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CN108819283A - A kind of carbon/carbon compound material mould pressing method - Google Patents

A kind of carbon/carbon compound material mould pressing method Download PDF

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Publication number
CN108819283A
CN108819283A CN201810430343.XA CN201810430343A CN108819283A CN 108819283 A CN108819283 A CN 108819283A CN 201810430343 A CN201810430343 A CN 201810430343A CN 108819283 A CN108819283 A CN 108819283A
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carbon
layer
carbon fiber
impregnated
composite material
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卢杰
王亚安
朱继泉
李端
韩文静
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Xian Aviation Brake Technology Co Ltd
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Xian Aviation Brake Technology Co Ltd
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    • 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
    • B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
    • B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
    • B29C70/025—Combinations of fibrous reinforcement and non-fibrous material with particular filler
    • 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
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • 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
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • 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
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
    • B29C70/205—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration
    • 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
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/5252—Fibers having a specific pre-form
    • C04B2235/5256—Two-dimensional, e.g. woven structures

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The invention belongs to carbon/carbon compound material preparation technical fields, are related to a kind of carbon/carbon compound material mould pressing method.The present invention combines to form one group using impregnation carbon fiber-free weft fabric layer, carbon clay layer, impregnation carbon fibre web plies, carbon clay layer, it repeats to be stacked to required thickness by combination of the above mode, then carry out hot-press solidifying is vacuumized after being punctured using carbon fiber rod, then carbonization prepares carbon/carbon compound material.Mould pressing method of the invention uses long fibre net plies as enhancing structure, and the structural strength for suppressing workpiece is higher；Using carbon clay, as filling phase, the densification degree of molding workpiece can be improved in the present invention, and density caused by carbon yield is low after reduction resin carbonation reduces problem；The present invention punctures each net tire, laminated cloth layer using curing carbon fiber stick, forms Z-direction enhancing structure, and each layer bond strength can be improved, and reduces lamination problem.

Description

一种碳/碳复合材料模压方法A kind of carbon/carbon composite material molding method

技术领域technical field

本发明属于碳/碳复合材料制备技术领域，涉及一种碳/碳复合材料模压方法。The invention belongs to the technical field of carbon/carbon composite material preparation and relates to a carbon/carbon composite material molding method.

背景技术Background technique

目前的碳/碳复合材料模压技术，采用乱短纤维与树脂(沥青等)进行混合后，在模具内进行压制固化、碳化等工序制备成碳/碳复合材料工件。该方法具有成本低、生产效率高的优点。但由于模压法采用的是短纤作为增强体，导致结构强度较低。另外由于模压过程缺少Z向连接纤维，压制工件的容易出现剥层问题。该方法在高温碳化处理后，由于树脂的残炭率低，导致工件压制后密度很低，还需进一步致密化处理。The current carbon/carbon composite material molding technology uses random short fibers to mix with resin (asphalt, etc.), and then carries out compression curing, carbonization and other processes in the mold to prepare carbon/carbon composite material workpieces. The method has the advantages of low cost and high production efficiency. However, because the molding method uses short fibers as reinforcements, the structural strength is low. In addition, due to the lack of Z-direction connecting fibers in the molding process, the problem of delamination of the pressed workpiece is prone to occur. In this method, after the high-temperature carbonization treatment, due to the low carbon residue rate of the resin, the density of the workpiece after pressing is very low, and further densification treatment is required.

发明内容Contents of the invention

本发明的目的是：针对现碳/碳复合材料模压技术存在的，增强相为短纤维导致结构强度低、缺少Z向纤维，导致剥层、纯树脂填料导致的残炭率低，致密化程度低的问题，设计一种新型模压方法。The purpose of the present invention is: for existing carbon/carbon composite material molding technology, the reinforcing phase is short fiber, resulting in low structural strength, lack of Z-direction fiber, resulting in delamination, low carbon residue rate caused by pure resin filler, and densification degree Low problem, design a new molding method.

本发明的技术方案是：一种碳/碳复合材料模压方法，采用浸胶碳纤维无纬布层、碳素胶泥层、浸胶碳纤维网胎层、碳素胶泥层组合形成一组，按以上组合方式重复叠层至所需厚度，然后采用碳纤维棒进行穿刺后抽真空进行热压固化，然后碳化制备碳/碳复合材料。The technical solution of the present invention is: a carbon/carbon composite material molding method, using a combination of impregnated carbon fiber non-weft cloth layer, carbon mastic layer, impregnated carbon fiber mesh layer, and carbon mastic layer to form a group, according to the above combination Repeatedly laminated to the required thickness, and then use carbon fiber rods to puncture, vacuumize, heat-press and solidify, and then carbonize to prepare carbon/carbon composite materials.

浸胶碳纤维无纬布是在无纬布碳纤维表面浸渍一层树脂胶料，确保模压过程中碳纤维与基体结合。The impregnated carbon fiber non-woven fabric is impregnated with a layer of resin on the surface of the non-woven carbon fiber to ensure that the carbon fiber is combined with the matrix during the molding process.

碳素胶泥层采用碳素微粒与树脂混合，并进行真空炼泥处理，然后压成胶泥片，与浸胶碳纤维无纬布和浸胶碳纤维网胎层模压过程中利用胶泥的塑性变形特征压入浸胶碳纤维网胎层和浸胶碳纤维无纬布层的碳纤维中间，起到填充致密化作用。The carbon cement layer is mixed with carbon particles and resin, and vacuum mud is processed, and then pressed into a cement sheet, which is pressed into the plastic deformation characteristics of the cement during the molding process with the impregnated carbon fiber non-weft cloth and the impregnated carbon fiber mesh layer. The carbon fiber between the dipped carbon fiber mesh layer and the dipped carbon fiber non-weft cloth layer plays a role of filling and densification.

浸胶碳纤维网胎层为乱短纤维纤维组成，实现摩擦过程的均匀性。The impregnated carbon fiber mesh layer is composed of random short fibers to achieve uniformity in the friction process.

碳纤维棒为采用单向碳纤维浸胶后固化形成的硬质棒状结构，用以穿刺各浸胶碳纤维无纬布层、碳素胶泥层、浸胶碳纤维网胎层、碳素胶泥层，以形成Z向增强纤维，提高模压件的结构强度。The carbon fiber rod is a hard rod-shaped structure formed by unidirectional carbon fiber impregnation and curing, and is used to pierce each impregnated carbon fiber non-weft cloth layer, carbon mastic layer, impregnated carbon fiber mesh tire layer, and carbon mastic layer to form Z. To strengthen the fiber, improve the structural strength of the molded parts.

本发明的有益效果：本发明的模压方法，采用了长纤维网胎层作为增强结构，压制出工件的结构强度更高；本发明采用碳素胶泥作为填充相，可提高模压工件的致密化程度，胶泥中的碳素微粒可实现碳化后100％的残炭率，减少树脂碳化后残炭率低导致的密度降低问题；本发明采用固化碳纤维棒穿刺各网胎、无纬布层，形成Z向增强结构，可提高各层结合强度，减少分层问题。Beneficial effects of the present invention: the molding method of the present invention adopts the long-fiber mesh layer as the reinforcing structure, and the structural strength of the pressed workpiece is higher; the present invention uses carbon cement as the filling phase, which can increase the densification degree of the molded workpiece , the carbon particles in the cement can achieve a 100% carbon residue rate after carbonization, reducing the density reduction problem caused by the low carbon residue rate after carbonization of the resin; the invention uses solidified carbon fiber rods to puncture each mesh tire and no weft cloth layer to form Z The directionally reinforced structure can improve the bonding strength of each layer and reduce the problem of delamination.

具体实施方式Detailed ways

下面详细说明本发明的具体实施方式。Specific embodiments of the present invention will be described in detail below.

本发明一种碳/碳复合材料模压方法，采用浸胶碳纤维无纬布层、碳素胶泥层、浸胶碳纤维网胎层、碳素胶泥层组合形成一组，按以上组合方式重复叠层至所需厚度，然后采用碳纤维棒进行穿刺后抽真空进行热压固化，然后碳化制备碳/碳复合材料。A carbon/carbon composite material molding method according to the present invention comprises a combination of impregnated carbon fiber non-weft cloth layer, carbon mastic layer, impregnated carbon fiber mesh layer, and carbon mastic layer to form a group, and repeats lamination according to the above combination method to The required thickness is then punctured with a carbon fiber rod, then vacuumized for hot-press curing, and then carbonized to prepare a carbon/carbon composite material.

浸胶碳纤维无纬布是在无纬布碳纤维表面浸渍一层树脂胶料，确保模压过程中碳纤维与基体结合。无纬布层由于采用长碳纤维，可以起到良好的结构增强作用。The impregnated carbon fiber non-woven fabric is impregnated with a layer of resin on the surface of the non-woven carbon fiber to ensure that the carbon fiber is combined with the matrix during the molding process. Due to the use of long carbon fibers in the non-weft layer, it can play a good role in structural reinforcement.

碳素胶泥层采用碳素微粒与树脂混合，并进行真空炼泥处理，然后压成胶泥片，与浸胶碳纤维无纬布和浸胶碳纤维网胎层模压过程中利用胶泥的塑性变形特征压入浸胶碳纤维网胎层和浸胶碳纤维无纬布层的碳纤维中间，起到填充致密化作用。另外由于胶泥中含有大量碳素微粒，可以保证在模压、碳化后较高的残炭率，提高最终产品的密度。The carbon cement layer is mixed with carbon particles and resin, and vacuum mud is processed, and then pressed into a cement sheet, which is pressed into the plastic deformation characteristics of the cement during the molding process with the impregnated carbon fiber non-weft cloth and the impregnated carbon fiber mesh layer. The carbon fiber between the dipped carbon fiber mesh layer and the dipped carbon fiber non-weft cloth layer plays a role of filling and densification. In addition, because the cement contains a large amount of carbon particles, it can ensure a high carbon residue rate after molding and carbonization, and increase the density of the final product.

浸胶碳纤维网胎层为乱短纤维纤维组成，由于纤维排布杂乱，可以实现摩擦过程的均匀性。The impregnated carbon fiber mesh layer is composed of random short fibers, and the uniformity of the friction process can be achieved due to the disordered arrangement of the fibers.

碳纤维棒为采用单向碳纤维浸胶后固化形成的硬质棒状结构，用以穿刺各浸胶碳纤维无纬布层、碳素胶泥层、浸胶碳纤维网胎层、碳素胶泥层，以形成Z向增强纤维，提高模压件的结构强度。The carbon fiber rod is a hard rod-shaped structure formed by unidirectional carbon fiber impregnation and curing, and is used to pierce each impregnated carbon fiber non-weft cloth layer, carbon mastic layer, impregnated carbon fiber mesh tire layer, and carbon mastic layer to form Z. To strengthen the fiber, improve the structural strength of the molded parts.

Claims (5)

1.一种碳/碳复合材料模压方法，其特征为所述方法包括以下步骤：采用浸胶碳纤维无纬布层、碳素胶泥层、浸胶碳纤维网胎层、碳素胶泥层组合形成一组，按以上组合方式重复叠层至所需厚度，然后采用碳纤维棒进行穿刺后抽真空进行热压固化，然后碳化制备碳碳复合材料。1. A carbon/carbon composite material molding method is characterized in that said method comprises the following steps: adopting the combination of impregnated carbon fiber non-weft cloth layer, carbon mastic layer, impregnated carbon fiber net tire layer, carbon mastic layer to form a Group, repeat the stacking to the required thickness according to the above combination method, and then use carbon fiber rods to puncture, vacuumize, heat-press and solidify, and then carbonize to prepare carbon-carbon composite materials. 2.根据权利要求1所述的所述碳/碳复合材料模压方法，其特征为：所述浸胶碳纤维无纬布是在无纬布碳纤维表面浸渍一层树脂胶料，确保模压过程中碳纤维与基体结合。2. The carbon/carbon composite material molding method according to claim 1, characterized in that: the impregnated carbon fiber non-weft cloth is impregnated with a layer of resin compound on the surface of the non-weft cloth carbon fiber to ensure that the carbon fiber during the molding process Combine with the matrix. 3.根据权利要求1所述的所述碳/碳复合材料模压方法，其特征为：所述碳素胶泥层采用碳素微粒与树脂混合，并进行真空炼泥处理，然后压成胶泥片，在模压利用胶泥中的塑性变形特征压入浸胶碳纤维网胎层和浸胶碳纤维无纬布层的碳纤维中间，起到填充致密化作用。3. The carbon/carbon composite material molding method according to claim 1, characterized in that: the carbon cement layer is mixed with carbon particles and resin, and subjected to vacuum mud refining treatment, and then pressed into cement sheets, In the molding process, the plastic deformation characteristics in the cement are used to press into the middle of the carbon fiber of the impregnated carbon fiber mesh layer and the impregnated carbon fiber non-weft cloth layer, which plays a role in filling and densification. 4.根据权利要求1所述的所述碳/碳复合材料模压方法，其特征为：所述浸胶碳纤维网胎层为乱短纤维纤维组成，实现摩擦过程的均匀性。4. The carbon/carbon composite material molding method according to claim 1, characterized in that: the rubber-impregnated carbon fiber mesh layer is composed of random short fibers, so as to realize the uniformity of the friction process. 5.根据权利要求1所述的所述碳/碳复合材料模压方法，其特征为：所述碳纤维棒为采用单向碳纤维浸胶后固化形成的硬质棒状结构，用以穿刺各浸胶碳纤维无纬布层、碳素胶泥层、浸胶碳纤维网胎层、碳素胶泥层，以形成Z向增强纤维，提高模压件的结构强度。5. The carbon/carbon composite material molding method according to claim 1, characterized in that: the carbon fiber rod is a hard rod-shaped structure formed by unidirectional carbon fiber impregnation and solidification, and is used to puncture each impregnated carbon fiber No weft cloth layer, carbon cement layer, impregnated carbon fiber mesh layer, carbon cement layer to form Z-direction reinforcing fibers and improve the structural strength of molded parts.
CN201810430343.XA 2018-05-07 2018-05-07 A kind of carbon/carbon compound material mould pressing method Pending CN108819283A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111039691A (en) * 2020-01-13 2020-04-21 陕西美兰德炭素有限责任公司 Preparation method of carbon-carbon composite material plate
CN120191088A (en) * 2025-05-26 2025-06-24 浙江德鸿碳纤维复合材料有限公司 A carbon/carbon-silicon carbide composite material and preparation method thereof

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Application publication date: 20181116