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Method for preparing rare earth fluorescent fiber

A rare earth fluorescence and fiber technology, applied in the field of fiber manufacturing, to achieve the effect of facilitating industrial operation, simplifying process and equipment, and reducing costs

Inactive Publication Date: 2010-09-22
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Within the scope of the applicant's search, the flash spinning method is only used to make fibers, especially superfine fibers, and there is no report on making luminescent functional fibers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The polyethylene rare earth fluorescent fiber is prepared by the method of the invention.

[0016] 10g polyethylene and 0.1g ternary organic rare earth complex Ln 2 m 1 (M 2 )R, the particle size is 30nm, put it in an autoclave, add 100ml of solvent 1,2-dichloroethane, stir evenly, heat and pressurize the autoclave, and stir for 15min at a temperature of 200°C and a pressure of 15MPa to make Polyethylene and ternary organic rare earth complex Ln 2 m 1 (M 2 )R is uniformly dispersed in 1,2-dichloroethane. Then open the discharge control valve of the autoclave, so that the spinning solution is sprayed out quickly, the solvent is vaporized instantly and the polyethylene fiber is stretched at a high rate, and the three-dimensional network polyethylene rare earth fluorescent fiber can be obtained on the receiving device.

[0017] After inspection, the diameter of the polyethylene rare earth fluorescent fiber prepared in this example is between 500nm and 5μm, with an av...

Embodiment 2

[0019] The polyester rare earth fluorescent fiber is prepared by the method of the invention.

[0020] 8g polyester and 0.05g ternary organic rare earth complex Ln 2 m 1 (M 2 ) R, the particle diameter is 100nm, put into the autoclave, add the solvent chloroform of 120ml, stir evenly and the autoclave is heated and pressurized. At a temperature of 350°C and a pressure of 20 MPa, stir for 30 minutes to make the polyester and the ternary organic rare earth complex Ln 2 m 1 (M 2 )R is evenly dispersed in chloroform, and then the autoclave discharge control valve is opened to make the spinning solution spray out rapidly, the solvent is vaporized instantly and the polyester fiber is stretched at a high power, and the three-dimensional network polyester can be obtained on the receiving device Fluorescent fibers.

[0021] After inspection, the diameter of the polyester fluorescent fiber prepared in this example is between 200nm and 5μm, with an average value of 1.5μm. The fiber...

Embodiment 3

[0023] The polyvinylidene fluoride rare earth fluorescent fiber is prepared by the method of the invention.

[0024] 12g polyvinylidene fluoride and 0.2g ternary organic rare earth complex Ln 2 m 1 (M 2 ) R, with a particle size of 50 nm, was put into an autoclave, and 150 ml of solvent cyclohexane was added, stirred evenly and the autoclave was heated and pressurized. Stir for 30 minutes at a temperature of 220°C and a pressure of 20 MPa to make polyvinylidene fluoride and ternary organic rare earth complex Ln 2 m 1 (M 2 )R is uniformly dispersed in cyclohexane, and then the autoclave discharge control valve is opened, so that the spinning solution is sprayed out rapidly, the solvent is vaporized instantly and the polyvinylidene fluoride fiber is conventionally stretched at a high power, and it can be obtained on the receiving device Three-dimensional network polyvinylidene fluoride fluorescent fiber.

[0025] After inspection, the diameter of the polyvinylidene fluorid...

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Abstract

The invention discloses a method for preparing rare earth fluorescent fiber. A flash vaporization process is adopted. The method comprises the following steps of: putting a polymer and a nano rare earth fluorescent material into a high-pressure autoclave in a mass ratio of 100:0.5-5 for uniform mixing; adding a solvent into the mixture, wherein 50 to 200ml of the solvent is added into every 10g of the polymer; fully and uniformly stirring the mixture; heating to raise the temperature; fully dissolving the polymer at the temperature of between 150 and 350 DEG C under the pressure of between 5 and 25MPa; continuously stirring the mixture for 10 to 30 minutes; opening the high-pressure autoclave for discharging and controlling the valve to make the spinning solution eject from a nozzle; and performing high stretching on the cured polymer by high-speed air flow to obtain the rare earth fluorescent fiber, wherein the polymer is polyolefin, polyethylene terephthalate, polysulfone or polyvinylidene fluoride; the nano rare earth fluorescent material is Ln2M1(M2)R and has a grain diameter of 30 to 100nm; and the solvent is 1,2-dichloroethane, chloroform or hexamethylene.

Description

technical field [0001] The invention relates to a fiber manufacturing technology, in particular to a method for preparing rare earth fluorescent fibers by using a flash evaporation method. Background technique [0002] Rare earth elements have special photoelectromagnetic properties, and are the "treasure house" for the research and development of various new functional materials, which are constantly deriving new high-tech industries. An important application field of rare earth elements is the preparation of fluorescent materials. At present, the preparation method of the rare earth fluorescent fiber is mainly to mix the nano-rare earth fluorescent material powder and the polymer uniformly, and then granulate through a granulator, and then spin through a spinning machine and stretched by a stretching machine to obtain a rare earth fluorescent fiber. This production process has many steps, long process and complex operation, and due to the high viscosity of the polymer mel...

Claims

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Application Information

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IPC IPC(8): D01F1/10D01F6/46D01F6/92D01F6/48D01F6/94
Inventor 程博闻夏磊西鹏
Owner TIANJIN POLYTECHNIC UNIV
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