Method to manufacture polymer composite materials with nano-fillers for use in additive manufacturing to improve material properties

Patent metadata

Field	Value
Publication number	US-9908978-B2
Application number	US-201514682067-A
Country	US
Kind code	B2
Filing date	Apr 8, 2015
Priority date	Apr 8, 2015
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

Methods for producing 3D printing composite polymer materials for use in additive manufacturing processes are provided. The methods result in enhancing the material properties of the printing material by providing a uniform and smooth surface finish of the printing material and the nozzle extrudate for additive manufacturing processes, such as Fused Filament Fabrication. The method includes implementing impregnation techniques for combining carbon nanotubes or other nano-fillers, a polymer resin and a fiber material to produce a polymer material that can be processed into a printing material. Further, the method may include combining the carbon nanotubes or other nano-fillers and the polymer resin to form a masterbatch that may be further combined with the fiber material through an extrusion process. The method results in a printing material with enhanced material properties and smooth surface finish for the printing material and resulting nozzle extrudate for Fused Filament Fabrication.

First claim

We claim:

1. A method for producing a filament printing material for use in additive manufacturing processes, the method comprising:
(a) combining a nano-filler into a polymer resin to form a masterbatch;
(b) combining a fiber-filled polymer material with the masterbatch by extrusion to produce the filament printing material;
wherein the polymer resin comprises a first polymer resin material combined with a second polymer resin material, wherein the first polymer resin material and the second polymer resin material are differently selected from the group consisting of a thermosetting polymer resin, polyaryletherketone (PAEK), polyethertherketone (PEEK), polyetherketoneketone (PEKK), polyethylene (PE), polyetherimide (PEI), polyethersulfone (PES), polysulfone (PSU), polyphenylsulfone (PPSU), polyphenylene oxides (PPOs), acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), polyglycolic acid (PGA), polyamide-imide (PAI), polystyrene (PS), polyamide (PA), polybutylene terephthalate (PBT), poly(p-phenylene sulfide) (PPS), polyethersulfone (PESU), polyphenylene ether, and polycarbonate (PC).

2. The method of claim 1 , wherein the extrusion is performed using a twin extruder under conditions to maximize dispersion of the nano-fillers and fiber material in the polymer resin.

3. The method of claim 1 , wherein the nano-fillers include carbon nanotubes, graphene nanoplatelets, graphite powder, PTFE powder, or a combination thereof.

4. The method of claim 1 , wherein (a) or (b) includes compounding, melt mixing, spinning, solution processing, or in-situ polymerization.

5. The method of claim 1 , wherein the fiber-filled polymer material comprises carbon fibers, glass fibers, aramid fibers, or a mixture of carbon, aramid, and glass fibers, as fillers.

6. A method for producing a filament printing material for use in additive manufacturing processes, the method comprising:
combining a nano-filler with a fiber material together into a polymer resin to form a filament printing material;
wherein the polymer resin comprises a first polymer resin material combined with a second polymer resin material, wherein the first polymer resin material and the second polymer resin material are differently selected from the group consisting of a thermosetting polymer resin, polyaryletherketone (PAEK), polyethertherketone (PEEK), polyetherketoneketone (PEKK), polyethylene (PE), polyetherimide (PEI), polyethersulfone (PES), polysulfone (PSU), polyphenylsulfone (PPSU), polyphenylene oxides (PPOs), acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), polyglycolic acid (PGA), polyamide-imide (PAI), polystyrene (PS), polyamide (PA), polybutylene terephthalate (PBT), poly(p-phenylene sulfide) (PPS), polyethersulfone (PESU), polyphenylene ether, and polycarbonate (PC).

7. The method of claim 6 , further comprising extruding the printing material to produce the filament printing material.

8. The method of claim 6 , wherein the combining of the nano-fillers, the fiber material and the polymer resin maximizes wettability and dispersion of the nano-fillers and the fiber material in the filament printing material.

9. The method of claim 6 , wherein the nano-fillers include carbon nanotubes, graphene nanoplatelets, graphite powder, PTFE powder, or a combination thereof.

10. The method of claim 6 , further comprising compounding, melt mixing, spinning, solution processing, or in-situ polymerization of the nano-filler with the fiber material together into the polymer resin.

11. The method of claim 6 , wherein the fiber material comprises carbon fibers, aramid fibers, glass fibers, or a mixture of carbon, aramid, and glass fibers.

12. A method for producing a filament printing material for use in additive manufacturing processes, the method comprising:
coating, grafting, or growing a nano-filler evenly on a surface of a fiber material, modifying the fiber material; and
combining of the modified fiber material within a polymer resin to form the filament printing material.

13. The method of claim 12 , wherein the combining of the modified fiber material and the polymer resin maximizes wettability and dispersion of the nano-filler and the fiber material in the filament printing material.

14. The method of claim 12 , wherein the nano-filler includes carbon nanotubes, graphene nanoplatelets, graphite powder, PTFE powder, or a combination thereof.

15. The method of claim 12 , wherein the combining of the modified fiber material within a polymer resin includes compounding, melt mixing, spinning, solution processing, or in-situ polymerization.

16. The method of claim 12 , wherein the fiber material comprises carbon fibers, aramid fibers, glass fibers, or a mixture of carbon, aramid and glass fibers.

17. The method of claim 12 , wherein the polymer resin is a thermosetting polymer resin.

18. The method of claim 7 , wherein the extruder is a twin extruder.

19. The method of claim 1 , wherein the first polymer resin material and the second polymer resin material are combined at a ratio greater than or equal to 3:2, wherein the first polymer resin material is different than the second polymer resin material.

20. The method of claim 6 , wherein the first polymer resin material and the second polymer resin material are combined at a ratio greater than or equal to 3:2, wherein the first polymer resin material is different than the second polymer resin material.

21. The method of claim 1 , wherein the first polymer resin material and the second polymer resin material are combined at a ratio from about 3:2 to 9:1, wherein the first polymer resin material is different than the second polymer resin material.

22. The method of claim 6 , wherein the first polymer resin material and the second polymer resin material are combined at a ratio from about 3:2 to 9:1, wherein the first polymer resin material is different than the second polymer resin material.

23. The method of claim 1 , wherein the masterbatch comprises at least about 5% nano-filler.

24. The method of claim 9 , wherein the polymer resin is selected from the group consisting of polyaryletherketone (PAEK), polyethertherketone (PEEK), polyetherketoneketone (PEKK), polyethylene (PE), polyetherimide (PEI), polyethersulfone (PES), polysulfone (PSU), polyphenylsulfone (PPSU), polyphenylene oxides (PPOs), acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), polyglycolic acid (PGA), polyamide-imide (PAI), polystyrene (PS), polyamide (PA), polybutylene terephthalate (PBT), poly(p-phenylene sulfide) (PPS), polyethersulfone (PESU), polyphenylene ether, and polycarbonate (PC).

Assignees

• Arevo Inc

Inventors

• Reese Riley
• Bheda Hemant

Classifications

• C08J2381/06

  Polysulfones; Polyethersulfones · CPC title

• C08J2481/06

  Polysulfones; Polyethersulfones · CPC title

• C08J3/226 Primary

  using a polymer as a carrier · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title

• C08J2479/08

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title