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Preparation method of composite metal organic framework material colloidal solution and application thereof in optical coatings

A metal-organic framework, colloidal solution technology, used in coatings, optics, optical components, etc., can solve problems such as application limitations, low refractive index parameters, etc., to achieve good wear resistance and weather resistance, and improve the effect of transmittance

Inactive Publication Date: 2011-05-18
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, due to its low refractive index parameter, it can be mixed with silica sol to obtain a compound for anti-reflection coating, but its application is limited due to its easy solubility in water

Method used

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  • Preparation method of composite metal organic framework material colloidal solution and application thereof in optical coatings
  • Preparation method of composite metal organic framework material colloidal solution and application thereof in optical coatings
  • Preparation method of composite metal organic framework material colloidal solution and application thereof in optical coatings

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Tetraethoxysilane and water are mixed at a molar ratio of 1 to 3, add enough ethanol to obtain a homogeneous solution, and add 1 equivalent of acetic acid catalyst (relative to tetraethoxysilane), stir well at room temperature reaction to obtain silica sol.

[0035] 2.933g Zn(NO 3 ) 2 ·6H 2O is dissolved in 200 milliliters of methanol, and is completely dissolved under magnetic stirring, and 6.49 grams of 2-methylimidazole is dissolved in 200 milliliters of methanol, and is completely dissolved under magnetic stirring, and then the methanol solution of 2-methylimidazole is quickly poured into Zn ( NO 3 ) 2 ·6H 2 In the methanol solution of O, the reaction was magnetically stirred at room temperature, and the reaction solution became turbid. After 1 hour, the obtained product was separated by a centrifuge, and the obtained solid was dispersed in methanol to obtain 80 grams of Zn(Mim) 2 colloidal solution.

[0036] The above silica sol and Zn(Mim) 2 The colloid so...

Embodiment 2

[0039] Silica sol synthetic method is identical with embodiment 1, Zn(Mim) 2 Colloidal solution synthetic method is identical with embodiment 1, but Zn(Mim) 2 Without separation, directly mix the obtained reaction solution with silica sol, the silica sol accounts for 10-95% by mass, dilute with ethanol, stir and mix evenly at room temperature, and set aside.

[0040] Wash the glass substrate with pure water, dry it in an oven, and after cooling, pass the colloidal solution through the pulling method to coat the glass substrate. After pulling once, the glass is first dried at room temperature, and then placed in a high-temperature furnace The film layer is cured at a temperature of 450°C to 650°C, preferably 500°C to 550°C.

Embodiment 3

[0042] Silica sol and Zn(Mim) 2 Colloidal solution synthetic method is identical with embodiment 1, and silica sol and Zn(Mim) 2 The colloid solution is mixed, the mass percentage of the silica sol is 10-95%, and after magnetic stirring is uniform, 0.01-1% mass percentage of titanium dioxide nanoparticles is added, diluted with ethanol, magnetic stirring is uniform, and the preparation is ready for use.

[0043] Wash the glass substrate with pure water, dry it in an oven, and after cooling, use the above solution to coat the glass substrate by pulling method. After pulling once, dry the glass at room temperature first, and then put it in a high-temperature furnace. The film layer is cured at a temperature of 200°C to 650°C, preferably 400°C to 500°C.

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Abstract

The invention discloses a preparation method of a composite metal organic framework material colloidal solution and application thereof in optical coatings. The composite material is formed by compounding silicon sol and a metal organic framework material colloidal solution, and then the composite material is coated on a substrate and cured at high temperature to obtain a film with an anti-reflection function. The film has high transmissivity, and the light transmissivity of the film is obviously improved within the sunlight spectrum, particularly in a visible light range, and moreover, the film has good wear resistance and weather resistance.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to the preparation of a composite metal organic framework material colloid solution and its application on optical coatings. Background technique [0002] When light propagates in two different media, it will be reflected and refracted at the interface. From the perspective of energy, for any transparent medium, the energy of light does not completely pass through the interface, but a part of it always reflects back from the interface. According to the Fresnel reflection formula, it is assumed that the light is perpendicular to n 1 Refractive index medium incident on n 2 On the refractive index surface, regardless of the parallel component or the vertical component, the reflectivity (R) can be expressed as: [0003] R=(n 1 -n 2 ) / (n 1 +n 2 ) (1) [0004] When the light from the air (n 1 = 1) incident on the glass (n 2 =1.49), substitute to the above formula, the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/12G02B1/11G02B1/111
Inventor 林和春
Owner EAST CHINA NORMAL UNIV
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