

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Abstract

The invention discloses a preparation method capable of having a hydrophobic characteristic on a complex liquid phase and eliminating the static accumulation surface. The preparation method comprisesthe following steps: (1) an organic material or an inorganic material is taken as a substrate, and the substrate is cleaned; (2) a spraying liquid containing a conductive dispersing phase is arranged,wherein the conductive dispersing phase is selected from gold, silver, copper and graphene, the solvent of the spraying liquid is selected from ethanol, normal hexane and methylbenzene, and the solute of the spraying liquid is siloxane or chlorosilane containing fluorine group; (3) the prepared spraying liquid is uniformly stirred; (4) the spraying liquid with the uniform stirring is placed in aspray gun, and the spraying liquid is aligned to the substrate for uniform injection; and (5) after spraying is completed, the substrate is dried so as to obtain a functional surface capable of havingthe lyophobic characteristic on the complex liquid phase and eliminating the static accumulation. Through adjustment of the concentration of the spraying liquid and a simple spraying mode, the surface of solid has the lyophobic characteristic quickly and has the characteristic of eliminating static electricity.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional surfaces and interfaces, and in particular relates to a preparation method for a surface with lyophobic properties for complex liquid phases and for eliminating static accumulation. Background technique [0002] The special hydrophobic surface properties of many animals and plants in nature have attracted widespread attention. Hydrophobic properties refer to the non-wetting properties of the material surface and the contact liquid. Inspired by the properties of the interface in nature, various types of hydrophobic or oleophobic materials have been developed. These functional materials all have extremely broad application prospects in national defense construction, industrial and agricultural production, and daily life. [0003] Most of the hydrophobic or oleophobic surfaces currently prepared are aimed at contacting liquids such as water or organic solvents in a single continuous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/08B05D3/10
CPCB05D3/10B05D5/083B05D2401/10B05D2601/20B05D2601/28
Inventor 祝青蒋全萍李尚斌郑保辉罗观
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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