CN219312208U - Fabric-reinforced CF-SMC sheet - Google Patents
Fabric-reinforced CF-SMC sheet Download PDFInfo
- Publication number
- CN219312208U CN219312208U CN202220699522.5U CN202220699522U CN219312208U CN 219312208 U CN219312208 U CN 219312208U CN 202220699522 U CN202220699522 U CN 202220699522U CN 219312208 U CN219312208 U CN 219312208U
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- China
- Prior art keywords
- layer
- carbon fiber
- fabric
- resin
- film
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- 239000011197 carbon fiber sheet molding compound Substances 0.000 title claims abstract description 19
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 61
- 239000004917 carbon fiber Substances 0.000 claims abstract description 61
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000004744 fabric Substances 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims description 16
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920005749 polyurethane resin Polymers 0.000 claims description 3
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 229920002799 BoPET Polymers 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000000748 compression moulding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 150000003377 silicon compounds Chemical class 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 moisture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Reinforced Plastic Materials (AREA)
Abstract
The utility model discloses a fabric-reinforced CF-SMC sheet, which sequentially comprises a release paper layer (1), a chopped carbon fiber layer (2), a carbon fiber fabric layer (3) and a separation film layer (4) from bottom to top; the chopped carbon fiber layer (2) consists of chopped carbon fibers and resin; the carbon fiber fabric layer (3) consists of carbon fiber fabrics and resin; the utility model not only maintains the high strength and high modulus of the fabric in the prepreg, but also has high fluidity, and can make up the appearance quality deficiency of the traditional prepreg caused by low fluidity during molding, thereby improving the appearance quality of the product and having wide market application prospect.
Description
Technical Field
The utility model relates to a CF-SMC sheet, in particular to a fabric-reinforced CF-SMC sheet, and belongs to the technical field of high polymer materials.
Background
In the molding process of the carbon fiber composite material part, the compression molding process is still the main stream molding process in all molding processes. The raw material adopts prepreg. The compression molding process is that a certain amount of prepreg is put into a matched mould cavity of a metal mould, a press with a heat source is used for generating certain temperature and pressure, and after the mould is matched, the prepreg is heated and softened in the mould cavity, flows under pressure, is full of flow, is full of the mould cavity for molding and curing under the action of certain temperature and pressure, so that a composite material product is obtained. The prepreg is a composition of a resin matrix and a reinforcement made by impregnating continuous fibers or fabrics with the resin matrix under tightly controlled conditions. Among them, prepregs are classified into unidirectional prepregs (UD) and fabric prepregs. Typically, unidirectional prepregs are used as the internal structure of the composite part and woven prepregs are used as the external structure of the composite part. The external structure typically requires sanding, painting, polishing treatments.
The compression molding process has the characteristics of higher production efficiency, accurate product size and smooth surface, and particularly, the composite material product with complex structure can be molded at one time generally without damaging the performance of the composite material product. However, the compression molding process has the defects of complex mold design and manufacture, high initial investment, and easy product appearance quality deficiency, repair rework, increased manufacturing cost and environmental pollution. In order to solve the appearance quality defect, a novel material is needed to solve the problem.
Disclosure of Invention
The technical problem to be solved by the present utility model is to provide a fabric reinforced CF-SMC sheet, thereby overcoming the above-mentioned drawbacks of the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the fabric-reinforced CF-SMC sheet comprises a release paper layer, a chopped carbon fiber layer, a carbon fiber fabric layer and a separation film layer from bottom to top; the chopped carbon fiber layer consists of chopped carbon fibers and resin; the carbon fiber fabric layer consists of carbon fiber fabric and resin.
As a preferred scheme, the release paper layer comprises, but is not limited to, a PE film, or a PA film, or a PET film, or a PP film, or a PE & PA composite film.
As a preferred embodiment, the chopped carbon fibers include, but are not limited to, T300, or T700, or T800, or T1000, or T1100, or MJ60 model carbon fibers, and the length of the chopped carbon fibers is 20-30mm.
As a preferred embodiment, the resin includes, but is not limited to, an unsaturated polyester resin, or an epoxy vinyl resin, or an epoxy resin, or a polyurethane resin.
As a preferred embodiment, the isolating film layer includes, but is not limited to, a PE film, or a PE & PA composite film.
The utility model has the beneficial effects that: compared with the prior art, the utility model has the following advantages:
1. compared with the traditional prepreg, the utility model is provided with the chopped carbon fiber layer and the carbon fiber fabric layer, so that the high strength and high modulus performance of the fabric in the prepreg are maintained during molding, and more importantly, the CF-SMC sheet has high fluidity, and the defect of appearance quality of the traditional prepreg caused by low fluidity can be overcome during molding, so that the appearance quality of a product is improved.
2. Compared with the traditional prepreg, the utility model has the advantages of reducing product repair, reducing manufacturing cost and reducing environmental pollution due to excellent appearance quality.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
fig. 2 is a schematic structural view of the release paper layer of the present utility model;
FIG. 3 is a schematic structural view of a chopped carbon fiber layer of the present utility model;
fig. 4 is a schematic structural view of the carbon fiber fabric layer of the present utility model.
The utility model is further described below with reference to the drawings and the detailed description.
Detailed Description
Example 1: as shown in fig. 1, the utility model comprises a release paper layer 1, a chopped carbon fiber layer 2, a carbon fiber fabric layer 3 and a separation film layer 4 from bottom to top; the chopped carbon fiber layer 2 is composed of chopped carbon fibers and resin; the carbon fiber fabric layer 3 is composed of carbon fiber fabric and resin.
The release paper layer 1 in the utility model is positioned at the lowest layer. The release paper layer 1 is the most common carrier for the traditional prepreg sheet and the traditional CF-SMC sheet, and consists of composite paper and silicon compound, wherein the composite paper plays a certain tensile bearing role and plays a role in bearing the CF-SMC sheet of the utility model, the silicon compound is coated on the surface of the composite paper, and the silicon compound enables the composite paper to have a certain separating capability from the CF-SMC sheet of the utility model. The release paper layer 1 is in contact with the upper chopped carbon fiber layer 2.
The chopped carbon fiber layer 2 is the lowest second layer in the utility model. The chopped carbon fiber layer 2 comprises chopped carbon fibers and resin, wherein the chopped carbon fibers are formed by chopping carbon fiber filaments through a fiber cutter, and the basic performance of the chopped carbon fiber filaments mainly depends on the performance of the raw material, namely the carbon fiber filaments. The resin is usually an organic polymer which has a softening or melting range after being heated, tends to flow under an external force during softening, and is solid or semi-solid at normal temperature, or may be liquid. The chopped carbon fiber has the advantages of uniform dispersion, various feeding modes, simple process and the like, and can be applied to the special field unsuitable for carbon fiber filaments. The length of the chopped carbon fiber is about 25mm, and the raw materials can be carbon fibers with various grades such as T300, T700, T800, T1000, T1100, MJ60 and the like, and the chopped carbon fiber is used as a reinforcing material to be combined with resin, so that the mechanical property of the CF-SMC sheet is improved. The chopped carbon fiber layer 2 is contacted with the lower release paper layer 1 and the upper carbon fiber fabric layer 3.
The carbon fiber fabric layer 3 is positioned between the chopped carbon fiber layer 2 and the isolating membrane layer 4, and the carbon fiber fabric layer 3 consists of carbon fiber fabric and resin. The fabric is a flat soft piece formed by intersecting, winding and connecting fine and soft long objects. The resin layer is unsaturated polyester resin, epoxy vinyl resin, epoxy resin or polyurethane resin, and the resin is used as a matrix material to be combined with chopped carbon fiber and carbon fiber fabric, so that the mechanical property of the CF-SMC sheet is improved. The carbon fiber fabric layer 3 is in contact with the chopped carbon fiber layer 2 and with the barrier film layer 4.
The barrier film layer 4 in the present utility model is located at the uppermost layer. The separator layer 4 is made of a sheet layer having a cover protection and separation function, such as a PE film or a PE & PA composite film, and has a cover protection function for the CF-SMC sheet of the present utility model, and is required to prevent dust, moisture, oil stains, etc. from contaminating the CF-SMC sheet of the present utility model, and when the CF-SMC sheet is used, the separator layer 4 is peeled off. The contact surface of the isolating membrane layer 4 and the carbon fiber fabric layer 3 has certain separating capability. The isolating membrane layer 4 is in contact with the carbon fiber fabric layer 3.
The embodiments of the present utility model are not limited to the above examples, and various changes made without departing from the spirit of the present utility model are all within the scope of the present utility model.
Claims (3)
1. A fabric-reinforced CF-SMC sheet, characterized by: the novel carbon fiber composite board comprises a release paper layer (1), a chopped carbon fiber layer (2), a carbon fiber fabric layer (3) and an isolating film layer (4) from bottom to top in sequence; the chopped carbon fiber layer (2) consists of chopped carbon fibers and resin; the carbon fiber fabric layer (3) consists of carbon fiber fabrics and resin; the chopped carbon fibers comprise carbon fibers of the types T300, T700, T800, T1000, T1100 or MJ60, and the length of the chopped carbon fibers is 20-30mm; the resin comprises unsaturated polyester resin, epoxy vinyl resin, epoxy resin or polyurethane resin.
2. The fabric-reinforced CF-SMC sheet according to claim 1, wherein: the release paper layer (1) comprises a PE film, a PA film, a PET film, a PP film or a PE & PA composite film.
3. The fabric-reinforced CF-SMC sheet according to claim 1, wherein: the isolating film layer (4) comprises a PE film or a PE & PA composite film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699522.5U CN219312208U (en) | 2022-03-28 | 2022-03-28 | Fabric-reinforced CF-SMC sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699522.5U CN219312208U (en) | 2022-03-28 | 2022-03-28 | Fabric-reinforced CF-SMC sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219312208U true CN219312208U (en) | 2023-07-07 |
Family
ID=87022524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220699522.5U Active CN219312208U (en) | 2022-03-28 | 2022-03-28 | Fabric-reinforced CF-SMC sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219312208U (en) |
-
2022
- 2022-03-28 CN CN202220699522.5U patent/CN219312208U/en active Active
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