Processing technology for boron carbide neutron absorber

A neutron absorber and processing technology, applied in the field of boron carbide neutron absorber processing technology, can solve the problems of unverified welding ability, easy failure by irradiation, low boron carbide content, etc. , the effect of shortening molding or curing time and increasing productivity

CN104310399AInactive Publication Date: 2015-01-28DONGGUAN UNIV OF TECH +8
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-01-28
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a process for preparing a neutron absorber for absorbing stray neutrons, and in particular relates to a processing technology for a boron carbide neutron absorber which is wide in raw material sources, low in processing cost and simple in process and can be applied in a collimator for effectively absorbing the stray neutrons. The processing technology comprises the following steps: 1), selecting raw materials; 2) selecting moulds; 3) stirring the raw materials; 4) pressurizing and mold-filling; 5) curing and molding; 6) demolding and molding. The boron carbide neutron absorber has easily-available raw materials, is simple in processing steps and low in cost; cold press molding is generally adopted, and the difficulty in the molding process is avoided; the molding or curing time can be greatly shortened on the premise of hot press, the curing speed is increased, and the yield is improved; moreover, according to the boron carbide neutron absorber prepared by processing, the good neutron absorption can be realized, and therefore, the processing technology for boron carbide neutron absorber is suitable for industrial development and can bring long-term economic benefit.
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Description

technical field

[0001] The invention relates to a process for preparing a neutron absorber for absorbing stray neutrons, in particular to a process for producing a neutron absorber with wide source of raw materials, low processing cost, simple process, and the finished product is used in a collimator to effectively absorb stray neutrons A boron carbide neutron absorber processing technology. Background technique

[0002] Both neutrons and X-rays are powerful means for human beings to explore the microstructure of matter. Neutrons are uncharged, have magnetic moments, strong penetration, can distinguish light elements, isotopes and neighboring elements, and have non-destructive characteristics to samples Therefore, neutrons can not only explore the static microstructure of matter, but also study its dynamic mechanism. At present, neutron scattering technology plays an irreplaceable role in the research fields of biology, life, and medicine. In the neutron spectrometer, the n...

Examples

Embodiment 1

[0044] A boron carbide neutron absorber processing technology, the boron carbide neutron absorber processing technology mainly includes the following steps:

[0045] 1) Select raw materials:

[0046] Boron carbide powder: 62 parts of 500μm coarse particle powder;

[0047] Boron carbide powder: 17 parts of 100μm fine particle powder;

[0048] 15 parts of colloid;

[0049] 6 parts of curing agent;

[0050]2) Select the mould: select the mold made of polyethylene; the material of the selected mold can be polyethylene or polytetrafluoroethylene; the material performance of the mold selected for this type of material is mainly due to its weak adhesion, so other substances have no effect on the The adhesion of this kind of mold is reduced, and the mold can be quickly demoulded when demoulding, without affecting the forming effect of the boron carbide neutron absorber, and it also effectively protects the mold and prolongs the service life of the mold;

[0051] 3) Stirring raw ma...

Embodiment 2

[0056] A boron carbide neutron absorber processing technology, the boron carbide neutron absorber processing technology mainly includes the following steps:

[0057] 1) Select raw materials:

[0058] Boron carbide powder: 62 parts of 500μm coarse particle powder;

[0059] Boron carbide powder: 17 parts of 100μm fine particle powder;

[0060] 16 parts of colloid;

[0061] 7 parts of curing agent;

[0062] 2) Select the mould: select the mold made of polyethylene; the material of the selected mold can be polyethylene or polytetrafluoroethylene; the material performance of the mold selected for this type of material is mainly due to its weak adhesion, so other substances have no effect on the The adhesion of this kind of mold is reduced, and the mold can be quickly demoulded when demoulding, without affecting the forming effect of the boron carbide neutron absorber, and it also effectively protects the mold and prolongs the service life of the mold;

[0063] 3) Stir the i...