Photoluminescent transparent epoxy nanometer composite material, preparation method and application thereof

A nanocomposite material and photoluminescence technology are applied in the field of photoluminescence transparent epoxy nanocomposite materials and their preparation, which can solve the problems of easy agglomeration, growth, change in the fluorescence properties of ZnO quantum dots, and decrease in fluorescence efficiency, etc. Long service life, avoid light scattering effect

Inactive Publication Date: 2009-01-07
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The process of separating and storing ZnO quantum dots is very easy to agglomerate and grow up, which will lead to changes in the fluorescence properties of ZnO quantum dots and a decrease in fluorescence efficiency

Method used

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  • Photoluminescent transparent epoxy nanometer composite material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 0.439g of zinc acetate to 50ml of ethanol solution to obtain a 0.04mol / L ethanol solution of zinc acetate, reflux distillation for 3 hours, during which about 30ml of distilled fractions are added; 0.173g of lithium hydroxide is added to 30ml of ethanol solution, and ultrasonically dissolved After 1 h, a 0.25 mol / L lithium hydroxide solution in ethanol was obtained. About 20ml of the remaining fraction was uniformly mixed with 30ml of lithium hydroxide solution under an ice-water bath, and magnetically stirred for 5min. The prepared colorless transparent solution is the ethanol solution of the ZnO quantum dots (the obtained ZnO quantum dots have a particle diameter of 1-5 nm).

[0040] Add 0.3 ml of oleic acid dropwise to the ethanol solution of ZnO quantum dots prepared in the above steps, stir with magnetic force for 5 min and then centrifuge the fraction. Pour off the upper layer solution, immediately add acetone to the resultant, and ultrasonically disperse for...

Embodiment 2

[0042] Add 2.195g of zinc acetate to 100ml of ethanol solution to obtain a 0.10mol / L ethanol solution of zinc acetate, reflux distillation for 3 hours, during which about 60ml of the distilled fraction was added; 0.587g of lithium hydroxide was added to 60ml of ethanol solution, and ultrasonically dissolved After 1 h, a 0.42 mol / L lithium hydroxide solution in ethanol was obtained. About 40ml of the remaining fraction and 60ml of lithium hydroxide solution were uniformly mixed under an ice-water bath, and magnetically stirred for 10min. The prepared colorless transparent solution is the ethanol solution of ZnO quantum dots (the obtained ZnO quantum dots have a particle diameter of 2-10 nm).

[0043] Add 0.6 ml of oleic acid dropwise to the ethanol solution of ZnO quantum dots prepared in the above steps, and centrifuge the fraction after magnetic stirring for 5 min. Pour off the upper layer solution, immediately add acetone to the resultant, and ultrasonically disperse for 30...

Embodiment 3

[0045]Add 3.285g of zinc acetate to 100ml of ethanol solution to obtain a 0.15mol / L ethanol solution of zinc acetate, reflux distillation for 2h, during which about 40ml of the distilled fraction is added; 0.46g of lithium hydroxide is added to 40ml of ethanol solution, and ultrasonically dissolved After 1.0 h, a 0.50 mol / L lithium hydroxide solution in ethanol was obtained. The remaining fraction of about 60ml was uniformly mixed with 40ml of lithium hydroxide solution under an ice-water bath, and magnetically stirred for 20min. The prepared colorless transparent solution is the ethanol solution of the ZnO quantum dots (the obtained ZnO quantum dots have a particle diameter of 5-15 nm).

[0046] Add 0.8 ml of oleic acid dropwise to the ethanol solution of ZnO quantum dots prepared in the above steps, stir with magnetic force for 2 min and then centrifuge the fraction. Pour off the upper layer solution, immediately add acetone to the resultant, and ultrasonically disperse for...

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Abstract

The invention relates to a photoluminescence transparent epoxy nanometer composite material, a manufacturing method and the usage. The composite material comprises transparent epoxy resin matrix material and photoluminescence inorganic nanometer fillers uniformly dispersed in the epoxy resin matrix material; the transparent epoxy resin matrix material comprises epoxy resin and acid anhydrides epoxy curing agent. The epoxy resin is alicyclic epoxy resin, bisphenol A type epoxy resin or hydrogenated bisphenol A type epoxy resin. The acid anhydrides epoxy curing agent is methyl hexahydro-pthalic anhydride or hexahydrophthalic anhydride containing 1.0-5.0wt percent of curing accelerator. The curing accelerator is amine curing accelerator or imidazole curing accelerator. The composite material of the invention is provided with good transparency and photoluminescence, can be used for substituting the traditional sealing mode of phosphor adding packaging material and can be directly applied to the sealing of LED luminescence semiconductor devices, large outdoor neon lamps, etc.

Description

technical field [0001] The present invention relates to a kind of photoluminescent transparent epoxy nanocomposite material and its preparation method and application, more specifically, the present invention relates to a kind of photoluminescent transparent epoxy nanocomposite material whose filler is nanometer inorganic semiconductor quantum dot particles And its preparation method and use. Background technique [0002] Light Emitting Diode (LED) is a new type of high-efficiency solid light source that can emit light with weak electric energy. The traditional white light technology of LED is to coat phosphor powder on the LED chip and then encapsulate it with epoxy resin to realize white light emission. There are three specific methods to achieve white light: (1) coating a yellow phosphor that can be excited by blue light on the blue LED chip, and the blue light emitted by the chip and the yellow light emitted by the phosphor complement each other to form white light; (2)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/00C09K11/54C08L63/00
Inventor 付绍云杨洋李元庆肖红梅
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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