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Article with organic/inorganic composite film and process for producing the same

An inorganic composite film and manufacturing method technology, applied in the direction of layered products, etc., can solve the problem of difficult formation of mechanical strength silica film, etc., and achieve the effect of superior mechanical strength and superior wear resistance

Active Publication Date: 2007-03-28
NIPPON SHEET GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the organic-inorganic composite membrane is heat-treated at such a high temperature, the organic matter in the membrane will decompose
The constraint that heat treatment must be performed within the range of not decomposing organic matter limits the improvement of the mechanical strength of the film to be formed even in liquid-phase film-forming methods other than the sol-gel method
Therefore, in the case of containing organic matter, it is considered difficult to form a silica-based film with excellent mechanical strength.
[0013] In addition, conventionally, the formation of a thicker silica-based film with excellent mechanical strength is considered to be more difficult when organic matter is contained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1

[0077] In Example A1, a polyether phosphate ester-based surfactant was added to the coating solution (forming solution). Polyether phosphate ester surfactant is also a source of phosphorus supply.

[0078] In 23.7 g of ethanol (manufactured by Katayama Chemical), 45.14 g of tetraethoxysilane (manufactured by Shin-Etsu Chemical), 27.16 g of pure water, concentrated hydrochloric acid (35% by mass, manufactured by Kanto Chemical Co., Ltd.) 0.1 g, polyether phosphate-based surfactant 3.9 g of an agent (manufactured by Nippon Ludrich: Solspice 41000) was stirred to obtain a formed solution.

[0079] The content of silicon alkoxide (tetraethoxysilane) in the solution (in terms of silicon dioxide), proton concentration, water content, organic polymer (hydrophilic organic polymer) content, etc., are shown in Table 1. . In addition, the water content (0.35 mass %) contained in ethanol was added to the water content and calculated. Proton concentration, calculated as the protons cont...

Embodiment A2

[0085] In Example A2, ethyl silicate was used together with tetraethoxysilane as a silica raw material.

[0086] To 30.02 g of ethanol (manufactured by Katayama Chemical), 22.57 g of tetraethoxysilane (manufactured by Shin-Etsu Chemical), 16.25 g of ethyl silicate 40 (manufactured by Colcott), 27.16 g of concentrated hydrochloric acid (35% by mass) of pure water were added. , manufactured by Kanto Chemical) 0.1 g of a polyether phosphate-based surfactant (manufactured by Japan Ludrich: Solus Pas 41000) 3.9 g was stirred to obtain a formed solution. The proton concentration and the like in this solution are shown in Table 1.

[0087] The "ethyl silicate 40" used here is represented by the following formula (1), and is a colorless and transparent liquid containing 40% by weight of a silica component (SiO2). In addition, in addition to chain-structure condensates, branched or cyclic-structure condensates are also included. Polymers of silicon alkoxide represented by "Ethyl sili...

Embodiment A3

[0093] In Example A3, polyethylene glycol was used instead of the polyether phosphate ester surfactant, and phosphoric acid was added as a raw material of phosphorus.

[0094] In 23.69 g of ethanol (manufactured by Katayama Chemical), 45.14 g of tetraethoxysilane (manufactured by Shin-Etsu Chemical), 27.16 g of pure water, 0.1 g of concentrated hydrochloric acid (35% by mass, manufactured by Kanto Chemical), phosphoric acid (85% by mass, Kanto Chemical Co., Ltd.) 0.11 g of polyethylene glycol 4000 (Kanto Chemical Co., Ltd.) 3.81 g was stirred to obtain a forming solution. The proton concentration and the like in this solution are shown in Table 1.

[0095] In addition, "polyethylene glycol 4000" used here is polyethylene glycol whose weight average molecular weight is 4000.

[0096] Next, the forming solution was applied by a flow coating method on a cleaned soda lime silicate glass substrate (100×100 mm) at room temperature at a humidity of 30%. In this state, after drying ...

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Abstract

An article with organic / inorganic composite coating formed, wherein the organic / inorganic composite coating is composed mainly of silica and will not be detached from the base material after Taber's abrasion resistance test prescribed in Japanese Industrial Standards (JIS) R 3212. This composite coating can be formed by a sol gel process from a coating liquid containing a hydrophilic organic polymer. In this liquid, for example, the amount of silicon alkoxide in terms of SiO2 concentration exceeds 3 mass%. When a phosphorus supply source is contained, the mass molarity of proton is in the range of 0.0001 to 0.2 mol / kg, and the molar amount of water is at least 4 times the total molar amount of silicon atoms contained in the silicon alkoxide. According to this sol gel process, there can be obtained a coating excelling in mechanical strength without the need to heat the base material to temperature higher than 400 DEG C and even when the coating thickness is as large as over 250 nm.

Description

technical field [0001] The present invention relates to an article on which an organic-inorganic composite film is formed and a method for producing the same, and more particularly to an article and a method for manufacturing the article on which a film formed by a sol-gel method and containing organic matter is excellent in mechanical strength. Background technique [0002] The glass material is generally rigid and can also be used in the form of a film covering the substrate. However, in order to obtain a glassy film, high-temperature treatment is required in the melting method, so materials constituting the substrate and the film are limited. [0003] The sol-gel method uses a solution of an organic or inorganic compound of a metal as a starting material, and through the hydrolysis reaction and polycondensation reaction of the compound in the solution, the solution is used as a sol in which particles of metal oxides or hydroxides are dissolved. A method in which solidifi...

Claims

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Application Information

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IPC IPC(8): B32B9/00
Inventor 井口一行佐佐木辉幸神谷和孝
Owner NIPPON SHEET GLASS CO LTD
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