Plasticized flexible pyrotechnic material and methods of using the same

Patent metadata

Field	Value
Publication number	US-2022017431-A1
Application number	US-202117203325-A
Country	US
Kind code	A1
Filing date	Mar 16, 2021
Priority date	Mar 24, 2020
Publication date	Jan 20, 2022
Grant date	—

Abstract

The present disclosure describes a unique plasticized pyrotechnic material which can be easily portioned and formed or molded into a desired shape and which burns at a high temperature (>2000° C.) but does not detonate. The plasticized pyrotechnic material may preferably include a combination of about 70-99% by weight of a pyrotechnic composition and about 1-30% by weight of a plasticizer composition comprising various low to mid molecular weight polyisobutylenes. The pyrotechnic material comprises inorganic oxidizers (e.g. metal oxides, oxohalide salts, nitrates, nitrites, chlorates/perchlorates) and metal or metal oxides powders mixed intimately. The plasticizer may include a small amount of a fluoropolymer, such as polytetrafluoroethylene (PTFE) and may also include up to 1-2% by weight of a processed oil, such as a mineral oil or motor oil. Some embodiments may also include a biocide precursor molecule.

First claim

What is claimed:

1 . A pyrotechnic material comprising a combination of:
50-99% by weight of a pyrotechnic composition comprising an inorganic oxidizer and metal or metal oxide powders; and 1-50% by weight of a plasticizer composition.

2 . The pyrotechnic material of claim 1 wherein the plasticizer composition comprises polyisobutylene.

3 . The pyrotechnic material of claim 1 wherein the plasticizer composition further comprises a fluoropolymer.

4 . The pyrotechnic material of claim 2 wherein the plasticizer composition further comprises a fluoropolymer.

5 . The pyrotechnic material of claim 1 further comprising a biocide precursor.

6 . The pyrotechnic material of claim 2 further comprising a biocide precursor.

7 . The pyrotechnic material of claim 3 further comprising a biocide precursor.

8 . The pyrotechnic material of claim 4 further comprising a biocide precursor.

9 . The pyrotechnic material of claim 1 further comprises about 1-2% by weight of a processed oil.

10 . The pyrotechnic material of claim 2 further comprises about 1-2% by weight of a processed oil.

11 . The pyrotechnic material of claim 5 further comprises about 1-2% by weight of a processed oil.

12 . The pyrotechnic material of claim 1 comprising a combination of:
70-99% by weight of a pyrotechnic composition comprising an inorganic oxidizer and metal or metal oxide powders; and
1-30% by weight of a plasticizer composition.

13 . The pyrotechnic material of claim 2 comprising a combination of:
70-99% by weight of a pyrotechnic composition comprising an inorganic oxidizer and metal or metal oxide powders; and
1-30% by weight of a plasticizer composition.

14 . The pyrotechnic material of claim 3 comprising a combination of:
70-99% by weight of a pyrotechnic composition comprising an inorganic oxidizer and metal or metal oxide powders; and
1-30% by weight of a plasticizer composition.

15 . The pyrotechnic material of claim 5 comprising a combination of:
70-99% by weight of a pyrotechnic composition comprising an inorganic oxidizer and metal or metal oxide powders; and
1-30% by weight of a plasticizer composition.

16 . A method of destroying a hazardous material in situ comprising the steps of:
identifying a hazardous threat material at a location; providing a sheet or block of a pyrotechnic material comprising a combination of: 50-99% by weight of a pyrotechnic composition comprising an inorganic oxidizer and metal or metal oxide powders; and 1-50% by weight of a plasticizer composition; selecting an appropriately sized portion of the pyrotechnic material from the sheet or block; forming the portioned pyrotechnic material into a predetermined shape to cover the hazardous material in situ; igniting the portioned pyrotechnic material to destroy the hazardous material.

17 . The method of claim 16 wherein said plasticizer composition comprises polyisobutylene.

18 . The pyrotechnic material of claim 17 wherein the plasticizer composition further comprises a fluoropolymer.

19 . The pyrotechnic material of claim 16 further comprising a biocide precursor.

20 . The pyrotechnic material of claim 17 further comprising a biocide precursor.

Assignees

• Univ Of Rhode Island Board Of Trustees

Inventors

• Oxley Jimmie
• Smith James L
• Busby Taylor
• Kominia Athina

Classifications

• C06B45/10 Primary

  the organic component containing a resin · CPC title

• A62D2101/02

  Chemical warfare substances, e.g. cholinesterase inhibitors · CPC title

• A62D2203/00

  Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances · CPC title

• A62D2101/06

  Explosives, propellants or pyrotechnics, e.g. rocket fuel or napalm · CPC title

• A62D3/38 Primary

  by oxidation; by combustion · CPC title