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A method of boron coating

A technology of coating boron and boron powder, which is applied in the field of neutron detection, can solve the problems of low raw material utilization rate and long processing time, and achieve the effects of rich variety, reduced occupation time, and small shape restrictions

Active Publication Date: 2021-12-28
NUCTECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can be applied to the coating of complex surface structures or substrates with large aspect ratio, but the utilization rate of raw materials is very low, and it requires a long processing time

Method used

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  • A method of boron coating
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  • A method of boron coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] In this example, we used nano-sized boron powder particles to coat boron on the aramid paper honeycomb base material with an aspect ratio of 30:1 to make a new thermal neutron converter.

[0088] The boron coating method includes the following steps:

[0089] i) prepare the substrate, clean the surface, weigh and record;

[0090] ii) Coating resin layer

[0091] Prepare an appropriate amount of base resin solution according to the following formula and mix well.

[0092] Resin: curing agent: solvent=250:62.5:1000 (weight ratio).

[0093] Completely immerse the base material in the resin solution for 20 minutes, take out the base material, drain it slightly, and bake it in an oven at 140°C for 30-40 minutes to fully harden the resin and evaporate the solvent completely.

[0094] After the temperature of the substrate dropped to room temperature, the weight was recorded. The weight gain was 3.9g, and the thickness of the resin layer was about 1.5μm in a single increase...

Embodiment 2

[0106] In this embodiment, we use nano-sized boron powder particles to coat boron on an aluminum substrate with a length of 100 mm and a width of 50 mm to make a new thermal neutron converter. Experiments have proved that when the aluminum substrate is coated with boron, a better surface effect can be obtained by directly coating the boron-containing coating without coating the resin layer.

[0107] The boron coating method includes the following steps:

[0108] i) prepare the substrate, clean the surface, weigh and record;

[0109] ii) Applying a boron-containing coating

[0110] Prepare an appropriate amount of boron-containing resin solution according to the following formula, and mix well.

[0111] Nanoscale boron powder: resin: curing agent: solvent=180:16:4:1000 (weight ratio)

[0112] It is required that the ratio of boron powder: (resin + curing agent) is about 9:1; solute (boron powder + resin + curing agent): solvent is about 1:5.

[0113] Completely immerse the ...

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Abstract

The present invention relates to a boron-coating method, a boron-containing resin solution, a boron-coated thermal neutron converter obtained by the boron-coating method, and a boron-coated thermal neutron converter containing the boron-coated thermal neutron converter. Thermal neutron detectors for converters. The boron-coating method of the present invention comprises the following steps: 1) coating the boron-containing resin solution of the present invention on the inner surface and / or the outer surface of the substrate; 2) removing the solvent in the boron-containing resin solution, and The resin is allowed to harden to form a boron-containing coating on the surface of the substrate. This method is applicable to a wide variety of substrates with small shape restrictions, and is especially suitable for substrates with complex surfaces and structures with large aspect ratios.

Description

technical field [0001] The invention belongs to the technical field of neutron detection, and specifically relates to a boron-coating method, a boron-containing resin solution, a boron-coated thermal neutron converter obtained by the boron-coating method, and a boron-coating thermal neutron converter. A thermal neutron detector comprising the boron-coated thermal neutron converter. Background technique [0002] With the increasing application of neutron detection and imaging technology in homeland security, material monitoring, and measurement of neutron scattering sources, the demand for neutron detectors is also increasing. However, previously widely used 3 He gas can no longer meet the growing demand, and different types of new neutron detectors have been developed to replace 3 He, including gas neutron detectors, scintillator neutron detectors, semiconductor neutron detectors, etc. Among them, the boron-coated gas neutron detector is a more important research point. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/61G01T3/00
CPCC09D163/00C09D7/61G01T3/00C08K3/02C08K2201/011C08G59/245C08G59/5006C09D1/00B05D1/18B05D2202/25B05D2202/45B05D2203/22B05D2504/00B05D7/546B05D2601/28B05D7/22B05D3/0254B05D7/51B05D2350/60G01T3/08B05D7/14B05D7/02B05D5/12B05D1/02B05D1/28C09D5/031B05D3/0209
Inventor 杨祎罡方竹君李玉兰
Owner NUCTECH CO LTD
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