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Super-hydrophobic surface formed on basis of dihydrazide derivative molecular gel

A super-hydrophobic, molecular gel technology, applied in the field of nano-micron surfaces, can solve the problems of inability to promote engineering material surfaces, harsh experimental conditions, practical application limitations, etc., and achieve the effects of low cost, simple chemical substances, and simple experimental conditions.

Active Publication Date: 2016-08-17
SUZHOU GENER NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current methods for preparing superhydrophobic surfaces involve complex chemical substances and crystal growth, the experimental conditions are relatively harsh, the experimental operation is complicated, the experimental cost is high, and the industrial production cannot be carried out, so its practical application is limited.
At the same time, these preparation methods have relatively high requirements on the substrate, and cannot be extended to the surface of engineering materials.

Method used

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  • Super-hydrophobic surface formed on basis of dihydrazide derivative molecular gel
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  • Super-hydrophobic surface formed on basis of dihydrazide derivative molecular gel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for constructing a superhydrophobic surface based on a diamide derivative molecular gel, comprising the following steps:

[0025] (1), 3,4-dioctyloxybenzoyl hydrazide and terephthaloyl chloride are dissolved in tetrahydrofuran solution respectively; Then the tetrahydrofuran solution of terephthaloyl chloride is added dropwise to 3, 4-dioctyloxybenzohydrazide solution in tetrahydrofuran; after the dropwise addition is completed, add a small amount of pyridine and react at room temperature for 8 hours to obtain the crude product of BPH-8, freeze and filter the crude product, and use tetrahydrofuran poly Second recrystallization to obtain high-purity BPH-8;

[0026] (2), add BPH-8 in a well-sealed flask, add a mixed solvent of ethanol and DMSO, control the volume ratio of ethanol and DMSO to 10:1, heat to completely dissolve the gel factor, and obtain 0.23 %The solution;

[0027] (3), apply the BPH-8 solution to the substrate while it is hot to form a thin film,...

Embodiment 2

[0031] A method for constructing a superhydrophobic surface based on a diamide derivative molecular gel, comprising the following steps:

[0032] (1), 3,4-dioctyloxybenzoyl hydrazide and terephthaloyl chloride are dissolved in tetrahydrofuran solution respectively; Then the tetrahydrofuran solution of terephthaloyl chloride is added dropwise to 3, 4-dioctyloxybenzohydrazide solution in tetrahydrofuran; after the dropwise addition is completed, add a small amount of pyridine and react at room temperature for 8 hours to obtain the crude product of BPH-8, freeze and filter the crude product, and use tetrahydrofuran poly Second recrystallization to obtain high-purity BPH-8;

[0033] (2) Add BPH-8 to a well-sealed flask, add a mixed solution of THF, DMSO and ethanol, control the volume ratio of THF, DMSO and ethanol to 10:1:2-10, and heat to completely dissolve the gel factor , to obtain a solution containing 0.43% of BPH-8;

[0034] (3), apply the BPH-8 solution to the substrate...

Embodiment 3

[0038] A method for constructing a superhydrophobic surface based on a diamide derivative molecular gel, comprising the following steps:

[0039] (1), 3,4-dioctyloxybenzoyl hydrazide and terephthaloyl chloride are dissolved in tetrahydrofuran solution respectively; Then the tetrahydrofuran solution of terephthaloyl chloride is added dropwise to 3, 4-dioctyloxybenzohydrazide solution in tetrahydrofuran; after the dropwise addition is completed, add a small amount of pyridine and react at room temperature for 8 hours to obtain the crude product of BPH-8, freeze and filter the crude product, and use tetrahydrofuran poly Second recrystallization to obtain high-purity BPH-8;

[0040] (2), add BPH-8 in a well-sealed flask, add a mixed solution of THF and ethanol, control the volume ratio of THF and ethanol to be 1:2, heat to completely dissolve the gel factor, and obtain BPH-8 containing 0.35% solution;

[0041] (3), apply the BPH-8 solution to the substrate while it is hot to for...

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Abstract

The invention discloses a super-hydrophobic surface formed on the basis of dihydrazide derivative molecular gel. A dihydrazide derivative BPH-8 with relatively high gelatinization performance is taken as a gelator, and the surface appearance of a material is controlled in a way of adjusting types and a proportion of solvents, so that the aim of regulating the hydrophobicity is fulfilled. The super-hydrophobic surface has the advantages of use of simple raw materials, simple experiment conditions, high yield and low cost. The prepared super-hydrophobic surface is uniform, dense and flat.

Description

technical field [0001] The invention relates to the technical field of nano-micro surfaces, in particular to a method for constructing superhydrophobic surfaces based on diamide derivative molecular gels. Background technique [0002] Surface wettability is a very important property of solid materials. It refers to the ability of liquid to spread on the surface of solid materials, which is determined by the chemical composition and microscopic morphology of the material surface. Usually, we use the contact angle of liquid on the material surface to characterize the wettability of the material surface. According to the different contact angles of water droplets on the surface of the material, the materials are divided into the following categories: when the surface contact angle is less than 90°, it is a hydrophilic material; when the surface contact angle is less than 5°, it is a superhydrophilic material; when the surface contact angle is greater than 90° It is a hydrophob...

Claims

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Application Information

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IPC IPC(8): B81C1/00B82Y30/00B82Y40/00C09K3/18
CPCB81C1/00023B82Y30/00B82Y40/00C09K3/18
Inventor 王海涛李敏张天任刘亚杰张鹏白炳莲
Owner SUZHOU GENER NANO TECH
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