3D printed fluoropolymer-based energetic compositions

Patent metadata

Field	Value
Publication number	US-11027484-B2
Application number	US-201815920509-A
Country	US
Kind code	B2
Filing date	Mar 14, 2018
Priority date	Mar 21, 2017
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

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.

First claim

The invention claimed is:

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).

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

Assignees

• Purdue Research Foundation

Inventors

• Rhoads Jeffrey Frederick
• Chiu George Tsu-Chih
• Gunduz Ibrahim Emre
• Fleck Trevor John
• Murray Allison Kelly
• Son Steven Forrest

Classifications

• B33Y70/10

  Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials · CPC title

• C09D11/037

  characterised by the pigment · CPC title

• B29K2509/02

  Ceramics · CPC title

• B29K2027/16

  PVDF, i.e. polyvinylidene fluoride · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title