Organic rare earth europium luminescent polypropylene (PP) fiber and preparation method thereof

A polypropylene fiber and rare earth technology, applied in the field of organic rare earth europium luminescent polypropylene fiber and its preparation, can solve the problem of poor energy level matching, oxidation resistance, poor color purity, luminous efficiency and luminous intensity, and complex luminescence. The intensity is not very high, and the effect of preventing fluorescence quenching, good luminous intensity and improving spinnability can be achieved.

Active Publication Date: 2015-06-03
济南市佳新纤维有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Eu(BA) 3 (TPPO) 2 Doped in PVP (Poly Vinyl Pyrrolidone, polyvinylpyrrolidone) for composite spinning, prepared composite nanofibers with strong anti-bleaching ability and stable luminescence; because the energy level matching between the ligand and Eu(Ⅲ) ions is not very good , the luminescence intensity of the resulting complex is not very high
Chinese patent CN101381901A, application number: 200810042269.0, prepared a series of organic small molecule fluorescent compounds doped into polypropylene for melt spinning, and prepared polypropylene light emitting fibers with good luminous performance and different luminous colors; Molecularly prepared fibers have poor oxidation resistance, color purity, luminous efficiency and luminous intensity

Method used

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  • Organic rare earth europium luminescent polypropylene (PP) fiber and preparation method thereof
  • Organic rare earth europium luminescent polypropylene (PP) fiber and preparation method thereof
  • Organic rare earth europium luminescent polypropylene (PP) fiber and preparation method thereof

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preparation example Construction

[0033] The invention provides a preparation method of organic rare earth europium luminescent polypropylene fiber, which comprises the following steps:

[0034] (1) Preparation of organic rare earth europium complex luminescent material, the chemical formula is C 24 H 16 EuN 4 SF 3 O 2 , The molecular formula is Eu(TTA) 3 DmPPhen, where TTA is: α-thiophene trifluoroformyl acetone, DmPPhen is: 2,3-dimethylpyrazino[1,10]o-phenanthroline, the structural formula is:

[0035]

[0036] The structural units of the complex are as follows:

[0037]

[0038] (2) The organic rare earth europium complex luminescent material is blended with PP (Polypropylene) slices, and then the luminescent polypropylene is prepared by melt spinning.

[0039] Specifically, the preparation method of the organic rare earth europium complex luminescent material includes the following steps:

[0040] (1) Preparation of ligand 2,3-dimethylpyrazino[1,10]phenanthroline:

[0041] a. Put 1,10-phenanthroline and potassium bro...

Embodiment 1

[0075] Rare earth europium complex Eu(TTA) 3 The preparation process of DmPPhen is as follows:

[0076] Synthesis of 1,10-phenanthroline-5,6-dione (compound 1): Weigh 1g 1,10-phenanthroline and 0.6g potassium bromide into a 100mL two-necked flask, and put the flask in Cool to -10°C in an ice-salt bath. Measure 16 mL of concentrated sulfuric acid and pour it into a 200 mL beaker, then measure 8 mL of concentrated nitric acid with a graduated cylinder. Slowly add concentrated nitric acid to the beaker with a dropper in an ice-salt bath, stir with a glass rod while dripping. The dripping takes about 30 minutes. If the dripping is too fast, it will smoke. After the acid solution is prepared, start to slowly drip into the flask. The dripping process is kept at -10°C in an ice bath, and the dripping is about 0.5h. Then, the reaction was carried out in an ice bath for 1 hour, and then the temperature was programmed to 85°C, and the reaction temperature was kept for 130 minutes. After ...

Embodiment 2

[0093] This embodiment only describes the preparation of luminescent fibers with different contents of luminescent materials and different spinning process conditions. The preparation method of the luminescent materials is the same as that in Example 1. The preparation process of the luminescent fibers is as follows:

[0094] The nano-level luminescent material prepared above and PP masterbatch are fully mixed, and the color masterbatch containing 5% organic rare earth complex is prepared by a twin-screw extruder. The vacuum degree is 0.09MPa, and it is dried at 120℃ for 12h to make it watery. The rate is less than 20ppm.

[0095] The PP polyamide chips are transported to a vacuum drum for drying, the temperature is set to 120°C, the vacuum degree is 0.095MPa, and the drying time is 8 hours.

[0096] The dried material and the masterbatch with rare earth luminescent material are fed into the single-screw extruder at the same time, and the feeding amount of the color masterbatch is co...

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Abstract

The invention discloses an organic rare earth europium luminescent polypropylene (PP) fiber and a preparation method thereof. The rare earth europium complex Eu(TTA)3DmPPhen luminescent material close to nanoscale is prepared by firstly preparing a phenanthroline neutral ligand and carrying out coordination on the phenanthroline neutral ligand and rare earth Eu (III) in combination with alpha-thenoyltrifluoroacetone and adopting a method of firstly carrying out titration under atmospheric pressure and secondly carrying out reaction under high pressure. The material emits strong pure red light at 615nm in a 10-5mol/L CH2Cl2 solution. The luminescent fiber is prepared by adopting the complex as a luminescent material and carrying out compound melt spinning on the complex and PP. When the content of the rare earth luminescent material in the fiber is 0.05%, the fiber emits stronger pure red light in a 10-5mol/L dimethyl formamide (DMF) solution and the luminescent position is still at 615nm. The luminescent fiber has the advantages of high color purity and better spinnability.

Description

Technical field [0001] The invention belongs to the field of luminescent materials and textile science, and particularly relates to an organic rare earth europium luminescent polypropylene fiber and a preparation method thereof. Background technique [0002] Rare earth elements are located in the lanthanide series of the periodic table. Because their outer electronic structures are the same and the inner 4f sub-energy levels are relatively similar, rare earth elements exhibit many unique physical and chemical properties, so they are widely used in the fields of optics, electricity and magnetism. application. Generally, the fluorescence emission of rare earth ions mainly comes from the f-f electronic transition of the 4f electron layer, 5S 2 And 5P 6 Electrons generally shield the 4f electrons, so the matrix has little effect on the light radiation transition of the 4f electron layer. This shielding effect can make rare earth ions produce sharp band emission and longer fluorescen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/10C09K11/06C07F5/00
Inventor 顾玲袁欢欢顾昕提云崇徐国华陆建许珍田
Owner 济南市佳新纤维有限公司
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