Boron cage compound materials and composites for shielding and absorbing neutrons

• US 8,664,629 B2
• Filed: 08/16/2011
• Issued: 03/04/2014
• Est. Priority Date: 08/18/2010
• Status: Active Grant

• Current Assignee: Honeywell Federal Manufacturing & Technologies, LLC (Honeywell International Inc.)
• Original Assignee: Honeywell Federal Manufacturing & Technologies, LLC (Honeywell International Inc.)
• Inventors: Bowen, Daniel E. III, Eastwood, Eric A.
• Primary Examiner(s): Souw, Bernard E
• Application Number:
  US13/210,985
• Publication Number:
  US 20120043483A1
• Time in Patent Office: 931 Days
• Field of Search: 250/505.1, 250/506.1, 250/507.1, 250/515.1, 250/516.1, 250/517.1, 250/518.1, 250/519.1, 250/526, 252/389.4, 252/389.41, 252/400.4, 252/400.41, 252/478, 252/519.52, 252/520.22, 252/521.4, 252/574, 977/773, 977/775, 977/778, 977/779, 977/788, 977/902, 528 4- 8, 524/183, 525/251, 521/152
• US Class Current: 250/516.1
• CPC Class Codes: G21F 1/02 Selection of uniform shielding materials
• CPC Class Codes: G21F 3/02 Clothing
• CPC Class Codes: G21F 5/00 Transportable or portable shielded containers

Abstract

Boron cage compound-containing materials for shielding and absorbing neutrons. The materials include BCC-containing composites and compounds. BCC-containing compounds comprise a host polymer and a BCC attached thereto. BCC-containing composites comprise a mixture of a polymer matrix and a BCC filler. The BCC-containing materials can be used to form numerous articles of manufacture for shielding and absorbing neutrons.

Claims

1. A method of protecting an object or organism from neutron radiation emitted from a source of neutrons, said method comprising:

providing an article of manufacture comprising a boron cage compound-containing material; and

using said article of manufacture to protect said object or organism from said radiation, wherein said boron cage compound-containing material shields or absorbs said neutrons.

2. The method of claim 1, wherein at least about 90% of said neutrons are shielded or absorbed by said boron cage compound-containing material.

3. The method of claim 1, wherein said source of neutrons is selected from the group consisting of radio active material, nuclear reactors, and cosmic rays.

4. The method of claim 1, wherein said article of manufacture is selected from the group consisting of fabric, textiles, coatings, plastics, composites, encapsulants, containers, cases, cable sheathing, insulation, tires, o-rings, gaskets, foams, cushions, footwear soles, pads, flotation devices, waterproofing sheets, flooring, cables, membranes, films, aerogels, hoses, separators in HEPA filters, windows, lenses, optical fibers, optical sensors, and combinations thereof.

5. The method of claim 1, wherein said article of manufacture is a fabric or textile selected from the group consisting of cloth, clothing, tarps, aprons, curtains, tents, bags, linings, blankets, coverings, shoes, gloves, coats, masks, and combinations thereof.

6. The method of claim 1, wherein said article of manufacture is a coating selected from the group consisting of paints, adhesives, glues, and combinations thereof.

7. The method of claim 1, wherein said article of manufacture is a plastic or composite case, or a solid, syntactic, or foam encapsulant for electronic or photovoltaic components.

8. The method of claim 1, wherein said article of manufacture comprises a substrate having a surface and a layer of said boron cage compound-containing material adjacent said surface.

9. The method of claim 1, wherein said object is selected from the group consisting of structural materials, fuselage parts, electrical components, software, hardware, devices, containers, sensors, monitors, safety and first responder equipment, tools, gages, recording media, electronic storage devices, recordings, images, food, food packaging, and food processing equipment.

10. The method of claim 1, wherein said boron cage compound-containing material is selected from the group consisting of boron cage compound-containing compounds, boron cage compound-containing composites, and combinations thereof.

11. The method of claim 10, wherein said boron cage compound-containing material is a boron cage compound-containing compound, said compound comprising a host polymer and a boron cage compound attached thereof.

12. The method of claim 11, wherein said boron cage compound is attached to said host polymer as a pendant group, a co-monomer residue in the polymer backbone, or a crosslinked group.

13. The method of claim 11, wherein said host polymer is selected from the group consisting of epoxies, polyurethanes, silicones, polyethylenes, styrene-butadiene-styrene triblock copolymers, poly(conjugated dienes), polycyanurates, polyacetals, polyacrylics, polycarbonates, polystyrenes, polyesters, polyamides, polyamideimides, polyarylates, polyarylsulfones, polyethersulfones, polyphenylene sulfides, polyvinyl chlorides, polysulfones, polyimides, polyetherimides, polytetrafluoroethylenes, polyetherketones, polyether etherketones, poly(ether ketone ketones), polybenzoxazoles, polyoxadiazoles, polybenzothiazinophenothiazines, polybenzothiazoles, polypyrazinoquinoxalines, polypyromellitimides, polyquinoxalines, polybenzimidazoles, polyoxindoles, polyoxoisoindolines, polydioxoisoindolines, polytriazines, polypyridazines, polypiperazines, polypyridines, polypiperidines, polytriazoles, polypyrazoles, polypyrrolidines, polycarboranes, polyoxabicyclononanes, polydibenzofurans, polyphthalides, polyacetals, polyanhydrides, polyvinyl ethers, polyvinyl thioethers, polyvinyl alcohols, polyvinyl ketones, polyvinyl halides, polyvinyl nitriles, polyvinyl esters, polysulfonates, polysulfides, polythioesters, polysulfonamides, polyureas, polyphosphazenes, polysilazanes, phenolic resins, and combinations of two or more of the foregoing.

14. The method of claim of claim 10, wherein said boron cage compound-containing material is a boron cage compound-containing composite, said composite comprising a polymer matrix and a boron cage compound filler.

15. The method of claim 14, wherein said boron cage compound filler is uniformly dispersed throughout said matrix.

16. The method of claim 14, wherein said polymer matrix comprises a polymer, said polymer comprising a further boron cage compound attached thereto.

17. The method of claim 14, wherein said boron cage compound-containing composite is a nanocomposite.

18. The method of claim 14, wherein said polymer matrix comprises a polymer selected from the group consisting of epoxies, polyurethanes, silicones, polyethylenes, styrene-butadiene-styrene triblock copolymers, poly(conjugated dienes), polycyanurates, polyacetals, polyacrylics, polycarbonates, polystyrenes, polyesters, polyamides, polyamideimides, polyarylates, polyarylsulfones, polyethersulfones, polyphenylene sulfides, polyvinyl chlorides, polysulfones, polyimides, polyetherimides, polytetrafluoroethylenes, polyetherketones, polyether etherketones, poly(ether ketone ketones), polybenzoxazoles, polyoxadiazoles, polybenzothiazinophenothiazines, polybenzothiazoles, polypyrazinoquinoxalines, polypyromellitimides, polyquinoxalines, polybenzimidazoles, polyoxindoles, polyoxoisoindolines, polydioxoisoindolines, polytriazines, polypyridazines, polypiperazines, polypyridines, polypiperidines, polytriazoles, polypyrazoles, polypyrrolidines, polycarboranes, polyoxabicyclononanes, polydibenzofurans, polyphthalides, polyacetals, polyanhydrides, polyvinyl ethers, polyvinyl thioethers, polyvinyl alcohols, polyvinyl ketones, polyvinyl halides, polyvinyl nitriles, polyvinyl esters, polysulfonates, polysulfides, polythioesters, polysulfonamides, polyureas, polyphosphazenes, polysilazanes, phenolic resins, and combinations of two or more of the foregoing.

19. The method of claim 1, wherein at least about 99% of the boron atoms in said boron cage compound-containing material are ¹⁰B.

20. The method of claim 1, wherein said article of manufacture has an average minimum thickness of from about 0.13 mm to about 6.52 mm.

21. A method of shielding or absorbing neutrons emitted from a neutron source, said method comprising:

providing an article of manufacture comprising a boron cage compound-containing material; and

using said article of manufacture to contain said neutron source to thereby shield or absorb neutrons emitted from said source.

22. A fabric or textile for shielding or absorbing neutrons, said fabric or textile comprising a boron cage compound containing-material.

23. A coating for shielding or absorbing neutrons, said coating being selected from the group consisting of paints, adhesives, and glues, and comprising a boron cage compound-containing material.

24. A plastic or composite case for protecting electronic or photovoltaic components from neutron radiation, said plastic or composite comprising a boron cage compound-containing material.

25. The combination of:

a substrate having a surface; and

a layer of neutron shielding or absorbing material adjacent said substrate surface, said neutron shielding or absorbing material comprising boron cage compound-containing compounds, boron cage compound-containing composites, or a combination thereof.

26. The combination of claim 25, wherein said layer of neutron shielding or absorbing material is selected from the group consisting of fabric, textile, paint, adhesive, glue, plastic, composite, and rubber.

27. A solid, syntactic, or foam encapsulant for protecting electronic or photovoltaic components from neutron radiation, said encapsulant comprising a boron cage compound-containing material.