3D printing powder compositions and methods of use

Patent metadata

Field	Value
Publication number	US-9388078-B2
Application number	US-201414198180-A
Country	US
Kind code	B2
Filing date	Mar 5, 2014
Priority date	Sep 20, 2011
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

Powder compositions that can be used with traditional 3D printing technology and methods for producing 3D printed building materials that have comparable compressive strength to standard concrete and tensile strength up to 70% greater than standard concrete.

First claim

What is claimed is:

1. A method of producing a product using 3D printing, comprising:
(a) preparing a powder composition comprising:
(i) approximately 0.75 to approximately 2.0 parts by weight of an adhesive material;
(ii) approximately zero to approximately 2.0 parts by weight of an absorbent material; and
(iii) approximately 4.0 to approximately 6.0 parts by weight of a base material;

(b) introducing said composition into a 3D printer and producing a part with successive applications of powder and a binder; and
(c) infiltrating the part with a post-processing material selected from the group of materials consisting of: resin, epoxy resin, epoxy resin 7132, acrylic resin, silicone, and fiber reinforced plastic (frp).

2. The method as recited in claim 1 , further comprising finishing the post-processed part with a finish type selected from the group consisting of a resin finish, a sand blasted finish, a resin dye finish, and an integral color finish.

3. The method as recited in claim 1 , wherein the base material is selected from the group of materials consisting of: expansion cement, plaster of paris, fly-ash, patching cement, rapid setting cements, portland cement and hydraulic cement.

4. The method as recited in claim 1 , wherein the adhesive material is selected from the group of materials consisting of: powdered sugar, poly-vinyl alcohol (pva) adhesive, polyureic formaldehyde adhesive, wheat paste, methyl cellulose, powdered wood glue and water putty.

5. The method as recited in claim 1 , wherein the absorbent material is selected from the group of materials consisting of: maltodextrin, sodium silicate or a deflocculant.

6. The method as recited in claim 1 , wherein the powder composition comprises:
(a) approximately 1.25 parts by weight powdered sugar;
(b) approximately 1.25 parts by weight maltodextrin; and
(c) approximately 5 parts by weight expansion cement.

7. The method as recited in claim 1 , wherein the binder material is selected from the group of materials consisting of: rice wine, sake, vodka, water, alcohol, isopropyl alcohol, a humectant, and poly vinyl alcohol (pva).

8. A powder composition for 3D printing, comprising:
(a) approximately 0.75 to approximately 2.0 parts by weight of an adhesive material;
(b) approximately zero to approximately 2.0 parts by weight of an absorbent material; and
(c) approximately 4.0 to approximately 6.0 parts by weight of a base material.

9. The composition as recited in claim 8 , wherein the adhesive material is selected from the group of materials consisting of: powdered sugar, poly-vinyl alcohol (pva) adhesive, polyureic formaldehyde adhesive, wheat paste, methyl cellulose, powdered wood glue and water putty.

10. The composition as recited in claim 8 , wherein the absorbent material is selected from the group of materials consisting of: maltodextrin, sodium silicate or a deflocculant.

11. The composition as recited in claim 8 , wherein the base material is selected from the group of materials consisting of: expansion cement, plaster of paris, fly-ash, patching cement, Cement-All™, rapid setting cements, portland cement, and hydraulic cement.

12. The composition as recited in claim 8 , comprising:
approximately 1.25 parts by weight powdered sugar adhesive;
approximately 1.25 parts by weight maltodextrin absorbent; and
approximately 5 parts by weight expansion cement base.

13. The composition as recited in claim 8 , comprising:
approximately 1.25 parts by weight powdered sugar adhesive;
approximately 1.25 parts by weight maltodextrin absorbent; and
approximately 5 parts by weight of a 98% calcium sulfate 2% Portland cement base.

14. The composition as recited in claim 8 , further comprising:
a reinforcing additive component.

15. The composition as recited in claim 14 , wherein the additive component material is selected from the group of materials consisting of: fiber mesh, fiber mesh concrete reinforcement fibers, fly-ash, poly vinyl alcohol (pva) fiber, a standard tensile modulus carbon fiber, a intermediate tensile modulus carbon fiber, a high tensile modulus carbon fiber, and an aggregate.

16. A powder composition for 3D printing, comprising:
(a) approximately 0.75 to approximately 2.0 parts by weight of an adhesive material;
(b) approximately 1.0 part by weight of an reinforcing additive material; and
(c) approximately 4.0 to approximately 6.0 parts by weight of a base material.

17. The composition as recited in claim 16 , wherein the additive material comprises fiber mesh concrete reinforcement fibers capable of being semi-hydrated by a rice wine binder.

18. The composition as recited in claim 16 , wherein the additive material is selected from the group of materials consisting of: fiber mesh, fly-ash, flow control, poly vinyl alcohol (pva) fiber, a standard tensile modulus carbon fiber, a intermediate tensile modulus carbon fiber, a high tensile modulus carbon fiber, and an aggregate.

19. The composition as recited in claim 16 , wherein the base material is selected from the group of materials consisting of: expansion cement, plaster of paris, fly-ash, patching cement, rapid setting cements, portland cement, and hydraulic cement.

20. The composition as recited in claim 16 , wherein the adhesive material is selected from the group of materials consisting of: powdered sugar, poly-vinyl alcohol (pva) adhesive, polyureic formaldehyde adhesive, wheat paste, methyl cellulose, powdered wood glue and water putty.

Assignees

• Univ California

Inventors

• Rael Ronald

Classifications

• B29C67/0081

  Operations & Transport · mapped topic

• C04B24/383 Primary

  Cellulose or derivatives thereof · CPC title

• C04B24/2623

  Polyvinylalcohols; Polyvinylacetates · CPC title

• C04B14/005

  Inorganic fillers with a shape other than granular or fibrous (carbon nanotubes C04B14/026) · CPC title

• B28B1/001

  Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material (selective deposition modelling of metallic powder B22F10/00; rapid manufacturing of 3D objects in general and in particular of plastics B29C64/00) · CPC title