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A biological antifouling coating with long-lasting superhydrophobic properties and preparation method thereof

A super-hydrophobic and high-performance technology, applied in coatings, antifouling/underwater coatings, polyether coatings, etc., can solve the problems of substrate material limitation, uncontrollable structure, equipment limitation, etc., achieving good stability and excellent stability , the effect of mild reaction conditions

Active Publication Date: 2021-12-14
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a biological anti-fouling coating with long-lasting super-hydrophobic properties and its Preparation

Method used

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  • A biological antifouling coating with long-lasting superhydrophobic properties and preparation method thereof
  • A biological antifouling coating with long-lasting superhydrophobic properties and preparation method thereof
  • A biological antifouling coating with long-lasting superhydrophobic properties and preparation method thereof

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Effect test

Embodiment 1

[0036] A preferred embodiment of the present invention provides a method for preparing a biological antifouling coating with long-lasting superhydrophobic properties, the specific steps are as follows:

[0037] (1) Pretreatment of polishing, cleaning and drying the base material stainless steel;

[0038](2) Put the stainless steel pretreated in step (1) into the disodium hydrogen phosphate-citric acid buffer solution with a pH of 3, and add proanthocyanidin A2, silver ions and ammonium persulfate oxidant, and make proanthocyanidin A2 The final concentrations of silver ions and ammonium persulfate oxidizing agent are 2mg / mL, 0.5mg / mL and 1mg / mL respectively, then react at 20°C for 2h, wash and set aside;

[0039] (3) Dilute perfluorododecanoic acid with a mixture of water and ethanol, wherein the volume ratio of water and ethanol is 1:2, and the final concentration of perfluorododecanoic acid dilution is 0.5mg / mL;

[0040] (4) The stainless steel that the surface that step (2)...

Embodiment 2

[0042] A preferred embodiment of the present invention provides a method for preparing a biological antifouling coating with long-lasting superhydrophobic properties, the specific steps are as follows:

[0043] (1) Carry out the pretreatment of polishing, cleaning and drying to the base material polylactic acid;

[0044] (2) putting the polylactic acid pretreated in step (1) into pH 5 in acetic acid-sodium acetate buffer, and adding epigallocatechin gallate, copper ion and hydrogen peroxide (30%) oxidant, And make the final concentrations of epigallocatechin gallate, copper ion and hydrogen peroxide (30%) respectively 4mg / mL, 2mg / mL and 2mg / mL, then react at 15°C for 5h, wash and set aside;

[0045] (3) Dilute perfluorododecanoic acid with a mixture of water and methanol, wherein the volume ratio of water and methanol is 1:4, and the final concentration of perfluorododecanoic acid dilution is 1 mg / mL;

[0046] (4) the polylactic acid that the surface that step (2) makes conta...

Embodiment 3

[0048] A preferred embodiment of the present invention provides a method for preparing a biological antifouling coating with long-lasting superhydrophobic properties, the specific steps are as follows:

[0049] (1) Pretreatment of polishing, cleaning and drying the base material diamond-like carbon;

[0050] (2) putting the diamond-like carbon pretreated in step (1) into pH 4 in the citric acid-sodium hydroxide-hydrochloric acid buffer solution, and adding gallic acid, copper ion and sodium periodate oxidant, and making gallic acid, The final concentrations of copper ions and sodium periodate are 1mg / mL, 0.5mg / mL and 0.5mg / mL respectively, then react at 20°C for 1h, wash and set aside;

[0051] (3) Dilute perfluorobutyl ethylene with a mixture of water and dimethyl sulfoxide, wherein the volume ratio of water and dimethyl sulfoxide is 1:5, and the final concentration of perfluorobutyl ethylene dilution is 0.5mg / mL;

[0052] (4) The diamond-like carbon that the surface that ...

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Abstract

The invention discloses a biological antifouling coating with long-lasting superhydrophobic properties and a preparation method thereof. The preparation method comprises the following steps: S1. polishing, cleaning, and drying the base material, and then placing it in an acid buffer solution, and then Adding polyphenolic compounds, metal ions and oxidizing agents, reacting in an environment of 10-40°C for 1-10h, and washing to obtain a base material with composite nanoparticles on the surface; S2. Soak the base material with composite nanoparticles on the surface obtained in S1 in fluorine Compound diluent, 0.1-5h of ultraviolet radiation, cleaning, nitrogen drying, that is. The preparation method of the present invention has mild reaction conditions, good repeatability, economy, and is convenient for popularization and use. The prepared superhydrophobic fluoride composite coating has excellent long-term superhydrophobicity, and can be used for implantable devices, medical diagnostic devices, medical sensors, etc. Material preparation.

Description

technical field [0001] The invention belongs to the technical field of biomedical functional materials, and in particular relates to a biological antifouling coating with long-lasting superhydrophobic performance and a preparation method thereof. Background technique [0002] In general, once the surface of biological materials comes into contact with blood or body fluids, a large number of proteins or cells will adhere to the surface of the material in a short period of time, which will seriously affect the performance of the material, such as causing Acute thrombosis, acute inflammation, bacterial infection, weakened or lost functions of bioactive molecules on the surface of materials, decreased sensitivity of diagnostic devices and sensors, etc. Therefore, it is very important for the surface of biomaterials to have excellent antifouling properties, while the traditional antifouling surfaces that have been widely studied mainly include polyethylene glycol (PEG) molecular ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D171/10C09D5/16
CPCC09D5/1681C09D5/1662C09D171/00
Inventor 李林华王云兵付平
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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