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Luminous nano composite material and its preparing method

A composite material and nanotechnology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of poor light resistance, high cost, low luminous rate, etc., and achieve the effect of improving luminous efficiency and luminous performance

Inactive Publication Date: 2003-07-23
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is difficult for general rare earth complexes to achieve nanoscale dispersion in polymer materials, and there are problems such as poor light resistance, low luminous efficiency, and high cost, so they encounter difficulties in practical applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The rare earth chloride EuCl 3 , α-naphthoic acid, organosilicon surfactant 3-triethoxysilylpropyl dimethyl dodecyl ammonium chloride molar ratio 1: 4: 2 were reacted at 20~40 ℃ for 6 hours to obtain a class A novel rare earth organosilicon light converting agent with stable structure. Stir 0.5 parts of silicone light-transforming agent and 0.6 parts of clay with a cation exchange capacity of 80meq / 100g at high speed in the presence of 20 parts of dispersion medium water to form a uniform material, and react at 60-80°C for 3-4 hours. The obtained product is a functional organoclay compound after being washed, dried and pulverized; the organoclay compound powder is dispersed in 100 parts of polydimethylsiloxane at room temperature with a strong mixer, stirred for 4 hours, and added with 10 Mix one part tetraethyl orthosilicate and one part stannous zincate, stir evenly, pour it into a polytetrafluoroethylene tray, and place it at 20-45°C for at least 14 hours to obtain ...

Embodiment 2

[0035] The rare earth chloride EuCl 3 , cinnamic acid, organosilicon surfactant 3-trimethoxysilylpropylmethylethylhexadecylammonium chloride in a molar ratio of 1:5:0.2 and reacted at 40-60°C for 4 hours to obtain a class of structurally stable A new type of rare earth organosilicon light conversion agent. Stir 1 part of organic silicon light-transforming agent and 10 parts of clay with a cation exchange capacity of 90meq / 100g at high speed in the presence of 100 parts of ethanol as a dispersion medium to form a uniform material, and react at 60-70°C for 3-5 hours. The obtained product is a functional organoclay compound after being washed, dried and pulverized; the organoclay compound powder is dispersed in 100 parts of polymethylphenylsiloxane with a strong mixer, stirred for 6 hours, and added with 5 parts Tetraethyl orthosilicate and 0.4 parts of dibutyltin dilaurate are stirred evenly, poured into a polytetrafluoroethylene tray, and placed at 20-45°C for at least 14 hour...

Embodiment 3

[0037] The rare earth chloride EuCl 3 , β-naphthoic acid, silicone surfactant 3-trimethoxysilylpropyl dimethyl octadecyl ammonium bromide in a molar ratio of 1:8:2 at 150-200°C for 3 hours to obtain a class of structure Stable new rare earth organosilicon light converting agent. Mix 6 parts of silicone light-transforming agent and 7 parts of clay with a cation exchange capacity of 80meq / 100g, stir at high speed in the presence of 200 parts of dispersion medium dimethylformamide to form a uniform material, and react at 80-100°C for 4 hours . The obtained product is a functional organoclay compound after being washed, dried and pulverized; the organoclay compound powder is dispersed in 100 parts of polydimethylsiloxane at room temperature with a strong mixer, stirred for 5 hours, and added with 5 1 part of ethyl orthosilicate and 0.3 part of dibutyltin dilaurate, stir evenly, pour it into a polytetrafluoroethylene tray, and place it at 20-45°C for at least 14 hours to obtain a...

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PUM

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Abstract

A nano-class composite luminescent material for effectively converting the ultraviolet light to red fluorescence light is prepared from polymer (100 wt portions), clay (0.5-30), RE-organosilicon as optical converting agent (0.5-10), dispersing medium (20-400), cross-linking agent (0-10) and promoter (0-1) through the reaction between nitrate or hydrochloride of Eu or Tb, organic carboxylic acid and organosilicon surfactant for 3-6 hr, the reaction between organosilicon-type optical converting agent, clay and dispersing medium to obtain organic clay compound, dispersing in polymer, stirring, adding cross-linking agent and promoter, and moulding for 0.2-24 hr.

Description

technical field [0001] The invention relates to a nano-luminescent composite material and a preparation method thereof, in particular to a polymer / rare earth organosilicon light-transforming agent-clay nano-luminescent composite material and a preparation method thereof. Background technique [0002] my country is a country rich in rare earth resources, possessing 80% of the world's exploitable rare earth reserves. The rare earth resources are widely distributed, with many varieties and complete elements. It is of great significance to deeply process rare earth resources into new functional materials with high added value. At present, the research on luminescent materials has become a hot spot in the field of scientific research, especially in recent years, interdisciplinary and new technologies have brought rare opportunities and challenges to the synthesis of luminescent materials. Polymer compounds play an important role in the transformation of rare earth fluorescent co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/54C08L33/00C08L83/00C09K11/00
Inventor 周宁琳黄晓华陆天虹李邨沈健
Owner NANJING NORMAL UNIVERSITY
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