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Hydrophobic composite polymer film in micron and nanometer structure and its prepn

A hydrophobic polymer and composite film technology, which is applied in the field of hydrophobic polymer composite film and its preparation, can solve problems such as complex methods, and achieve the effects of simple preparation methods, avoiding damage, and broadening the application range and service life

Inactive Publication Date: 2005-12-14
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The second object of the present invention is to overcome the defect that the method is complicated when preparing a micron-scale and nano-scale solid rough surface, and provide a simple method for preparing a solid surface with a micron-scale and nano-structure

Method used

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  • Hydrophobic composite polymer film in micron and nanometer structure and its prepn
  • Hydrophobic composite polymer film in micron and nanometer structure and its prepn
  • Hydrophobic composite polymer film in micron and nanometer structure and its prepn

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Prepare potassium hydroxide solution with a concentration of 3mol / L.

[0027] (2) An anodic porous aluminum oxide film with a pore diameter of 200 nm (produced by Whatman Company, UK, trade name Anapore) was used as a material, and chemically etched with an alkaline solution for 5 minutes at a temperature of 23°C.

[0028] (3) Drying: Dry under an infrared lamp for 3 hours at a temperature of 40°C.

[0029] (4) Utilize the solution coating method of dripping, the saturated NMP (N-methylpyrrolidone) of one deck intrinsic state polyaniline is coated on the anodic porous aluminum oxide film substrate with micron and nanostructure of step (3) gained The solution was then dried in an oven at 60 °C for 3 h.

[0030] The wall thickness of the micron-scale pores in the sample is determined by SEM to be 1.5-2.5 μm, and the pore diameter of the micron-scale pores is 0.5-1.0 μm. The average static contact angle of the composite film to water is 144.1°. SEM photos of the sol...

Embodiment 2

[0032] (1) Prepare potassium hydroxide solution with a concentration of 3mol / L.

[0033] (2) An anodic porous aluminum oxide film with a pore diameter of 200 nm (produced by Whatman Company, UK, trade name Anapore) was used as a material, and chemically etched with an alkaline solution for 6 minutes at a temperature of 23°C.

[0034] (3) Drying: Dry in an oven for 3 hours at a temperature of 60°C.

[0035] (4) Utilize the solution coating method of dropping, on the anodic porous aluminum oxide film substrate with micron and nanostructure of step (3) gained, coat the saturated NMP solution of one deck intrinsic state polyaniline, dry in oven then 3 hours at a temperature of 60°C.

[0036] The wall thickness of the micron-scale pores of the sample is determined by SEM to be 0.5-1.0 μm, and the pore diameter of the micron-scale pores is 2.0-3.0 μm. The average static contact angle of the composite film to water is 148.4°. SEM photos of the solid surface are attached figure 2 ....

Embodiment 3

[0038] (1) Prepare potassium hydroxide solution with a concentration of 3mol / L.

[0039] (2) An anodic porous aluminum oxide film with a pore diameter of 200 nm (produced by Whatman Company of the United Kingdom, trade name Anapore) was used as a material, and chemically etched with an alkaline solution for 3 minutes at a temperature of 24°C.

[0040] (3) Drying: Dry under an infrared lamp for 3 hours at a temperature of 40°C.

[0041] (4) Utilize the solution coating method of dropping, on the anodic porous aluminum oxide film substrate with micron and nanostructure of step (3) gained, coat the saturated NMP solution of one deck intrinsic state polyaniline, dry in oven then 3 hours at a temperature of 60°C.

[0042] The wall thickness of the micron-scale pores in the sample is determined by SEM to be about 1.0 μm, and the pore diameter of the micron-scale pores is 5-10 μm. The average static contact angle to water is 147.18°. Scanning electron microscope photographs of sol...

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Abstract

The present invention belongs to the field of preparing micron and nanometer structure on the surface of solid, and is especially hydrophobic composite polymer film in micron and nanometer structure and its preparation process. The composite film is prepared on anode porous alumina film as substrate and through chemical etching to constitute special rough structure on the surface of the anode porous alumina film and modifying polymer material on the surface of the structure. Test shows that the hydrophobic composite polymer film has static contact angle to water greater than 140 deg and hydrophobic performance obviously higher than that of corresponding smooth film. The polymer film may be formed with different common polymer material and thus has wide application foreground.

Description

technical field [0001] The invention belongs to the field of preparing micron and nanometer structures on solid surfaces, in particular to a hydrophobic polymer composite film with micron and nanometer structures and a preparation method thereof. Background technique [0002] Wettability is an important characteristic of solid surfaces, and hydrophobicity, as one of its manifestations, has very important potential application value, which has attracted extensive attention of researchers and achieved great results. [0003] Generally, there are two main methods to improve the hydrophobicity of solid surfaces: one is to modify the solid surface with substances with low surface energy such as fluorine-containing compounds; the other is to increase the roughness of the solid surface. At present, such literature reports have the article "superhydrophobic surface produced by irregular fragment structure" (S.Shibuich, T.Onda, N.Satoh, K. .Tsujii.Super water...

Claims

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Application Information

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IPC IPC(8): C08J5/18
Inventor 马永梅陈新华江雷王佛松
Owner INST OF CHEM CHINESE ACAD OF SCI
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