CN108372666B - Carbon fiber pultrusion profile embedded with metal plate and manufacturing process - Google Patents
Carbon fiber pultrusion profile embedded with metal plate and manufacturing process Download PDFInfo
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- CN108372666B CN108372666B CN201810159765.8A CN201810159765A CN108372666B CN 108372666 B CN108372666 B CN 108372666B CN 201810159765 A CN201810159765 A CN 201810159765A CN 108372666 B CN108372666 B CN 108372666B
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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
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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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
- B29C69/007—Lining or sheathing in combination with forming the article to be lined
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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
- B29C70/36—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 impregnating by casting, e.g. vacuum casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
- B62D29/005—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material preformed metal and synthetic material elements being joined together, e.g. by adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Combustion & Propulsion (AREA)
- Architecture (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
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- Oral & Maxillofacial Surgery (AREA)
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- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention provides a carbon fiber pultrusion profile embedded with a metal plate and a manufacturing process thereof, wherein the process comprises the following steps: s10, compounding the carbon fibers with the resin adhesive, and performing prefabrication and molding; s20, performing primary curing on the prefabricated profile; s30, paving a metal plate on the surface of the profile after primary curing, and adding a resin layer on the metal plate, wherein the area of the resin layer is larger than that of the metal plate; and S40, carrying out secondary curing, and completely curing the resin glue and the resin layer to obtain the carbon fiber pultrusion section with the embedded metal plate. The binding force between the metal plate and the prefabricated section is improved, and the mechanical properties of the final section are enhanced, such as the shearing force and the impact resistance of the final section are improved. The resin layer increases the binding force between the metal plate and the carbon fiber prefabricated section bar, and simultaneously improves the weather resistance of the metal plate.
Description
Technical Field
The invention relates to a pultruded profile, in particular to a carbon fiber pultruded profile embedded with a metal plate and a manufacturing process thereof.
Background
Along with the development of the technology, the proportion of the composite material in the automobile material is larger and larger, compared with the traditional alloy material, the composite material is convenient to produce, strong in designability and corrosion-resistant, and can greatly reduce the weight of an automobile body and reduce the consumption of oil on the premise of ensuring the mechanical property. The existing composite material is usually a composite product of an organic polymer material and an inorganic fiber material, and although the mechanical property of the material is not inferior to that of a metal alloy, the material cannot meet the safety requirement of vehicles when being used in vehicles such as passenger cars and the like.
Disclosure of Invention
In view of the above, the present invention provides a carbon fiber pultruded profile embedded with a metal plate and a manufacturing process thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
a manufacturing process of a carbon fiber pultrusion profile with an embedded metal plate comprises the following steps:
s10, compounding the carbon fibers with the resin adhesive, and performing prefabrication and molding;
s20, performing primary curing on the prefabricated profile;
s30, paving a metal plate on the surface of the profile after primary curing, and adding a resin layer on the metal plate, wherein the area of the resin layer is larger than that of the metal plate;
and S40, carrying out secondary curing, and completely curing the resin glue and the resin layer to obtain the carbon fiber pultrusion section with the embedded metal plate.
Further, the step S10 includes:
s11, adding carbon fibers into the mold, sealing and vacuumizing;
s12, preheating the mold and the resin adhesive, and filling the resin adhesive into the mold under a vacuum condition;
and S13, heating and curing, and obtaining the prefabricated forming section when the curing degree is less than a first preset value.
Further, the resin adhesive comprises the following components: liquid bisphenol A diglycidyl ether, acrylonitrile-isoprene copolymer and a curing agent.
Further, in the step S20, the curing degree of the primary curing is 70 to 85%.
Further, in the step S40, the secondary curing includes: the method comprises the steps of keeping the temperature for a first preset time at a first preset temperature, then heating to a second preset temperature, and keeping the temperature for a second preset time at the second preset temperature.
Further, the metal plate is an aluminum alloy plate.
Further, the resin layer and the resin adhesive have the same composition.
The utility model provides a carbon fiber pultrusion profile of embedded metal sheet, is formed by the carbon fiber pultrusion profile preparation technology preparation of above-mentioned embedded metal sheet, the carbon fiber pultrusion profile of embedded metal sheet includes:
the vertical plate comprises at least two parallel support plates;
one part of the base plate is connected with at least two support plates, and the other part of the base plate extends along the width direction of the vertical plate; the metal plate is arranged on a part of the substrate extending along the width direction of the vertical plate, and the resin layer is arranged on the metal plate.
Furthermore, the vertical plate further comprises a connecting plate, the connecting plate is connected with at least two support plates, and the metal plate is parallel to the base plate.
Further, the vertical plate is vertically arranged, the base plate is horizontally arranged, the vertical plate and the base plate are integrally formed, and the vertical plate and the base plate are formed into an L shape.
The technical scheme of the invention has the following beneficial effects:
the invention provides a carbon fiber pultrusion profile embedded with a metal plate and a manufacturing process thereof. The resin layer increases the binding force between the metal plate and the carbon fiber prefabricated section bar, and simultaneously improves the weather resistance of the metal plate.
Drawings
FIG. 1 is a schematic structural view of an alternative carbon fiber pultruded profile with embedded metal plates according to an embodiment of the second aspect of the present invention;
fig. 2 is another schematic structural view of an alternative configuration of a carbon fiber pultruded profile embedded with a metal plate according to an embodiment of the second aspect of the present invention.
Reference numerals: a vertical plate 10; a support plate 11; a connecting plate 12; a substrate 20; a metal plate 30; and a resin layer 40.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
According to the first aspect of the invention, the manufacturing process of the carbon fiber pultrusion profile with the embedded metal plate comprises the following steps:
s10, compounding the carbon fibers with the resin adhesive, and performing prefabrication and molding;
according to an alternative implementation of the present invention, step S10 includes:
s11, adding carbon fibers into the mold, sealing and vacuumizing;
s12, preheating the mold and the resin adhesive, and filling the resin adhesive into the mold under a vacuum condition; the vacuum condition is expressed in terms of vacuum degree, and the vacuum degree is preferably less than-0.04 MPa.
And S13, heating and curing, and obtaining the prefabricated forming section when the curing degree is less than a first preset value. The first predetermined value is less than or equal to 55%, e.g., the first predetermined value can be 40%, 45%, 48%, 50%, 52%, or 54%.
S20, performing primary curing on the prefabricated profile;
in another optional implementation manner of the present invention, in step S20, the curing degree of the primary curing is 70 to 85%. For example, the degree of cure of the primary cure may be 70%, 75%, 80%, or 85%. The metal plate is placed under the condition of incomplete curing, the bonding force between the metal plate and the carbon fiber composite material (or called prefabricated profile) can be improved, and the relative position between the metal plate and the carbon fiber composite material can also be ensured.
S30, paving the metal plate on the surface of the profile after the primary curing, and adding a resin layer on the metal plate, wherein the area of the resin layer is larger than that of the metal plate; that is, the resin layer can completely cover the metal plate and cover the joint of the metal plate and the carbon fiber composite material.
And S40, carrying out secondary curing, and completely curing the resin adhesive and the resin layer to obtain the carbon fiber pultrusion section with the embedded metal plate.
According to an alternative implementation of the present invention, in step S40, the secondary curing includes: the method comprises the steps of keeping the temperature for a first preset time at a first preset temperature, then heating to a second preset temperature, and keeping the temperature for a second preset time at the second preset temperature.
For example, the first predetermined temperature may be 120-150 ℃, the first predetermined time may be 6-12 hours, the second predetermined temperature may be 180-250 ℃, and the second predetermined time may be 8-10 hours. The secondary curing adopts a gradual heating mode, so that the mechanical strength of the final section is improved.
In an alternative embodiment of the invention, the resin glue comprises the following components: liquid bisphenol A diglycidyl ether, acrylonitrile-isoprene copolymer and a curing agent.
It should be noted that the liquid bisphenol a diglycidyl ether and the acrylonitrile-isoprene copolymer can be self-assembled into a nano structure, play a certain toughening role, enhance the mechanical properties of the carbon fiber composite material, and also have no influence on the viscosity of the resin adhesive, thereby ensuring the impregnation effect under vacuum conditions. The curing agent may be piperidine, tetramethylpiperidinamine, and the like, as is well known to those skilled in the art. The resin adhesive can be composed of the above components, and additives such as toughening agent and the like well known by those skilled in the art can be added, but the amount of the additives is not more than 5%. The amounts of the liquid bisphenol a diglycidyl ether, the acrylonitrile-isoprene copolymer and the curing agent can be adjusted as required, and for example, the liquid bisphenol a diglycidyl ether, the acrylonitrile-isoprene copolymer and the curing agent can be, by weight: 70-80%, 10-30% and 5-20%.
When the resin adhesive is used for preparing the carbon fiber composite material, the ratio of the resin adhesive to the carbon fiber (hand lay-up 4: 6) can be 1-3: 7-9, the using amount of the carbon fibers can be increased, the using amount of the resin adhesive can be reduced, and the mechanical property of the composite material can be improved.
According to an alternative realization of the invention, the metal sheet is an aluminium alloy sheet. It is to be understood that the metal plate is not limited to the aluminum alloy plate, but may be other alloy plates.
According to an alternative embodiment of the invention, the resin layer and the resin glue are of the same composition. The composition of the resin layer may be different from that of the resin paste, and a transparent resin layer made of a transparent polymer resin may be selected.
The following further describes the process for producing a carbon fiber pultruded profile with embedded metal plates according to the present invention with reference to specific examples, it should be understood that the present invention is not limited to the following examples.
Example 1
S11, adding carbon fibers into the mold, sealing and vacuumizing;
s12, preheating the mold and the resin adhesive, and filling the resin adhesive into the mold under a vacuum condition; the vacuum degree is less than-0.04 MPa; wherein the ratio of resin glue to carbon fiber is 2: 8;
s13, heating and curing, wherein the curing degree is 52%, and obtaining a prefabricated molding section;
s20, performing primary curing on the prefabricated profile, wherein the curing degree of the primary curing is 75%;
s30, paving an aluminum alloy sheet on the surface of the primarily cured profile, and adding a resin layer on the metal plate, wherein the area of the resin layer is larger than that of the metal plate;
s40, carrying out secondary curing under the following conditions: the temperature was first maintained at 130 ℃ for 12h, then raised to 190 ℃ and maintained at 190 ℃ for 8 h. And completely curing the resin glue and the resin layer to obtain the carbon fiber pultrusion section with the embedded metal plate.
The resin adhesive consists of the following components: liquid bisphenol A diglycidyl ether, acrylonitrile-isoprene copolymer and a curing agent.
Example 2
S11, adding carbon fibers into the mold, sealing and vacuumizing;
s12, preheating the mold and the resin adhesive, and filling the resin adhesive into the mold under a vacuum condition; the vacuum degree is less than-0.04 MPa; wherein, the ratio of the resin glue to the carbon fiber is 3: 7;
s13, heating and curing, wherein the curing degree is 50%, and obtaining a prefabricated molding section;
s20, performing primary curing on the prefabricated profile, wherein the curing degree of the primary curing is 78%;
s30, paving an aluminum alloy sheet on the surface of the primarily cured profile, and adding a resin layer on the metal plate, wherein the area of the resin layer is larger than that of the metal plate;
s40, carrying out secondary curing under the following conditions: the temperature was first maintained at 150 ℃ for 10h, then raised to 220 ℃ and maintained at 220 ℃ for 8 h. And completely curing the resin glue and the resin layer to obtain the carbon fiber pultrusion section with the embedded metal plate.
The resin adhesive consists of the following components: liquid bisphenol A diglycidyl ether, acrylonitrile-isoprene copolymer and a curing agent.
Comparative example 1
S11, adding carbon fibers into the mold;
s12, preheating the mold and the resin adhesive, and filling the resin adhesive into the mold under normal pressure; wherein the ratio of resin glue to carbon fiber is 2: 8;
s13, heating and curing, wherein the curing degree is 52%, and obtaining a prefabricated molding section;
s20, performing primary curing on the prefabricated profile, wherein the curing degree of the primary curing is 75%;
s30, paving an aluminum alloy sheet on the surface of the primarily cured profile, and adding a resin layer on the metal plate, wherein the area of the resin layer is larger than that of the metal plate;
s40, carrying out secondary curing under the following conditions: the temperature was first maintained at 130 ℃ for 12h, then raised to 190 ℃ and maintained at 190 ℃ for 8 h. And completely curing the resin glue and the resin layer to obtain the carbon fiber pultrusion section with the embedded metal plate.
The resin adhesive consists of the following components: liquid bisphenol A diglycidyl ether, acrylonitrile-isoprene copolymer and a curing agent.
Comparative example 2
S11, adding carbon fibers into the mold, sealing and vacuumizing;
s12, preheating the mold and the resin adhesive, and filling the resin adhesive into the mold under a vacuum condition; the vacuum degree is less than-0.04 MPa; wherein the ratio of resin glue to carbon fiber is 2: 8;
s13, heating and curing, wherein the curing degree is 52%, and obtaining a prefabricated molding section;
s20, performing primary curing on the prefabricated profile, wherein the curing degree of the primary curing is 75%;
s30, paving an aluminum alloy sheet on the surface of the primarily cured profile, and adding a resin layer on the metal plate, wherein the area of the resin layer is larger than that of the metal plate;
s40, completely curing the resin adhesive and the resin layer at 190 ℃ to obtain the carbon fiber pultrusion profile embedded with the metal plate.
The resin adhesive consists of the following components: liquid bisphenol A diglycidyl ether, acrylonitrile-isoprene copolymer and a curing agent.
The mechanical property test result is as follows:
shear force: example 1 sample ≈ example 2 sample > comparative example 1 sample.
Impact properties, example 2 specimen > comparative example 1 specimen.
Therefore, the mechanical property of the final section is improved by the vacuum degree and the secondary curing mode of gradually increasing the temperature.
As shown in fig. 1 and 2, the carbon fiber pultruded profile of the embedded metal plate 30 according to the embodiment of the second aspect of the present invention is manufactured by the above-mentioned carbon fiber pultruded profile manufacturing process of the embedded metal plate 30, and the carbon fiber pultruded profile of the embedded metal plate 30 includes:
the vertical plate comprises at least two parallel support plates 11;
the base plate 20, a part of the base plate 20 connects at least two support plates 11, another part extends along the width direction of the riser; the metal plate 30 is provided at a portion of the base plate 20 extending in the width direction of the riser, and the resin layer 40 is provided on the metal plate 30.
In an alternative implementation of the present invention, the vertical plate further includes a connecting plate 12, the connecting plate 12 connects at least two support plates 11, and the metal plate 30 is parallel to the base plate 20.
In another alternative implementation manner of the present invention, the vertical plate is vertically disposed, the base plate 20 is horizontally disposed, the vertical plate and the base plate 20 are integrally formed, and the vertical plate and the base plate 20 are formed in an L shape.
The carbon fiber pultrusion profile embedded with the metal plate 30 can be used as a wing plate of a passenger car, and is light in weight, corrosion-resistant and good in mechanical strength.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The manufacturing process of the carbon fiber pultrusion profile with the embedded metal plate is characterized by comprising the following steps of:
s10, compounding the carbon fibers with the resin adhesive, and performing prefabrication and molding;
s20, performing primary curing on the prefabricated profile;
s30, paving a metal plate on the surface of the profile after primary curing, and adding a resin layer on the metal plate, wherein the area of the resin layer is larger than that of the metal plate;
s40, carrying out secondary curing, and completely curing the resin adhesive and the resin layer to obtain the carbon fiber pultrusion profile embedded with the metal plate; the resin adhesive comprises the following components: liquid bisphenol A diglycidyl ether, acrylonitrile-isoprene copolymer and a curing agent; in the step S20, the curing degree of the primary curing is 70-85%.
2. The process of manufacturing a metal plate-embedded carbon fiber pultrusion profile as claimed in claim 1, wherein the step S10 includes:
s11, adding carbon fibers into the mold, sealing and vacuumizing;
s12, preheating the mold and the resin adhesive, and filling the resin adhesive into the mold under a vacuum condition;
and S13, heating and curing, and obtaining the prefabricated forming section when the curing degree is less than a first preset value.
3. The process of manufacturing a metal plate-embedded carbon fiber pultrusion profile as claimed in claim 1, wherein in the step S40, the secondary curing includes: the method comprises the steps of keeping the temperature for a first preset time at a first preset temperature, then heating to a second preset temperature, and keeping the temperature for a second preset time at the second preset temperature.
4. The process for manufacturing a carbon fiber pultruded profile according to claim 1, wherein said metal plate is an aluminum alloy plate.
5. The process for manufacturing a metal plate-embedded carbon fiber pultruded profile according to claim 1, wherein the resin layer and the resin adhesive have the same composition.
6. A metal plate embedded carbon fiber pultruded profile produced by the process for producing the metal plate embedded carbon fiber pultruded profile according to any one of claims 1 to 5, comprising:
the vertical plate comprises at least two parallel support plates;
one part of the base plate is connected with at least two support plates, and the other part of the base plate extends along the width direction of the vertical plate; the metal plate is arranged on a part of the substrate extending along the width direction of the vertical plate, and the resin layer is arranged on the metal plate.
7. The metal plate embedded carbon fiber pultruded profile according to claim 6, wherein said vertical plate further comprises a connecting plate connecting at least two of said support plates, said metal plate being parallel to said base plate.
8. The metal plate-embedded carbon fiber pultruded profile according to claim 6, wherein the vertical plate is vertically disposed, the base plate is horizontally disposed, the vertical plate and the base plate are integrally formed, and the vertical plate and the base plate are formed in an L shape.
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