Inkjet based solid particle powder bed crosslinking

Patent metadata

Field	Value
Publication number	US-11701822-B2
Application number	US-202117322534-A
Country	US
Kind code	B2
Filing date	May 17, 2021
Priority date	May 17, 2021
Publication date	Jul 18, 2023
Grant date	Jul 18, 2023

Abstract

A method of three-dimensional manufacturing including depositing a layer of powder in a powder bed, the layer comprising particles of at least a first component of a two-component reactive material, dispensing a first solution containing at least one of a solvent and a second component of the two-component reactive material the solvent selected to cause the two components to form one or more cross-linked regions of a three-dimensional object, iterating the depositing and dispensing to form subsequent layers of the three-dimensional object until the object is formed, and removing any unwanted particles from the object. A three-dimensional manufacturing system has a powder bed to hold layers of particles, and one or more print heads positioned to dispense liquid onto the powder bed to cause the particles for form one or more cross-linked regions in layers of a solid object.

First claim

What is claimed is:

1. A method of three-dimensional manufacturing comprising:
depositing a layer of powder in a powder bed, the layer comprising particles of at least a first component and a second component of a two-component reactive material;
dispensing a first solution containing a solvent selected to cause the two components to form one or more cross-linked regions of a three-dimensional object;
iterating the depositing and dispensing to form subsequent layers of the three-dimensional object until the object is formed; and
removing any unwanted particles from the object.

2. The method as claimed in claim 1 , wherein depositing the layer of powder comprises depositing particles of the first component and particles of the second component of the two-component reactive material and the solution contains the solvent.

3. The method as claimed in claim 1 , wherein depositing the layer of powder comprises depositing particles that have both the first component and second component in each particle.

4. The method as claimed in claim 1 , wherein dispensing the solution comprises dispensing a solution that contains an initiator.

5. The method as claimed in claim 1 , further comprising heating the solution prior to dispensing.

6. The method as claimed in claim 1 , further comprising heating the three-dimensional object after completion.

7. The method as claimed in claim 1 , wherein the first component comprises amine and the second component comprises epoxy.

8. The method as claimed in claim 1 , wherein the first component comprises epoxy and the second component comprises amine.

9. The method as claimed in claim 1 , wherein the two component reactive material is one of: amine and epoxy, silicone part A and part B, nylon part A and part B, and thermoplastic polyurethane part A and part B.

10. The method as claimed in claim 1 , wherein the particles have functionalized microparticles.

11. The method as claimed in claim 10 , wherein the particles comprise solid epoxy and the microparticles comprise functionalized epoxy-reacted fluorographene.

12. The method as claimed in claim 10 , wherein the particles comprise solid amine and the microparticles comprise functionalized amine-reacted fluorographene.

13. The method as claimed in claim 10 , wherein the functionalized particles is selected from a group consisting of graphene, carbon particles, carbon nanotube, clay, alumina, silica, titania, silicon carbide, boron nitride.

14. The method as claimed in claim 1 , further comprising dispensing at least a second solution containing at least a third component after dispensing the first solution.

15. The method as claimed in claim 14 , wherein dispensing the at least a second solution comprises dispensing the second solution onto only selected regions of the one or more cross-linked regions.

16. A method of three-dimensional manufacturing comprising:
depositing a layer of powder in a powder bed, the layer comprising particles of at least a first component of a two-component reactive material, the particles having functionalized microparticles and the particles and microparticles comprise one of either solid epoxy particles and microparticles of functionalized epoxy-reacted fluorographene, or solid amine particles and microparticles of functionalized amine-reacted fluorographene;
dispensing a first solution containing a solvent and a second component of the two-component reactive material the solvent selected to cause the two components to form one or more cross-linked regions of a three-dimensional object;
iterating the depositing and dispensing to form subsequent layers of the three-dimensional object until the object is formed; and
removing any unwanted particles from the object.

17. A method of three-dimensional manufacturing comprising:
depositing a layer of powder in a powder bed, the layer comprising particles of a first component of a two-component reactive material, the particles having functionalized microparticles and the particles are selected from a group consisting of graphene, carbon particles, clay, alumina, silica, titania, silicon carbide, and boron nitride;
dispensing a first solution containing a solvent and a second component of the two-component reactive material the solvent selected to cause the two components to form one or more cross-linked regions of a three-dimensional object;
iterating the depositing and dispensing to form subsequent layers of the three-dimensional object until the object is formed; and
removing any unwanted particles from the object.

Assignees

• Palo Alto Res Ct Inc

Inventors

• Benedict Michael
• Wei Junhua
• Iftime Gabriel

Classifications

• B29C64/165 Primary

  using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B29C64/295

  Heating elements · CPC title

• Y02P10/25

  Process efficiency · CPC title