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Method for preparing micron-sized light diffusion core-shell hybrid microspheres through hydrothermal synthesis

A technology of hybrid microspheres and hydrothermal synthesis, which is applied in the direction of microsphere preparation, optics, optical components, etc., can solve problems that have not been reported before, and achieve easy preparation, good light diffusion effect, thermal stability and aging resistance enhanced effect

Inactive Publication Date: 2022-01-11
LISHUI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a large number of compounds can be synthesized by a facile hydrothermal method, the synthesis of light-diffusing core-shell hybrid microspheres in a hydrothermal reactor has not been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 0.04 mol of vinyltrimethoxysilane and 1.5 mol of distilled water into the reaction kettle and stir, adjust the pH to 5.5 with 0.01M dilute hydrochloric acid, react at room temperature for 4 hours, and then use 0.01M ammonia water to adjust the pH of the above reaction solution to 8.0, Continue to react at room temperature for 4 hours, stand and filter, wash with distilled water until neutral, and obtain polysiloxane microspheres.

[0018] Add 0.008mol aluminum nitrate, 0.001mol aluminum potassium sulfate, 0.008mol urea and 150g distilled water into the hydrothermal autoclave and stir to make it a transparent solution, then add 1.2g of the prepared polysiloxane microspheres and stir evenly . Install the hydrothermal autoclave and place it in an oven at 120°C for 7 hours, cool to room temperature, filter, wash with distilled water and absolute ethanol several times, and dry in an oven at 60°C for 7 hours to obtain hybrid microspheres.

[0019] Get prepared hybrid mi...

Embodiment 2

[0021] Take 0.04mol γ-methacryloxypropyltrimethoxysilane and 1.5mol distilled water and add them to another reaction kettle and stir, adjust the pH to 5.5 with 0.01M dilute hydrochloric acid, react at room temperature for 4 hours, and then use 0.01M Adjust the pH of the above reaction solution to 8.5 with ammonia water, continue to react at room temperature for 4 hours, stand and filter, wash with distilled water until neutral, and obtain polysiloxane microspheres.

[0022] Add 0.008mol aluminum chloride, 0.001mol aluminum potassium sulfate, 0.008mol urea and 150g distilled water into the hydrothermal autoclave and stir to make it a transparent solution, then add 1.2g of the prepared polysiloxane microspheres and stir uniform. Install the hydrothermal autoclave and place it in an oven at 120°C for 7 hours, cool to room temperature, filter, wash with distilled water and absolute ethanol several times, and dry in an oven at 60°C for 7 hours to obtain hybrid microspheres.

[002...

Embodiment 3

[0025] Take 0.03mol of vinyl tris(β-methoxyethoxy)silane and 1.5mol of distilled water into another reaction kettle and stir, adjust the pH to 5.5 with 0.01M dilute hydrochloric acid, react at room temperature for 4h, and then use 0.01 M ammonia water to adjust the pH of the above reaction solution to 8.0, continue to react at room temperature for 4 hours, stand and filter, wash with distilled water until neutral, and obtain polysiloxane microspheres.

[0026] Add 0.008mol zinc nitrate, 0.001mol aluminum potassium sulfate, 0.008mol urea and 150g distilled water into the hydrothermal autoclave and stir to make it a transparent solution, then add 1.2g of the prepared polysiloxane microspheres and stir evenly . Install the hydrothermal autoclave and place it in an oven at 120°C for 9 hours, cool to room temperature and filter, wash with distilled water and absolute ethanol several times, and dry in an oven at 60°C for 5 hours to obtain hybrid microspheres.

[0027] Get the prepa...

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Abstract

The invention relates to a method for preparing a micron-sized light diffusion core-shell hybrid microsphere by hydrothermal synthesis. The method comprises the following steps: preparing a polysiloxane microsphere by a simple sol-gel method, and synthesizing by a hydrothermal process by taking the polysiloxane microsphere as a template to obtain the micron-sized light diffusion core-shell hybrid microsphere. According to the invention, the microsphere has a polysiloxane microsphere inner core of 4-6 [mu]m, an outer layer is composed of a nano inorganic compound, the thickness of a shell layer is 50-150 nm, and a series of functionalized microsphere materials can be synthesized through the method; an optical performance test after a film is formed shows that the micron-sized light diffusion core-shell hybrid microsphere has an excellent light diffusion effect and relatively high light transmittance, can be widely used for preparing various light diffusion materials, and can improve the thermal stability of the film-forming resin; and the microsphere preparation method is simple, has great potential application value, and is low in cost, and the preparation process is green and environment-friendly.

Description

technical field [0001] The invention relates to a hydrothermal synthesis method for preparing micron-scale light-diffusing core-shell hybrid microspheres, which belongs to the technical field of functional materials and can be widely used in the preparation of multifunctional light-diffusing films. Background technique [0002] Liquid crystal displays (LCDs) are widely used in various display devices, such as LCD TVs, monitors, mobile phones, computers, and the like. With the development of people's living needs, the requirements for LCD are becoming more and more targeted. At present, the research and development of LCDs at home and abroad are developing in the direction of thinness, large display interface, and stable display screen. In the LCD structure, the functional design of the light diffusion film in the backlight module is particularly important. At present, the light source provided by liquid crystal display is LED point light source. Only the soft surface light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D7/61C09D7/65C09D175/14C08J7/04C08L67/02B01J13/02G02B5/02G02F1/13357
CPCC09D7/61C09D7/65C09D175/14C08J7/042G02F1/1336G02F1/133606G02B5/0268B01J13/02C08L2201/08C08J2367/02C08J2475/14C08L83/04C08K3/013
Inventor 胡金刚任俊达吴雪宁吴婕杨琪
Owner LISHUI UNIV
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