Self-repairing transparent super-hydrophobic polyamide-imide composite film and preparation method thereof

A water polyamide-imide and polyamide-imide technology is applied in the field of self-healing transparent super-hydrophobic polyamide-imide composite film and its preparation, which can solve the problem of weak adhesion between coating and substrate and loss of super-hydrophobicity. performance, easy to be impacted or worn, etc., to achieve good self-healing function, low cost, and improved wear resistance

Active Publication Date: 2021-11-19
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the adhesion of the coating to the substrate is not strong, or the rough structure of the surface is too weak, it is easy to be impacted or abraded, and the superhydrophobic property will be lost

Method used

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  • Self-repairing transparent super-hydrophobic polyamide-imide composite film and preparation method thereof
  • Self-repairing transparent super-hydrophobic polyamide-imide composite film and preparation method thereof
  • Self-repairing transparent super-hydrophobic polyamide-imide composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Modification of silica

[0036] Add 2g of silicon dioxide and 100mL of deionized water into the flask, then add 1g of non-ionic fluorosurfactant Capstone FS-3100, stir vigorously at room temperature for 0.8 hours, and then vibrate ultrasonically for 0.2 hours. The suspension was then treated with a cell disruptor for 0.6 hours. Finally, 2 mL of the silica modifier perfluorodecyltrimethoxysilane was slowly added dropwise into the emulsion, and the stirring was continued for 15 hours at a speed of 2000 rpm.

[0037] (2) Preparation of self-healing transparent superhydrophobic polyamide-imide composite film

[0038] The polyamide-imide that step (1) is selected adopts N-methylpyrrolidone to be mixed with concentration and be 20gmL -1 The solution is coated on the glass substrate and dried at 80°C for 6 hours to obtain a polyamideimide wet film with a thickness of 30 μm. Then, the modified silica emulsion is 30 cm away from the base layer and sprayed at a pressure of ...

Embodiment 2

[0040] The difference between this embodiment and embodiment 1 is that the solvent in step (1) is ethanol, and other treatment means are consistent with embodiment 1.

Embodiment 3

[0042] The difference between this example and Example 1 is that the silica modifier in step (1) is nonafluorohexyltriethoxysilane, and other treatment methods are consistent with Example 1.

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Abstract

The invention belongs to the technical field of high polymer material modification, and particularly discloses a self-repairing transparent super-hydrophobic polyamide-imide composite film and a preparation method thereof. The preparation method comprises the following steps: dissolving PAI resin in a high-boiling-point solvent, coating on a glass substrate, drying, spraying modified silicon dioxide (SiO2) on the surface of a PAI wet film, and drying, thereby obtaining the self-repairing transparent super-hydrophobic PAI film. The composite film provided by the invention has the characteristics of good flexibility, optical permeability, hot water impact resistance, self-repairing and the like, and can be used in the fields of optical devices, solar cell panels, automobile windshields and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, and in particular relates to a self-repairing transparent superhydrophobic polyamide-imide composite film and a preparation method thereof. Background technique [0002] Superhydrophobic surfaces can be constructed by two methods: one is to make the surface have a lower surface energy, and the other is to make the surface have a certain roughness. It can be seen that optical transparency and roughness are two competing relationships, therefore, the transparency of the superhydrophobic films reported so far is poor. In addition, the superhydrophobic coating should also have good adhesion and robustness. If the adhesion of the coating to the substrate is not strong, or the rough structure of the surface is too fragile, it will be easily impacted or abraded, and the superhydrophobic properties will be lost. Therefore, the development of transparent superhydrophobic coatings w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/043C08J7/046C08J7/06C08L79/08C08K9/06C08K3/36
CPCC08J7/043C08J7/046C08J7/06C08J2379/08C08K9/06C08K3/36
Inventor 王艳宾侯姝晗王标兵
Owner CHANGZHOU UNIV
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