Three-dimensional printing

Patent metadata

Field	Value
Publication number	US-2021402469-A1
Application number	US-201917054556-A
Country	US
Kind code	A1
Filing date	Mar 15, 2019
Priority date	Mar 15, 2019
Publication date	Dec 30, 2021
Grant date	—

Abstract

Described herein are kits, methods, and systems for printing metal three-dimensional objects. In an example, described is a multi-fluid kit for three-dimensional printing comprising: a first fluid comprising a first liquid vehicle comprising metal or metal precursor particles; and a second fluid comprising a second liquid vehicle comprising latex polymer particles dispersed therein, wherein the latex polymer particles have an average particle size of from about 10 nm to about 300 nm, and wherein the metal or metal precursor particles comprise metal nanoparticles, metal oxide nanoparticles, metal oxide nanoparticles and a reducing agent, or combinations thereof.

First claim

What is claimed is:

1 . A multi-fluid kit for three-dimensional printing comprising:
a first fluid comprising a first liquid vehicle comprising metal or metal precursor particles; and a second fluid comprising a second liquid vehicle comprising latex polymer particles dispersed therein, wherein the latex polymer particles have an average particle size of from about 10 nm to about 300 nm, and wherein the metal or metal precursor particles comprise metal nanoparticles, metal oxide nanoparticles, metal oxide nanoparticles and a reducing agent, or combinations thereof.

2 . The multi-fluid kit of claim 1 , wherein the latex polymer particles are made from (A) a co-polymerizable surfactant chosen from polyoxyethylene alkylphenyl ether ammonium sulfate, sodium polyoxyethylene alkylether sulfuric ester, polyoxyethylene styrenated phenyl ether ammonium sulfate, or mixtures thereof, and (B) styrene, p-methyl styrene, α-methyl styrene, methacrylic acid, acrylic acid, acrylamide, methacrylamide, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, methyl methacrylate, hexyl acrylate, hexyl methacrylate, butyl acrylate, butyl methacrylate, ethyl acrylate, ethyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, propyl acrylate, propyl methacrylate, octadecyl acrylate, octadecyl methacrylate, stearyl methacrylate, isobornyl acrylate, tetrahydrofurfuryl acrylate, 2-phenoxyethyl methacrylate, benzyl methacrylate, benzyl acrylate, ethoxylated nonyl phenol methacrylate, ethoxylated behenyl methacrylate, polypropyleneglycol monoacrylate, isobornyl methacrylate, cyclohexyl methacrylate, cyclohexyl acrylate, t-butyl methacrylate, n-octyl methacrylate, lauryl methacrylate, tridecyl methacrylate, alkoxylated tetrahydrofurfuryl acrylate, isodecyl acrylate, isobornyl methacrylate, isobornyl acrylate, acetoacetoxyethyl methacrylate, or combinations thereof.

3 . The multi-fluid kit of claim 1 , wherein the latex polymer particles comprise 2-phenoxyethyl methacrylate, cyclohexyl methacrylate, cyclohexyl acrylate, methacrylic acid, or combinations thereof.

4 . The multi-fluid kit of claim 1 , wherein the latex polymer particles comprise styrene, methyl methacrylate, butyl acrylate, methacrylic acid, or combinations thereof.

5 . The multi-fluid kit of claim 1 , wherein the latex polymer particles are present in the second fluid in an amount ranging from about 5 wt % to about 40 wt % based on the total weight of the second fluid.

6 . The multi-fluid kit of claim 1 , wherein the first liquid vehicle and the second liquid vehicle comprise water each in an amount of from about 45 wt % to about 75 wt % based on the total weight of the first liquid vehicle and the second liquid vehicle, respectively.

7 . The multi-fluid kit of claim 1 , wherein the metal nanoparticles comprise, nickel, silver, gold, copper, platinum, or combinations thereof.

8 . The multi-fluid kit of claim 1 , wherein the metal oxide nanoparticles comprise oxides of iron, nickel, silver, gold, copper, platinum, cobalt, manganese, vanadium, molybdenum, or combinations thereof.

9 . The multi-fluid kit of claim 1 , wherein the reducing agent is selected from the group consisting of aldehydes, hydrazides, hydrazine, ascorbic acid, reducing saccharides, or combinations thereof.

10 . A method of printing a three-dimensional object comprising:
(i) depositing a metal powder build material in a powder bed; (ii) based on a three-dimensional object model, selectively applying a first fluid and a second fluid on the metal powder build material in the powder bed, wherein
the first fluid comprises a first liquid vehicle comprising metal or metal precursor particles, wherein the metal or metal precursor particles comprise metal nanoparticles, metal oxide nanoparticles, metal oxide nanoparticles and a first reducing agent, metal salts, metal salts with a second reducing agent, or combinations thereof, and
the second fluid comprises a second liquid vehicle comprising latex polymer particles dispersed therein, wherein the latex polymer particles have an average particle size of from about 10 nm to about 300 nm;
(iii) repeating (i), and (ii) at least once to form the three-dimensional object; and (iv) heating the powder bed to a temperature of up to about 200° C.

11 . The method of claim 10 further comprising:
(v) removing the three-dimensional object from the powder bed and heating the three-dimensional object to a temperature of up to about 500° C.

12 . The method of claim 11 , wherein the heating to the temperature of up to about 500° C. comprises removing at least about 95 wt % of the latex polymer particles by thermally decomposing the latex polymer particles and initiate binding of metal powder particles with the metal or metal precursor particles

13 . The method of claim 10 , wherein the latex polymer particles are present in the second fluid in an amount ranging from about 1 wt % to about 50 wt % based on the total weight of the second fluid.

14 . The method of claim 11 further comprising:
(vi) heating the three-dimensional object in a sintering oven to a sintering temperature of greater than about 500° C.

15 . The method of claim 14 , wherein the heating of the three-dimensional object in the sintering oven is to a sintering temperature of greater than about 800° C.

Assignees

• Hewlett Packard Development Co

Inventors

• Nauka Krzysztof
• Kasperchik Vladek
• Shaarawi Mohammed S

Classifications

• B22F1/0545 Primary

  Dispersions or suspensions of nanosized particles · CPC title

• B22F1/107

  containing organic material comprising solvents, e.g. for slip casting · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title

• Y02P10/25

  Process efficiency · CPC title

• B22F10/14

  by jetting of binder onto a bed of metal powder · CPC title