公开(公告)号：US20240351290A1

公开(公告)日：2024-10-24

申请号：US18444350

申请日：2024-02-16

申请人： Carnegie Mellon University

发明人： Andrew Hudson ,  Thomas Hinton ,  Adam Feinberg ,  Andrew Lee

IPC分类号： B29C64/40 ,  A61L27/20 ,  A61L27/22 ,  A61L27/24 ,  A61L27/52 ,  A61L27/56 ,  B29C64/106 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

CPC分类号： B29C64/40 ,  A61L27/20 ,  A61L27/222 ,  A61L27/24 ,  A61L27/52 ,  A61L27/56 ,  B29C64/106 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

摘要： This document describes systems and method of embedded printing for additive manufacturing. A print material is printed into a support material. The print material and the support material each have a fluid phase and a solid phase. The print material transitions from the fluid phase to the solid phase based on a fluid-fluid interaction with the support material. One or more parameters of the support material can be adjusted to cause a diffusion rate of the print material into the support material during the fluid-fluid interaction to be less than a threshold value. Multiple print materials can be printed into the support material simultaneously.

公开(公告)号：US11931969B2

公开(公告)日：2024-03-19

申请号：US16603173

申请日：2018-04-06

申请人： Carnegie Mellon University

发明人： Andrew Hudson ,  Thomas Hinton ,  Adam Feinberg ,  Andrew Lee

IPC分类号： B29C64/40 ,  A61L27/20 ,  A61L27/22 ,  A61L27/24 ,  A61L27/52 ,  A61L27/56 ,  B29C64/106 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

CPC分类号： B29C64/40 ,  A61L27/20 ,  A61L27/222 ,  A61L27/24 ,  A61L27/52 ,  A61L27/56 ,  B29C64/106 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

摘要： This document describes systems and method of embedded printing for additive manufacturing. A print material is printed into a support material. The print material and the support material each have a fluid phase and a solid phase. The print material transitions from the fluid phase to the solid phase based on a fluid-fluid interaction with the support material. One or more parameters of the support material can be adjusted to cause a diffusion rate of the print material into the support material during the fluid-fluid interaction to be less than a threshold value. Multiple print materials can be printed into the support material simultaneously.

公开(公告)号：US20240110017A1

公开(公告)日：2024-04-04

申请号：US18196884

申请日：2023-05-12

申请人： Carnegie Mellon University

发明人： Andrew Hudson ,  Thomas Hinton ,  Adam Feinberg ,  Andrew Lee

IPC分类号： C08J3/075 ,  B33Y70/00 ,  C09D11/04

CPC分类号： C08J3/075 ,  B33Y70/00 ,  C09D11/04 ,  B29C64/40

摘要： This document describes a process of producing gel microparticles, which are consistent in size and morphology. Through the process of coacervation, large volumes of gel microparticle slurry can be produced by scaling up reactor vessel size. Particles can be repeatedly dehydrated and rehydrated in accordance to their environment, allowing for the storage of particles in a non-solvent such as ethanol. Gel slurries exhibit a Bingham plastic behavior in which the slurry behaves as a solid at shear stresses that are below a critical value. Upon reaching the critical shear stress, the slurry undergoes a rapid decrease in viscosity and behaves as a liquid. The rheological behavior of these slurries can be adjusted by changing the compaction processes such as centrifugation force to alter the yield-stress. The narrower distribution and reduced size of these particles allows for an increase in FRESH printing fidelity.

公开(公告)号：US11692070B2

公开(公告)日：2023-07-04

申请号：US16603158

申请日：2018-04-05

申请人： Carnegie Mellon University

发明人： Andrew Hudson ,  Thomas Hinton ,  Adam Feinberg ,  Andrew Lee

IPC分类号： C08L1/00 ,  C08L89/00 ,  C08G61/04 ,  C08J3/075 ,  B33Y70/00 ,  C09D11/04 ,  B29C64/40

CPC分类号： C08J3/075 ,  B33Y70/00 ,  C09D11/04 ,  B29C64/40 ,  C08J2389/00 ,  C08J2389/04

摘要： This document describes a process of producing gel microparticles, which are consistent in size and morphology. Through the process of coacervation, large volumes of gel microparticle slurry can be produced by scaling up reactor vessel size. Particles can be repeatedly dehydrated and rehydrated in accordance to their environment, allowing for the storage of particles in a non-solvent such as ethanol. Gel slurries exhibit a Bingham plastic behavior in which the slurry behaves as a solid at shear stresses that are below a critical value. Upon reaching the critical shear stress, the slurry undergoes a rapid decrease in viscosity and behaves as a liquid. The rheological behavior of these slurries can be adjusted by changing the compaction processes such as centrifugation force to alter the yield-stress. The narrower distribution and reduced size of these particles allows for an increase in FRESH printing fidelity.