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A high-strength, wear-resistant superhydrophobic composite material and its preparation method

A composite material and super-hydrophobic technology, which is applied in the field of super-hydrophobic composite materials, can solve the problems of super-hydrophobic materials losing their use value and improving the wear resistance of super-hydrophobic properties. The effect of compressive strength

Active Publication Date: 2021-04-16
WENZHOU INST OF BIOMATERIALS & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if the binder has good cohesive strength, once the coating surface loses its hydrophobicity, the superhydrophobic material will lose its use value
Therefore, the use of these methods does not substantially improve the wear resistance of superhydrophobic properties.

Method used

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  • A high-strength, wear-resistant superhydrophobic composite material and its preparation method
  • A high-strength, wear-resistant superhydrophobic composite material and its preparation method
  • A high-strength, wear-resistant superhydrophobic composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Mix 3.0 mL of ethyl orthosilicate, 3.5 mL of hexamethyldisilazane, and 30 mL of ethanol, stir at room temperature for 40 min, then add 5 mL of deionized water, and continue stirring for 3 h to obtain a hydrophobic silica sol;

[0052] (2) Take by weighing 0.70g of bisphenol A epoxy resin, 0.30g of curing agent, 12g of silica sol, join in the beaker, heat until epoxy resin and curing agent all dissolve, obtain uniform epoxy resin mixture;

[0053] (3) Cut the ultrasonically cleaned and dried latex sponge into a size of 10mm*10mm*5mm, add it to the epoxy resin mixture, and react at 35°C and 300rpm stirring speed for 24h;

[0054] (4) Take out the reacted sponge, put it in an oven at 60°C, move the sponge in a random direction every 1 hour, and dry it for 6 hours to obtain a block-shaped wear-resistant superhydrophobic material with high hardness;

[0055] After the above drying, a block material with high hardness can be obtained, with a contact angle of 158.8° and a ...

Embodiment 2

[0057] (1) Mix 2.5 mL of ethyl orthosilicate, 5.0 mL of hexamethyldisilazane, and 30 mL of ethanol, stir at room temperature for 40 min, then add 5 mL of deionized water, and continue stirring for 3 h to obtain a hydrophobic silica sol;

[0058] (2) Take by weighing 0.85g of bisphenol F epoxy resin, 0.35g of curing agent, 16g of silica sol, join in the beaker, heat until epoxy resin and curing agent all dissolve, obtain uniform epoxy resin mixture;

[0059] (3) Cut the ultrasonically cleaned and dried polyurethane sponge into a size of 10mm*10mm*5mm, add it to the epoxy resin mixture, and react at 35°C and 300rpm stirring speed for 24h;

[0060] (4) Place the reacted polyurethane on a glass sheet, put it in an oven at 60°C, and let it dry for 6 hours. After curing, a wear-resistant superhydrophobic block material firmly bonded to the substrate is obtained.

[0061] After the above drying, a high-hardness wear-resistant bulk material firmly bonded to the substrate can be obtain...

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Abstract

The invention discloses a high-strength, wear-resistant super-hydrophobic composite material. Epoxy resin, curing agent, and hydrophobic silica sol are prepared into a reaction solution, and a hole skeleton material is added to the reaction solution. The epoxy microstructure formed in the system The gel adheres and grows on the skeleton, and finally solidifies into epoxy microspheres. After drying, a superhydrophobic wear-resistant material is obtained. The superhydrophobic material prepared by the invention has the advantages of high hardness, high mechanical strength, wear resistance and high temperature resistance. The bottom of the material can be firmly combined with the substrate, and the surface layer and the middle layer of the material have the same super-hydrophobic properties, and the super-hydrophobic properties will not be lost under wear and tear conditions; the microsphere particles are firmly adhered to the skeleton, which effectively solves the problem of ordinary super-hydrophobic materials. The micro-nano rough structure on the surface is unstable, fragile, and has poor mechanical properties.

Description

technical field [0001] The invention relates to the field of superhydrophobic composite materials, and more specifically relates to the preparation of a superhydrophobic block wear-resistant material. Background technique [0002] Inspired by the lotus leaf effect, people have prepared a variety of superhydrophobic surfaces, which have good application value in various fields such as self-cleaning, oil-water separation, anti-corrosion, antibacterial, drug sustained release, etc. The preparation of superhydrophobic surfaces involves the construction of micro-nano rough structures and the modification of low surface energy substances. However, under external pressure, mechanical friction and other conditions, the micro-nano rough structure is damaged due to stress concentration, thus losing the superhydrophobic performance, which greatly limits the practical application process of superhydrophobic materials. [0003] At present, a variety of solutions have been proposed to so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/42C08L21/02C08L75/04
CPCC08J9/0061C08J9/0066C08J9/42C08J2321/02C08J2375/04C08J2463/00C08K3/36
Inventor 全云云魏坤李花琼黄祖胜
Owner WENZHOU INST OF BIOMATERIALS & ENG
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