US2024002310A1PendingUtilityA1

Method and system for unzipping polymers for enhanced energy release

67
Assignee: UNIV CALIFORNIAPriority: Jun 30, 2022Filed: Jun 28, 2023Published: Jan 4, 2024
Est. expiryJun 30, 2042(~15.9 yrs left)· nominal 20-yr term from priority
Inventors:Haiyang WangMichael R. ZachariahJeffrey S. MooreMayank Garg
C06B 33/02C06B 47/02C06B 23/00
67
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Claims

Abstract

An energetic composition and a method of unzipping polymer binders are disclosed, which includes localizing a heat feedback just near the reaction front by unzipping polymer binders employed to a nanothermite. The energetic composition includes an unzipping polymer binder employed to high load fuel and oxidizer particles.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An energetic composition, comprising:
 an unzipping polymer binder employed to high load fuel and oxidizer particles.   
     
     
         2 . The energetic composition of  claim 1 , wherein the unzipping polymer is a polycarbonate, a poly(phthalaldehyde), a poly(vinyl ether sulfone), or a combination of unzipping polymers. 
     
     
         3 . The energetic composition of  claim 1 , wherein the unzipping polymer is polypropylene carbonate (PPC) or cyclic poly(phthalaldehyde) (cPPA). 
     
     
         4 . The energetic composition of  claim 3 , wherein the fuel and oxidizer particles are Al and CuO nanoparticles (NPs). 
     
     
         5 . The energetic composition of  claim 4 , wherein the unzipping polymer is 10 wt % PPC or cPPA, and the high load fuel and oxidizer particles is 90 wt % Al and CuO nanoparticles (NPs). 
     
     
         6 . The energetic composition of  claim 5 , wherein the 10 wt % PPC or cPPA is loaded with the 90 wt % Al and CuO nanoparticles (NPs) by direct ink-writing, and wherein the PPC or cPPA decomposes through sequential monomer depolymerization. 
     
     
         7 . The energetic composition of  claim 1 , wherein the unzipping polymer binding employed to the high load fuel and oxidizer particles is employed in a propellant or a munition. 
     
     
         8 . The energetic composition of  claim 1 , wherein the high load fuel and oxidizer particles are nanothermites. 
     
     
         9 . The energetic composition of  claim 1 , wherein the high load fuel and oxidizer particles include aluminized composites. 
     
     
         10 . A method of unzipping polymer binders comprising:
 localizing a heat feedback just near the reaction front by unzipping polymer binders employed to a nanothermite.   
     
     
         11 . The method of  claim 10 , wherein the unzipping polymer is a polycarbonate, a poly(phthalaldehyde), a poly(vinyl ether sulfone), or a combination of unzipping polymers. 
     
     
         12 . The method of  claim 10 , wherein the unzipping polymer is polypropylene carbonate (PPC) or cyclic poly(phthalaldehyde) (cPPA). 
     
     
         13 . The method of  claim 12 , further comprising:
 decomposing the polypropylene carbonate (PPC) or the cyclic poly(phthalaldehyde) (cPPA) through sequential monomer depolymerization.   
     
     
         14 . The method of  claim 12 , further comprising:
 loading the polypropylene carbonate (PPC) or the cyclic poly(phthalaldehyde) (cPPA) with the nanothermite by direct ink-writing to form an energetic composition.   
     
     
         15 . The method of  claim 14 , wherein nanothermite comprises Al and CuO nanoparticles (NPs). 
     
     
         16 . The method of  claim 14 , further comprising:
 employing the energetic composite in a propellant or a munition.   
     
     
         17 . The method of  claim 10 , wherein the nanothermite includes Al and CuO nanoparticles (NPs).

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