Adhesive composite wear-resistant super-hydrophobic coating and preparation method thereof

A super-hydrophobic coating and adhesive technology, applied in the field of preparation of hydrophobic materials, can solve problems such as complex process, inability to realize large-scale preparation, high cost, etc.

Pending Publication Date: 2022-01-07
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The preparation of superhydrophobic surfaces with properties far superior to those of animals and plants in the existing technology has basically been realized. However, there is still a long distance to be crossed in order to truly realize the industrial production of super

Method used

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  • Adhesive composite wear-resistant super-hydrophobic coating and preparation method thereof
  • Adhesive composite wear-resistant super-hydrophobic coating and preparation method thereof
  • Adhesive composite wear-resistant super-hydrophobic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example

[0039] Add 40 ml of ethanol, 1 ml of deionized water and 5 ml of tetraethylorthosilicate to the beaker and keep stirring. After 30 min, add 1 ml of ammonia water (27%) and continue stirring for 30 min. Finally, add 3 ml of hexamethyldisilica Amine was continuously stirred for 4 hours, and aged for one week to obtain a stable silica sol. The whole process was carried out at room temperature; then, the silica sol was conventionally dried and ground to obtain nano-silica.

[0040] The following experimental samples are all based on soda-lime glass substrates. Before use, the glass was cut into 2.5cm×2.5cm in size, ultrasonically treated with acetone, ethanol and deionized water, and blown dry with nitrogen to clean them.

Embodiment

[0042] At room temperature, coat a layer of adhesive on the glass substrate, then apply nano silicon dioxide (5mL sol drying) on ​​the adhesive, then cover with a piece of glass, place a 1Kg weight, pressurize After curing, an adhesive composite wear-resistant superhydrophobic coating is obtained, with a contact angle of 161° and a rolling angle of figure 1 , The curing time is set according to the instructions of the adhesive.

[0043] The conditions that the present invention can effectively improve the wear resistance are: 1. The strong bonding effect of the adhesive on the material; 2. The adhesive material itself combined with nano-silica has higher wear resistance; 3. The adhesive It can be mixed with nanoparticles to act as a skeleton.

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PUM

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Abstract

The invention discloses an adhesive composite wear-resistant super-hydrophobic coating and a preparation method thereof. The adhesive composite wear-resistant super-hydrophobic coating is obtained by coating a rigid substrate with an adhesive and then pressing in nano silicon dioxide. The rigid substrate is glass. The adhesive is one or more of silicone rubber, water-based paint, water-based adhesive sticker, 502 glue and epoxy resin AB glue. The prior art generally has the problems of environmental pollution, complex process, high cost and the like, cannot realize large-scale preparation, and is mostly limited in an ideal research environment of a laboratory. According to the invention, HMDS is used as a modifier, super-hydrophobic SiO2 particles are prepared under a fluorine-free condition, an adhesive is introduced as an auxiliary coating, the composite super-hydrophobic coating with high mechanical strength is prepared, and the adhesive, a preparation process and a wear resistance enhancement mechanism are analyzed and researched.

Description

technical field [0001] The invention belongs to the preparation of hydrophobic materials, in particular to an adhesive composite wear-resistant super-hydrophobic coating and a preparation method thereof. Background technique [0002] Judging whether the wetting process can proceed spontaneously requires the surface free energy of the solid and the solid-liquid interface. The three wetting types can only occur spontaneously when the free energy of the system changes to a negative value. Among them, wetting is the easiest, followed by wetting , spreading is most difficult to occur. Observing the shape of the liquid on the solid surface can also evaluate the wettability of the solid. The liquid on the surface that is easy to wet can often spread completely, while the liquid on the surface that is difficult to wet only partially spreads into a hemispherical or even spherical shape. In order to accurately represent the wettability of solid surfaces, contact angle and rolling ang...

Claims

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Application Information

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IPC IPC(8): C03C17/00
CPCC03C17/007
Inventor 王艳艳徐志勇唐兴杰彭长四
Owner SUZHOU UNIV
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