A superhydrophilic/underwater superoleophobic co-deposition coating and preparation method thereof

An underwater superoleophobic and co-deposition technology, applied in antifouling/underwater coatings, water/sewage treatment, adsorbed water/sewage treatment, etc. The effect of mechanical stability

Active Publication Date: 2021-03-16
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the preparation methods currently used have the disadvantages of complex process and high cost, which limits the practical application of superhydrophilic / underwater superoleophobic coatings.
[0005] Chinese invention patents with publication numbers CN105536296A and CN104888498A disclose oil-water separation nets with superhydrophobic / super-oleophilic properties. Although this net has good oil-water separation efficiency, the lipophilic materials tend to be polluted or clogged due to the adsorption of oil , resulting in reduced separation efficiency and reproducible separation performance
The Chinese invention patent with the publication number CN103893999A discloses an oil-water separation membrane with superhydrophilic and underwater superoleophobic properties. Although the oil-water separation effect is achieved, there is a disadvantage of complicated preparation process

Method used

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  • A superhydrophilic/underwater superoleophobic co-deposition coating and preparation method thereof
  • A superhydrophilic/underwater superoleophobic co-deposition coating and preparation method thereof
  • A superhydrophilic/underwater superoleophobic co-deposition coating and preparation method thereof

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preparation example Construction

[0040] The present invention has a preparation method of superpocade coating, including the following steps, including the following steps.

[0041] Step 1, the cleaning of the substrate surface,

[0042] Take a 20 × 20mm 2 The base sheet is soaked for 8 to 24 h with anhydrous acetone, and then the ultrasonic ethanol, anhydrous acetone and distilled water are performed, respectively, and finally dry;

[0043] The substrate can be a polymer sheet, a glass sheet, a metal sheet, a screen, a silicon wafer and a fiber cloth;

[0044] Step 2, refer to the existing method, formulate Tris buffer solution or PBS buffer solution,

[0045]The formulation of the TRIS buffer solution is specifically: Tris hydroxymethylmethhane (i.e., Tris), adding distilled water to be dissolved to completely, using acid substances to adjust the pH to 7 to 10, i.e., Tris buffer solution, Tris buffer solution The concentration of 10 to 100 mmol / L; acid substances are one or more of inorganic acid and organic ...

Embodiment 1

[0056] The present invention has a method of preparing a coating coating of super hydrate / underwater superovight, and specifically includes the following steps.

[0057] Step 1, the cleaning of the PE sheet surface,

[0058] Take a 20 × 20mm 2 The PE tablets were soaked for 12h with anhydrous acetone, and anhydrous ethanol, anhydrous acetone and distilled water were used for 10 min, and naturally dried;

[0059] Step 2, the formulation of the Tris buffer solution,

[0060] 0.97 g of trihydroxymethylmethhane (TRI) was accurately weighed, and the mixture was stirred with distilled water to completely, and the pH = 8 of hydrochloric acid was used, and the solution concentration was 80 mmol / L.

[0061] Step 3, the preparation of the amphoteric ion monomer 1-carboxy-N, N-dimethyl-N-methacrylamide propyl salt (CBMAA-1),

[0062] 2.5 g of N- (3-dimethylamine) methacrylamide (DMAPMA) was sufficiently dissolved with 2 mL of distilled water, and condensate was installed in 100 mL of fou...

Embodiment 2

[0073] The present invention has a method of preparing a coating coating of super hydrate / underwater superovight, and specifically includes the following steps.

[0074] Step 1, the surface of the glass sheet is cleaned,

[0075] Take a 20 × 20mm 2 The glass sheet is soaked for 18 h with anhydrous acetone, and anhydrous ethanol, anhydrous acetone and distilled water are used in sequentially, and naturally dry;

[0076] Step 2, the formulation of the Tris buffer solution,

[0077]0.48 g of trimethylmethylmethhane (TRI) was accurately weighed, and the mixture was stirred with distilled water to completely, and the solution was adjusted to be adjusted to pH = 8.5, and the solution concentration was 40 mmol / L;

[0078] Step 3, the preparation of dimethylbarboxylatyl methacrylate (CBMA) of gender ion monomeric methacrylate,

[0079] 3.5 g of dimethyl methacrylate (DMAEMA) was sufficiently dissolved with 5 ml of distilled water, and the condensed tube and thermometer were filled wit...

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Abstract

The invention discloses a super-hydrophilic / underwater super-oleophobic co-deposition coating and a preparation method thereof. The method includes 1) adjusting the pH of a sodium chloroacetate solution to 7-8, and reacting the solution and a monomer at 40-80 DEG C for 3-10 h to obtain a mixture system A; 2) precipitating a product in the mixture system A and drying the product to obtain a zwitterionic monomer; 3) adding the zwitterionic monomer and dopamine into a Tris buffer solution having a pH value of 7-10 or a PBS buffer solution having a pH value of 7-10, and dissolving the added materials to obtain a mixture system B; 4) immersing a substrate into the mixture system B, and allowing co-deposition of polymerized dopamine and the polymerized monomer onto the substrate to form a composite A, taking the composite A out, and drying the composite A. Polydopamine microspheres with hydrophilic zwitterionic polymer are obtained on the surfaces of the co-deposition coating through a polymerization co-deposition technique and have a good super-hydrophilic / underwater super-oleophobic characteristic.

Description

Technical field [0001] The present invention relates to the field of antifouling techniques, in particular a superpowered / underwater superovight coating coating and a preparation method thereof. Background technique [0002] In recent years, mussel bionic chemistry has been widely concerned as a new surface modification technology, and many of the top disciplines such as chemical, biological, energy and environment, and gradually become a new favorite in the field of surface modification. Mussels, oysters and other marine milders can be firmly adhered to hard stone walls, the bottom of the ship, and even the surface of the breeding box, and can withstand the impact of the waves to a certain extent. The study found that mussels have so strong in underwater that it can secrete mucus proteins, mussels have high strength, high toughness and high water repellency and special adhesion properties. [0003] In 2007, Messermith et al. Found that dicamine can be oxidized from polymerizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022C02F1/28C02F1/40C09D4/06C09D5/16
CPCB01D17/02C02F1/285C02F1/40C09D4/06C09D5/1662
Inventor 郝红李琳杨萌晨张静静李星玥赵夏段延萍
Owner NORTHWEST UNIV
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