Multifunctional reactive inks, methods of use and manufacture thereof

Patent metadata

Field	Value
Publication number	US-2022195220-A1
Application number	US-202217691006-A
Country	US
Kind code	A1
Filing date	Mar 9, 2022
Priority date	Oct 8, 2013
Publication date	Jun 23, 2022
Grant date	—

Abstract

In one embodiment, a method includes 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, wherein the particles are characterized by a core-shell configuration, wherein the core-shell configuration includes a core formed from a first material and a shell formed from a second material, wherein the first material and the second material form a combustible composition and/or a reactive binary composition that is configured to complete a self-propagating reaction and/or a self-sustaining reaction upon initiation thereof. Corresponding materials, and methods of using such materials, are also disclosed.

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, wherein the particles are characterized by a core-shell configuration, wherein the core-shell configuration includes a core formed from a first material and a shell formed from a second material, wherein the first material and the second material form a combustible composition and/or a reactive binary composition that is configured to complete a self-propagating reaction and/or a self-sustaining reaction upon initiation thereof.

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

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

4 . 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.

5 . 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.

6 . The method as recited in claim 1 , wherein the stabilizing agent includes at least one polymer, and 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.

7 . 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.

8 . A method, comprising:
depositing a composition of matter on a substrate, the composition of matter comprising:
a plurality of particles;
a solvent system; and
one or more stabilizing agents;
wherein the particles are characterized by a core-shell configuration; wherein the core-shell configuration includes a core formed from a first material and a shell formed from a second material; and wherein the first material and the second material form a combustible composition and/or a reactive binary composition that is configured to complete a self-propagating reaction and/or a self-sustaining reaction upon initiation thereof.

9 . The method as recited in claim 8 , wherein the self-propagating reaction and/or the self-sustaining reaction renders at least surface(s) of the substrate onto which the composition of matter is deposited conductive.

10 . The method as recited in claim 8 , wherein the self-propagating reaction and/or the self-sustaining reaction comprises a thermite reaction and/or an intermetallic reaction.

11 . The method as recited in claim 8 , further comprising initiating the self-propagating reaction and/or the self-sustaining reaction.

12 . The method as recited in claim 8 , wherein the composition of matter is deposited as a layer, the method further comprising: depositing one or more additional layers of the composition of matter.

13 . The method as recited in claim 12 , further comprising initiating the self-propagating reaction and/or the self-sustaining reaction in each layer subsequent to depositing the layer of the composition of matter and prior to depositing a subsequent one of the one or more additional layers of the composition of matter.

14 . The method as recited in claim 8 , further comprising depositing one or more additional layers of the composition of matter and one or more layers of a second composition of matter to form a structure comprising alternating layers of the composition of matter and the second composition of matter, and wherein the layers of the second composition of matter comprise a non-energetic material.

15 . The method as recited in claim 14 , further comprising initiating the self-propagating reaction and/or the self-sustaining reaction in each layer of the composition of matter;
wherein each self-propagating and/or self-sustaining reaction generates heat, and wherein the heat generated by each self-propagating reaction and/or each self-sustaining reaction at least partially melts at least one adjacent layer comprising the second composition of matter.

16 . A composition of matter, comprising:
a plurality of particles; a solvent system; and one or more stabilizing agents; wherein the particles are characterized by a core-shell configuration; wherein the core-shell configuration includes a core formed from a first material and a shell formed from a second material; and wherein the first material and the second material form a combustible composition and/or a reactive binary composition that is configured to complete a self-propagating reaction and/or a self-sustaining reaction upon initiation thereof.

17 . The composition of matter as recited in claim 16 , wherein the particles are characterized by an average diameter in a range from about 0.01 microns to about 100 microns.

18 . The composition of matter as recited in claim 16 , wherein the one or more stabilizing agents include 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.

19 . The composition of matter as recited in claim 16 , wherein the one or more stabilizing agents includes at least one polymer, and 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.

20 . The composition of matter as recited in claim 16 , further comprising at least one additional component selected from the group consisting of: a humectant, a graded volatility solvent system, a brazing agent, a gelation agent, and an adhesion agent.

Assignees

• L Livermore Nat Security Llc

Inventors

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

Classifications

• C09D11/03

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

• B29C64/118

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

• C09D11/02 Primary

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

• Y10T428/24893

  including particulate material · CPC title

• B29C64/106

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