CN111531914A - Preparation technology of carbon fiber reinforced composite material - Google Patents
Preparation technology of carbon fiber reinforced composite material Download PDFInfo
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- CN111531914A CN111531914A CN202010389062.1A CN202010389062A CN111531914A CN 111531914 A CN111531914 A CN 111531914A CN 202010389062 A CN202010389062 A CN 202010389062A CN 111531914 A CN111531914 A CN 111531914A
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- carbon fiber
- composite material
- fiber reinforced
- reinforced composite
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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
- B29C70/04—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
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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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
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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
- B29C70/04—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation technology of a carbon fiber reinforced composite material, which comprises the following steps: step 1: polishing the inner cavity of the mold; step 2: coating a release agent; and step 3: laying carbon fiber reinforced yarns or carbon fiber cloth; and 4, step 4: laying glass fiber cloth; and 5: introducing adhesive glue in vacuum or hand paste; step 6: curing the adhesive; and 7: arranging an embedded part on the back of the product through adhesive glue; and 8: constructing a foaming structure on the back of the product in a 3D printing mode; and step 9: and demolding and taking the workpiece after curing. The method is different from a mode of completely depending on die processing by a carbon fiber reinforced composite material preparation process technology, is suitable for the field of small structure forming processing with high weight control requirements and complex load, can be combined with a 3D printing technology to stack multiple layers of materials, realizes layer-by-layer stacking, improves the production efficiency, improves the cost performance of the composite material, and reduces the manufacturing cost of the composite material.
Description
Technical Field
The invention relates to the technical field of composite material processing, in particular to a preparation technology of a carbon fiber reinforced composite material.
Background
The composite material product is a product prepared by combining two or more than two materials with different properties through a physical or chemical method, the matrix materials of the composite material are divided into two major types of metal and nonmetal, and can be classified according to different matrix materials, including glass fiber reinforced plastic products, carbon fiber products, basalt fiber products and the like, and the composite material product can replace steel in some fields because of the advantages of light weight, hardness, high mechanical strength, less recycling, corrosion resistance and the like, and is widely used for manufacturing machine parts, automobile shells, ship shells and the like.
In the production process of carbon fiber products, multiple materials are required to be combined with each other, and the carbon fiber products are required to be combined with a mold under the condition of ensuring product forming, and the actual mold is only suitable for large-batch production and manufacturing, while modern vehicles, mechanical equipment, home decoration and various customized products are developed towards the characteristics of high grade, multiple varieties, individuation and small batch, so that the method for simply utilizing the mold to produce the carbon fiber products is poor in applicability, and along with the development of science and technology, the 3D printing technology is developed more and more quickly, in the material production, the efficiency of forming foaming materials by the existing 3D printing technology is low, the foaming materials cannot be suitable for batch manufacturing of large-scale parts, and the carbon fiber products still have great application potential in forming small-scale structures with high weight control requirements and complex loads.
In addition, in the existing process technology, when a mold is simply used for producing a carbon fiber composite product, the production is influenced by the type of the composite material, when the mold is simply used for processing, operations such as mold closing and mold opening are needed, the efficiency is low, particularly, the installation process of embedded parts in the composite material completely needs to be operated manually, the processing cost is high, the cost performance requirement of the composite material production cannot be guaranteed, and the economical efficiency is poor.
Disclosure of Invention
The invention aims to provide a preparation technology of a carbon fiber reinforced composite material, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation technology of a carbon fiber reinforced composite material comprises the following steps:
step 1: polishing the inner cavity of the mold;
step 2: coating a release agent;
and step 3: laying carbon fiber reinforced yarns or carbon fiber cloth;
and 4, step 4: laying glass fiber cloth;
and 5: introducing adhesive glue in vacuum or hand paste;
step 6: curing the adhesive;
and 7: arranging an embedded part on the back of the product through adhesive glue;
and 8: constructing a foaming structure on the back of the product in a 3D printing mode;
and step 9: and demolding and taking the workpiece after curing.
The carbon fiber reinforced composite material comprises a foaming enhancement layer, wherein a carbon fiber reinforced panel layer is installed at the top end of the foaming enhancement layer, an embedded part is installed at the top end of the carbon fiber reinforced panel layer, the bottom end of the embedded part is located inside the carbon fiber reinforced panel layer, and a foaming reinforcement rib is installed above the embedded part.
Preferably, the top end of the foam enhancement layer is provided with a recessed groove body, and the carbon fiber enhancement panel layer, the embedded part and the foam enhancement rib are all installed in the recessed groove body.
Preferably, said steps 3, 4 and 5 constitute a carbon fibre reinforced panel.
Preferably, the embedded part is provided with a conducting opening, the opening is internally provided with an installation sheet, and the installation sheet is provided with an assembly hole.
Preferably, at least two layers of glass fiber cloth are paved in the step 4.
Preferably, in the step 9, the composite material product is taken out of the composite material forming mold, and the demolded composite material product is trimmed and polished to complete the process.
Preferably, in the step 6, the adhesive is unsaturated resin, and the curing time is about 1 to 4 hours.
Preferably, in the step 6, the adhesive glue is epoxy resin, and the curing time is 12-24 hours.
Preferably, the polishing of the inner cavity of the mold in the step 1 is to polish the composite material forming mold by fine sand and perform waxing treatment.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the preparation technology of the carbon fiber reinforced composite material, the inner cavity of the mold is polished and the surface of the inner cavity is waxed, so that the degree of finish of the inner cavity of the mold can be changed, the surface quality of a subsequently processed product is improved, and the surface of a manufactured part is smooth and has high precision.
2. According to the preparation technology of the carbon fiber reinforced composite material, the carbon fiber reinforced yarns are used for improving the performance of a composite material product by means of the material performance of carbon fibers, and at least two layers of glass fiber cloth are laid, so that the upper direction and the lower direction of the multiple layers of glass fiber cloth are stacked to change the layer thickness and the performance of the reinforced material caused by the glass fiber cloth.
3. The preparation technology of the carbon fiber reinforced composite material has the characteristics of low cost, high processing efficiency and lightness by constructing a foaming mechanism, has certain material toughness, can be used for facilitating the mechanized and automatic installation of embedded parts by means of an external mechanical arm by using a 3D printing mode, improves the installation efficiency and the processing precision, can generate a three-dimensional solid product by overlapping and solidifying the fused and coated forming foaming material through continuous physical layers under the drive of digital control by means of the characteristic of 3D grinding in the prior art according to layer information, is different from processing methods such as injection molding processing, simple mold processing and the like, can get rid of the requirements of some equipment by 3D printing, can meet the requirements of complex structures by means of the motion of the mechanical arm, can construct the foaming material in any shape, and is different from completely depending on mold processing, the mold has the problems of complex structure and high manufacturing cost, improves the cost performance of the composite material, and reduces the manufacturing cost of the composite material.
4. The preparation technology of the carbon fiber reinforced composite material comprises the steps of forming a carbon fiber reinforced filament and glass fiber cloth through a carbon fiber reinforced panel layer, using the carbon fiber reinforced panel layer as a main performance part of the composite material, fixedly installing an embedded part by means of adhesive glue, and actually stacking and laying the embedded part by a 3D printing method through a foaming reinforced layer, wherein the carbon fiber reinforced panel layer is used as a bottom base component of the carbon fiber reinforced panel layer.
5. This carbon fiber reinforced composite preparation technique has seted up the opening on the built-in fitting surface through the installation piece, and when passing the built-in fitting passageway as external equipment, the installation piece contacted with external equipment, sets up the pilot hole on the installation piece, can be favorable to carrying out fixed mounting to whole combined material goods with the part of external equipment, if the strengthening rib passes through fixed connection such as U type bolt.
Drawings
FIG. 1 is a schematic structural view of a finished product of the carbon fiber reinforced composite material of the present invention;
FIG. 2 is a side cross-sectional view of the embedment of FIG. 1 of the present invention.
In the figure: 1. embedding parts; 2. foaming reinforcing ribs; 3. a foamed reinforcement layer; 4. a carbon fiber reinforced face sheet layer; 5. mounting a sheet; 6. and (7) assembling holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The preparation technology of the carbon fiber reinforced composite material comprises the following steps:
step 1: polishing the inner cavity of the mold, and changing the finish degree of the inner cavity of the mold so as to improve the surface quality of a subsequently processed product, thereby ensuring that the surface of the manufactured part is smooth and has high precision;
step 2: the release agent is coated evenly and repeatedly, so that the subsequent separation operation of the die and the product is convenient to carry out;
and step 3: the carbon fiber reinforced filament or the carbon fiber cloth is laid, the carbon fiber reinforced filament and the carbon fiber cloth are made of carbon fiber materials, the carbon fiber reinforced filament has high fracture toughness, heat resistance, fatigue resistance and creep resistance, the tensile strength and the elastic modulus are higher than those of common carbon materials, and the carbon fiber cloth is of a blocky continuous structure and is more convenient to lay in a mold;
and 4, step 4: laying glass fiber cloth;
and 5: the method comprises the following steps of (1) introducing bonding glue in a vacuum or hand pasting manner, wherein the bonding glue is uniformly introduced in a vacuumizing manner, and the hand pasting manner is uniformly coated manually, so that the bonding glue is uniformly covered on the glass fiber cloth;
step 6: curing the adhesive;
and 7: arranging an embedded part on the back of the product through bonding glue, wherein the bottom end of the embedded part is positioned in the bonding glue for fixed installation;
and 8: the method is characterized in that a foaming structure is constructed on the back of a product in a 3D printing mode, the foaming mechanism is formed by stacking foaming materials actually, and the method has the characteristics of low cost, high processing efficiency and lightness, and a 3D printing mode is used, the characteristics of 3D grinding in the prior art can be used, parts of a mechanical arm can be provided, the fused and coated forming foaming material can be stacked and solidified through continuous physical layers under the drive of digital control according to layer information, materials are added layer by layer to generate a three-dimensional solid product, the method is different from processing methods such as injection molding processing, pure mold processing and the like, the 3D printing can get rid of the requirements of some devices, embedded parts can be installed by means of the mechanical arm, the mechanical arm is used for driving the movement at any position when the 3D spraying foaming material, the method can meet the complex structural requirements of the product, the foaming material can be structured in any shape, and is different from the, the problems of complex mold structure and high mold manufacturing cost are solved, the cost performance of the composite material is improved, and the manufacturing cost of the composite material is reduced;
and step 9: and demolding and taking the solidified material, which is different from the existing mold processing, and only the mold is used for processing the bottom end of the finished material without mold opening operation.
Specifically, at least two layers of glass fiber cloth are laid in the step 4, and the glass fiber cloth layers can be stacked up and down in actual production, so that the layer thickness caused by the glass fiber cloth is changed, and the material performance is enhanced.
Further, in step 9, the composite material product is taken out of the composite material forming die, the edge of the demolded composite material product is cut and polished, and the demolded composite material product is subjected to shape improvement.
Further, in step 6, the adhesive is unsaturated resin, the curing time is about 1-4 hours, the unsaturated resin is low in price and easy to cure, a certain interval exists in the actual curing, the interval is related to the size of the part, the amount of the added curing agent, the temperature and the like, and in a relative sense, the smaller the part is, the thinner the material thickness is, the larger the proportion of the added curing agent is, and the faster the curing is.
Furthermore, in the step 1, polishing the inner cavity of the mold is to polish the composite material forming mold by fine sand so as to meet the polishing requirement, and to perform waxing treatment for 8 times, paraffin can generate the effect of a release agent so as to change the smoothness of the inner cavity and facilitate the improvement of the surface quality of the manufactured composite material finished product.
Example 2
The preparation technology of the carbon fiber reinforced composite material in the embodiment is basically the same as the preparation technology of the carbon fiber reinforced composite material in the embodiment 1, and the difference is that: in the step 6, the bonding glue is epoxy resin, and the curing time is 12-24 hours.
The price of the epoxy resin is higher than that of the unsaturated resin, the amino curing agent participates in the curing reaction, the performance of the final product is very high as that of the curing agent, but generally, the hardness and the strength of the final cured product of the epoxy resin are higher than those of the cured product of the unsaturated resin, the curing time is actually 12-24 hours, the time interval is related to the size of a part, the amount of the added curing agent, the temperature and the like, and in a relative sense, the smaller the part is, the thinner the material thickness is, the larger the proportion of the added curing agent is, and the faster the curing is.
Example 3
Referring to fig. 1 and 2, a carbon fiber reinforced composite material based on a carbon fiber reinforced composite material preparation technology comprises a foam enhancement layer 3, during actual production, the foam enhancement layer 3 is used as a base of the material, a carbon fiber reinforced panel layer 4 is installed at the top end of the foam enhancement layer 3 and is used as a main performance part of the carbon fiber reinforced composite material, an embedded part 1 is installed at the top end of the carbon fiber reinforced panel layer 4 and is a metal component of a bridge structure, the embedded part has embedded legs, the embedded legs at the bottom end of the embedded part 1 are located inside the carbon fiber reinforced panel layer 4 and are fixed with each other, a foam enhancement rib 2 is installed above the embedded part 1 and can act on the carbon fiber reinforced panel layer to perform constraint enhancement on the embedded part and serve as a framework structure to realize the enhancement on mechanical properties, and the foam enhancement layer 3 and the foam enhancement rib 2 are combined with a 3D printing technology, the carbon fiber reinforced composite material can be widely applied to the fields of automobile manufacturing, mechanical equipment, rail transit, home decoration, large billboards and the like.
Specifically, the top of foaming enhancement layer 3 is provided with recessed cell body, combines the carbon fiber reinforced composite preparation technique among embodiment 1, and foaming enhancement layer 3 can be piled up the expanded material by 3D printing apparatus and form in specific mould, and carbon fiber reinforced panel layer 4, built-in fitting 1 and foaming reinforcing bar 2 all install in recessed cell body, and recessed cell body can form a restraint this moment, and the multilayer material of being convenient for is piled up and is made the use for the whole top of this material is comparatively level and smooth.
Further, in the carbon fiber reinforced composite material preparation technology of embodiment 1, step 3, step 4, and step 5 constitute a carbon fiber reinforced panel layer 4, and the embedded part 1 is installed by the adhesive and the foam reinforcement layer 3, so that the embedded foot portion at the bottom end of the embedded part 1 is fixed on the carbon fiber reinforced panel layer 4.
Furthermore, set up the opening that switches on the built-in fitting 1, the part on the external equipment passes whole built-in fitting 1 through the passageway that the opening formed, and open-ended internally mounted has installation piece 5, installation piece 5 exists four at least, be provided with the clearance each other, the part on the external equipment, if the strengthening rib is in between the installation piece 5, be provided with pilot hole 6 on the installation piece 5, pass on pilot hole 6 through fixed part such as U type bolt, fix spacingly to parts such as strengthening rib, do benefit to and carry out fixed mounting to whole combined material goods.
It is to be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A carbon fiber reinforced composite material preparation technology is characterized in that: the method comprises the following steps:
step 1: polishing the inner cavity of the mold;
step 2: coating a release agent;
and step 3: laying carbon fiber reinforced yarns or carbon fiber cloth;
and 4, step 4: laying glass fiber cloth;
and 5: introducing adhesive glue in vacuum or hand paste;
step 6: curing the adhesive;
and 7: arranging an embedded part on the back of the product through adhesive glue;
and 8: constructing a foaming structure on the back of the product in a 3D printing mode;
and step 9: and demolding and taking the workpiece after curing.
2. The carbon fiber reinforced composite material according to claim 1, wherein: the foaming reinforcing plate comprises a foaming reinforcing layer (3), wherein a carbon fiber reinforcing panel layer (4) is installed at the top end of the foaming reinforcing layer (3), an embedded part (1) is installed at the top end of the carbon fiber reinforcing panel layer (4), the bottom end of the embedded part (1) is located inside the carbon fiber reinforcing panel layer (4), and foaming reinforcing ribs (2) are installed above the embedded part (1).
3. The carbon fiber reinforced composite material preparation technology according to claim 2, characterized in that: the top end of the foaming enhancement layer (3) is provided with a recessed groove body, and the carbon fiber reinforced panel layer (4), the embedded part (1) and the foaming enhancement ribs (2) are all installed in the recessed groove body.
4. The carbon fiber reinforced composite material preparation technology according to claim 1, characterized in that: the step 3, the step 4 and the step 5 constitute a carbon fiber reinforced panel layer (4).
5. The carbon fiber reinforced composite material preparation technology according to claim 2, characterized in that: the embedded part (15) is provided with a communicated opening, the opening is internally provided with an installation sheet (6), and the installation sheet (6) is provided with an assembly hole (6).
6. The carbon fiber reinforced composite material preparation technology according to claim 1, characterized in that: and at least two layers of glass fiber cloth are paved in the step 4.
7. The carbon fiber reinforced composite material preparation technology according to claim 1, characterized in that: and 9, taking out the composite material product from the composite material forming die, and trimming and polishing the demolded composite material product to finish the process.
8. The carbon fiber reinforced composite material preparation technology according to claim 1, characterized in that: in the step 6, the bonding glue is unsaturated resin, and the curing time is about 1-4 hours, so that the composite material product is prepared.
9. The carbon fiber reinforced composite material preparation technology according to claim 1, characterized in that: in the step 6, the bonding glue is epoxy resin, and the curing time is 12-24 hours.
10. The carbon fiber reinforced composite material preparation technology according to claim 1, characterized in that: and in the step 1, polishing the inner cavity of the mold is to polish the composite material forming mold by fine sand and perform waxing treatment.
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| CN202010389062.1A CN111531914A (en) | 2020-05-09 | 2020-05-09 | Preparation technology of carbon fiber reinforced composite material |
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| CN202010389062.1A CN111531914A (en) | 2020-05-09 | 2020-05-09 | Preparation technology of carbon fiber reinforced composite material |
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| CN115095447A (en) * | 2022-06-21 | 2022-09-23 | 西安英利科电气科技有限公司 | A composite material shell embedded in a pendant and a preparation method thereof |
| CN115180063A (en) * | 2022-06-30 | 2022-10-14 | 中国舰船研究设计中心 | Carbon fiber composite sandwich structure cap-shaped rib and forming process method thereof |
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Application publication date: 20200814 |