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A fluorine-containing nanopolymer modified nickel-titanium alloy material with superhydrophobic and oleophobic properties and its preparation method

A nano-polymer, nickel-titanium alloy technology, applied in the field of super-amphiphobic materials and medical devices, to prevent restenosis, inhibit vascular intimal hyperplasia, and achieve excellent super-hydrophobic effects

Active Publication Date: 2021-03-16
SHANGHAI FIRST PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there is currently no composite coating nickel-titanium alloy material with good superhydrophobic and oleophobic properties, super lubricating, effectively reducing intima hyperplasia, and good antibacterial effect.

Method used

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  • A fluorine-containing nanopolymer modified nickel-titanium alloy material with superhydrophobic and oleophobic properties and its preparation method
  • A fluorine-containing nanopolymer modified nickel-titanium alloy material with superhydrophobic and oleophobic properties and its preparation method
  • A fluorine-containing nanopolymer modified nickel-titanium alloy material with superhydrophobic and oleophobic properties and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 The preparation of the fluorine-containing nanopolymer modified nickel-titanium alloy material with superhydrophobic and oleophobic properties of the present invention (1)

[0033] 1 Experimental materials

[0034] 1.1 Medical nickel-titanium memory alloy plate

[0035] The medical nickel-titanium memory alloy plate was purchased from Shenzhen Xinghequan New Material Co., Ltd., the nickel content was 55.8wt%, and the size was 5mm*5mm*10mm.

[0036] 1.2 Reagents

[0037] Acetone, absolute ethanol, hydrobromic acid, hydrochloric acid, and acetic acid were purchased from Shanghai Merck Reagent Company;

[0038] PFDAE (1H, 1H, 2H, 2H-perfluorodecyl acrylate) is a product of Tokyo Chemical Industry Co., Ltd.;

[0039] Perfluorohexylethyltriethoxysilane and perfluorooctylethyltrimethoxysilane were purchased from Shanghai Shiyang Chemical Co., Ltd.;

[0040] 3-trimeric epoxyhexafluoropropane amidopropyl betaine and 3-trimeric epoxyhexafluoropropane amidopropyl (2...

Embodiment 2

[0051] Example 2 Preparation of the fluorine-containing nanopolymer modified nickel-titanium alloy material with superhydrophobic and oleophobic properties of the present invention (2)

[0052] 1 Experimental materials

[0053] With embodiment 1.

[0054] 2 Experimental methods

[0055] 2.1 Pretreatment of nickel-titanium alloy plate

[0056] The nickel-titanium alloy plate was soaked in acetone to degrease, and after taking it out, it was ultrasonically cleaned with absolute ethanol, and then deionized water was used for ultrasonic cleaning, and the cleaned nickel-titanium alloy plate was dried with high-pressure nitrogen. Put it into a clean and sealed container containing 0.3M HBr hydrobromic acid, 1.8M hydrochloric acid, and 2.5M acetic acid, put it in a dark place for 3 hours, take it out and put it into a container containing 1M HBr 2 SO 3 Place the solution in a clean and sealed container for 10 minutes, take it out, clean it ultrasonically with deionized water, and...

Embodiment 3

[0059] Example 3 The preparation of the fluorine-containing nanopolymer modified nickel-titanium alloy material with superhydrophobic and oleophobic properties of the present invention (3)

[0060] 1 Experimental materials

[0061] With embodiment 1.

[0062] 2 Experimental methods

[0063] 2.1 Pretreatment of nickel-titanium alloy plate

[0064] The nickel-titanium alloy plate was soaked in acetone to degrease, and after taking it out, it was ultrasonically cleaned with absolute ethanol, and then deionized water was used for ultrasonic cleaning, and the cleaned nickel-titanium alloy plate was dried with high-pressure nitrogen. Put it into a clean and sealed container containing 0.2M HBr hydrobromic acid, 2.2M hydrochloric acid, and 2.5M acetic acid, put it in a dark place for 3.5 hours, take it out and put it into a container containing 0.5M HBr 2 SO 3 Place the solution in a clean and sealed container for 30 minutes, take it out, clean it ultrasonically with deionized wa...

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Abstract

The invention relates to a fluorine-contained nanometer polymer modified nickel titanium alloy material with super-hydrophobic and oleophobic performances and a preparation method thereof. Mixed acidsolution and H2SO3 solution are used for twice etching in succession on the surface of a nickel titanium alloy material; and then, PFDAE, perfluorohexyl ethyl triethoxy silane, 3-triethylene oxide hexafluoropropanamide propylbetaine and ethanol solution of SiO2 nanoparticles are sprayed to obtain a surface-modified nickel titanium alloy material. Contact angle test results show that the surface ofthe modified nickel titanium alloy material is excellent in super-hydrophobic and oleophobic performances; and adhesion experiment results show that smooth muscle cells on the surface of the modifiednickel titanium alloy material are weak in adhering capacity and weaker in bacterial colonization capacity. The composite coating nickel titanium alloy material achieves unique advantages on the aspect of preparation of implantable medical devices, and can effectively inhibit the endangium hyperplasia to prevent the vascular restenosis and to inhibit the bacterial colonization and growth.

Description

technical field [0001] The invention relates to the field of superamphiphobic materials and medical devices, in particular to a fluorine-containing nanopolymer modified nickel-titanium alloy material with superhydrophobic and oleophobic properties and a preparation method thereof. Background technique [0002] Nickel-titanium alloy is widely used in the field of medical devices based on its unique superelasticity and shape memory effect. Nickel-titanium alloy vascular stents are widely used clinically, but they will not be absorbed by the body after being implanted in blood vessels and cannot be degraded. Stenosis, chronic inflammation, late and very late thrombosis and other problems. It is very important to improve the surface properties of Nitinol alloys and avoid the above complications. [0003] Surfaces with both water and oil contact angles greater than 150° are called superhydrophobic / oleophobic surfaces. Superhydrophobic / oleophobic is a special phenomenon on soli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/10C23C26/00
CPCC23C26/00C23G1/106
Inventor 张伟星王瑞兰宛新建杨莹黎金臻
Owner SHANGHAI FIRST PEOPLES HOSPITAL
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