公开(公告)号：US20220203576A1

公开(公告)日：2022-06-30

申请号：US17568664

申请日：2022-01-04

Applicant: University of Southern California

Inventor： Steven Nutt ,  Lessa Grunenfelder ,  Timotei Centea ,  Mark Anders ,  William Thomas Edwards ,  Sarah Grace Katz Schechter

IPC: B29B15/12 ,  B29C70/20 ,  B29C70/44 ,  C08J5/24

Abstract: Methods, apparatuses, and systems for making prepregs are disclosed. A method may include depositing a resin material onto a surface of a fiber bed and forming a number of discrete resin regions thereon. A distance between the resin regions may be measured to provide desired exposed portions of the surface to facilitate permeation of air through the exposed portions of the surface in a direction perpendicular to a plane of the fiber bed during a curing process of the prepreg.

公开(公告)号：US20240239021A1

公开(公告)日：2024-07-18

申请号：US18383240

申请日：2023-10-24

Applicant: University of Southern California

Inventor： Steven Nutt ,  Lessa Grunenfelder ,  Timotei Centea ,  Mark Anders ,  William Thomas Edwards ,  Sarah Grace Katz Schechter

IPC: B29B15/12 ,  B29C70/20 ,  B29C70/44 ,  C08J5/24 ,  B29K307/04 ,  B29K309/08

CPC classification number: B29B15/122 ,  B29C70/20 ,  B29C70/443 ,  C08J5/24 ,  B29K2307/04 ,  B29K2309/08 ,  C08J2361/10 ,  C08J2363/00 ,  C08J2375/04 ,  C08J2379/08

Abstract: Methods, apparatuses, and systems for making prepregs are disclosed. A method may include depositing a resin material onto a surface of a fiber bed and forming a number of discrete resin regions thereon. A distance between the resin regions may be measured to provide desired exposed portions of the surface to facilitate permeation of air through the exposed portions of the surface in a direction perpendicular to a plane of the fiber bed during a curing process of the prepreg.

公开(公告)号：US11213975B2

公开(公告)日：2022-01-04

申请号：US16475371

申请日：2018-01-05

Applicant: University of Southern California

Inventor： Steven Nutt ,  Lessa Grunenfelder ,  Timotei Centea ,  Mark Anders ,  William Thomas Edwards ,  Sarah Grace Katz Schechter

IPC: B32B3/00 ,  B29B15/12 ,  B29C70/20 ,  B29C70/44 ,  C08J5/24 ,  B29K309/08 ,  B29K307/04

Abstract: Methods, apparatuses, and systems for making prepregs are disclosed. A method may include depositing a resin material onto a surface of a fiber bed and forming a number of discrete resin regions thereon. A distance between the resin regions may be measured to provide desired exposed portions of the surface to facilitate permeation of air through the exposed portions of the surface in a direction perpendicular to a plane of the fiber bed during a curing process of the prepreg.

公开(公告)号：US20250018660A1

公开(公告)日：2025-01-16

申请号：US18702327

申请日：2022-09-29

Applicant: University of Southern California

Inventor： Mark Anders ,  Steven Nutt

IPC: B29C70/00 ,  B29B11/16 ,  B29C70/20 ,  B29C70/44 ,  B29K105/08

Abstract: Through-thickness permeable prepregs comprise a fiber bed and a plurality of discrete resin regions on a surface of the fiber bed separated by exposed fiber bed surface regions. Prepreg assemblies for processing such prepregs comprise an air permeable resin barrier material disposed over a surface of the prepreg opposite a forming tool. The air permeable resin barrier material is permeable to air or gas passing from the prepreg and is impermeable to resin passing from the prepreg. During processing, the prepreg assembly is subjected to a vacuum and elevated temperature to cure the resin and form a composite part. During processing, the air permeable resin barrier material prevents unwanted resin bleed from the prepreg, causing resin pressure in the prepreg to be maintained that reduces or eliminates unwanted formation or growth of internal voids to provide a composite part having a reduced degree of internal voids and pores.

公开(公告)号：US11794377B2

公开(公告)日：2023-10-24

申请号：US17568664

申请日：2022-01-04

Applicant: University of Southern California

Inventor： Steven Nutt ,  Lessa Grunenfelder ,  Timotei Centea ,  Mark Anders ,  William Thomas Edwards ,  Sarah Grace Katz Schechter

IPC: B32B3/00 ,  B29B15/12 ,  B29C70/20 ,  B29C70/44 ,  C08J5/24 ,  B29K307/04 ,  B29K309/08

CPC classification number: B29B15/122 ,  B29C70/20 ,  B29C70/443 ,  C08J5/24 ,  B29K2307/04 ,  B29K2309/08 ,  C08J2361/10 ,  C08J2363/00 ,  C08J2375/04 ,  C08J2379/08

Abstract: Methods, apparatuses, and systems for making prepregs are disclosed. A method may include depositing a resin material onto a surface of a fiber bed and forming a number of discrete resin regions thereon. A distance between the resin regions may be measured to provide desired exposed portions of the surface to facilitate permeation of air through the exposed portions of the surface in a direction perpendicular to a plane of the fiber bed during a curing process of the prepreg.