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A kind of preparation method of anti-radiation rare earth polymer fiber

A polymer fiber and polymer technology, which is applied in the field of preparation of radiation-resistant rare earth polymer fibers, achieves the effects of significant practical value, short reaction time, and simple preparation method

Active Publication Date: 2018-05-22
JIANGSU HUACHANG YARNS & FABRICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, nuclear protection technology is mainly through concrete bunkers, metal barriers and other methods. There are few household protective materials on the market. How to prepare more durable and easy-to-spin polymer fibers suitable for household anti-radiation protective materials is worth studying.

Method used

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  • A kind of preparation method of anti-radiation rare earth polymer fiber

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Effect test

Embodiment 1

[0014] A method for preparing a radiation-resistant rare earth polymer fiber, characterized in that it comprises the following steps:

[0015] (1) Preparation of rare earth dopant: Weigh 1.0 g of europium trichloride hexahydrate and dissolve it in 100 mL of ethanol, add 2.18 g of 1-(2-naphthoyl)-3,3,3 in three batches -Trifluoroacetone, after stirring at room temperature for 20 minutes, add 2.11 g of trioctylphosphine oxide, adjust the pH to 6-7, stir at room temperature overnight, and remove the solvent by rotary evaporation to obtain a light yellow viscous liquid;

[0016] (2) Preparation of rare earth polymer: add 30mL of acrylonitrile in the reaction vessel, the rare earth dopant prepared by the step (1) of 3% of the mass of acrylonitrile, the initiator AIBN of 0.5% of the mass of acrylonitrile, 250mL of solvent n-hexane, deoxygenated by nitrogen for 0.5h, reacted at 70°C for 2h, and finally poured into excess ethanol to precipitate out; filtered, vacuum dried to obtain li...

Embodiment 2

[0019] A method for preparing a radiation-resistant rare earth polymer fiber, characterized in that it comprises the following steps:

[0020] (1) Preparation of rare earth dopant: Weigh 1.2g of samarium trichloride hexahydrate and dissolve it in 100mL of ethanol, add 2.26g of 1-(2-naphthoyl)-3,3,3 in three batches - Trifluoroacetone, after stirring at room temperature for 30 minutes, add 2.20 g of trioctylphosphine oxide, adjust the pH to 6-7, stir at room temperature overnight, and remove the solvent by rotary evaporation to obtain a light yellow viscous liquid;

[0021] (2) Preparation of rare earth polymer: add 50mL of acrylonitrile in the reaction vessel, the rare earth dopant prepared in step (1) of 5% of the mass of acrylonitrile, the initiator AIBN of 0.8% of the mass of acrylonitrile, 300mL of solvent n-hexane, deoxygenated by nitrogen for 0.5h, reacted at 80°C for 2h, and finally poured into excess ethanol to precipitate out; filtered, vacuum dried to obtain light gr...

Embodiment 3

[0024] A method for preparing a radiation-resistant rare earth polymer fiber, characterized in that it comprises the following steps:

[0025] (1) Preparation of rare earth dopant: Weigh 1.1 g of europium trichloride hexahydrate and dissolve it in 100 mL of ethanol, add 2.22 g of 1-(2-naphthoyl)-3,3,3 in three batches -Trifluoroacetone, after stirring at room temperature for 25 minutes, add 2.15 g of trioctylphosphine oxide, adjust the pH to 6-7, stir at room temperature overnight, and remove the solvent by rotary evaporation to obtain a light yellow viscous liquid;

[0026] (2) Preparation of rare earth polymer: add 40mL of acrylonitrile in the reaction vessel, the rare earth dopant prepared in step (1) of 4% of the mass of acrylonitrile, the initiator AIBN of 0.65% of the mass of acrylonitrile, 275mL of solvent n-hexane, deoxygenated by nitrogen for 0.5h, reacted at 75°C for 2h, and finally poured into excess ethanol to precipitate out; filtered, vacuum dried to obtain light...

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Abstract

The invention discloses a method for preparing an anti-radiation rare earth polymer fiber. Based on chemical properties of rare-earth element europium, a rare earth polymer capable of absorbing or attenuating neutrons and gama rays is prepared by a copolymerization method, and a rare-earth polymer fiber is prepared by a wet spinning method. Compared with the polymer material prepared by the traditional physical mixing method, the polymer material prepared by the chemical copolymerization method is relatively more durable and has a longer service life and a more excellent anti-radiation effect, and the synthesized acrylonitrile polymer is more easily used for spinning. In addition, the preparation method provided by the invention is simple, the reaction time is short, the degree of industrialization is high, and the practical value is remarkable.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of radiation-resistant rare earth polymer fibers. Background technique [0002] With the continuous development of radiation medicine and nuclear technology application, all kinds of radioactive rays are widely used, and the harm of rays to human body and damage to the environment is gradually recognized by human beings. People who are often exposed to radioactive rays will experience symptoms such as skin burns, hair loss, eye pain, leukopenia, and even myeloma. At the same time, in the current unstable world situation, nuclear safety is a common concern of the public, and the demand for nuclear protection is expanding day by day. [0003] At present, nuclear protection technology is mainly through concrete bunkers, metal barriers and other methods. There are few household protective materials on the market. How to prepare more durable and easy-to-spin poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/38D01F6/54D01F1/10C08F20/44C08F2/44
CPCC08F2/44C08F20/44D01F1/106D01F6/38D01F6/54
Inventor 韩国志李森李俊
Owner JIANGSU HUACHANG YARNS & FABRICS CO LTD