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Cerium aluminum terbium rare earth light stabilizer and preparation method thereof

A light stabilizer and rare earth technology, applied in the field of light stabilizer and its preparation, can solve the problems of poor light stability, easy volatilization, uneven dispersion, etc., and achieve the effect of strong operability and simple method

Active Publication Date: 2019-09-20
BAOTOU RES INST OF RARE EARTHS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are following problems in above-mentioned photostabilizer: the one, poisonous, volatile, migration and exudation, and easy to be extracted by medium etc.; The organic polymer material matrix, other fillers or the environment react, resulting in the failure of its photostability
Inorganic light stabilizers are also called light shielding agents, mainly including iron oxide, chromium oxide, lead oxide, titanium dioxide and terbium oxide, etc. Poor compatibility of the molecular matrix and uneven dispersion can easily lead to a decrease in the mechanical properties of the organic polymer matrix

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]

[0033] (a) 6.31g Ce(NO 3 ) 3 ·6H 2 O, 51.49g Al(NO 3 ) 3 9H 2 O and 1.16g Tb(NO 3 ) 3 ·5H 2 O was dissolved in deionized water and replenished to a volume of 300 mL to form a mixed aqueous solution. Add 2 g of dispersant PEG6000 to the mixed aqueous solution to dissolve, heat to 60 ° C, and under constant temperature conditions, drop in an aqueous solution of ammonium bicarbonate with a concentration of 2 mol / L to react.

[0034] (b) When the pH value of the mixed aqueous solution is 7.5, stop the reaction, filter the reaction product to obtain a precipitate, wash the precipitate with deionized water, and then dry it at 80°C for 24 hours to obtain a precursor powder; place the precursor powder in a horse boiling furnace In the process, the temperature was raised from room temperature to 200°C, kept for 1h, and then raised from 200°C to 400°C, kept for 1h, and the heating rate was 10°C / min to obtain the cerium-aluminum-terbium rare earth compound.

[0035] (...

Embodiment 2

[0037]

[0038] (a) 14.07g CeCl 3 ·7H 2 O, 14.20g AlCl 3 ·6H 2 O, 1.00g TbCl 3 ·6H 2 O was dissolved in deionized water and replenished to a volume of 300 mL to form a mixed aqueous solution. Add 0.5g of dispersant PEG4000 and 0.5g of polyacrylamide to the mixed aqueous solution to dissolve, heat to 60°C, and drop in an aqueous solution of ammonium bicarbonate with a concentration of 2mol / L while stirring at a constant temperature for reaction.

[0039] (b) When the pH value of the mixed aqueous solution is 7.5, stop the reaction, filter the reaction product to obtain a precipitate, wash the precipitate with deionized water, and then dry it at 100°C for 2 hours to obtain a precursor powder; place the precursor powder in In a horse boiling furnace, the temperature was raised from room temperature to 200°C and kept for 1 hour, then the temperature was raised from 200°C to 400°C and held for 1 hour at a heating rate of 10°C / min to obtain a cerium aluminum terbium rare eart...

Embodiment 3

[0042]

[0043] (a) 8.66g CeCl 3 ·7H 2 O, 23.67g AlCl 3 ·6H 2 O, 2.00g TbCl 3 ·6H 2 O was dissolved in deionized water and replenished to a volume of 300 mL to form a mixed aqueous solution. Add 0.3g of dispersant PEG20000 and 0.2g of polyacrylamide to the mixed aqueous solution to dissolve, heat to 70°C, and drop in 15wt% sodium hydroxide aqueous solution while stirring at constant temperature to react.

[0044] (b) When the pH value of the mixed aqueous solution is 7.5, stop the reaction, filter the reaction product to obtain a precipitate, wash the precipitate with deionized water, and then dry it at 100°C for 8 hours to obtain a precursor powder; place the precursor powder in In a horse boiling furnace, the temperature was raised from room temperature to 200°C and kept for 1 hour, then the temperature was raised from 200°C to 600°C and held for 1 hour at a heating rate of 10°C / min to obtain a cerium-aluminum-terbium rare earth compound.

[0045] (c) Kneading the ob...

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PUM

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Abstract

The invention discloses a cerium aluminum terbium rare earth light stabilizer and a preparation method thereof. The cerium aluminum terbium rare earth light stabilizer comprises 15 to 65 parts by weight of CeO2, 30 to 82 parts by weight of Al2O3 and 0.1 to 10 parts by weight of Tb4O7. The cerium aluminum terbium rare earth light stabilizer of the invention has a broad-spectrum ultraviolet shielding function, superior light stability and good compatibility with an organic polymer material matrix.

Description

technical field [0001] The invention relates to a light stabilizer and a preparation method thereof, in particular to a cerium aluminum terbium rare earth light stabilizer and a preparation method thereof. Background technique [0002] Organic macromolecular materials are macromolecules with multiple repeating monomer units formed by covalent bonding of one or several molecules or molecular groups, with a molecular weight of up to 10 3 ~10 8 . They can be natural products, such as fibers, proteins and natural rubber, etc.; they can also be made by synthetic methods, such as synthetic rubber, synthetic resin, synthetic fiber and other non-biological polymers. Organic polymer materials are characterized by many types, low density (only 1 / 7 to 1 / 8 of steel), high specific strength, good electrical insulation, corrosion resistance, easy processing, and can meet the requirements of various special purposes. . Organic polymer materials include plastics, fibers, rubber, coating...

Claims

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Application Information

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IPC IPC(8): C08K3/22C08K9/04C08K9/06C08L27/06
CPCC08K3/22C08K9/04C08K9/06C08K2003/221C08K2003/2213C08K2003/2227C08L2201/08C08L27/06
Inventor 于晓丽杨占峰肖剑周晓东吴豪陈明光芦婷婷白雪王慧李波曹鸿璋葛瑞祥曹露雅张玉玺
Owner BAOTOU RES INST OF RARE EARTHS
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