Long-persistence luminous composite fiber and preparing method thereof

A long afterglow luminescence, composite fiber technology, applied in fiber processing, filament/thread forming, conjugated synthetic polymer rayon, etc., can solve the problem of phosphors being easily damped, affecting luminous brightness, etc., and achieve spinnability. Good, high luminous brightness, not easy to peel off

Inactive Publication Date: 2004-04-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Japanese patent JP-A-7-300722 also prepares luminescent fibers by composite spinning. The skin layer is polyester polycaprol

Method used

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  • Long-persistence luminous composite fiber and preparing method thereof
  • Long-persistence luminous composite fiber and preparing method thereof
  • Long-persistence luminous composite fiber and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] Preparation of PA6 / PA6 long afterglow luminescent composite fiber

[0039] Raw material: Caprolactam 190.4g

[0040] Aminocaproic acid 4.00g

[0041] Adipic acid 0.5g

[0042] Distilled water 6.00ml

[0043] Phosphor: CaAl 2 O 4 :Eu 2+ , Nd 3+ 10.36g, average particle size: D 50 ‾ = 18.0 μm

[0044] Polyamide 6 (PA6): 300g, number average molecular weight 11500

[0045] Preparation:

[0046](1) Add caprolactam, aminocaproic acid, adipic acid, and distilled water into the reactor according to the above proportions, mix well, pass nitrogen protection, slowly heat to 140°C, stir, slowly warm up to 250°C, react at a constant temperature for 5 hours, then pump The vacuum was continued for 0.5 hr to obtain a light-emitting polyamide 6.

[0047] (2) Extract the luminescent polyamide 6 in step (1) in boiling wa...

Example Embodiment

[0051] Example 2

[0052] Preparation of PA6 / PET long afterglow composite fiber

[0053] Raw material: Caprolactam 190.4g

[0054] Aminocaproic acid 4.00g

[0055] Adipic acid 0.5g

[0056] Distilled water 6.00ml

[0057] Phosphor: SrAl 2 O 4 :Eu 2+ , Dy 3+ 31.08g, average particle size: D 50 ‾ = 2.5 μm

[0058] Polyethylene terephthalate (PET): 200g, intrinsic viscosity, 0.67

[0059] Preparation:

[0060] (1) Add caprolactam, aminocaproic acid, adipic acid, and distilled water into the reactor according to the above proportions, mix well, pass nitrogen protection, slowly heat to 140°C, stir, and slowly heat up to 210°C. After reacting for 1hr, add fluorescence After the powder is heated to 250° C. and reacted at a constant temperature for 4.5 hr, the vacuum is continued for 0.5 hr to obtain a light-emitting polyamide 6.

[0061] (2...

Example Embodiment

[0065] Example 3

[0066] Preparation of PA66 / PA66 long afterglow luminescent composite fiber

[0067] Raw material: PA66 salt 200g

[0068] Adipic acid 1.80g

[0069] Caprolactam 4.00g

[0070] Distilled water 60g

[0071] Phosphor: SrAl 14 O 25 :Eu 2+ , Dy 3+ 20g, average particle size: D 50 ‾ = 5.8 μm

[0072] Polyamide 66 100g, number average molecular weight, 12000

[0073] Preparation:

[0074] (1) Add the PA66 salt, adipic acid, caprolactam, distilled water, and fluorescent powder in the above raw materials into the autoclave, mix well, and pass N 2 Drive off the air, airtightly, slowly heat to 210°C, react for 2hr, stir, continue to slowly increase the temperature to 270°C, control the pressure to 1.47~1.96Mpa, continue the reaction for 2hr, release to normal pressure, continue the reaction for 3hr, vacuum and continue t...

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Abstract

The present invention discloses a long-afterglow luminous composite fibre and its preparation method. Said method includes the following steps: using luminous polyamide as core layer, and using fibre-formed polymer polyamide, polyester and polyolefin as skin layer, and making constituent spinning so as to obtain the invented product. The long-afterglow polymer polyamide fibre is formed from polyamide and alkaline earth metal aluminate which has luminous effective quantity and is activated by Eu(2+). The fluorescent powder is the alkaline earth metal aluminate series, and is non-toxic, has no radioactivity, high luminous intensity, long afterglow time and stable chemical property, so that it has extensive application range.

Description

technical field [0001] The invention relates to a luminescent composite fiber, in particular to a long afterglow luminescent composite fiber and a preparation method thereof. Background technique [0002] Long afterglow luminescent fibers can be used as casual clothing, dresses, warning clothing, decorations, safety signs and so on. The International Maritime Conference has clearly stipulated that on passenger and cargo ships with a capacity of more than 25 people produced after 1998, relevant parts such as passages, fire-fighting equipment and safety and life-saving facilities must be equipped with luminous safety signs to ensure safety. Irradiated luminescent fibers can be used as anti-counterfeiting signs, evening dresses in dance halls, etc. [0003] The development technology of luminescent fibers is closely related to the performance of inorganic luminescent materials. Traditional phosphors are difficult to develop practical luminescent fibers due to their poor stabil...

Claims

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Application Information

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IPC IPC(8): D01D5/34D01F1/10D01F8/14
Inventor 王华平张玉梅叶云婷
Owner DONGHUA UNIV
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