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Coating solution, modified silicon dioxide film and preparation method thereof

A technology of silicon dioxide film and coating liquid, applied in coating, instrument, optics, etc., can solve the problems of not being generally available, expensive optical film, etc.

Inactive Publication Date: 2016-11-23
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to such problems, an optical film comprising a hard coat layer and a protective layer prepared by double-layer coating is extremely expensive and thus not commonly available

Method used

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  • Coating solution, modified silicon dioxide film and preparation method thereof
  • Coating solution, modified silicon dioxide film and preparation method thereof
  • Coating solution, modified silicon dioxide film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Next, an embodiment of the present invention will be described. In Example 1, a modified silica film was prepared by the following preparation method.

[0098] As an undiluted solution of polysilazane solution, NAX120-20 (AZ Electronic Materials Co., Ltd.) was prepared. Hereinafter, the undiluted solution is also referred to as "undiluted polysilazane solution". The undiluted polysilazane solution contained 20 wt% polysilazane. In addition, the solvent of the undiluted polysilazane solution was dibutyl ether (surface tension of 22.4) and contained an amine catalyst.

[0099] Next, a predetermined amount of dibutyl ether was added to 9.9 parts by weight of the undiluted polysilazane solution, followed by stirring slowly for 10 minutes, thereby preparing a polysilazane solution. Here, the amount of dibutyl ether added to the undiluted polysilazane solution was determined so that the content of the solid (polysilazane+reactive fluoropolymer) in the coating liquid was 2 ...

Embodiment 2 to 14 and comparative example 1 to 4

[0106] In Examples 2 to 14 and Comparative Examples 1 to 4, in addition to changing the weight ratio of polysilazane to reactive fluoropolymer, the type of reactive fluoropolymer, the type of fluorinated solvent, the The same process as in Example 1 was followed except for the presence and concentration of the reactive fluoropolymer solution. Table 1 shows the amount (parts by weight) of solid, the weight ratio of polysilazane to reactive fluoropolymer, the presence of fluorine-containing solvent and the reactive content according to Examples 1 to 14 and Comparative Examples 1 to 4, respectively. Concentration of Fluoropolymer Solution.

[0107] Table 1

[0108]

[0109] Among reactive fluoropolymers (fluoropolymers), ※1 indicates KY-108 (surface tension of 16.5, Shin-Etsu Chemical Co., Ltd.), and ※2 indicates OPTOOL DSX (surface tension of 15.9, Daikin Industries Co., Ltd. ). Unmarked cases indicate KY-164 (Shin-Etsu Chemical Co., Ltd.).

[0110] In the column of the c...

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Abstract

A method for preparing a modified silica film, a coating solution, and a modified silica film are disclosed. The method for preparing a modified silica membrane comprises preparing a polysilazane solution, preparing a reactive fluoropolymer solution, and forming a reactive fluoropolymer solution by mixing the polysilazane solution with the reactive fluoropolymer solution. preparing a coating liquid, forming a coating layer by coating the coating liquid on a substrate, removing the solvent for polysilazane and the fluorine-containing solvent from the coating layer, and Binding to the polysilazane simultaneously converts the polysilazane to silica.

Description

technical field [0001] The invention relates to a method for preparing a modified silicon dioxide film and a modified silicon dioxide film prepared by the method. Background technique [0002] Since a silica film prepared by silica conversion (ie, curing) of polysilazane exhibits a strength close to the strength of glass, a silica film is often used to improve the surface strength of various films. Recently, there has been an increasing demand for improving the surface strength of optical films using silicon dioxide films. Here, the optical film is, for example, an antireflection film bonded to the surface of the display. [0003] Although such optical films require good scratch resistance, antifouling properties, etc., silica films prepared by silica conversion of polysilazanes exhibit insufficient properties in terms of scratch resistance, antifouling properties, etc. . Therefore, modification of the silica film is required. In Patent Document 1 (JP2006-82341A), as a m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D183/16C09D7/00G02B1/10
CPCC09D183/16C08G77/62
Inventor 小堀重人
Owner CHEIL IND INC
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