公开(公告)号：US20230151210A1

公开(公告)日：2023-05-18

申请号：US17995658

申请日：2022-03-22

Applicant: XEROX CORPORATION ,  NATIONAL RESEARCH COUNCIL OF CANADA

Inventor： Sarah J. VELLA ,  Alexandros VASILEIOU ,  Yujie ZHU ,  Edward G. ZWARTZ ,  Chantal PAQUET

IPC: C08L67/04 ,  B33Y70/10 ,  C08L71/02

CPC classification number: C08L67/04 ,  B33Y70/10 ,  C08L71/02 ,  B29K2101/12

Abstract: Parts made by additive manufacturing are often structural in nature, rather than having functional properties conveyed by a polymer or other component present therein. Printed parts having piezoelectric properties may be formed using compositions comprising a polymer matrix comprising a first polymer material and a second polymer material that are immiscible with each other, and a plurality of piezoelectric particles substantially localized in one of the first polymer material or the second polymer material. The piezoelectric particles may remain substantially non-agglomerated when combined with the polymer matrix. The compositions may define a form factor such as a composite filament, a composite pellet, or an extrudable composite paste. Additive manufacturing processes using the compositions may comprise forming a printed part by depositing the compositions layer-by-layer.

公开(公告)号：US20230150188A1

公开(公告)日：2023-05-18

申请号：US17995563

申请日：2022-03-22

Applicant: XEROX CORPORATION ,  NATIONAL RESEARCH COUNCIL OF CANADA

Inventor： Sarah J. VELLA ,  Alexandros VASILEIOU ,  Yujie ZHU ,  Edward G. ZWARTZ ,  Chantal PAQUET

IPC: B29C64/118 ,  B33Y70/10 ,  B33Y10/00 ,  B29C64/314

CPC classification number: B29C64/118 ,  B33Y70/10 ,  B33Y10/00 ,  B29C64/314 ,  B29K2101/12

Abstract: Parts made by additive manufacturing are often structural in nature, rather than having functional properties conveyed by a polymer or other component. Printed parts having piezoelectric properties may be formed using compositions comprising a plurality of piezoelectric particles non-covalently interacting with at least a portion of a polymer material via π-π bonding, hydrogen bonding, electrostatic interactions stronger than van der Waals interactions, or any combination thereof. The piezoelectric particles may be dispersed in the polymer material and remain substantially non-agglomerated when combined with the polymer material. The polymer material may comprise at least one thermoplastic polymer, optionally further including a polymer precursor. The compositions may define an extrudable material that is a composite having a form factor such as a composite filament, a composite pellet, a composite powder, or a composite paste. Additive manufacturing processes using the compositions may comprise forming a printed part by depositing the compositions layer-by-layer.

公开(公告)号：US20230135112A1

公开(公告)日：2023-05-04

申请号：US17995684

申请日：2022-03-22

Applicant: XEROX CORPORATION ,  NATIONAL RESEARCH COUNCIL OF CANADA

Inventor： Sarah J. VELLA ,  Alexandros VASILEIOU ,  Yujie ZHU ,  Edward G. ZWARTZ ,  Chantal PAQUET

IPC: H10N30/85 ,  C09D167/04 ,  C09D7/61 ,  C09D5/24 ,  C09D4/06 ,  H10N30/092 ,  B29C64/165 ,  B33Y70/10 ,  B33Y10/00

Abstract: Parts made by additive manufacturing are often structural in nature, rather than having functional properties conveyed by a polymer or other component present therein. Printed parts having piezoelectric properties may be formed using compositions comprising a plurality of piezoelectric particles and a polymer material comprising at least one thermoplastic polymer and at least one photocurable polymer precursor. The at least one photocurable polymer precursor may undergo a reaction in the presence of electromagnetic radiation, optionally undergoing a reaction with the piezoelectric particles, in the course of forming the printed part. The piezoelectric particles may be mixed with the polymer material and remain substantially non-agglomerated when combined with the polymer material. The compositions may define a form factor such as a composite filament, a composite pellet, or an extrudable composite paste, which may be utilized in forming printed parts by extrusion and layer-by-layer deposition, followed by curing.

公开(公告)号：US20230122929A1

公开(公告)日：2023-04-20

申请号：US17999687

申请日：2022-03-22

Applicant: XEROX CORPORATION ,  NATIONAL RESEARCH COUNCIL OF CANADA

Inventor： Sarah J. VELLA ,  Alexandros VASILEIOU ,  Yujie ZHU ,  Edward G. ZWARTZ ,  Chantal PAQUET ,  Silvio E. KRUGER ,  Mohammad RAFIEE ,  Yujie ZHANG ,  Thomas LACELLE ,  Derek ARANGUREN VAN EGMOND ,  Claudie ROY

IPC: B29C64/118 ,  B33Y70/10 ,  B33Y10/00 ,  B29C64/40

Abstract: Parts made by additive manufacturing are often structural in nature, rather than having functional properties conveyed by a polymer or other component present therein. Printed parts having piezoelectric properties may be formed using compositions comprising a plurality of piezoelectric particles located in a polymer matrix comprising a first polymer material and a sacrificial material that are immiscible with each other. The sacrificial material, which may comprise a second polymer material, may be removable from the first polymer material under specified conditions. The piezoelectric particles may remain substantially non-agglomerated when combined with the polymer matrix. The polymer matrix may be treated to remove the sacrificial material to introduce a plurality of pores. The compositions may have a form factor such as a composite filament, a composite pellet, a composite powder, or a composite paste. Additive manufacturing processes may comprise forming a printed part by depositing the compositions layer-by-layer.