Hydrophobic rare earth long-afterglow luminescent material, luminescent plastic and method for making same

A long-lasting luminescent and hydrophobic technology, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problem of ensuring the compatibility of powder luminescent materials with various matrix resins and affecting the luminescent properties and mechanics of polymer materials. Performance, rare earth luminescent materials are difficult to uniformly disperse and other issues, to achieve the effect of strong designability, expanding the scope of use, and improving interface compatibility

Active Publication Date: 2008-02-06
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of physical doping is difficult for rare earth polymer long afterglow materials, rare earth luminescent materials are difficult to uniformly disperse in the polymer matrix, and the force between inorganic particles and organic molecules is weak, which will affect the quality of the final prepared polymer material products. Luminescence properties and mechanical properties
[0004] The inventor of the present invention proposes to use in-situ emulsion polymerization to coat a layer of high polymer PMMA on the surface of rare earth doped strontium aluminate [Luo Yongyue, Peng Lei Lei, Dan Yi, et al. Preparation and Luminescent Properties of PMMA / Silicon Aluminum Coated Strontium Aluminate Composite Luminescent Material Based on Covalent Bonding, Polymer Materials Science and Engineering, 2007, 23(3), 156-159], The polymer long afterglow material obtained by this method has a relatively single polymer structure, and it is difficult to ensure the compatibility of the powder luminescent material with various matrix resins, and the scope of use is limited to a certain extent.

Method used

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  • Hydrophobic rare earth long-afterglow luminescent material, luminescent plastic and method for making same
  • Hydrophobic rare earth long-afterglow luminescent material, luminescent plastic and method for making same
  • Hydrophobic rare earth long-afterglow luminescent material, luminescent plastic and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 Preparation of the hydrophobic rare earth long-lasting luminescent material of the present invention

[0045] Raw materials: 50g of rare earth-doped strontium aluminate coated with silicon-aluminum binary film (provided by Sichuan University);

[0046] Coupling agent (γ-methacryloxypropyltrimethoxysilane) 4g;

[0047] Ethanol 200ml.

[0048] Add the above raw materials into the reactor, stir at 70° C. for 5 hours; dry and remove the solvent to obtain about 50 g of yellow-green powdery hydrophobic rare earth long-lasting luminescent material.

[0049] Coupling rare earth-doped strontium aluminate with MAPS coupling modified silicon-aluminum binary film can chemically adsorb silane coupling agent molecules on the surface of silicon-aluminum binary film-coated rare earth-doped strontium aluminate to make silicon-aluminum binary The film-coated rare earth-doped strontium aluminate band has unsaturated double bonds, which become a bridge between inorganic powder ...

Embodiment 2

[0051] Example 2 Preparation of the hydrophobic rare earth long-lasting luminescent material of the present invention

[0052] Raw material: 4g of the sample (Sample 3) of Patent Application No. 200610172187.9;

[0053] Coupling agent (γ-methacryloxypropyltrimethoxysilane) 0.32g;

[0054] Ethanol 16ml.

[0055] The above raw materials were put into a reactor equipped with a stirrer, a thermometer and a reflux condenser, and stirred at 75° C. for 5 hours; the solvent was dried and removed to obtain about 4 g of a yellow-green powdery hydrophobic rare earth long-lasting luminescent material.

Embodiment 3

[0056] Example 3 Preparation of hydrophobic rare earth long-lasting luminescent material of the present invention

[0057] Using the same method as in Example 1, use 4%, 6%, 8% and 10% of the MAPS coupling agent to modify the silicon-aluminum binary film to coat the rare earth-doped strontium aluminate, and extract it with absolute ethanol after drying. Extracted for 48 hours, and then dried at 120°C to prepare coupling-modified samples with different coupling agent dosages.

[0058] Hydrophobic test: all the coupling modified samples and the silicon-aluminum binary membrane coated rare earth doped strontium aluminate without coupling modification were dispersed in deionized water, and the hydrophobic characteristics of the samples were observed and evaluated. The results showed that there was no The rare-earth-doped strontium aluminate coated with silicon-aluminum binary membrane modified by coupling has strong hydrophilicity, and all sink to the bottom of the container soon;...

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Abstract

The present invention relates to hydrophobic nature rare-earth long persistence luminescent material and polymer composite rare-earth long persistence luminescent material, the polymer composite rare-earth long persistence luminescent material is got through coupling agent surface modified hydrophobic nature rare-earth long persistence luminescent material making original position emulsion polymerization with an acrylic ester type monomer or styrene type monomer. The inorganic particle of the material is combined with polyacrylic ester based on covalent bond, and is added into macromolecule material basal body resin, and is mixed evenly, plastically extruded and comminutively granulated to get luminescent plastic mother grains, the grains can be used to prepare luminescent doors and windows, luminescent sectional material and luminescent indicators etc.

Description

technical field [0001] The invention relates to a hydrophobic rare earth long afterglow luminescent material, a polymer composite rare earth long afterglow luminescent material and a preparation method thereof, belonging to the field of luminescent materials. Background technique [0002] Rare earth luminescent materials can be made into luminescent coatings, luminescent ceramics, etc., used in various indication signs, and have important uses in the fields of transportation, fire safety, architectural decoration, military products, emergency lighting, and civilian products. The rare earth luminescent materials commonly used in the past are mainly sulfide series, which contain radioactive elements, which will cause harm to human health and the environment, and greatly restrict the use of materials. Rare earth-doped strontium aluminate-based luminescent material with aluminate as the substrate, divalent europium ions as the activator, and trivalent dysprosium ions as the co-a...

Claims

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Application Information

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IPC IPC(8): C09K11/80C08K9/06C08L33/08C08F2/44
Inventor 淡宜罗勇悦张立赵昆陈通华江龙彭蕾蕾杨明娇陈山玉
Owner SICHUAN UNIV
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