Patent ID: 11904533
Assignee: THE BOEING COMPANY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  G  H  Y | IPC B  C  G

Claim 0:
1. A method of forming an object in an additive manufacturing (AM) process, the method comprising:
advancing a plurality of powder particles through a chamber, each of the plurality of powder particles being formed of a base polymer material having a first dielectric loss factor with a first tan value in a predefined microwave frequency range;
applying a liquid coating to an exterior of each of the plurality of powder particles, the liquid coating being formed of a coating polymer material distinct from the base polymer material and having a second dielectric loss factor with a second tan value in the predefined microwave frequency range, the second tan value being at least about 50times larger than the first tan value of the base polymer material and thereby more susceptible to heating in response to electromagnetic energy than the base polymer material;
drying the liquid coating on the plurality of powder particles to form a plurality of coated powder particles, wherein each of the plurality of coated powder particles comprises a base polymer layer formed by the powder particle and a coating polymer layer formed by the liquid coating after drying the liquid coating; and
forming an object in the AM process using the coated powder particles with the dried coating polymer material coated on the base polymer material.