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Inorganic metal oxide/organic polymer nanocomposites and method thereof

 Alexander E. Gash et al
Abstract Abstract | Drawing | Description | Claims

Abstract
A synthetic method for preparation of hybrid inorganic/organic energetic nanocomposites is disclosed herein. The method employs the use of stable metal in organic salts and organic solvents as well as an organic polymer with good solubility in the solvent system to produce novel nanocomposite energetic materials. In addition, fuel metal powders (particularly those that are oxophilic) can be incorporated into composition. This material has been characterized by thermal methods, energy-filtered transmission electron microscopy (EFTEM), N2 adsoprtion/desorption methods, and Fourier-Transform (FT-IR) spectroscopy. According to these characterization methods the organic polymer phase fills the nanopores of the material, providing superb mixing of the component phases in the energetic nanocomposite.

Patent number: 6818081
Filing date: Jul 23, 2003
Issue date: Nov 16, 2004
Inventors: Alexander E. Gash, Joe H. Satcher, Randy Simpson
Assignee: The Regents of the University of California
Primary Examiner: David W. Wu
Secondary Examiner: Henry S. Hu
Attorneys: Ann M. Lee, Alan H. Thompson, Eddie E. Scott
Application number10/626,098

U.S. Classification
149/199.2; 524/431; 524/80

International Classification
C06B 4510

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Citations

Patent NumberTitleIssue date
5629380Epoxy adhesive composition comprising a calcium salt and mannich baseMay 13, 1997
5698483Process for preparing nanosized powderDec 16, 1997
5726247Fluoropolymer nanocompositesMar 10, 1998
5788950Method for the synthesis of mixed metal oxide powdersAug 4, 1998
5840796Polymer nanocompositesNov 24, 1998
5962608Polymers made with metal oxide solsOct 5, 1999
6183852Refractory fibrous ceramic insulation and process of making sameFeb 6, 2001
6331509Corrosion resistant lubricants, greases, and gelsDec 18, 2001

Claims

What is claimed is:

1. A nanocomposite produced by the process comprising:

dissolving a metal ionsalt in a solvent system to form a metal ion salt solution, wherein said solvent system is common to said metal ion salt and a polymer;
adding an epoxide to said metal ion salt solution to form an epoxide-containing metal ion salt solution;
dissolving said polymer in said solvent system to form a polymer solution;
adding a portion of the polymer solution to the epoxide-containing metal ion salt solution to form a polymer-containing, epoxide-containing metal ion salt solution; and
stirring said a polymer-containing, epoxide-containing metal ion salt solution until said solution gels.

2. The nanocomposite produced by the process recited in claim 1, further comprising:

adding a fuel metal powder to said polymer-containing, epoxide-containing metal ion salt solution while stirring, wherein said addition of the fuel metal powder occurs before said polymer-containing, epoxide-containing metal ion salt solution gels.

3. The nanocomposite recited in claim 1, wherein said metal ion salt is Fe2O3.

4. The nanocomposite produced by the process recited in claim 1, wherein said polymer is a fluoroelastomer.

5. The nanocomposite produced by the process recited in claim 2, wherein said fluoroelastomer is vinylidene fluoride-hexafluoropropylene copolymer.

6. The nanocomposite produced by the process recited in claim 4, wherein said flouroelastomer is soluble in said solvent system.

7. The nanocomposite produced by the process recited in claim 1, wherein said solvent system is a mixture of ethanol and acetone.

8. The nanocomposite produced by the process recited in claim 2, wherein said fuel metal powder is Al, Mg, B, Ti, Zr or mixtures thereof.

9. The nanocomposite produced by the process recited in claim 2, wherein said fuel metal powder is ultra fine grain aluminum.

10. A nanocomposite comprising:

an inorganic sol-gel polymer phase comprising at least one metal-oxide and at least one epoxide; and
an interpenetrating organic polymer phase entwined in said inorganic sol-gel phase.

11. The nanocomposite recited in claim 10, wherein said inorganic sol-gel polymer phase further comprises:

A fuel metal powder.

12. The nanocomposite recited in claim 10, wherein said metal oxide is Fe2O3.

13. The nanocomposite recited in claim 10, wherein said polymer is a fluoroelastomer.

14. The nanocomposite recited in claim 13, wherein said fluoroelastomer is vinylidene fluoride-hexafluoropropylene copolymer.

15. The nanocomposite recited in claim 11, wherein said fuel metal powder is Al, Mg, B, Ti, Zr or mixtures thereof.

16. The nanocomposite recited in claim 11, wherein said fuel metal powder is ultra fine grain aluminum.

Drawings