Superhydrophobic surface material and special nano-particles thereof with core-shell structures

A super-hydrophobic surface and nanoparticle technology, applied in other chemical processes, microcapsule preparations, microsphere preparation, etc., can solve the problems of material constraints, inability to carry out large-scale production and application, and lack of universality

Inactive Publication Date: 2010-06-23
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods do not have good universality, have high restrictions on materials, and cannot be mass-produced and applied

Method used

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  • Superhydrophobic surface material and special nano-particles thereof with core-shell structures
  • Superhydrophobic surface material and special nano-particles thereof with core-shell structures
  • Superhydrophobic surface material and special nano-particles thereof with core-shell structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1. Dissolve 0.5g of polymethyl methacrylate in 20ml of dichloromethane, add 1.5g of calcium hydroxide, mix well and add 80ml of petroleum ether dropwise. Suction filter the obtained product, and repeatedly wash with petroleum ether for 3 to 4 times to obtain inorganic microcapsules.

[0048] 2. Coating α-ethyl cyanoacrylate on the glass sheet with the method of spin coating (2000 rpm, 20 seconds), after drying at room temperature for 30 minutes, the bionic micro-nano hierarchical structure obtained in step 1 The ethanol dispersion of the composite microspheres was spray-coated on the above-mentioned glass sheet, and continued to solidify at room temperature for 2 hours.

[0049] 3. Soak the coating prepared in step 2 in a solution of 1% potassium stearate by mass, react for 8 hours, and dry to obtain a surface material with superhydrophobic properties.

[0050] The scanning electron microscope photograph of this inorganic matter microcapsule is as attached figure 1 sh...

Embodiment 2

[0052] 1. Disperse 100 mg of polystyrene hollow microsphere aqueous solution (solid content is 27.5%) with a diameter of 1 micron in 30 ml of 2mol / L hydrochloric acid solution, add 3.6 ml of aniline monomer, mix well, and stir at room temperature for 24 hour, the homogeneous mixture obtained was centrifuged at a speed of 12000 rpm for 5 minutes, and the centrifuged isolate was dispersed in 0.2mol / L FeCl 3 aqueous solution, stirred at room temperature for 24 hours. Centrifuge at a speed of 8000 rpm and wash with water to obtain polyaniline-polystyrene composite microspheres with a diameter of 1 micron and a bionic micro-nano hierarchical structure.

[0053] 2. be the acetone solution of the F46 type novolac epoxy resin of 20% by weight percent concentration, select N for use, N-dimethylbenzylamine is as curing agent, and its weight is 10% of described epoxy resin weight, mixes, Coating film on the plexiglass plate with the method of spin coating (2000 rpm, 20 seconds), after d...

Embodiment 3

[0058] 1. Disperse 20 mg of polystyrene hollow microspheres with a diameter of 1 micron in water, centrifuge the emulsion at a speed of 12,000 rpm for 5 minutes after 24 hours, wash the isolate obtained by centrifugation twice with ethanol, and disperse in ethanol , add 0.2ml of mixed solution of n-butyl titanate and ethanol (the volume ratio of the two is 1:1) per hour, add 15 times in total, centrifuge the obtained mixed solution, wash it repeatedly with ethanol, and then wash it with polystyrene Washing with toluene solution for 2 to 3 times can obtain titanium dioxide hollow microspheres with columnar structure on the surface.

[0059] 2. be the acetone solution of the bisphenol A type epoxy resin (E51 type) of 20% by weight percent concentration, with the triethylenetetramine of epoxy resin weight 5% as curing agent, mix well, with the method of spin coating (2000 revs / min, 20 seconds) film coating on the plastic sheet, after drying at 60 ℃ for 10 minutes, the ethanol dis...

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Abstract

The invention discloses a superhydrophobic surface material and special nano-particles thereof with core-shell structures. The superhydrophobic material with surface having superhydrophobic performance is prepared by enabling the nano-particles with core-shell structures to form an interface in a certain strength with a substrate under the action of an adhesive, and then, hydrophobically treating the interface. The surface of the superhydrophobic material presents the superhydrophobic property and has a contact angle larger than 150 degrees and a rolling angle smaller than 5 degrees so that water drops on the surface can rapidly roll off. The superhydrophobic surface material provided by the invention has favorable purposes in the field of preparing an antifogging material, a waterproof material, a self-cleaning material, a lubricating drag-reducing material, and the like. The method for preparing the superhydrophobic material has the advantages of simple process and cheap raw materials, thereby being suitable for mass production.

Description

technical field [0001] The invention relates to the field of hydrophobic surfaces, in particular to superhydrophobic surface materials and nanoparticles with a core-shell structure. Background technique [0002] The hydrophobic surface refers to the material surface with a contact angle of water droplets greater than 90 degrees; the superhydrophobic surface refers to the material surface with a contact angle of water droplets greater than 150 degrees and a rolling angle of less than 5 degrees. The key to constructing a superhydrophobic surface is to construct a certain roughness and carry out surface chemical modification. In 2002, Jiang Lei, a researcher at the Institute of Chemistry, Chinese Academy of Sciences, proposed that the fundamental reason for the superhydrophobicity of the lotus leaf surface is that there are nanostructures on the papillae of the microstructure on the surface of the lotus leaf (Feng L, Li S H, Li Y S, Li H J, Zhang L J , Zhai J, Song Y L, Liu B ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02C09K3/18
Inventor 王倩杨振忠
Owner INST OF CHEM CHINESE ACAD OF SCI
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