Underwater super-oleophobic material and preparation method thereof

An underwater super-oleophobic and super-hydrophilic technology, which is applied in general water supply saving, coating, etc., can solve the problems of inability to guarantee the transparency of materials, achieve excellent underwater super-oleophobicity, improve utilization rate, and easily obtain raw materials Effect

Active Publication Date: 2020-04-21
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of these methods focus on the improvement of its mechan

Method used

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  • Underwater super-oleophobic material and preparation method thereof
  • Underwater super-oleophobic material and preparation method thereof
  • Underwater super-oleophobic material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] (1) Dip the glass sheet (5×5cm) with deionized water 2 , d=1mm) ultrasonically cleaned for 30 minutes, dried in an oven at 40°C for 1 hour, and treated with a plasma cleaner in high power mode for 8 minutes;

[0051](2) Pre-prepared 1.0wt% chitosan is spin-coated on the above-mentioned glass sheet, and the rotating speed of the spin-coating is 5000rpm and kept for 1min, and put into an oven at 40° C. for 2 hours to dry after spin-coating;

[0052] (3) Prepare 25mM CaCl with deionized water 2 Aqueous solution 100mL, after stirring and dissolving at room temperature for 30min, then add 0.06g of polyacrylic acid (PAA), continue stirring and dissolving for 30min, then slowly add 25mM NaCO 3 100mL aqueous solution, continue stirring and mixing for 30min, adjust the pH of the mixed solution to 10.0 with 1.0mol / L sodium hydroxide aqueous solution, and obtain a polymer-coated ACC solution;

[0053] (4) Soak the above-mentioned modified glass piece in 25mL of ACC solution, and...

Embodiment 2

[0058] (1) Dip the glass sheet (5×5cm) with deionized water 2 , d=1mm) ultrasonically cleaned for 30 minutes, dried in an oven at 60°C for 1 hour, and treated with a plasma cleaner in high power mode for 8 minutes;

[0059] (2) Soak the above-mentioned glass sheet in a pre-prepared 5.0wt% polyacetimide solution (100mL), remove it after soaking for 30min, and put it into an oven at 60°C for 2 hours to dry;

[0060] (3) Prepare 20mM CaCl with deionized water 2 Aqueous solution 100ml, stir and dissolve at room temperature for 20min, then add 0.08g of polyaspartic acid (PASP), continue to stir and dissolve for 20min, then slowly add 20mM NaCO 3 100mL aqueous solution, continue to stir and mix for 20min, adjust the pH of the mixed solution to 11.0 with 1.0mol / L sodium hydroxide aqueous solution, and obtain a polymer-coated ACC solution;

[0061] (4) Soak the above-mentioned modified glass piece in 30mL ACC solution, and put it in a water bath at 25°C for 6 hours for mineralizatio...

Embodiment 3

[0063] (1) Polyethylene terephthalate sheet (PET) (5×5cm 2 , d=5mm) ultrasonically cleaned for 30 minutes, dried in an oven at 60°C for 1 hour, and treated with a plasma cleaner in high power mode for 12 minutes;

[0064] (2) Spray-coat pre-prepared 6.0wt% polylysine evenly on the above-mentioned PET sheet, the temperature of the sprayed base is controlled at 60°C, and the sprayed PET is put into an oven at 60°C for 2 hours for further drying;

[0065] (3) Prepare 28mM CaCl with deionized water 2 Aqueous solution 100mL, after stirring and dissolving at room temperature for 30min, then add 0.06g of polyacrylic acid (PAA), continue stirring and dissolving for 30min, then slowly add 28mM NaCO 3 100mL aqueous solution, continue to stir and mix for 30min, adjust the pH of the mixed solution to 13.0 with 1.0mol / L sodium hydroxide aqueous solution, and obtain a polymer-coated ACC solution;

[0066] (4) Soak the above-mentioned modified glass piece in 50mL ACC solution, and put it i...

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Abstract

The invention discloses an underwater super-oleophobic material and a preparation method thereof. The underwater super-oleophobic material has high transparency and mechanical stability. The preparation method is based on a nacreous layer biomimetic mineralization strategy, and acidic macromolecules are used for regulating mineralization of amorphous calcium carbonate (ACC) on the surface of an organic membrane in order to prepare an organic/inorganic composite nacreous layer biomimetic mineralized film. Compared with traditional underwater super-oleophobic materials such as a hydrogel base, the underwater super-oleophobic material prepared through biomimetic mineralization not only has high transparency, but also has good mechanical stability and excellent underwater super-oleophobicity and ultralow oil adhesion. The mineralized film can be expanded to a series of transparent support materials, and has wide application prospects in many fields, such as diving goggles, underwater optical equipment and underwater vehicles.

Description

technical field [0001] The invention relates to the technical fields of chemical engineering and functional materials; more specifically, it relates to an underwater super-oleophobic material and a preparation method thereof. Background technique [0002] Underwater superoleophobic materials have broad application prospects in many fields such as the treatment of frequent oil spills. In order to realize the underwater superoleophobic properties of materials, it is usually necessary to introduce layered micro / nanostructures and high surface energy materials, so that water molecules can be adsorbed on the surface to form a water layer. However, these hierarchical micro / nanostructures may lead to material opacity due to extensive light scattering effects, which hinders their application in underwater optical devices and devices. Among them, hydrogels usually have high transparency and are often used as underwater superoleophobic materials, but due to their poor mechanical stre...

Claims

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Application Information

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IPC IPC(8): C03C17/42C08J7/04C08L25/06C08L67/02C08L69/00C08L23/12C08L33/12
CPCC03C17/42C08J2325/06C08J2367/02C08J2369/00C08J2323/12C08J2333/12C08J2305/08C03C2217/78C03C2218/111Y02A20/204
Inventor 孟靖昕陈伟王树涛王佰亮
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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