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Synthetic method for boron-containing precursor copolymer

A synthesis method and technology of precursors are applied in the synthesis field of boron-containing precursor copolymers, which can solve the problems of poor solubility, high oxygen content of boron carbide precursors, and high catalyst cost, and achieve simple operation, good solubility, and easy to obtain. Effect

Active Publication Date: 2016-06-01
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for synthesizing boron-containing precursor copolymers, which solves technical problems in the prior art, such as high oxygen content of boron carbide precursors, poor solubility, and high catalyst cost.

Method used

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  • Synthetic method for boron-containing precursor copolymer
  • Synthetic method for boron-containing precursor copolymer
  • Synthetic method for boron-containing precursor copolymer

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preparation example Construction

[0032] The synthetic method of the boron-containing precursor copolymer provided by the invention comprises the following steps:

[0033] After mixing decaborane in a dissolved state with a diene organic compound at a molar ratio of 1:1 to 10, a first reaction occurs under the catalysis of a catalyst to obtain a monomer; the monomer includes a first monomer and a second monomer, The diene organic compound used in the preparation of the first monomer is norbornadiene; the diene organic compound used in the preparation of the second monomer is 1,5-cyclooctadiene or 1,4-cyclohexadiene; The first monomer and the second monomer are dissolved and mixed at a molar ratio of 0.1 to 10:1, and a second reaction occurs under the catalysis of the catalyst to obtain a boron carbide precursor copolymer.

[0034] By adopting the method for reaction, the obtained precursor can be used to prepare boron carbide target pellets for nuclear fusion, and can also be used to prepare other boron carbid...

Embodiment 1

[0046] The present embodiment comprises the following steps:

[0047] (1) The operation was carried out in a glove box. In a 100 ml pressure bottle, 33.3 ml of dichloroethane, 8.24 g of decaborane, 20.3 ml of norbornadiene, and a magnetic stirrer were sequentially added. Wherein, decaborane and norbornadiene mol ratio are 1:3;

[0048] (2) Add Et to the reactor 4 NCl catalyst 1.1g, with decaborane molar ratio is 1:10;

[0049] (3) The temperature was raised to 120° C. at a heating rate of 2° C. / min, the stirring rate was 400 r / min, and the stirring reaction was continued for 48 hours. The finished product of the reaction was poured into a round-bottomed flask, and the solvent was removed by rotary evaporation to obtain a viscous liquid;

[0050] (4) With n-hexane as eluent, the viscous liquid obtained in step (3) is removed by silica gel column chromatography to remove residual catalyst; the solution obtained by chromatography is poured into a round-bottomed flask, and the ...

Embodiment 2

[0061] (1) The operation was carried out in a glove box. In a 100 ml pressure bottle, 33.3 ml of dichloroethane, 8.24 g of decaborane, 20.3 ml of norbornadiene, and a magnetic stirrer were sequentially added. Wherein, decaborane and norbornadiene mol ratio are 1:3;

[0062] (2) Add Et to the reactor 4 NCl catalyst 1.1g, with decaborane molar ratio is 1:10;

[0063] (3) The temperature was raised to 120° C. at a heating rate of 2° C. / min, the stirring rate was 400 r / min, and the stirring reaction was continued for 48 hours. The finished product of the reaction was poured into a round-bottomed flask, and the solvent was removed by rotary evaporation to obtain a viscous liquid;

[0064] (4) With n-hexane as eluent, the viscous liquid obtained in step (3) is removed by silica gel column chromatography to remove residual catalyst; the solution obtained by chromatography is poured into a round-bottomed flask, and the solvent is removed by rotary evaporation, The resulting product...

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Abstract

The invention provides a synthetic method for a boron-containing precursor copolymer. The synthetic method adopts a decaborane and a dienes organic compound as raw materials for reaction. A boron carbide precursor prepared by the synthetic method has high ceramic yield and boron content and favorable solubility, and can be used for preparing boron carbide pellets for nuclear fusion and other boron carbide ceramic materials.

Description

technical field [0001] The invention relates to the technical field of ceramic precursor synthesis, in particular to a method for synthesizing a boron-containing precursor copolymer. Background technique [0002] Laser-driven inertial confinement fusion mainly uses high-energy laser drivers to heat and compress fusion fuel hollow microspheres (target pellets) to high temperature and high density in a very short period of time, and then make them "ignite" in the center, and ignite to achieve subsequent nuclear reactions to achieve control Nuclear fusion, so as to obtain clean fusion energy. As a neon-neon fuel and diagnostic gas container, the design and preparation technology of the target pellet has always been the core technology in the research of laser inertial confinement fusion. According to materials, the current main target pellet systems include hollow glass microspheres, hollow plastic microspheres, hollow Be-Cu microspheres, etc. And through a variety of calcula...

Claims

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Application Information

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IPC IPC(8): C08F230/06C04B35/563C04B35/64
CPCC04B35/563C04B35/64C04B2235/48C04B2235/658C08F230/06
Inventor 苟燕子王浩王金龙简科王军邵长伟
Owner NAT UNIV OF DEFENSE TECH
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