Universal liquid perfusion lubricating coating and preparation method thereof

A liquid perfusion and lubricating coating technology, applied in the field of bionic material chemistry, can solve the problems of poor pressure stability, no liquid perfusion lubricating coating, easy adsorption of bacteria and proteins, etc., to achieve good universality and excellent anti-pollution characteristics , Excellent anti-bioadhesion properties

Inactive Publication Date: 2020-08-07
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this antifouling surface still has problems in practical applications: poor pressure stability, easy adsorption of bacteria and proteins, no resistance to physical loss, etc.
To date, there have been no published reports on the preparation of liquid-infused lubricating coatings utilizing the adhesive properties of polydopamine in combination with lubricating surfaces.

Method used

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  • Universal liquid perfusion lubricating coating and preparation method thereof
  • Universal liquid perfusion lubricating coating and preparation method thereof
  • Universal liquid perfusion lubricating coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A kind of universal liquid perfusion lubricating coating and its preparation method, the specific steps are:

[0025] (1) Cleaning the solid substrate: take the polyester non-woven fabric as the solid substrate, ultrasonically clean it with absolute ethanol for 30 minutes, and dry it for later use.

[0026] (2) Polydopamine activation layer: 0.4 g of polyethyleneimine and 0.4 g of dopamine were respectively dissolved in 200 mL of Tris buffer solution (pH=8.5), and mixed thoroughly to prepare a dopamine / polyethyleneimine deposition solution. Then, (1) immerse the cleaned polyester non-woven fabric in the deposition solution, and react with air for 4 hours. Finally, take out the sample and wash it with pure water to remove the residual deposition solution on the surface, and put it in a vacuum drying oven to dry at 60°. A polydopamine activation layer was obtained on the surface.

[0027] (3) Silica nanoparticle layer: Add 1.5mL tetramethyl silicate to 100m...

Embodiment 2

[0032] Embodiment 2: A kind of universal liquid perfusion lubricating coating and preparation method thereof, the specific steps are:

[0033] (1) Cleaning the solid substrate: take the plastic sheet of a disposable lunch box as the solid substrate, ultrasonically clean it with absolute ethanol for 30 minutes, and dry it for later use.

[0034] (2) Polydopamine activation layer: 0.2 g of polyethyleneimine and 0.2 g of dopamine were respectively dissolved in 100 mL of Tris buffer (pH=8.5), and mixed thoroughly to prepare a dopamine / polyethyleneimine deposition solution. Then, (1) immerse the cleaned plastic sheet in the deposition solution, and react with air for 5 hours, finally take out the sample and wash it with pure water to remove the residual deposition solution on the surface, put it into a vacuum drying oven for drying at 60°, and obtain a polymer on the surface of the substrate. Dopamine activation layer.

[0035] (3) Silica nanoparticle layer: Add 3 mL of tetramethy...

Embodiment 3

[0040] Embodiment 3: A kind of universal liquid perfusion lubricating coating and its preparation method, the specific steps are:

[0041] (1) Cleaning the solid substrate: take a glass slide as the solid substrate, ultrasonically clean it with absolute ethanol for 30 minutes, and dry it for later use.

[0042] (2) Polydopamine activation layer: 0.3 g polyethyleneimine and 0.3 g dopamine were respectively dissolved in 150 mL Tris buffer solution (pH=8.5), and mixed well to prepare a dopamine / polyethyleneimine deposition solution. Then, (1) immerse the cleaned glass sheet in the deposition solution, and react with air for 4 hours. Finally, take out the sample and wash it with pure water to remove the residual deposition solution on the surface, and put it into a vacuum drying oven for drying at 60° to obtain a polymer on the surface of the substrate. Dopamine activation layer.

[0043] (3) Silica nanoparticle layer: Add 1.5mL tetramethyl silicate to 100mL hydrochloric acid (1m...

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Abstract

The invention discloses a universal liquid perfusion lubricating coating and a preparation method thereof, and belongs to the field of biomimetic material chemistry. The coating is composed of a dopamine activated layer, a silicon dioxide nanoparticle layer, a fluorinated layer and a lubricating oil layer. The preparation method comprises the following steps: firstly, dopamine is oxidized and self-polymerized to form the polydopamine activated layer under the assistance of polyethyleneimine, then the silicon dioxide nanoparticle layer is formed through a polycondensation reaction of tetramethyl silicate, the fluorinated layer is obtained through further treatment of fluorine-containing silane, lubricating oil is poured to form the lubricating oil layer, and the liquid pouring lubricating coating with universality is obtained. A polluted liquid can slide off from the surface at a small inclination angle, the adhesion amount to proteins and bacterial pollutants is small, the anti-pollution characteristic and the anti-bioadhesion characteristic are excellent, and the coating is feasible for most solid substrates and has universality.

Description

technical field [0001] The invention belongs to the field of bionic material chemistry, and in particular relates to a universal liquid perfusion lubricating coating and a preparation method thereof. Background technique [0002] Surface contamination is a core issue of common concern in many fields. For example, in the fields of biomedicine and tissue engineering, surface contamination caused by the adsorption of proteins and cells on the surface of biomedical materials will reduce their efficacy and increase the risk of side effects such as thrombosis and rejection. Risks; in the field of marine and industrial facilities, the surface pollution of ships or warships causes increased resistance, increased consumption and accelerated corrosion damage; in the field of membrane separation, membrane fouling causes irreversible attenuation of membrane separation performance and permeate flux. The exquisite design of biological structures in nature has created a variety of low-poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/02C09D179/04C09D1/00C09D183/08B05D1/38B05D5/08B05D7/00C03C17/34C08J7/04D06M11/79D06M13/513D06M15/37D06M16/00D06M101/32
CPCB05D1/38B05D5/083B05D7/58B05D2425/04B05D2506/10B05D2518/00C03C17/3405C03C2218/111C08G77/24C08J2300/00C08J2479/02C08J2479/04C08L2205/02C09D1/00C09D4/00C09D179/02C09D179/04C09D183/08C08J7/0423D06M11/79D06M13/513D06M15/37D06M16/00D06M2101/32D06M2200/01D06M2200/12C08L79/02B05D2425/02
Inventor 赵莉芝张玉忠李日舜佀迪迪赵雅香
Owner TIANJIN POLYTECHNIC UNIV
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