公开(公告)号：US20200216627A1

公开(公告)日：2020-07-09

申请号：US16624441

申请日：2018-06-21

Applicant: ARKEMA FRANCE

Inventor： Gilles HOCHSTETTER ,  Mathieu CAPELOT ,  Thibaut SAVART ,  Arthur Pierre BABEAU ,  Denis HUZE ,  François TANGUY ,  Patrice GAILLARD

IPC: C08J5/24

Abstract: The present invention relates to an impregnated fibrous material comprising a fibrous material made of continuous fibers and at least one reactive thermoplastic prepolymer, and optionally a chain extender, characterized in that the at least one reactive thermoplastic prepolymer is partially polymerized, optionally with the chain extender, and has a number-average molecular weight (Mn) ranging from 500 to 10,000, preferably from 4,000 to 8000, the proportion of fibers in the impregnated fibrous material being 45 to 65% by volume, preferably 50 to 60% by volume, and in particular 54 to 60%.

公开(公告)号：US20220016807A1

公开(公告)日：2022-01-20

申请号：US17296651

申请日：2019-11-25

Applicant: Arkema France

Inventor： Gilles HOCHSTETTER ,  Arthur Pierre BABEAU ,  Axel SALINIER ,  Thibaut SAVART

IPC: B29B15/12 ,  B29B15/14

Abstract: Manufacture of a pre-impregnated fibrous material which contains continuous fibers and a thermoplastic matrix, the material being made as a plurality of unidirectional parallel ribbons or sheets, and the method involving a step of pre-impregnating, in dry conditions, N parallel strands divided into X groups of Ni strands, by the thermoplastic matrix in powder form in a tank, ΣNi=N et X 3, one thereof from each series being immersed in the powder, each group of strands running on the same number Y of tensioning parts, and the parallel strands being separated by a spacing at least equal to the width of each strand.

公开(公告)号：US20220063137A1

公开(公告)日：2022-03-03

申请号：US17415073

申请日：2019-12-16

Applicant: ARKEMA FRANCE

Inventor： Gilles HOCHSTETTER ,  Thibaut SAVART ,  Arthur Pierre BABEAU ,  Axel SALINIER

IPC: B29B15/12

Abstract: Method for manufacturing a material including a fibrous material with continuous fibres and a thermoplastic polymer matrix, the material being produced as a unidirectional band, the method including a step of pre-impregnation of a strand of the fibrous material by the matrix in powdered form, the pre-impregnation step being carried out in a fluidised bed including a grooved roller component, the strand being in contact with the surface of the roller component and including up to 0.1% by weight of sizing, the matrix rate being controlled by controlling the dwell time in the powder and by constantly controlling the tension of the strand when it is introduced into the fluidised bed.

公开(公告)号：US20210016523A1

公开(公告)日：2021-01-21

申请号：US17040230

申请日：2019-03-19

Applicant: ARKEMA FRANCE

Inventor： Gilles HOCHSTETTER ,  Thibaut SAVART ,  Arthur Pierre BABEAU ,  Anthony FLORENCIE ,  Patrice GAILLARD ,  Axel SALINIER

IPC: B29C70/52 ,  C08J5/04 ,  C08J5/24

Abstract: An impregnated fibrous material including at least one fibrous material of continuous fibers and: at least one non-reactive thermoplastic polymer matrix, or at least one reactive thermoplastic prepolymer, which is a precursor of the non-reactive thermoplastic polymer, optionally mixed with a chain extender, wherein the at least one non-reactive thermoplastic polymer or the reactive prepolymer is an amorphous polymer or prepolymer having a glass transition temperature such that Tg≥80° C., or is a semi-crystalline polymer or prepolymer having a melting temperature Tf≥150° C., the fiber content in the pre-impregnated fibrous material being between 45 and 65 volume %, and the average thickness of the impregnated fibrous material being less than or equal to 100 μm, independently of the number of fibers present in the fibrous material before impregnation.

公开(公告)号：US20200223102A1

公开(公告)日：2020-07-16

申请号：US16623946

申请日：2018-06-21

Applicant: Arkema France

Inventor： Gilles HOCHSTETTER ,  Mathieu CAPELOT ,  Thibaut SAVART ,  Arthur Pierre BABEAU ,  Denis HUZE ,  François TANGUY ,  Patrice GAILLARD

IPC: B29B15/12 ,  B29C35/08

Abstract: A method of manufacturing an impregnated fibrous material including a fibrous material made of continuous fibers and at least one thermoplastic polymer matrix, the method including pre-impregnating the fibrous material while it is in the form of a roving or several parallel rovings with the thermoplastic material and heating the thermoplastic matrix for melting, or maintaining in the molten state, the thermoplastic polymer after pre-impregnation, the at least one heating step being carried out by means of at least one heat-conducting spreading part (E) and at least one heating system, with the exception of a heated calendar, the roving or the rovings being in contact with part or all of the surface of the at least one spreading part (E) and partially or wholly passing over the surface of the at least one spreading part (E) at the level of the heating system.

公开(公告)号：US20200139586A1

公开(公告)日：2020-05-07

申请号：US16623991

申请日：2018-06-21

Applicant: Arkema France

Inventor： Gilles HOCHSTETTER ,  Mathieu CAPELOT ,  Denis HUZE ,  François TANGUY ,  Thibaut SAVART ,  Arthur Pierre BABEAU ,  Patrice GAILLARD

IPC: B29B15/12 ,  C08J5/04

Abstract: An impregnated fibrous material comprising a fibrous material made of continuous fiber and at least one thermoplastic polymer matrix, wherein the at least one thermoplastic polymer is an non-reactive amorphous polymer, the glass transition temperature of which is such that Tg≥80° C., or a non-reactive semi-crystalline polymer, the melting temperature of which is Tf≥150° C., the fiber volume ratio is constant in at least 70% of the volume of the tape or ribbon, the fiber ratio in the pre-impregnated fibrous material ranging from 45 to 65% by volume, the porosity rate in the pre-impregnated fibrous material being less than 10%.

公开(公告)号：US20220402170A1

公开(公告)日：2022-12-22

申请号：US17774975

申请日：2020-11-05

Applicant: Arkema France

Inventor： Thibaut SAVART ,  Arthur Pierre BABEAU ,  Axel SALINIER ,  Denis HUZE

IPC: B29B15/14 ,  B29C70/00 ,  B29C70/16 ,  B29C70/50

Abstract: A method for manufacturing an impregnated fibrous material comprising at least one fibrous material made of continuous fibres and at least one thermoplastic polymer matrix comprises a step of pre-impregnating the fibrous material with a thermoplastic polymer matrix in powder form. This step is carried out dry in a tank comprising a fluidized bed, while keeping the level h of the powder and the mass m of the powder present in the tank substantially constant. The level h is from hi to hi−3%, during implementation of the pre-impregnation step, and hi is the initial level of the powder in the tank at the start of implementation of the pre-impregnation step, the mass m is from mi to mi±0.5% during implementation of the pre-impregnation step, and mi is the initial mass of the powder in the tank at the start of implementation of the pre-impregnation step.

公开(公告)号：US20210276225A1

公开(公告)日：2021-09-09

申请号：US17327831

申请日：2021-05-24

Applicant: Arkema France

Inventor： Gilles HOCHSTETTER ,  Mathieu CAPELOT ,  Thibaut SAVART ,  Arthur Pierre BABEAU ,  Denis HUZE ,  François TANGUY ,  Patrice GAILLARD

IPC: B29B15/12 ,  B29C35/08

Abstract: An impregnated fibrous material comprising a fibrous material of continuous fibers and at least one thermoplastic polymer matrix, wherein at least one thermoplastic polymer is a non-reactive amorphous polymer whose glass transition temperature is such that Tp≥80° C., or a non-reactive semi-crystalline polymer whose melting temperature is Tf≥150° C., where Tg and Tf are determined by differential scanning calorimetry (DSC) according to standard 11357-2:2013 and 11357-3:2013 respectively, a fiber content by volume is constant in at least 70% of the volume of the impregnated fibrous material, the fiber content in said impregnated fibrous material being between 45 and 65% by volume on both sides of said fibrous material, a porosity rate in said impregnated fibrous material being less than 10%.

公开(公告)号：US20210086403A1

公开(公告)日：2021-03-25

申请号：US17040307

申请日：2019-03-19

Applicant: Arkema France

Inventor： Thibaut SAVART ,  Gilles HOCHSTETTER ,  Anthony FLORENCIE ,  Patrice GAILLARD ,  Axel SALINIER ,  Arthur Pierre BABEAU

IPC: B29B15/12

Abstract: A web of impregnated fibrous material(s) including N individual tapes of fibrous material(s) stacked and/or joined in relation to one another, in which said N tapes adhere to each other and can overlap at least partially. The tapes of fibrous material(s) include continuous fibers impregnated with at least one thermoplastic polymer, and optionally a chain extender. The web has a surface, in cross-section perpendicular to the axis of the fibers, S, that is substantially equal to the sum of the surface, in cross-section perpendicular to the axis of the fibers, of each initial individual tape, denoted Sth, Sth being equal to N×I×Ep, wherein l represents the average width of a tape and Ep represents the average thickness of a tape, N being between 2 and 2000, and the average thickness of each individual tape being less than or equal to 150 μm.