US 11,718,032 B2
Plasma-treated powders for additive manufacturing
Nishant Kumar Sinha, Bangalore (IN); and Om Prakash, Bangalore (IN)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jul. 31, 2019, as Appl. No. 16/527,385.
Prior Publication US 2021/0031452 A1, Feb. 4, 2021
Int. Cl. B29C 64/314 (2017.01); B33Y 10/00 (2015.01); B33Y 40/00 (2020.01); B29C 64/153 (2017.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); B29C 64/20 (2017.01); B29C 64/393 (2017.01); C09D 11/101 (2014.01); C09D 11/102 (2014.01)
CPC B29C 64/314 (2017.08) [B29C 64/153 (2017.08); B29C 64/20 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C09D 11/101 (2013.01); C09D 11/102 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of additive manufacturing, the method comprising:
exposing a first particulate material to a first plasma such that an amine-functionalized particulate is formed, wherein the amine-functionalized particulate comprises amine chemical moieties;
exposing a second particulate material to a second plasma such that an epoxide-functionalized particulate is formed, wherein the epoxide-functionalized particulate comprises epoxide chemical moieties;
combining the amine-functionalized particulate and the epoxide-functionalized particulate;
heating the combination to form a heated combination; and
cooling the heated combination to form a structure,
wherein heating comprises selective laser sintering of a discontinuous intra-layer portion comprising separate first regions of a first portion not in contact with each other, but otherwise in contact with corresponding separate second regions of a second portion.