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Neutron radiation-resistant polyimide coating and preparation method and application thereof

A polyimide and coating technology, applied in the field of anti-neutron radiation polyimide coating and its preparation, can solve the problems of anti-neutron radiation effect and poor heat resistance, and achieve excellent anti-neutron radiation effect , expand the scope of application, the effect of simple operation

Inactive Publication Date: 2019-09-17
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a kind of anti-neutron radiation polyimide coating and its preparation method and application, to overcome the anti-neutron radiation effect and heat resistance of anti-neutron radiation materials in the prior art. defect

Method used

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  • Neutron radiation-resistant polyimide coating and preparation method and application thereof
  • Neutron radiation-resistant polyimide coating and preparation method and application thereof
  • Neutron radiation-resistant polyimide coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Under nitrogen protection, in a three-necked flask, add 240mL of NMP, 48.8g (0.054mol) of anhydride-terminated oligomer 1 (structural formula as follows, purity >99%), 5.3g (0.036mol) of 2,4,5-triamino-3-cyano-2,4,5-triboronbicyclo[1.1.1]pentane-1-ol (structural formula as follows, Aladdin reagent, analytically pure), stirred at 5°C React for 10 hours; then raise the temperature to 115°C, 135°C, and 165°C for 1 hour respectively, and finally raise the temperature to 180°C and react at a constant temperature for 18 hours to obtain a hyperbranched polyimide solution with a solid content of 18%.

[0031]

[0032] (2) the hyperbranched polyimide solution (solid content 18%) that the silane coupling agent KH550 of 5g, the boron oxide of 0.5g, 0.05g, 220g step (1) gained are placed in planetary ball mill successively , ball milled at 50°C for 14 hours, and discharged to obtain a functional anti-neutron radiation polyimide coating.

[0033] Coating the polyimide fabric...

Embodiment 2

[0035] (1) Under nitrogen protection, in a three-necked flask, add 320mL of DMAc, 85.7g (0.057mol) of anhydride-terminated oligomer 2 (structural formula as follows, purity>99%), 7.0g (0.038mol) of 2,4,5-triamino-2,4,5-triboronbicyclo[1.1.1]pentane-1,3-diacetonitrile (structural formula is as follows, Aladdin reagent, analytically pure), stirred and reacted at 5°C for 15h ; Then the temperature was raised to 115°C, 135°C, and 165°C respectively for 1 hour, and finally the temperature was raised to 180°C for 22 hours of constant temperature reaction to obtain a hyperbranched polyimide solution with a solid content of 22%.

[0036]

[0037] (2) the hyperbranched polyimide solution (solid content 22%) that the silane coupling agent KH550 of 8g, the lithium bromide of 1g, 0.07g, 270g step (1) gained are placed in the planetary ball mill successively, Ball milling at 60° C. for 15 hours, and discharging, to obtain a functional anti-neutron radiation polyimide coating.

[0038] ...

Embodiment 3

[0040] (1) Under nitrogen protection, in a three-necked flask, add 350mL of NMP, 78.1g (0.05mol) of anhydride-terminated oligomer 3 (structural formula as follows, purity>99%), 6.2g (0.034mol) of 2,4,5-triamino-2,4,5-triboronbicyclo[1.1.1]pentane-1,3-diacetonitrile (structural formula is as follows, Aladdin reagent, analytically pure), stirred and reacted at 5°C for 17h ; Then the temperature was raised to 115°C, 135°C, and 165°C for 1 hour respectively, and finally the temperature was raised to 180°C for constant temperature reaction for 25 hours to obtain a hyperbranched polyimide solution with a solid content of 19%.

[0041]

[0042]

[0043] (2) with the gadolinium oxide of 12g, the boron carbide of 1.2g, the lithium fluoride of 0.5g successively, the hyperbranched polyimide solution (solid content 19% of the silane coupling agent KH550 of 0.08g, 310g step (1) gained %) placed in a planetary ball mill, ball milled at 65° C. for 17 hours, and discharged to obtain a f...

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PUM

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Abstract

The invention relates to a neutron radiation-resistant polyimide coating and a preparation method and application thereof. The preparation method comprises the following steps: reacting cyanoborane-containing triamine with an anhydride-terminated polyimide oligomer to obtain hyperbranched polyimide, and ball-milling and blending a functional slow neutron adsorption compound, a silane coupling agent and the hyperbranched polyimide. The method is simple to operate, environmentally friendly in process, and beneficial to mass preparation, and has good industrialization prospect. The obtained coating has excellent neutron radiation prevention effect, good heat resistance and interfacial adhesion, can further generate crosslinking reaction in radiation and thermal environments, and can be applied to extreme environments such as nuclear radiation or special environments.

Description

technical field [0001] The invention belongs to the field of polyimide paint and its preparation and application, in particular to a neutron radiation-proof polyimide paint and its preparation method and application. Background technique [0002] As an important clean energy, nuclear energy produces various ionizing radiations while ensuring energy supply and realizing low-carbon and clean development of energy, which endangers the environment and human health. Among them, neutron radiation has caused great harm to personal safety, and the development of neutron protection materials has become an urgent need in the field of nuclear energy utilization and development. [0003] As a class of high-performance organic polymers containing imide rings in the molecular chain, polyimide has excellent comprehensive properties such as high mechanical strength, high temperature resistance, and radiation resistance. It still has excellent physical and chemical properties in the radiati...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D7/61C09D7/63D06N3/12D06N3/00
CPCC08K2003/221C09D7/61C09D7/63C09D179/08D06N3/0015D06N3/12C08K3/22C08K3/38C08K3/16C08K5/544
Inventor 张清华甘锋赵昕董杰李琇廷吴婷婷
Owner DONGHUA UNIV
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