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Preparation method of silicone rubber composite material with fluorescence

A composite material and fluorescence performance technology, applied in the field of preparation of functional polymer materials, can solve the problems of low fluorescence intensity and low absorption coefficient, and achieve the effects of increasing doping concentration, increasing fluorescence lifetime and reducing energy loss

Inactive Publication Date: 2012-07-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fluorescent substance of the present invention is a rare earth phosphate, and the light absorption coefficient is small under visible light and ultraviolet light, and the fluorescence intensity is relatively low.

Method used

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  • Preparation method of silicone rubber composite material with fluorescence
  • Preparation method of silicone rubber composite material with fluorescence
  • Preparation method of silicone rubber composite material with fluorescence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of mixed powder of rare earth complexes and mesoporous silica

[0036] Add 6.0 g of polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer (P123), 180 mL of 2 mol / L HCl, and 45 mL of deionized water into the flask, and stir at 40°C until P123 is completely dissolved. Add 13.0 g of tetraethyl orthosilicate into the flask, keep the temperature constant, and stir for 24 hours. Then, the temperature was raised to 90°C, stirring was stopped, and crystallization was carried out for 24 hours. The reacted product was separated by suction filtration, washed several times with deionized water, and the powder after suction filtration was extracted at 130° C. for 24 hours using ethanol as a solvent. Place the extracted powder in a vacuum oven and dry at 80°C for 6 hours to obtain mesoporous silica SBA-15;

[0037] 5 mmol of europium oxide (Eu 2 o 3 ) and 6 mL of 12 mol / L HCl and 6 mL of deionized water were stirred at 80-90° C. for about 3 h. Heating wa...

Embodiment 2

[0050] A preparation method of a silicone rubber composite material with fluorescent properties, comprising the following steps:

[0051] (1) Preparation of rare earth complex doped mesoporous silica mixed powder

[0052] a. Using polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer as template and tetraethyl orthosilicate as raw material to prepare mesoporous silica SBA-15, the specific steps are as follows:

[0053] Add polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer (P123), 2mol / L HCl, and deionized water into the flask, wherein the polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer The weight ratio of HCl to deionized water is 1:7, and the volume ratio of HCl to deionized water is 3:1. At 40°C, stir until P123 is completely dissolved, then add tetraethyl orthosilicate into the flask, orthosilicate The weight ratio of acid tetraethyl ester to polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer is 2:1, the temperature ...

Embodiment 3

[0060] A preparation method of a silicone rubber composite material with fluorescent properties, comprising the following steps:

[0061] (1) Preparation of rare earth complex doped mesoporous silica mixed powder

[0062] a. Using polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer as template and tetraethyl orthosilicate as raw material to prepare mesoporous silica SBA-15, the specific steps are as follows:

[0063] Add polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer (P123), 2mol / L HCl, and deionized water into the flask, wherein the polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer The weight ratio of HCl to deionized water is 1:8, and the volume ratio of HCl to deionized water is 5:1. At 40°C, stir until P123 is completely dissolved, then add tetraethyl orthosilicate into the flask, orthosilicate The weight ratio of acid tetraethyl ester to polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer is 3:1, the temperature ...

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Abstract

The invention relates to a preparation method of a silicone rubber composite material with fluorescence. The preparation method comprises the following steps: preparing mesoporous silicon dioxide SBA-15 by taking a polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer as a template and tetraethyl orthosilicate as a raw material; preparing a rare earth complex Eu(Pht)3Phen by taking europium oxide (Eu2O3), potassium hydrogen phthalate (KHPht) and 1,10-phenanthroline (Phen) as raw materials; mixing the rare earth complex Eu(Pht)3Phen with the mesoporous silicon dioxide SBA-15, stirring, performing ultrasonic dispersion, volatilizing the solvents, and performing vacuum drying to obtain the mixed powder Eu(Pht)3Phen / SBA-15; and blending the mixed powder Eu(Pht)3Phen / SBA-15 with silicone rubber by a two roll mill, and performing hot pressing and vulcanization to obtain the silicone rubber composite material with fluorescence. The silicone rubber composite material prepared by the invention shows characteristic fluorescence emission peaks of rare earth europium, and has the advantages of high fluorescence intensity, long fluorescence lifetime and the like.

Description

technical field [0001] The invention relates to a preparation method of a functional polymer material, in particular to a preparation method of a silicone rubber composite material with fluorescent properties. Background technique [0002] Rare earth elements have a unique outer electronic structure, and can react with organic ligands with high light absorption coefficients to form rare earth organic complexes. They have the advantages of high fluorescence intensity, bright and pure colors, and long fluorescence lifetimes. They are widely used in displays, biological probes, etc. field. Doping rare earth organic complexes into polymer materials can prepare polymer materials with fluorescent properties, and the dispersion of rare earth complexes in the polymer matrix has a significant impact on the fluorescence properties of polymer composites, not only affecting the fluorescence Intensity also affects the fluorescence lifetime. Mesoporous silica SBA-15 has a certain rigidi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08K7/26C08K5/00C07F5/00C01B33/12
Inventor 徐圣杰任文坛张勇张隐西
Owner SHANGHAI JIAO TONG UNIV
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