Polyolefin/rare earth complex/carbonate composite fluorescent material and preparation method thereof
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A technology of rare earth complexes and composite fluorescence, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., to achieve the effects of labor saving, simple method, and improvement of fluorescence emission intensity
Inactive Publication Date: 2017-11-24
FUYANG NORMAL UNIVERSITY
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Therefore, the application of rare earth complexes in some fields will be limited, such as anti-counterfeiting marks, electroluminescence, biological imaging and other fields
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Embodiment 1
[0095] Ultrasonic dispersion of 10g calcium carbonate in absolute ethanol for 1 hour;
[0096]Dissolve 1mmol of terbium chloride and 3mmol of 4-chlorobenzoic acid into 10mL of absolute ethanol;
[0097] The above two solutions were mixed, put into a 250 mL three-necked flask, heated to 80° C. while stirring, and refluxed, and the reaction time was 2 hours;
[0098] After the reaction was completed, after the heating was stopped, the precipitate in the solution was filtered out and dried in an oven for 2 hours, and the drying temperature was set to 80° C. to obtain a 4-chlorobenzoic acid terbium complex / calcium carbonate complex.
Embodiment 2
[0100] Dissolve high-density polyethylene (HDPE) into toluene at a temperature of 100 °C, and prepare an HDPE toluene solution with an HDPE concentration of 5.007 mg / mL;
[0101] Disperse 2g of the terbium 4-chlorobenzoate complex / calcium carbonate complex of Example 1 in the HDPE toluene solution, ultrasonically disperse, and then stir at a temperature of 100 ° C for 1 hour;
[0102] After the reaction is completed, the mixture is stirred to room temperature, the precipitate is filtered out with suction, dried in an oven, and the drying temperature is 80° C. to obtain HDPE / 4-chlorobenzoate terbium complex / calcium carbonate composite fluorescent material, and its infrared spectrum analysis is as in the experiment. Example 1.
Embodiment 3～7
[0104] The methods used in Examples 3 to 7 are similar to those in Example 2, except that the concentrations of the prepared HDPE toluene solutions were 10.18 mg / mL, 15.02 mg / mL, 20.12 mg / mL, 25.18 mg / mL, and 30.32 mg / mL, respectively. .
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Abstract
The invention discloses a method for preparing a polyolefin / rare earth complex / carbonate composite fluorescent material. The method is characterized in that by preparing a rare earth complex / carbonate compound and a polyolefin-organic solvent solution, the rare earth complex / carbonate compound and the polyolefin-organic solvent solution are mixed and reacted, after the reaction is completed, and a mixture is filtered and dried to obtain the polyolefin / rare earth complex / carbonate composite fluorescent material. The structure of the composite fluorescent material is a polyolefin-coated rare earth complex / carbonate compound, the fluorescence intensity is large, under same luminous intensity condition, the usage of rare earth elements is greatly reduced, and the production cost is reduced. The invention provides the method for preparing the polyolefin / rare earth complex / carbonate composite fluorescent material, the method is easy to operate, and the loss of the rare earth elements can be effectively avoided.
Description
technical field [0001] The invention relates to the field of fluorescent material development, in particular to a polyolefin / rare earth complex / carbonate composite fluorescent material and a preparation method thereof. Background technique [0002] Rare earth elements have the reputation of "industrial vitamins". They have excellent magnetic, optical and electrical properties that cannot be replaced. They play a huge role in improving product performance, increasing product varieties and improving production efficiency. It refers to the 15 lanthanide elements in the periodic table, as well as the 17 elements of scandium and yttrium that have similar chemical properties to the lanthanide elements. Due to the great role of rare earth elements, they have become important elements to improve product structure, increase scientific and technological content, and promote technological progress in the industry. They are widely used in metallurgy, military, petrochemical, glass ceram...
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