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Polysilazane-based hydrophilic coating, preparation method therefor and application of polysilazane-based hydrophilic coating

A hydrophilic coating and polysilazane technology, applied in the field of materials, can solve problems such as water resistance

Active Publication Date: 2020-01-24
北京和尔泰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, before preparing the cross-linked layer, the substrate needs to be placed in H 2 o 2 and H 2 SO 4 Activated in solution and therefore unsuitable for metal and polymer substrates
[0004] Moreover, the general hydrophilic coating is an organic coating, which is not water-resistant

Method used

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  • Polysilazane-based hydrophilic coating, preparation method therefor and application of polysilazane-based hydrophilic coating
  • Polysilazane-based hydrophilic coating, preparation method therefor and application of polysilazane-based hydrophilic coating
  • Polysilazane-based hydrophilic coating, preparation method therefor and application of polysilazane-based hydrophilic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Example 1 Preparation of solution composition for SiON transition layer

[0077] The solution composition for SiON transition layer is prepared by using PHPS, and its specific mass percentage composition is:

[0078] PHPS 20%

[0079] Piperidine 0.05%

[0080] Dibutyl ether 79.95%.

Embodiment 2

[0081] Example 2 Preparation of SiON transition layer

[0082] The solution composition in Example 1 was used for spin coating on glass, the spin coating rate was 2000 r / min, and the spin coating time was 60 s; after the solvent evaporates, it is cured by heating and cured at 100° C. for 2 hours. The obtained SiON transition layer has a thickness of 350 nm, and the coating adhesion measured by the cross-hatch method is level 1. Using X-ray photoelectron spectroscopy XPS to analyze the surface elements of the silicon oxide coating, the O / Si ratio is 0.93.

Embodiment 3

[0083] Example 3 Preparation of SiON transition layer

[0084] The solution composition in Example 1 was used for spin coating on glass, the spin coating rate was 2000 r / min, and the spin coating time was 60 s; after the solvent evaporates, it is cured at room temperature for 4 hours. The obtained SiON transition layer has a thickness of 353 nm, and the coating adhesion measured by the cross-hatch method is level 1. Using X-ray photoelectron spectroscopy XPS to analyze the surface elements of the silicon oxide coating, the O / Si ratio is 0.82.

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Abstract

The invention belongs to the technical field of materials and particularly relates to a polysilazane-based hydrophilic coating, a preparation method therefor and an application of the polysilazane-based hydrophilic coating. The hydrophilic coating disclosed by the invention is obtained through carrying out hydrophilization treatment on a Si-N and / or Si-H-containing organic-inorganic hybridized transition layer or a SiON transition layer prepared on the basis of polysilazane. The hydrophilic coating is flexible in coating mode, is not restricted byshapes and sizes of substrates and is easy in large-area preparation. Secondly, the substrates are not required to be subjected to activating treatment prior to preparation of the coating, so that the process is simple, and the operation is convenient. Furthermore, the hydrophilic coating is transparent and dense, is high in hardness and has relatively good adhesive power on various substrates, the hardness reaches up to 9H, and the transparency is 90% or more. In addition, a water contact angle of the coating disclosed by the invention can reach 6.5 degrees to the minimum. The preparation method disclosed by the invention can be rapidly carried out at normal temperatures or relatively low heating temperatures. The prepared hydrophilic coating has properties of inorganic coatings, thereby having an excellent water-resistant characteristic. The hydrophilic coating disclosed by the invention can be applied to multiple fields of anti-fouling, anti-fogging and the like.

Description

Technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a hydrophilic coating based on polysilazane and a preparation method and application thereof. Background technique [0002] The hydrophilic surface has good wettability. The water droplets can spread on the surface into a uniform water film to wash away the dust on the surface. It is widely used in anti-fog, anti-fouling and other fields. The construction of hydrophilic surface starts with UV-induced TiO 2 Super hydrophilic coating, the water contact angle is close to 0°. However, the coating prepared by this method only exhibits hydrophilicity under the irradiation of ultraviolet light, and is not suitable for indoor use. In order to solve this problem, some researchers have proposed to modify the surface of the light-induced super-hydrophilic coating, and the super-hydrophilic coating is prepared by the idea of ​​providing hydrophilicity by its highly rough micro-nano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/16C09D7/61C03C17/22C03C17/23
CPCC03C17/22C03C17/23C03C2218/116C09D183/16C09D7/61
Inventor 张宗波王丹徐彩虹邹铭黄文文周晓龙郭香
Owner 北京和尔泰新材料科技有限公司