公开(公告)号：US20210130557A1

公开(公告)日：2021-05-06

申请号：US16500160

申请日：2018-04-05

Applicant: Arkema France

Inventor： Benoît BRULE ,  Henri-Alexandre CAYZAC ,  Guillaume LE ,  Jerome PASCAL ,  Fabien SGUERRA

IPC: C08J5/10 ,  C08J5/24

Abstract: The invention is targeted mainly at a process for the preparation of a semifinished product comprising a PAEK-based resin and reinforcing fibers, comprising the stages of: a. preparation of a dispersion comprising a PAEK-based resin in the pulverulent form dispersed in an aqueous phase comprising a surfactant; b. bringing the reinforcing fibers into contact with said aqueous dispersion; c. drying the fibers impregnated with dispersion; and d. heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product, characterized in that the surfactant is a thermally stable surfactant. It is furthermore targeted at the dispersion of use in said process. Finally, it is targeted at the semifinished products capable of being obtained and also at their use in the manufacture of composite materials.

公开(公告)号：US20230374237A1

公开(公告)日：2023-11-23

申请号：US18321904

申请日：2023-05-23

Applicant: ARKEMA FRANCE

Inventor： Benoît BRULE ,  Henri-Alexandre CAYZAC ,  Guillaume LE ,  Jerome PASCAL ,  Fabien SGUERRA

IPC: C08J5/24

CPC classification number: C08J5/249 ,  C08J2300/22 ,  C08J2329/10 ,  C08J2329/12 ,  C08J2361/18

Abstract: A process for the preparation of a semifinished product including a PAEK-based resin and reinforcing fibers, including the stages of: a. preparation of a dispersion including a PAEK-based resin in the pulverulent form dispersed in an aqueous phase including a surfactant; b. bringing the reinforcing fibers into contact with said aqueous dispersion; c. drying the fibers impregnated with dispersion; and d. heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product, wherein the surfactant is a thermally stable surfactant. Also, semifinished products capable of being obtained from the process and their use in the manufacture of composite materials.

公开(公告)号：US20230349798A1

公开(公告)日：2023-11-02

申请号：US18004467

申请日：2021-07-09

Applicant: ARKEMA FRANCE

Inventor： Henri-Alexandre CAYZAC ,  Jérôme PASCAL ,  Régis CIPRIANI

IPC: G01N3/08 ,  B29C70/06 ,  B29C70/44 ,  B29C70/54

CPC classification number: G01N3/08 ,  B29C70/06 ,  B29C70/44 ,  B29C70/54 ,  B29K2101/12

Abstract: A method for analyzing semifinished products including reinforcing fibers having an essentially unidirectional orientation and a thermoplastic resin, including a first and a second test for measuring the thickness of a stack of semifinished products over time during the compression thereof and for determining the equivalent homogeneous viscosity of the stack; determining the total thickness reduction of the stack of semifinished products during the first test; determining the ratio of the equivalent homogeneous viscosity of the stack from the second test to the equivalent homogeneous viscosity of the stack from the first test; and determining the ratio of the thickness of the stack from the first test after a reference time starting from the moment of the onset of melting of the stack of semifinished products, to the thickness of the stack from the first test at the moment of the onset of melting of the stack of semifinished products.