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Multifunctional natural super-hydrophobic material and application thereof

A super-hydrophobic and multi-functional technology, applied in wax coatings, anti-corrosion coatings, coatings, etc., can solve the problems that fluorocarbons cannot be applied, are not flat, etc., and achieve the effect of resisting adhesion and reducing water waste

Inactive Publication Date: 2021-01-26
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the hydrophobic substances used on superhydrophobic surfaces are mainly fluorocarbons. The toxicity of fluorocarbons prevents them from being used in food, medicine and other fields in production and life.
In addition, superhydrophobic materials are often built on planar materials, and most of the materials in life are not planar, such as tubes, hollow structures, etc., so building superhydrophobic surfaces on special-shaped materials is also a big challenge at present.

Method used

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  • Multifunctional natural super-hydrophobic material and application thereof
  • Multifunctional natural super-hydrophobic material and application thereof
  • Multifunctional natural super-hydrophobic material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1. At room temperature, add 140mg of L-cysteine ​​into 10mL of 4-hydroxyethylpiperazineethanesulfonic acid buffer solution with a pH of 7.4 and adjust the pH to 10 with 5mol / L aqueous sodium hydroxide solution. Add 10 mL of lysozyme to 4-hydroxyethylpiperazineethanesulfonic acid buffer solution with a pH of 7.4, and then mix the two solutions evenly to obtain a mixed solution; drop the mixed solution on a silicon chip and incubate at room temperature for 2 hours , forming a phase transition product of lysozyme on the silicon wafer surface (see figure 1 ).

[0063] 2. On the lysozyme phase transition product of step 1, spin-coat the normal hexane solution of 6mg / mL palm wax, after the normal hexane is completely volatilized, obtain the lysozyme phase transition product of modified palm wax (see figure 2 and image 3 ), the natural superhydrophobic coating.

Embodiment 2

[0065] 1. At room temperature, add 280mg of L-cysteine ​​into 10mL of 4-hydroxyethylpiperazineethanesulfonic acid buffer solution with a pH of 7.4 and adjust the pH to 10 with 5mol / L aqueous sodium hydroxide solution. Lysozyme was added to 10 mL of 4-hydroxyethylpiperazineethanesulfonic acid buffer solution with a pH of 7.4, and then the two solutions were mixed uniformly to obtain a mixed solution; the mixed solution was added dropwise to the polyethylene terephthalate , incubated at room temperature for 2 hr, the lysozyme phase transition product was formed on the polyethylene terephthalate surface.

[0066] 2. Spin-coat 15 mg / mL palm wax n-hexane solution on the lysozyme phase transition product in step 1. After the n-hexane is completely volatilized, the lysozyme phase transition product modified palm wax is obtained, that is, the natural superhydrophobic coating.

[0067] Figure 4 It means that the superhydrophobic coating is placed between 240-grit sandpaper and a 200g...

Embodiment 3

[0069] 1. At room temperature, add 500mg of L-cysteine ​​to 10mL of 4-hydroxyethylpiperazineethanesulfonic acid buffer solution with a pH of 7.4 and adjust the pH to 9 with 5mol / L aqueous sodium hydroxide solution. Lysozyme was added to 10 mL of 4-hydroxyethylpiperazineethanesulfonic acid buffer solution with a pH of 7.4, and then the two solutions were mixed evenly to obtain a mixed solution; the mixed solution was added dropwise on a quartz plate, and incubated at room temperature for 2 hours, The lysozyme phase transition product was formed on the surface of the quartz plate.

[0070] 2. Spin-coat 3 mg / mL candelilla wax n-hexane solution on the lysozyme phase transition product in step 1. After the n-hexane is completely volatilized, the lysozyme phase transition product of modified beeswax is obtained, that is, the natural superhydrophobic coating.

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Abstract

The invention discloses a multifunctional natural super-hydrophobic material and application thereof. The material is a super-hydrophobic coating formed by modifying a safe and nontoxic hydrophobic substance on a phase transformation coating obtained by reducing protein with a reducing agent. The preparation method of the super-hydrophobic coating is simple, and the material can be adhered to thesurface of any base material and has good mechanical stability and hydrophobic stability. The super-hydrophobic coating can be used for modifying a cellulose membrane to obtain a recyclable super-hydrophobic packaging material with anti-mold performance, so that the adhesion of liquid food is resisted; medical materials (blood transfusion tubes, blood transfusion bags and the like) are modified, and the super-hydrophobic medical material capable of resisting biological fluid adhesion is obtained; ceramic surfaces of toilets, urinals and the like are subjected to super-hydrophobic modificationto resist adhesion of urine; super-hydrophobic modification is performed on living goods (clothes and aprons); and the material is used as a waterproof coating for large-area application scenarios (walls, ships, concrete reservoirs, wooden floors, interiors of refrigerators, interiors of range hoods, air conditioner water storage boxes and internal pipelines).

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic materials, and in particular relates to a multifunctional superhydrophobic coating material formed by modifying a safe and non-toxic hydrophobic substance on a phase change coating, and the application of the superhydrophobic coating material. Background technique [0002] There are many super-hydrophobic surfaces in nature, such as lotus leaves and duck feathers. Inspired by nature, super-hydrophobic surfaces are widely used in production and life, such as self-cleaning, anti-fouling, anti-icing, oil-water separation, etc. In particular, some viscous liquid foods (such as yogurt and honey) are easy to adhere to surfaces such as packaging and clothes, causing serious food waste, and serious waste of water resources during the cleaning process; in the medical field, blood is easily Adhering to medical equipment such as gloves, blood transfusion bags, blood transfusion vessels, etc., causin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00C09D189/00C09D191/06C09D5/00C09D5/08
CPCB05D5/00C09D189/00C09D191/06C09D5/00C09D5/08
Inventor 杨鹏李菊玲任浩
Owner SHAANXI NORMAL UNIV
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