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Core-shell-type optical diffusion hybrid microsphere and preparation method thereof

A technology of hybrid microspheres and light diffusion, applied in the field of functional materials, to achieve good light diffusion effect, good heat aging resistance, and strong ultraviolet absorption performance

Inactive Publication Date: 2014-07-23
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of organic-inorganic hybrid microspheres in the field of light diffusion film has never been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Get 10g of cerium nitrate hexahydrate and dissolve it in 250g of absolute ethanol, then add 26g of triethanolamine therein, stir and react at room temperature for 3h, let it stand, filter, wash with 20g of absolute ethanol several times until the filtrate is neutral, and then Dry at 60°C for 3 hours to obtain cerium nitrate triethanolamine complex. Then add 1g of the cerium complex, 200g of distilled water, 3g of methyl methacrylate, 3g of γ-methacryloxypropyl trimethoxysilane (KH570) and 0.3g of ammonium persulfate into the reaction kettle, and react at 75°C 4h, then adjust the pH to 8.5 with 10wt% ammonia water, react at 50-60°C for 3h, cool, filter, wash with distilled water several times until the filtrate is neutral, dry at 70°C for 5-8h, and obtain the core-shell light diffusion hybrid Microspheres.

Embodiment 2

[0018] Get 10g of cerium nitrate hexahydrate and dissolve it in 250g of absolute ethanol, then add 25g of triethanolamine therein, stir and react at room temperature for 3h, let stand, filter, wash with 20g of absolute ethanol for several times until the filtrate is neutral, and then Dry at 60°C for 3 hours to obtain cerium nitrate triethanolamine complex. Then take 1g of the complex, 200g H 2 O, 3g of isobornyl acrylate, 3g of vinyltrimethoxysilane (VTMS) and 0.3g of ammonium persulfate were reacted at 80°C for 4h, then adjusted to pH 8.5 with 8wt% ammonia water, reacted at 50-60°C for 3h, cooled, Filter, wash with distilled water several times until the filtrate is neutral, and dry at 70°C for 5-8 hours to obtain core-shell light-diffusing hybrid microspheres.

Embodiment 3

[0020] Get 10g of cerium chloride heptahydrate and dissolve it in 300g of absolute ethanol, then add 30g of triethanolamine therein, stir and react at room temperature for 3h, let stand, filter, and wash with 20g of absolute ethanol several times until the filtrate is neutral, then Dry at 60°C for 3h to obtain cerium chloride triethanolamine complex. Then take 1g of the complex, 200g H 2 O, 3g of styrene, 3g of vinyl tris(β-methoxyethoxy)silane (KH172) and 0.3g of ammonium persulfate were reacted at 75°C for 4h, and then the pH was adjusted to 8.5 with 6wt% ammonia water, 50-60 React at ℃ for 3 hours, cool, filter, wash with distilled water several times until the filtrate is neutral, and dry at 70℃ for 5-8 hours to obtain core-shell light-diffusing hybrid microspheres.

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PUM

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Abstract

The invention relates to a core-shell-type optical diffusion hybrid microsphere and a preparation method thereof. The hybrid microsphere is obtained by carrying out a copolymerization reaction, a hydrolysis reaction and a condensation reaction on a cerium complex, a vinyl unsaturated monomer, a siloxane monomer containing double bonds and a sulfur-containing initiator, wherein an inner core of the hybrid microsphere is formed by a nanometer ceria hybrid copolymer; the nanometer ceria is from 30nm to 40nm in size; and a shell layer of the hybrid microsphere is formed by a polysiloxane condensation polymer. The white hybrid microsphere is from 350nm to 500nm in size and can be used for preparing an optical diffusion film in a liquid crystal display backlight module and ensuring that the good mechanical and abrasion-resistant performance of the optical diffusion film is obtained as well as the heat stability and the transparency of the optical diffusion film are improved. Thus, the hybrid microsphere is especially suitable for preparing an ultra-thin scratch-resistant optical diffusion film with good flexibility.

Description

technical field [0001] The invention relates to a core-shell light-diffusing microsphere and a preparation method thereof, belonging to the technical field of functional materials. Background technique [0002] In the current e-commerce era, many workers need to work in front of computers, but they often overlook a problem, which is computer radiation. Radiation is relatively harmful to the human body. Computer radiation pollution will not only affect the circulatory system, immunity, reproduction and metabolic functions of the human body, but also induce cancer and accelerate the proliferation of cancer cells in the human body. In addition, it will also affect people's reproductive system, manifested as lower sperm quality in men, spontaneous abortion and fetal malformation in pregnant women, etc.; affect people's cardiovascular system, manifested as palpitations, insomnia, menstrual disorders, bradycardia, and stroke volume in some women. reduction, sinus arrhythmia, leuk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L33/10C08L33/08C08L25/08C08K3/22C08F220/14C08F230/08C08F220/18C08F212/08C08F2/44C08G77/20
Inventor 周钰明胡金刚盛晓莉何曼张涛于淑娜
Owner SOUTHEAST UNIV
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