Europium-polymer nano aggregate doped polyester luminescent material and preparation method thereof
By preparing europium-polymer nano-aggregated polyester materials in PET materials, the problem of difficulty in achieving induced crystallization and efficient luminescence simultaneously in the prior art is solved, and the performance and application potential of the material are significantly improved.
Patent Information
- Application Number
- CN202510247808.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2025-05-27
AI Technical Summary
The prior art is difficult to achieve additives that induce crystallization and efficient luminescence in the same polymer material at the same time, limiting the application potential of PET materials.
By preparing europium-polymer nanoaggregate doped polyester materials, the europium ion-induced block copolymer nanoaggregates are melt blended with PET to form an efficient luminescence nucleation inducing additive.
The efficient luminescence and induced crystallization of PET materials are achieved, and the thermal stability, thermal crystallization temperature, relative crystallinity and mechanical properties of the materials are improved.
Smart Images
Figure CN120040926A_ABST
Abstract
Claims
1. A method for preparing europium-polymer nanoaggregates doped with polyester luminescent materials, characterized in that: The following steps are involved: Step 1: Preparation of Europium-polymer nanoaggregate powder EIPAs: dissolving nanoaggregate powder containing polystyrene-polyacrylic acid block copolymer PSx-PAAy, lanthanide elements and complexes in a combined solvent, stirring, and after complete reaction, subjecting the reaction solution to rotary evaporation to remove the solvent, vacuum drying the product after rotary evaporation, and further grinding to obtain EIPAs powder; Step 2: Preparation of europium-polymer nanoaggregates doped with polyester high-efficiency luminescent materials: The EIPAs powder obtained in step 1 is blended with polyester powder in a certain proportion, and vacuum dried to obtain a solid powder mixture of lanthanide-induced block copolymer nanoaggregates and polyester resin; the solid powder mixture of nanoaggregates (EIPAs) and polyester resin is melt-blended using a twin-screw micro-mixer, and extruded and granulated to obtain nanoaggregates (EIPAs) doped with polyester resin luminescent masterbatch.
2. The preparation method according to claim 1, characterized in that: The lanthanide elements include: Eu which emits red light 3+ , Sm with orange light 3+ , Ce with blue light 3+ .
3. The preparation method according to claim 1, characterized in that: The complex comprises dibenzoylmethane DBM, thiophene methane trifluoroacetone TTA and o-phenanthroline Phen.
4. The preparation method according to claim 1, characterized in that: The first step is to mix ethanol and dichloromethane in equal proportions to prepare a combined solvent, dissolve PS-PAA, Phen, EuCl3·6H2O and TTA in the solvent combination at a molar ratio of 1:1:1:3 to form a solution with a concentration of 0.1 mol / L, stir for 8 hours in an oil bath environment at 60-70°C, and start a self-assembly reaction; after the reaction is complete, perform rotary evaporation on the reaction solution to remove the solvent, and vacuum dry the product after rotary evaporation to finally obtain Eu 3+ Induced polymer nanoaggregates.
5. The preparation method according to claim 1, characterized in that: The polyester material includes polyethylene terephthalate PET, polylactic acid PLA and polystyrene PBP.
6. The preparation method according to claim 1, characterized in that: PS 42 -PAA 15 .
7. The preparation method according to claim 1, characterized in that: The second step comprises grinding EIPAs into powder, drying EIPAs and PET polyester powder in vacuum drying ovens at 80° C. and 120° C. for 48 hours, then fully mixing EIPAs with PET polyester powder at a ratio of 0.25-4wt%, pouring the mixed powder into a twin-screw micro-composite extruder and an injection molding machine; setting the feeding zone temperature to 280° C. and the mold temperature to 85° C.; adjusting the injection molding machine temperature within the range of 265° C. / 275° C. / 285° C. and the injection pressure to 60-80 MPa; and preparing a blended europium-polymer nano-aggregate doped polyester high-efficiency luminescent material.
8. The preparation method according to claim 1, characterized in that: EIPAs were fully mixed with PET polyester powder at a ratio of 0.25-1 wt%.
9. Europium-polymer nanoaggregates doped polyester luminescent material prepared according to any one of claims 1-8.
10. The use of europium-polymer nanoaggregates doped with polyester luminescent materials according to claim 9, characterized in that: Improve the thermal stability, thermal crystallization temperature, relative crystallinity and mechanical properties of linear polyester materials.