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公开(公告)号：US20240092040A1
公开(公告)日：2024-03-21
申请号：US18273544
申请日：2022-02-03
Applicant: ARKEMA FRANCE
Inventor： Arthur BABEAU , Axel SALINIER , Thibaut SAVART , Gilles HOCHSTETTER
CPC classification number: B29C70/386 , B29C70/32 , B29C70/54 , B29K2995/004 , B29L2031/52
Abstract: A method for preparing composite parts, including a step of depositing at least one band of fibrous material impregnated with a thermoplastic polymer on a substrate, by means of a main heating system selected from the following two systems: a preheating system (1) and a heating system (2), in combination with at least one secondary heating system selected from: a heating system (3), a post-heating system (4), a heating system (5), and a preheating system (6), or by means of the two main heating systems (1) and (2), the substrate being previously devoid of any deposited band or comprising at least one band n−1 of said fibrous material, the thermoplastic polymer being amorphous, with a Tg such that Tg≥80° C., or semicrystalline, with a Tm≥150° C.
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公开(公告)号：US20220258439A1
公开(公告)日：2022-08-18
申请号：US17628925
申请日：2020-07-22
Applicant: Arkema France
Inventor： Gilles HOCHSTETTER
Abstract: A thin-walled mold and a method for manufacturing a part made of composite material, the material including reinforcing fibers and a polymer matrix, the method including the following consecutive steps: installing, in a matrix mounted on a press, a closed thin-walled mold in which reinforcing fibers have been arranged; closing the press; injecting a polymer or a reactive composition including at least one prepolymer, at least one monomer or a mixture thereof, in the molten state, into the closed thin-walled mold; keeping the press closed during all or part of the polymerisation of the polymer matrix when a reactive composition is used; opening the press and removing the thin-walled mold from the press, while maintaining a residual pressure of between 0.7 and 10 bar, preferably between 0.7 and 5 bar, inside the mold; and cooling the mold under said residual pressure.
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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
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%.
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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.
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25.发明申请公开(公告)号：US20190322806A1
公开(公告)日：2019-10-24
申请号：US16433122
申请日：2019-06-06
Applicant: ARKEMA FRANCE
Inventor： Benoit BRULE , Philippe BUSSI , Gilles HOCHSTETTER , Guillaume LE , Barbara RAMFEL
Abstract: One subject of the present invention is a composition that combines at least one polyamide having at least one MXD entity, MXD denoting meta-xylylenediamine or a mixture of meta-xylylenediamine and of para-xylylenediamine, with a bioresourced reinforcement. The invention also relates to the conversion of these compositions, by injection moulding or extrusion, into objects that have good mechanical properties, said objects corresponding to technical application specifications such as may be found, for example, in the automotive industry, construction, sport and in electrical or electronic fields.
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Patent Agency Ranking
公开(公告)号：US20190153178A1
公开(公告)日：2019-05-23
申请号：US16091256
申请日：2017-03-31
Applicant: ARKEMA FRANCE
Inventor： Gilles HOCHSTETTER , Mathieu CAPELOT
Abstract: A method of manufacturing a component made of composite material whereby the said component is obtained from a preform containing local reinforcers and a first resin of low viscosity. The method includes: creation of the said preform comprising a first fibrous material and the said local reinforcers being in the form of reinforcers formed of a second fibrous material having fibres of mechanical strength greater than that of the fibres of the first fibrous material, so that they exhibit an elastic modulus or breaking stress at least 30% higher than that of the fibres of the said first fibrous material, the said second fibrous material being pre-impregnated with a thermoplastic, acrylic or polyamide polymer second resin having a glass transition temperature (Tg) above 80° C., the amount of polymer second resin being comprised between 25% and 60% by volume with respect to the total volume of the said second fibrous material.
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公开(公告)号：US20190040198A1
公开(公告)日：2019-02-07
申请号：US15758968
申请日：2017-07-10
Applicant: ARKEMA FRANCE
Inventor： Mathieu CAPELOT , Gilles HOCHSTETTER
Abstract: The invention relates to a composition for thermoplastic material comprising: 0 to 70% by weight, preferentially 20% to 60% by weight, of short reinforcing fibers, 30% to 100% by weight, preferentially 40% to 80% by weight, of a thermoplastic matrix based on at least one semi-crystalline polyamide polymer, 0 to 50% of additives and/or other polymers, said semi-crystalline polyamide polymer being: a) a reactive composition comprising or consisting of at least one reactive polyamide prepolymer which is a precursor of said semi-crystalline polyamide polymer, or, as an alternative to a), b) a nonreactive composition of at least one polyamide polymer, said composition being that of said thermoplastic matrix defined above, and said reactive polyamide prepolymer of the composition a) and said polyamide polymer of the composition b) comprising or consisting of at least one BACT/XT copolyamide.
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28.发明申请公开(公告)号：US20180057748A1
公开(公告)日：2018-03-01
申请号：US15556051
申请日：2016-03-10
Applicant: Arkema France
Inventor： Gilles HOCHSTETTER , Marc AUDENAERT , Sébastien TAILLEMITE
CPC classification number: C09K21/14 , C08K3/016 , C08K3/04 , C08K3/36 , C08K3/38 , C08K3/40 , C08K5/0016 , C08L27/12 , C08L2201/02
Abstract: The present invention relates to the field of thermoplastic composite materials. Specifically, the invention relates to a fluorinated, flame-retardant thermoplastic composition, to the prepreg prepared from said composition, to the composite material containing said prepreg, to the methods enabling manufacture, and to the uses of said material. The invention also relates to the use of a thermoplastic prepreg for manufacturing fire-resistant composite materials.
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29.发明申请公开(公告)号：US20170335107A1
公开(公告)日：2017-11-23
申请号：US15667211
申请日：2017-08-02
Applicant: ARKEMA FRANCE
Inventor： Thierry BRIFFAUD , Gilles HOCHSTETTER
CPC classification number: C08L77/06 , B29C70/021 , C08G69/265 , C08J5/04 , C08J5/24 , C08J2377/06 , C08K7/04 , C08L2205/025
Abstract: A composition for a thermoplastic composite material having a thermoplastic matrix made of a semi-crystalline polyamide having a specific composition that includes at least two amide units, A, 55-95 mol %, and B, 5-45 mol %. A corresponds to x.T, wherein x is a C9-C18 linear aliphatic diamine and B corresponds to x′.T, wherein x′ can be B1): a specific branched x-dependent aliphatic diamine, B2): MXD or B3): a linear x-dependent aliphatic diamine, said polyamide having a glass transition temperature Tg of at least 90° C. and a melting point no higher than 280° C. Also, a method for manufacturing the composite material, the semi-crystalline polyamide polymer, the use of the composition and of the polymer for parts made of composite material, as well as the material and the resulting composite part.
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30.发明申请公开(公告)号：US20170165875A1
公开(公告)日：2017-06-15
申请号：US15118188
申请日：2015-02-11
Applicant: ARKEMA FRANCE
Inventor： Patrice GAILLARD , Gilles HOCHSTETTER , Thibaut SAVART
CPC classification number: B29B15/12 , B29B15/122 , B29C70/382 , B29C70/506 , B29K2101/12 , B29K2105/10
Abstract: A method of producing a pre-impregnated fibrous material including a fibrous material of continuous fibres and a thermoplastic polymer matrix, wherein the pre-impregnated fibrous material is produced in a single unidirectional strip or in a plurality of parallel unidirectional strips, the method including the following steps: (i) impregnating the fibrous material in the form of a strand or a plurality of parallel strands with the thermoplastic polymer in the form of a powder in a fluid bed; and (ii) shaping the strand or parallel strands of the fibrous material impregnated as in step (i) by calendering by at least one heating calender in the form of a single unidirectional strip or of a plurality of parallel unidirectional strips, the heating calender, in the latter case, including a plurality of calendering grooves, and the pressure and/or a spacing between the rollers of the calender being regulated by an auxiliary system.
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