Multifunctional reactive inks, methods of use and manufacture thereof

Patent metadata

Field	Value
Publication number	US-2020023571-A1
Application number	US-201916452301-A
Country	US
Kind code	A1
Filing date	Jun 25, 2019
Priority date	Oct 8, 2013
Publication date	Jan 23, 2020
Grant date	—

Abstract

In one embodiment, a method includes dispersing a plurality of particles in solution to form a dispersion and adding a stabilizing agent to the dispersion in an amount sufficient to cause the dispersion to exhibit one or more predetermined rheological properties. The particles in the dispersion are configured to complete a self-propagating and/or self-sustaining reaction upon initiation thereof. In another embodiment, a method includes depositing a material on a substrate. The material includes: a plurality of particles configured to complete a self-propagating and/or self-sustaining reaction upon initiation thereof, a solvent system, and one or more stabilizing agents.

First claim

What is claimed is:

1 . A method, comprising:
dispersing a plurality of particles in a solution to form a dispersion; and adding a stabilizing agent to the dispersion in an amount sufficient to cause the dispersion to exhibit one or more predetermined rheological properties; and wherein the particles in the dispersion are configured to complete a self-propagating and/or self-sustaining reaction upon initiation thereof.

2 . The method as recited in claim 1 , wherein the particles comprise a binary or higher order reactive system.

3 . The method as recited in claim 1 , wherein the particles comprise from about 30 vol % to about 80 vol % of the dispersion.

4 . The method as recited in claim 1 , wherein the dispersion comprises the particles dispersed throughout a liquid metal matrix.

5 . The method as recited in claim 1 , wherein the particles are characterized by a core-shell configuration.

6 . The method as recited in claim 1 , wherein the particles are characterized by an average diameter in a range from about 0.01 microns to about 100 microns.

7 . The method as recited in claim 1 , wherein the stabilizing agent includes one or more components selected from the group consisting of: at least one polymer, at least one surfactant, at least one acid, at least one base, at least one electrolyte and/or at least one polyelectrolyte, and at least one salt.

8 . The method as recited in claim 7 , wherein the at least one polymer is selected from the group consisting of: polyvinylpyrridole (PVP), polyethylene glycol (PEG), polyacrylic acid, sodium polyacrylate, polyethyleneimine, and ammonium polymethacrylate.

9 . The method as recited in claim 1 , wherein the one or more predetermined rheological properties are selected from the group consisting of: viscosity, shear, storage, loss modulus, density, flow properties, and volume fraction of the particles.

10 . The method as recited in claim 1 , wherein the dispersing comprises one or more operations selected from the group consisting of: shaking, stirring, vortexing, and sonicating.

11 . The method as recited in claim 1 , further comprising heating the dispersion to remove a solvent therefrom without initiating any chemical reaction between the plurality of particles.

12 . The method as recited in claim 1 , further comprising adding at least one additional component to the dispersion, wherein the at least one additional component is selected from the group consisting of: a humectant, a graded volatility solvent system, a brazing agent, a gelation agent, and an adhesion agent.

13 . A method, comprising:
depositing a material on a substrate, the material comprising:
a plurality of particles configured to complete a self-propagating and/or self-sustaining reaction upon initiation thereof;
a solvent system; and
one or more stabilizing agents.

14 . The method as recited in claim 13 , wherein the self-propagating and/or self-sustaining reaction renders at least surface(s) of the substrate onto which the material is deposited conductive.

15 . The method as recited in claim 13 , wherein the self-propagating and/or self-sustaining reaction comprises a thermite and/or an intermetallic reaction.

16 . The method as recited in claim 13 , further comprising initiating the self-propagating and/or self-sustaining reaction.

17 . The method as recited in claim 13 , wherein the material is deposited as a layer, the method further comprising: depositing one or more additional layers of the material.

18 . The method as recited in claim 17 , further comprising initiating the self-propagating and/or self-sustaining reaction in each layer subsequent to depositing the layer and prior to depositing a subsequent one of the additional layers.

19 . The method as recited in claim 13 , further comprising depositing one or more additional layers of the material and one or more layers of a second material to form a structure comprising alternating layers of the material and the second material; and wherein the layers of the second material comprise a non-energetic material.

20 . The method as recited in claim 19 , further comprising initiating the self-propagating and/or self-sustaining reaction in each layer of the material;
wherein each self-propagating and/or self-sustaining reaction generates heat, and wherein the heat generated by each self-propagating and/or self-sustaining reaction at least partially melts at least one adjacent layer comprising the second material.

Assignees

• L Livermore Nat Security Llc

Inventors

• Sullivan Kyle
• Densmore John M
• Duoss Eric
• Gash Alexander E
• Kuntz Joshua
• Vericella John

Classifications

• C09D11/02 Primary

  Printing inks (C09D11/30 takes precedence) · CPC title

• B29C64/118

  using filamentary material being melted, e.g. fused deposition modelling [FDM] · CPC title

• C09D11/03

  characterised by features other than the chemical nature of the binder · CPC title

• Y10T428/24893

  including particulate material · CPC title

• B29C64/106 Primary

  using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material · CPC title