WO2022017106A1 - Profil de matériau composite à déformation continue exposée - Google Patents

Profil de matériau composite à déformation continue exposée Download PDF

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Publication number
WO2022017106A1
WO2022017106A1 PCT/CN2021/101530 CN2021101530W WO2022017106A1 WO 2022017106 A1 WO2022017106 A1 WO 2022017106A1 CN 2021101530 W CN2021101530 W CN 2021101530W WO 2022017106 A1 WO2022017106 A1 WO 2022017106A1
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WIPO (PCT)
Prior art keywords
continuous
composite material
prepreg
profile
tube blank
Prior art date
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Ceased
Application number
PCT/CN2021/101530
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English (en)
Chinese (zh)
Inventor
仝伟
仝娜
徐发春
龚玉洁
宋宁宁
包慧
茆顺壮
李涛
刘学东
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JIANGSU YIDING POWER TECHNOLOGY Co Ltd
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JIANGSU YIDING POWER TECHNOLOGY Co Ltd
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Publication of WO2022017106A1 publication Critical patent/WO2022017106A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/542—Placing or positioning the reinforcement in a covering or packaging element before or during moulding, e.g. drawing in a sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/681—Component parts, details or accessories; Auxiliary operations
    • B29C70/683—Pretreatment of the preformed part, e.g. insert

Definitions

  • This application is a divisional application of the Chinese invention patent "A Continuous Deformation Composite Material Profile and its Preparation Method" with the application number of 202010710421.9 and the application date of 2020.07.22.
  • the present invention relates to the field of composite materials, and in particular to an exposed continuous Deformable composite profiles.
  • the high-strength fiber composite material profile produced by bundling a plurality of long high-strength fibers and impregnating them with resin has high tensile strength, low stretchability, light weight, and excellent corrosion resistance. Therefore, it is being widely used in bridges, concrete structures, power lines, etc.
  • the process of preparing high-strength fiber composite material profiles is as follows: first, continuous fiber materials such as carbon fibers are twisted and fixed together, and then fully impregnated through the epoxy resin dipping tank of the base material, and then extruded. The pulled-out bundled product finally passes through the curing chamber to allow the resin to be fully hardened indoors, such as the carbon fiber composite stranded wire manufacturing method and equipment disclosed in Chinese patent CN101295564B, and the fiber composite stranded cable disclosed in CN201933348U .
  • CN105304189A uses the pultrusion technology to make a composite wire with a diameter of 1.7-4.0mm, uses the longitudinal wrapping welding technology to coat the wire with stainless steel with a thickness of 0.1-0.2mm, and then twists a plurality of stainless steel armored wires.
  • the load-bearing profile of this structure solves the contradiction between easy bending and anti-breakage, but in the process of twisting into a cable, the profile is forcibly deformed from a straight line to a helix, because the profile with an armored layer is formed.
  • the production of composite materials is made by continuous pultrusion technology of composite materials.
  • the continuous fiber material impregnated with resin must be cured in the cavity mold, during the curing process, the continuous fiber material impregnated with resin will be carried out between the cavity mold where it is located. Relative movement, if the cross-sectional shape, size or space shape of the cavity mold is deformed in the process of their relative movement, it will inevitably cause the relative movement to be unsmooth or even stop, and the above-mentioned low viscosity viscosity cannot be controlled in the process.
  • the present invention provides a bare continuous deformation composite material profile.
  • the continuous deformation composite material profile can be continuously prepared, and the availability of the continuous deformation composite material profile can ensure that the performance requirements of various aspects need to be integrated.
  • the composites value engineering design requires .
  • a preparation method of a continuously deformed composite material profile comprises the following steps performed in sequence:
  • Prepreg is obtained by impregnating continuous longitudinal fibers with resin, and metal is continuously welded or extruded to obtain a tube blank.
  • the preparation of the prepreg and the preparation of the tube blank may or may not be performed at the same time.
  • the prepreg is continuously brought into the tube blank to obtain the material to be deformed.
  • the prepreg may or may not be filled with the inlet of the tube blank.
  • Part of the excess resin in the material is squeezed out.
  • part of the excess resin in the prepreg is left in the tube blank or flows out of the tube blank in a vertical flow.
  • this step can preliminarily control the volume ratio of continuous longitudinal fibers and resin.
  • the spatial shape of the tube blank can be either linear or It can be transformed into a two-dimensional plane curve, such as a plane wave, or a three-dimensional space curve, such as a helix, and because the prepreg and the tube blank are driven synchronously, the cross-section of the material to be formed and/or
  • the spatial form can be deformed differently in different sections, forming a continuous whole, but different cross-sectional shapes or areas, and different sections have different spatial forms. It is worth noting that the tube blank is rolled or Drawing and forming into a tube with a designed cross-section and space shape, the diameter of the tube is reduced. Because the excess resin in the prepreg is squeezed out one or more times, the volume ratio of continuous longitudinal fibers in the prepreg is increased and further controlled.
  • this step can be performed immediately at the same site at the end of step S3., or it can be performed at the same site or other sites at a design interval, and finally form the metal pipe of the profile armor layer, in this step It exists as a cavity mold required for prepreg curing and molding.
  • the function of the cavity mold also includes the functions of limiting the generation of air bubbles during the cross-linking and curing process of the prepreg, eliminating air bubbles and accurately expelling excess resin.
  • step S5 is also included, disassembling the armoring layer to obtain a bare core material.
  • the armoring layer can be stripped from the outer surface of the core material by using an online tool, etc.
  • the core material is actually a continuous deformation composite material profile, but only In the present invention, in order to make it clearer, the so-called continuous deformation composite material profiles first refer to linear continuous review materials including metal armor layers. Regardless of whether metal armor layers are included, these composite material profiles can be wound. in trays for packaging, storage, transportation, installation and use.
  • the term "continuous" in the present invention is intended to emphasize that the above method is suitable for preparing composite material profiles that can theoretically extend infinitely, so it is different from using a fixed cavity mold that moves relative to the prepreg to prepare long Preparation method of strip-shaped composite material profile.
  • the "deformation” mentioned in the present invention is intended to emphasize that the above-mentioned method is not only applicable to the preparation of all linear continuous composite material profiles with the same cross-sectional shape and size that can be prepared in the prior art, but also applicable to the preparation of various sections and/or spatial shapes. Different continuous review material profiles are not limited to being only applicable to the preparation of continuous review material profiles with different sections and/or spatial shapes.
  • the "profile” in the present invention is intended to emphasize that the above-mentioned method is suitable for the preparation of various continuous composite materials with fixed cross-sectional characteristics, including cables, regardless of whether the package contains a metal armor layer.
  • step S6 is also included to reuse the removed armor layer as the metal required for S1 welding or extrusion.
  • the energy saving, environmental protection and simplicity of the continuous deformation composite profile preparation process can be further improved.
  • the linear speed at which the prepreg is brought into the tube blank is equal to the linear speed of the metal welded or extruded tube blank, so as to ensure that the prepreg remains relatively stationary with the tube blank since it enters the tube blank .
  • the cross-sectional shape of the material to be formed in step S3 includes one or more of a circle, an ellipse, a gourd shape, and a polygon
  • the spatial shape of the material to be formed includes a straight line, a two-dimensional plane curve , one or more of three-dimensional space curve types.
  • the volume ratio of the continuous longitudinal fibers in the material to be formed is 60%-80% of the total volume of the prepreg. Further preferably, the volume ratio of the continuous longitudinal fibers can be controlled at 75%-80%.
  • the continuous longitudinal fibers include one or more of glass fibers, carbon fibers, boron fibers, aramid fibers, silicon carbide fibers, and basalt fibers.
  • the present invention also provides a cable-type continuous deformation composite material profile, which has a curvilinear space shape and can be coiled, and includes a core material and an armoring layer, and the armoring layer is attached to the core.
  • the outer surface of the material, the core material includes continuous longitudinal fibers and resin, wherein the volume ratio of the continuous longitudinal fibers is 60%-80% of the total volume of the core material, and the armor layer material includes at least A layer of metal. Further preferably, the volume ratio of the continuous longitudinal fibers can be controlled at 75%-80%.
  • the present invention provides a continuous deformation composite material cable that can theoretically extend infinitely.
  • the spatial shape of the cable-type continuous deformation composite material profile includes one or both of a two-dimensional plane curve type and a three-dimensional space curve type
  • the cross-sectional shape of the cable-type continuous deformation composite material profile includes a circular shape One or more of , oval, gourd, and polygon, and the cross-sectional size at different positions is the same or different.
  • the present invention also provides a bare continuous deformation composite material profile, which has a curvilinear space shape and can be coiled, including a core material, the core material
  • the material includes continuous longitudinal fibers and resin, wherein the volume ratio of the continuous longitudinal fibers is 60%-80% of the total volume of the core material. Further preferably, the volume ratio of the continuous longitudinal fibers can be controlled at 75%-80%.
  • the present invention provides a continuous deformation composite material cable that can theoretically extend infinitely.
  • the cable-type continuous deformation composite material profile or the exposed continuous deformation composite material profile has a tensile strength of 1200-4000 MPa, a linear expansion coefficient of 0.6-8 ⁇ 10 -6 1/°C, and an elastic modulus of 120 -240GPa.
  • the manufacturing process of the continuous deformation composite material profile in this scheme is as follows: impregnating continuous longitudinal fibers with resin to obtain a prepreg, continuously welding or extruding metal to obtain a tube blank; and continuously bringing the prepreg into the tube blank, To obtain the material to be deformed, the linear speed at which the prepreg is brought into the tube blank is equal to the linear speed of the metal welded or extruded tube blank, so as to ensure that the prepreg is kept with the tube blank from the time it enters the tube blank Relatively static, at this time, the prepreg is subjected to the first stage of pressure at the mouth of the tube blank. When the prepreg is full, part of the excess resin in the prepreg is squeezed out.
  • Part of the excess resin in the prepreg is left in the tube blank or flows out of the tube blank in a vertical flow to control the volume ratio of continuous longitudinal fibers and resin.
  • the prepreg enters the tube blank; using existing The driving device synchronously drives the prepreg and the tube blank of the material to be deformed.
  • the tube blank is rolled or drawn into a tube with a designed section, and the transverse section of the tube blank is reduced, that is, the shell of the material to be formed is rolled or drawn.
  • the size and shape of the section of the tube blank (referring to the cross section perpendicular to the longitudinal direction of the continuous longitudinal fibers) can be changed, and the shape can be made into a circle or an ellipse or a Gourd-shaped or polygonal, in which the polygon can be an equilateral polygon, a scalene polygon, a convex polygon, or a concave polygon.
  • the tube blank is rolled or drawn one or more times, the tube diameter is reduced , the prepreg in the tube is infiltrated, and the mixed air and excess resin are re-extruded, so that the proportion of the fiber volume in the tube can be increased and further controlled.
  • the tube and the prepreg are relatively static and pulled. Synchronous drive, through the action of mold or other pressure, the space shape of the tube blank can be either linear, or can be transformed into a two-dimensional plane curve such as a plane wave, or a three-dimensional space curve such as a spiral , and because the prepreg and the tube blank are driven synchronously, the cross-section and/or spatial form of the material to be formed can be deformed differently in different sections, forming a continuous whole, but with different cross-sectional shapes or areas Different, different paragraphs have different spatial shapes; then, heating the material to be formed can trigger the prepreg in the tube to complete cross-linking and curing, and obtain the continuous continuous deformation composite material profiles of the same or different spatial shapes; the continuous The deformed composite material profile includes the core material formed by cross-linking and curing of the prepreg and the armor layer formed by the deformation of the tube blank.
  • the armor layer can be disassembled to be suitable for different occasions, or the armor can be retained layer to protect the
  • Continuously deformed composite profiles can be used as overhead conductors for transmission and distribution lines, load-bearing power transmission conductors for electrified railways, catenary conductors, and prestressed cables for civil engineering.
  • the existing pultrusion technology is: the fiber impregnated with resin is extruded and mixed with air and excess resin at the entrance of the cavity mold to make the fiber volume content in the cavity mold meet the design requirements, and then pass through the three heating temperature zones of the cavity mold ( Infiltration, gelation, curing) to complete the production of the product, the technical process of this application is: in the process of drawing the tube blank into a tube, the resin-impregnated fibers are extruded and mixed with the air and excess resin at the entrance of the cavity die.
  • the fiber volume content in the cavity mold meets the design requirements, and at the same time, it ensures that the prepreg and the tube are always relatively static, and the continuous deformation of the profile is realized.
  • the prepreg is subjected to two-stage extrusion to squeeze out the excess resin, leaving only the volume content of the resin required for bonding, which increases the volume ratio of continuous longitudinal fibers and increases the condition of the composite profile in a given cross-sectional area.
  • the key performance indicators such as the strength and winding characteristics of the composite profile are reduced, and the resin content in the profile is reduced, which reduces the price of the product.
  • the tube blank is rolled or drawn to form the tube.
  • the excess resin is slightly displaced.
  • the prepreg as a whole does not move relative to the tube blank.
  • the tube blank is rolled or drawn into a tube to apply pressure to the internal prepreg to avoid resin bubbles and extrude excess resin.
  • the prepreg and the tube blank or the shaped tube are driven synchronously, and after the tube blank is rolled or drawn into the desired spatial shape to form a tube, it is heated to trigger the cross-linking and curing of the prepreg.
  • the prepreg of this solution starts and completes the curing process relatively statically in the shaped tube, and realizes that the composite material profile includes a cross-section.
  • the armoring layer can be retained or removed, and the continuous deformation composite material profiles without armoring layers prepared by this scheme can avoid the contradiction between easy bending and anti-breakage.
  • the metal in this scheme is formed from the tube blank to the shaped tube and then to the armoring layer.
  • the tube blank stage it plays the role of combining the prepreg and initially controlling the volume ratio of continuous longitudinal fibers and resin volume;
  • the prepreg In the process of deforming the tube blank into a shaped tube, it further extrudes the prepreg, completes exhaust, extrusion and other functions; after it is formed into a shaped tube, it is heated to trigger and complete the prepreg in it.
  • cross-linking and curing it acts as a cavity mold for resin curing; and in the final continuous deformation composite material profile, it acts as an armor to protect the internal composite material.
  • Fig. 1 is the preparation process flow chart of continuous fiber composite material profile in the prior art
  • Figure 2 is a schematic diagram of the preparation process flow of the continuous deformation composite material profile in this scheme
  • a preparation method of a continuous deformation composite material profile 2, as shown in Figure 2 includes the following steps performed in sequence:
  • the traction device 3 Synchronously drive the prepreg and the tube blank 8 of the material to be deformed by the traction device 3, change the cross-section of the tube blank 8 or/and deform the space form of the tube blank 8 through the drawing or rolling process, and obtain a continuous
  • the volume ratio of the continuous longitudinal fibers 12 in the material to be formed is 60%-80% of the total volume of the prepreg
  • the tube blank 8 and the prepreg are relatively static at this time
  • the rolling or drawing die 6 changes the size or shape of the section of the tube blank 8, and the section shape can be made into a circle or an ellipse or a gourd or a polygon, and the polygon can be an equilateral polygon or an unequal side Polygons, which can be convex polygons or concave polygons, etc., and the shape of the tube blank 8 in space is deformed by the action of the mold, such as a one-dimensional linear shape, a two-dimensional plane wave shape, or
  • the material to be formed is heated by the heating device 5 to obtain the continuous deformation composite material 2 of the same or different spatial forms, including the core material and the tube blank formed by the cross-linking and curing of the prepreg 8 Armor layer formed by deformation;
  • the above-mentioned composite material profiles are wound into disks by a winding device.
  • a preparation method of a continuous deformation composite material profile 2, as shown in Figure 2 includes the following steps performed in sequence:
  • the metal strip 13 is radially shaped by the guide roller and the longitudinal wrapping die and welded by the continuous welding machine 7 to obtain the tube blank 8;
  • the material to be formed is heated by the heating device 5 to obtain the continuous deformation composite material 2 of the same or different spatial forms, the tensile strength of which is 1200-4000MPa, and the coefficient of linear expansion is 0.6-8 ⁇ 10 ⁇ 6 1/°C, the elastic modulus is 120-240GPa, and the continuous deformation composite material profile 2 includes a core material formed by cross-linking and curing of the prepreg and an armor layer formed by the deformation of the tube blank 8;
  • the dismantling method can be mechanical dismantling method
  • a preparation method of a continuous deformation composite material profile 2, as shown in Figure 2 includes the following steps performed in sequence:
  • the continuous longitudinal fibers 12 are impregnated with resin 9 to obtain a prepreg, wherein the raw material contains 40 parts of continuous longitudinal fibers 12 and 50 parts of resin 9, and the continuous longitudinal fibers 12 include a mixture of silicon carbide fibers and basalt fibers;
  • the material 13 is radially formed by the guide roller and the longitudinal wrapping die and welded by the continuous welding machine 7 to obtain the tube blank 8;
  • the traction device 3 Synchronously drive the prepreg and the tube blank 8 of the material to be deformed by the traction device 3, change the cross-section of the tube blank 8 or/and deform the space form of the tube blank 8 through a drawing or rolling process, and obtain a continuous
  • the volume ratio of the continuous longitudinal fibers 12 in the material to be formed is 75%-80% of the total volume of the prepreg
  • the tube blank 8 and the prepreg are relatively static at this time
  • the cross-sectional size and shape of the tube blank 8 can be changed by rolling or drawing die 6, and the cross-sectional shape can be made into a circle or an ellipse or a gourd or a polygon, wherein the polygon can be an equilateral polygon or an unequal side Polygons, which can be convex polygons or concave polygons, etc., and the shape of the tube blank 8 in space is deformed by the action of the mold, such as a one-dimensional linear shape,
  • the material to be formed is heated by the heating device 5 to obtain the continuous deformation composite material 2 of the same or different spatial forms, the tensile strength of which is 1200-4000MPa, and the coefficient of linear expansion is 0.6-8 ⁇ 10 ⁇ 6 1/°C, the elastic modulus is 120-240GPa, the continuous deformation composite material profile 2 includes the core material formed by cross-linking and curing the prepreg and the armor layer formed by the deformation of the tube blank 8 .
  • the dismantling method may be a mechanical dismantling method.
  • the dismantled armoring layer is reused as the metal 13 required for welding or extrusion in step S1, and the recovery step may include melting after mechanical dismantling, as a metal raw material for extrusion; or after dismantling into a roll, As welded metal strip.
  • the above-mentioned composite material profiles are wound into disks by a winding device.
  • a cable-type continuous deformation composite material profile prepared according to the method of the present solution is characterized in that it has a curved space shape and can be coiled, and includes a core material and an armoring layer, and the armoring layer is attached to the core material.
  • the core material includes continuous longitudinal fibers and resin, wherein the volume ratio of the continuous longitudinal fibers is 60%-80% of the total volume of the core material, and the armor layer material includes at least one layer metal.
  • the cross-sectional shape of the core material includes one or more of a circle, an ellipse, a gourd-shaped, and a polygon, the cross-sectional size at different positions is the same or different, and the curved space shape includes a two-dimensional plane curve and a three-dimensional space. One or both of the curves.
  • a bare continuous deformation composite material profile prepared according to the method of the present solution is characterized in that it has a curved space shape and can be coiled, and includes a core material, and the core material includes continuous longitudinal fibers and resins, wherein the continuous The volume ratio of the longitudinal fibers is 60%-80% of the total volume of the core material.
  • the cross-sectional shape of the core material includes one or more of a circle, an ellipse, a gourd-shaped, and a polygon, the cross-sectional size at different positions is the same or different, and the curved space shape includes a two-dimensional plane curve and a three-dimensional space. One or both of the curves. Its tensile strength is 1200-4000MPa, its linear expansion coefficient is 0.6-8 ⁇ 10 -6 1/°C, and its elastic modulus is 120-240GPa.
  • the continuous longitudinal fibers 12 impregnated with resin 9 are extruded and mixed with air and excess resin 9 at the entrance of the cavity mold under the drive of traction, so that the volume content of the continuous longitudinal fibers 12 in the cavity mold reaches Design requirements, and sequentially infiltrate, gel, and solidify through the three heating temperature zones of the cavity mold, and complete the production of the product through the traction device.
  • the heating and curing device 111 is the cavity mold, because the product must be cured in the cavity mold and move relatively , so the production of continuous deformation composite material profiles that can be deformed in both cross-section and space shape cannot be realized.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

La présente invention concerne un profil de matériau composite à déformation continue exposée, qui comprend une forme d'espace de courbe et peut être enroulé. Le profil comprend un matériau de noyau. Le matériau de noyau comprend une fibre longitudinale continue et une résine. La proportion de la fibre longitudinale continue dans le volume est de 60 % à 80 % du volume total du matériau de noyau ; la forme d'espace de courbe comprend une ou deux parmi une forme de courbe plane bidimensionnelle et une forme de courbe spatiale tridimensionnelle ; la surface de section transversale comprend un ou plusieurs éléments parmi un cercle, un ovale, une forme de calebasse, et un polygone ; les sections transversales à différentes positions sont identiques ou différentes ; la résistance à la traction est de 1 200-4 000 MPa, le coefficient de dilatation linéaire est de 0,6-8×10-61/°C, et le module d'élasticité est de 120-240 Gpa. L'espace à partir du profil de matériau composite à déformation continue est une forme de courbe d'espace tridimensionnel, et en théorie, un câble de matériau composite à déformation continue peut être étendu de façon non limitée. De plus, la disponibilité du profil de matériau composite à déformation continue peut garantir que les exigences de conception d'ingénierie de valeur de matériau composite nécessitant des exigences de performance globales peuvent être satisfaites.
PCT/CN2021/101530 2020-07-22 2021-06-22 Profil de matériau composite à déformation continue exposée Ceased WO2022017106A1 (fr)

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CN202010710421.9A CN111805944B (zh) 2020-07-22 2020-07-22 一种连续形变复合材料型材及其制备方法

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PCT/CN2021/101499 Ceased WO2022017105A1 (fr) 2020-07-22 2021-06-22 Préimprégné renforcé par des fibres à base de résine linéaire continue autoportante
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CN111805944B (zh) * 2020-07-22 2021-05-07 江苏易鼎复合技术有限公司 一种连续形变复合材料型材及其制备方法
CN113715367B (zh) * 2021-07-16 2022-08-09 北京科技大学 一种管梁零件制备工艺及管梁零件
CN115614408A (zh) * 2022-10-31 2023-01-17 江苏易鼎复合技术有限公司 一种金属包树脂基连续纤维复合材料弹簧，及其制备方法、用途

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CN113370559A (zh) 2021-09-10
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