# US 11,027,484 B2 · 3D printed fluoropolymer-based energetic compositions

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- Number: US 11,027,484 B2
- Document ID: US11027484B2
- Status: Granted
- Kind: B2
- Application number: 15/920,509
- Filed: 2018-03-14
- Published: 2019-01-31
- Granted: 2021-06-08
- Earliest claimed: 2017-03-21
- Assignees: Purdue Research Foundation
- Applicants: Purdue Research Foundation
- Inventors: Jeffrey Frederick Rhoads; George Tsu-Chih Chiu; Ibrahim Emre Gunduz; Trevor John Fleck; Allison Kelly Murray; Steven Forrest Son
- Web page: https://patentgrep.com/patent/US11027484B2

## CPC

- B29C 64/118: using filamentary material being melted, e.g. fused deposition modelling [FDM]
- B33Y 10/00: Processes of additive manufacturing
- B33Y 70/10: Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
- B33Y 80/00: Products made by additive manufacturing
- C06B 21/0033: {Shaping the mixture}
- C06B 27/00: Compositions containing a metal, boron, silicon, selenium or tellurium or mixtures, intercompounds or hydrides thereof, and hydrocarbons or halogenated hydrocarbons
- C09D 11/037: characterised by the pigment
- C09D 11/106: containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- B29K 2027/16: {PVDF, i.e. polyvinylidene fluoride}
- B29K 2509/02: Ceramics
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- C06B: EXPLOSIVES OR THERMIC COMPOSITIONS (blasting F42D); MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES (compounds in general C01, C07 or C08; {demolition agents based on cementitious or like materials C04B41/0009})
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

## Abstract

Three-dimensional (3D) printed fluoropolymer-based energetic compositions are made using 3D printing methods. The 3D printed fluoropolymer-based energetic compositions comprise a fluoropolymer and a reactive metal or metal oxide. The total weight percentage of the fluoropolymer and the reactive metal or metal oxide is 70-100% of the 3D printed fluoropolymer-based energetic composition, and the weight percentage of the reactive metal or metal oxide is 5-85 wt % of the total weight of the 3D printed fluoropolymer-based energetic material. The 3D printed fluoropolymer-based energetic material has a thickness of at least 200 μm.

## Claims

### Claim 1

A 3D printed polyvinylidene fluoride (PVDF)-based energetic material comprising a plurality of layers that consist essentially of polyvinylidene fluoride (PVDF) and aluminum,
wherein one or more layer of said a plurality of layers has a thickness of at least 200 μm,
wherein the 3D printed polyvinylidene fluoride (PVDF)-based energetic material is substantially free of any other polymer and is prepared by a 3D printing method, wherein the method comprises:
a) preparing a pellet that consist essentially of polyvinylidene fluoride (PVDF) and aluminum;
b) preparing a filament by adding the pellet to a filament extruder; and
c) 3D printing the filament to provide the 3D printed polyvinylidene fluoride (PVDF)-based energetic material at a temperature below the onset to reaction temperature of polyvinylidene fluoride (PVDF).

### Claim 2 (depends on 1)

The 3D printed polyvinylidene fluoride (PVDF)-based energetic material of claim 1, wherein the material is free of acrylonitrile butadiene styrene (ABS).