CN219969093U - 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet - Google Patents
0-degree or 90-degree continuous fiber reinforced CF-SMC sheet Download PDFInfo
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- CN219969093U CN219969093U CN202220699523.XU CN202220699523U CN219969093U CN 219969093 U CN219969093 U CN 219969093U CN 202220699523 U CN202220699523 U CN 202220699523U CN 219969093 U CN219969093 U CN 219969093U
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- 239000000835 fiber Substances 0.000 title claims abstract description 51
- 239000011197 carbon fiber sheet molding compound Substances 0.000 title claims abstract description 45
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 52
- 239000004917 carbon fiber Substances 0.000 claims abstract description 52
- 229920005989 resin Polymers 0.000 claims abstract description 51
- 239000011347 resin Substances 0.000 claims abstract description 51
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000004705 High-molecular-weight polyethylene Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920001778 nylon Polymers 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
- 239000004760 aramid Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 4
- 239000004033 plastic Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 56
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012778 molding material Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 150000003377 silicon compounds Chemical class 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 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
- 239000002861 polymer material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 230000007480 spreading Effects 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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- Reinforced Plastic Materials (AREA)
Abstract
The utility model discloses a 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet, which comprises a release paper layer (1), a resin layer (3) and a separation film layer (5), wherein the release paper layer (1) is positioned at the bottommost layer, the separation film layer (5) is positioned at the topmost layer, and the resin layer (3) is positioned between the release paper layer (1) and the separation film layer (5); the resin layer (3) is provided with chopped carbon fibers (2) and 0-degree or 90-degree continuous fibers (4); the utility model not only maintains the excellent characteristics of low density and high fluidity of the material of the traditional CF-SMC sheet, but also has better mechanical properties, can improve the mechanical properties of main structure and sub-structure parts in the fields of automobiles, rail transit, aerospace and military industry, and has wide market application prospect.
Description
Technical Field
The utility model relates to a CF-SMC sheet, in particular to a 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet, and belongs to the technical field of high polymer materials.
Background
SMC sheets, which are known as sheet molding materials throughout the Chinese, are largely classified into GF-SMC sheets (chopped glass fiber sheet molding materials) and CF-SMC sheets (chopped carbon fiber sheet molding materials). SMC technology, chinese is called sheet molding technology, is one of the most common production methods of composite material parts (usually done in deep processing factories, such as automobile parts, etc.), and has the advantages of less production waste, high yield, large design freedom, capability of realizing functional integration, etc., so that SMC sheets are widely used for manufacturing solid, durable and light composite material parts required for transportation, electricity, construction and fire protection in large quantities.
The traditional CF-SMC sheet, which is fully called a chopped carbon fiber sheet molding material, is a composite material which consists of carbon fiber chopped fibers and resin. In recent years, new SMC sheets based on carbon fibres have been commercialized, fully gaining industrial use, for the production of ultra-light structural parts, such as automotive parts, with properties superior to those of similar aluminium and steel partsEtc. A first advantage of conventional CF-SMC sheets is the low density (density of 1.4-1.5g/cm 3 ) Is superior to the traditional aluminum alloy (density of 2.75g/cm 3 About) and steel (density of 7.85g/cm 3 Left and right), and for the application fields of automobiles, rail transit, aerospace, military industry and the like, the weight and energy saving and better economic benefit are realized. A second advantage of conventional CF-SMC sheets is good flowability, also when using a molding process (often done in a deep processing plant), which is higher in resin flowability, easier filling of the mold with resin and fibers, and better product quality than conventional prepregs (compositions of resin matrix and reinforcement made by impregnating continuous fibers or fabrics with resin matrix under tightly controlled conditions). However, the mechanical properties of conventional CF-SMC sheets have a major disadvantage: products produced from CF-SMC sheets (often done by deep processing plants, such as car parts, etc.) have a maximum tensile strength of only around 300MPA, a maximum tensile modulus of around 43GPA, much lower than the tensile strength of steel (at 200-500 MPA) and the tensile modulus of steel (at 180-210 MPA), and much lower than products produced from conventional prepregs (tensile strength around 2500MPA, tensile modulus around 150 GPA), which is detrimental to the application of conventional CF-SMC sheets to higher demanding products.
In order to cope with the problem in the current market (deep processing factory), the traditional prepreg and the traditional CF-SMC sheet material distribution lamination method are often adopted in the technology, so that the mechanical properties of the product are improved. However, such a method increases stations in deep processing factories (factories for purchasing and using conventional CF-SMC sheets, for producing automobile parts, etc.), increases lamination processes and personnel, increases operation intensity and potential safety hazards, reduces operation efficiency, increases product cost, and further reduces purchasing intent of customers (automobile assembly factories, etc.). Resulting in a significant reduction in the profitability of the further processing plant. There is an urgent need for a new technology to solve this situation-!
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet, thereby overcoming the defects in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet comprises a release paper layer, a resin layer and a separation film layer, wherein the release paper layer is positioned at the bottommost layer, the separation film layer is positioned at the topmost layer, and the resin layer is positioned between the release paper layer and the separation film layer; there are chopped carbon fibers and 0 ° or 90 ° continuous fibers in the resin layer.
As a preferable scheme, the chopped carbon fibers are dispersed in the resin layer; the 0 DEG or 90 DEG continuous fibers are positioned on the chopped carbon fibers.
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 scheme, the chopped carbon fibers include, but are not limited to, carbon fibers of type T300, or carbon fibers of type T700, or carbon fibers of type T800, or carbon fibers of type T1000, or carbon fibers of type T1100, or carbon fibers of type MJ60, and the length of the chopped carbon fibers is 20-30mm.
As a preferred embodiment, the resin layer 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 0 ° or 90 ° continuous fiber includes, but is not limited to, carbon fiber, or glass fiber, or aramid fiber, or high molecular weight polyethylene fiber, or nylon fiber.
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 CF-SMC sheet, the utility model adds the chopped carbon fiber and the 0-degree or 90-degree continuous fiber with higher mechanical property into the resin layer, so that the excellent characteristics of low density and high fluidity of the material of the traditional CF-SMC sheet are maintained, and more importantly, the mechanical property is improved. The tensile strength of the CF-SMC sheet product can reach about 1300MPA, the tensile modulus is up to 75GPA, and the tensile strength is far higher than that of a traditional CF-SMC sheet by 300MPA and 43GPA, so that the CF-SMC sheet product can improve the mechanical properties of main structural and sub-structural parts in the fields of automobiles, rail transit, aerospace and military industry.
2. Compared with the traditional CF-SMC sheet, the CF-SMC sheet provided by the utility model reduces the previous lamination process in the processing process, reduces the work station and personnel, reduces the potential safety hazard, can improve the working efficiency of a deep processing plant, reduces the production cost, improves the purchase intention of customers and the profit of the deep processing plant, and has wider market application prospect.
Drawings
FIG. 1 is a schematic elevational cross-sectional view of the present utility model;
FIG. 2 is a schematic side cross-sectional view of the present utility model;
FIG. 3 is a schematic top view of the present utility model;
FIG. 4 is a schematic illustration of a 0 continuous fiber structure of the present utility model;
fig. 5 is a schematic view of a 90 ° continuous fiber structure according to 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 release paper comprises a release paper layer 1, a resin layer 3 and a separation film layer 5, wherein the release paper layer 1 is positioned at the bottommost layer, the separation film layer 5 is positioned at the topmost layer, and the resin layer 3 is positioned between the release paper layer 1 and the separation film layer 5; chopped carbon fibers 2 are uniformly dispersed in the resin layer 3, and 0 ° or 90 ° continuous fibers 4 are provided on the chopped carbon fibers 2.
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 fibers 2 and the resin layer 3.
The chopped carbon fibers 2 are the lowest second layer in the present utility model. The chopped carbon fibers 2 are formed by chopping carbon fiber filaments by a fiber cutter, and the basic performance of the chopped carbon fibers is mainly determined by the performance of the raw material, namely the carbon fiber filaments. The chopped carbon fiber 2 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 2 is usually about 25mm, and the raw materials can be carbon fibers of various grades such as T300, T700, T800, T1000, T1100, MJ60 and the like, and the chopped carbon fiber can be 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 fibers 2 are in contact with the lower release paper layer 1, the resin layer 3, and the upper 0 DEG or 90 DEG continuous fibers 4.
The resin layer 3 in the present utility model is located between the release paper layer 1 and the release film layer 5. Resins are generally organic polymers that have a softening or melting range after heating, a tendency to flow under external forces during softening, and are solid or semi-solid at ordinary temperatures, and sometimes liquid. The resin layer of the utility model 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 fibers 2, 0-degree or 90-degree continuous fibers 4, so that the mechanical property of the CF-SMC sheet of the utility model is improved. The resin layer 3 is in contact with the underlying release paper layer 1, with the chopped carbon fibers 2, with the 0 or 90 continuous fibers 4, and with the separator layer 5.
The 0 ° or 90 ° continuous fibers 4 in the present utility model are located between the chopped carbon fibers 2, the resin layer 3 and the separator layer 5. Continuous fibers are generally fibrous materials having an aspect ratio large enough to achieve uninterrupted reinforcement along their length. The 0 ° or 90 ° continuous fibers 4 of the present utility model include, but are not limited to, carbon fibers, glass fibers, aramid fibers, high molecular weight polyethylene fibers, or nylon fibers, including 0 ° continuous fibers (as shown in fig. 4), or 90 ° continuous fibers (as shown in fig. 5) in two arrangements. These fibers are combined with the resin as a reinforcing material to improve the mechanical properties of the CF-SMC sheet of the present utility model. The 0 ° or 90 ° continuous fibers 4 are in contact with the chopped carbon fibers 2, with the resin layer 3, and with the separator layer 5.
The barrier film layer 5 in the present utility model is located at the uppermost layer. The separator layer 5 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 prevents dust, moisture, oil stains, and the like from contaminating the CF-SMC sheet of the present utility model, and when the CF-SMC sheet is used, the separator layer 5 may be peeled off. The contact surface of the isolating film layer 5 with the 0-degree or 90-degree continuous fiber 4 and the resin layer 3 has certain separating capability. The barrier film layer 5 is in contact with the 0 ° or 90 ° continuous fibers 4, and the barrier film layer 5 is in contact with the resin layer.
The CF-SMC sheet disclosed by the utility model is prepared according to the following process steps:
s1, unfolding release paper;
s2, mixing and stirring resin raw materials to obtain resin liquid (different states according to the characteristics of each resin raw material);
s3, coating resin liquid at a certain temperature (usually 25-30 ℃ according to different temperature requirements of each resin characteristic) on release paper;
s4, cutting the continuous carbon fibers into short carbon fibers with the length of 25mm by using manual scissors or short mechanical equipment (the length of the short carbon fibers can be properly adjusted according to the product requirement), and uniformly dispersing the cut short carbon fibers on resin liquid of release paper;
s5, covering the 0-degree or 90-degree continuous fibers on the chopped carbon fibers by using manual or traction mechanical equipment;
s6, spreading the isolating film, and coating resin liquid at a certain temperature (usually 25-30 ℃ according to different temperature requirements of each resin characteristic) on the isolating film;
s7, covering a separation film with resin liquid on release paper with the resin liquid, the chopped carbon fibers and 0-degree or 90-degree continuous fibers;
s8, compacting the release paper, the chopped carbon fiber, the 0-degree or 90-degree continuous fiber and the isolating film at a certain temperature (about 100 ℃ under the normal condition and different temperature requirements according to the characteristics of each resin) and a certain pressure (according to the field condition) through manual or pressing equipment, removing interlayer bubbles, and converting the resin liquid into a semi-solid state to obtain a CF-SMC sheet;
s9, placing the CF-SMC sheet material into a drying room at 30 ℃ for curing for 10 hours so as to enhance the interfacial bonding capability between the chopped carbon fibers, the 0-degree or 90-degree continuous fibers and the resin;
s10, placing the cured CF-SMC sheet in a low-temperature environment of 0 ℃ or-18 ℃ for preservation, wherein the low temperature is favorable for maintaining the technological property and mechanical property of the CF-SMC sheet.
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 (7)
1. A 0 ° or 90 ° continuous fiber reinforced CF-SMC sheet, characterized by: the novel plastic isolation paper comprises a release paper layer (1), a resin layer (3) and an isolation film layer (5), wherein the release paper layer (1) is positioned at the bottommost layer, the isolation film layer (5) is positioned at the topmost layer, and the resin layer (3) is positioned between the release paper layer (1) and the isolation film layer (5); the resin layer (3) is provided with chopped carbon fibers (2) and 0-degree or 90-degree continuous fibers (4).
2. The 0 ° or 90 ° continuous fiber reinforced CF-SMC sheet according to claim 1, characterized in that: the chopped carbon fibers (2) are dispersed in the resin layer (3); the 0-degree or 90-degree continuous fibers (4) are positioned on the chopped carbon fibers (2).
3. The 0 ° or 90 ° continuous fiber reinforced CF-SMC sheet according to claim 1, characterized in that: the release paper layer (1) comprises a PE film, a PA film, a PET film, a PP film or a PE & PA composite film.
4. The 0 ° or 90 ° continuous fiber reinforced CF-SMC sheet according to claim 1, characterized in that: the chopped carbon fiber (2) is formed by chopping carbon fiber filaments through a fiber cutting machine, and comprises carbon fibers of the types T300, T700, T800, T1000, T1100 or MJ60, and the fiber length of the carbon fibers is 20-30mm.
5. The 0 ° or 90 ° continuous fiber reinforced CF-SMC sheet according to claim 1, characterized in that: the resin layer (3) comprises unsaturated polyester resin, epoxy vinyl resin, epoxy resin or polyurethane resin.
6. The 0 ° or 90 ° continuous fiber reinforced CF-SMC sheet according to claim 1, characterized in that: the 0-degree or 90-degree continuous fibers (4) comprise carbon fibers, glass fibers, aramid fibers, high-molecular-weight polyethylene fibers or nylon fibers in two arrangement and distribution forms of 0-degree continuous fibers or 90-degree continuous fibers.
7. The 0 ° or 90 ° continuous fiber reinforced CF-SMC sheet according to claim 1, characterized in that: the isolating film layer (5) comprises a PE film or a PE & PA composite film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699523.XU CN219969093U (en) | 2022-03-28 | 2022-03-28 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699523.XU CN219969093U (en) | 2022-03-28 | 2022-03-28 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet |
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| Publication Number | Publication Date |
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| CN219969093U true CN219969093U (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220699523.XU Active CN219969093U (en) | 2022-03-28 | 2022-03-28 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701227A (en) * | 2022-03-28 | 2022-07-05 | 贵州至当科技有限公司 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701227A (en) * | 2022-03-28 | 2022-07-05 | 贵州至当科技有限公司 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet and preparation method thereof |
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