CN210390356U - Composite material foam sandwich structure capable of ensuring product flatness - Google Patents
Composite material foam sandwich structure capable of ensuring product flatness Download PDFInfo
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- CN210390356U CN210390356U CN201921086053.4U CN201921086053U CN210390356U CN 210390356 U CN210390356 U CN 210390356U CN 201921086053 U CN201921086053 U CN 201921086053U CN 210390356 U CN210390356 U CN 210390356U
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Abstract
The utility model discloses a guarantee combined material foam sandwich structure of product plane degree, including last glass fiber covering, lower glass fiber covering, foam core and polylith carbon fiber dry cloth, every carbon fiber dry cloth is buckled respectively and is the zigzag, and respectively with last glass fiber covering, lower glass fiber covering medial surface passes through epoxy adhesive fixed connection, every carbon fiber dry cloth's middle position of buckling of perpendicular to each glass fiber covering respectively, and every carbon fiber dry cloth middle both sides of buckling the position be fixed with a foam core through epoxy adhesive respectively, make adjacent foam core separate through the middle position of buckling of every carbon fiber dry cloth. The utility model discloses, great bending deformation can not appear, guarantees the requirement of plane degree, has good anti deformability moreover to fully guarantee holistic structural strength.
Description
Technical Field
The utility model relates to a composite construction, a combined material foam sandwich structure who guarantees the product plane degree specifically says so.
Background
Under the background of the rapid development of the current Chinese rail transit, the design and manufacture of light weight have been the trend in the rail transit. Through the lightweight design of relevant interior trim parts and accessory equipment, the structure and the mass of the whole vehicle can be reduced, the running resistance is reduced, the running performance of the same power device is improved, the running power cost is reduced, and the relevant construction and maintenance cost is indirectly reduced.
The application of the composite material sandwich structure provides a material guarantee for light weight of rail transit, and compared with the material design of the traditional aluminum alloy, the composite material sandwich structure reduces the weight by about 30 percent, can simultaneously meet the requirements of light weight, high strength, dual performances of impact resistance and flame retardance, and meets the regulations of relevant standards in the railway industry, and related interior systems also have the function of fire prevention, so that the composite material sandwich structure can prevent fire from happening, and has the function of delaying the fire from spreading when the fire happens. Interior trim parts such as dividing wall structure are mostly half open structure on the train, often can't guarantee the requirement of plane degree when guaranteeing structural stability through increasing covering thickness. In addition, due to the selection of the foam core material, the PET foam core material cannot meet the high-temperature process of a press or an autoclave, and the plane deformation is caused. This utility model guarantees the intensity and the flatness requirement of product through adding the carbon fiber, and not only material itself has certain intensity, as the carrier of other equipment unit installations simultaneously, in order to guarantee certain installation strength, can bear the impact load that the train produced at high-speed operation in-process.
Disclosure of Invention
In order to solve the above problems, the present invention provides a composite material foam sandwich structure for ensuring product flatness.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a guarantee combined material foam sandwich structure of product plane degree, including last glass fiber covering, lower glass fiber covering, foam core and polylith carbon fiber dry cloth, every carbon fiber dry cloth is buckled respectively and is the zigzag, and pass through epoxy adhesive fixed connection with last glass fiber covering, lower glass fiber covering medial surface, the middle position of buckling of every carbon fiber dry cloth is perpendicular to each glass fiber covering respectively, and the both sides at the middle position of buckling of every carbon fiber dry cloth are fixed with a foam core through epoxy adhesive respectively, make adjacent foam core separate through the middle position of buckling of every carbon fiber dry cloth.
The utility model discloses to use the good glass fiber covering of autoclave technology shaping to bond through epoxy class adhesive and carbon fiber dry cloth and use normal atmospheric temperature vacuum bag technique solidification shaping, make sandwich structure under the great condition of product size, great bending deformation can not appear, guarantee the requirement of plane degree. The carbon fiber dry cloth is made of high-strength materials, is connected and arranged in a Z shape, is connected with and strengthens two glass fiber skins, also improves the integral connection strength of the middle part, and has good deformation resistance, thereby fully ensuring the integral structural strength.
The pore structure of the foam core material can reduce the weight of the structure, can increase the rigidity of the structure, can replace the traditional glass fiber reinforced plastic and aluminum alloy materials, can reduce the weight by about 30 percent under the same structure, and simultaneously has the advantages of large bonding surface of the skin, uniform load transmission, good shock resistance and contribution to the diffusion of impact load.
Drawings
The present invention will now be further described with reference to the accompanying drawings.
Fig. 1 is a schematic cross-sectional structure diagram of the present invention.
Detailed Description
As shown in fig. 1, a composite material foam sandwich structure for ensuring product flatness comprises an upper glass fiber skin 1, a lower glass fiber skin 2, a foam core material 3 and a plurality of carbon fiber dry cloths 4, wherein each carbon fiber dry cloth 4 is respectively bent into a zigzag shape and is respectively fixedly connected with the inner side surfaces of the upper glass fiber skin 1 and the lower glass fiber skin 2 through an epoxy adhesive 5, so that the surfaces of the skins are completely bonded, the carbon fiber dry cloths are soaked, the operation time is operated according to TDS instructions, and the composite material foam sandwich structure is prepared by vacuumizing and curing at normal temperature;
each glass fiber skin is formed by paving and pasting 2-4 layers of glass fiber prepregs, the paving and pasting process requires compaction without bubbles, the used materials require flame retardance, and the highest fire-proof grade meeting BS 6853, TB/T3237 and EN 45545-2R 1 standards is HL3 grade;
the middle bending part 6 of each piece of carbon fiber dry cloth 4 is respectively vertical to each glass fiber skin, and two sides of the middle bending part 6 of each piece of carbon fiber dry cloth 4 are respectively fixed with a foam core material 3 through an epoxy adhesive 5, so that the adjacent foam core materials 3 are separated through the middle bending part 6 of each piece of carbon fiber dry cloth 4, and the thickness of the adhesive layer of the epoxy adhesive 5 is 0.2-0.5 mm;
the carbon fiber dry cloth is a high-strength material, is connected and arranged in a Z shape, is not only connected with and reinforces the two glass fiber skins, ensures the reliability of the cured product, greatly reduces the weight, can meet the requirements of performance tests such as tensile strength, compressive strength, bending strength, peeling strength and the like, achieves the light weight of the product, and simultaneously ensures the surface strength and the rigidity of the product. At the same time, the dynamic performance can be tested without visible damage after 500000 times of alternating load tests. When the foam sandwich material is used, the effects of shock absorption and noise reduction can be achieved, and the comfort of passengers in riding is met.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (3)
1. A composite material foam sandwich structure for ensuring the product flatness is characterized in that: the carbon fiber dry cloth is bent in a Z shape respectively and is fixedly connected with the inner side faces of the upper glass fiber skin and the lower glass fiber skin through epoxy adhesives respectively, the middle bending part of each carbon fiber dry cloth is perpendicular to each glass fiber skin respectively, and two sides of the middle bending part of each carbon fiber dry cloth are fixed with a foam core material through the epoxy adhesives respectively, so that the adjacent foam core materials are separated through the middle bending part of each carbon fiber dry cloth.
2. The composite foam sandwich structure for ensuring the flatness of a product as claimed in claim 1, wherein: the thickness of the epoxy adhesive glue layer is 0.2-0.5 mm.
3. The composite foam sandwich structure for ensuring the flatness of a product as claimed in claim 1, wherein: each glass fiber skin is formed by laying and pasting 2-4 layers of glass fiber prepregs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921086053.4U CN210390356U (en) | 2019-07-11 | 2019-07-11 | Composite material foam sandwich structure capable of ensuring product flatness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921086053.4U CN210390356U (en) | 2019-07-11 | 2019-07-11 | Composite material foam sandwich structure capable of ensuring product flatness |
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| Publication Number | Publication Date |
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| CN210390356U true CN210390356U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921086053.4U Active CN210390356U (en) | 2019-07-11 | 2019-07-11 | Composite material foam sandwich structure capable of ensuring product flatness |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848527A (en) * | 2020-12-30 | 2021-05-28 | 苏州云逸航空复合材料结构有限公司 | Composite board and manufacturing method thereof |
| CN113715418A (en) * | 2021-09-07 | 2021-11-30 | 常州市新创智能科技有限公司 | Foam sandwich composite board and forming process thereof |
| CN113978066A (en) * | 2021-11-30 | 2022-01-28 | 江苏中科聚合新材料产业技术研究院有限公司 | Interlayer composite material of light high-speed rail interior floor and preparation method thereof |
-
2019
- 2019-07-11 CN CN201921086053.4U patent/CN210390356U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848527A (en) * | 2020-12-30 | 2021-05-28 | 苏州云逸航空复合材料结构有限公司 | Composite board and manufacturing method thereof |
| CN113715418A (en) * | 2021-09-07 | 2021-11-30 | 常州市新创智能科技有限公司 | Foam sandwich composite board and forming process thereof |
| CN113715418B (en) * | 2021-09-07 | 2023-02-24 | 常州市新创智能科技有限公司 | Foam sandwich composite board and forming process thereof |
| CN113978066A (en) * | 2021-11-30 | 2022-01-28 | 江苏中科聚合新材料产业技术研究院有限公司 | Interlayer composite material of light high-speed rail interior floor and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220126 Address after: No. 7800, Mizhou East Road, Zhucheng City, Weifang City, Shandong Province 262200 Patentee after: Shandong AVIC Huijin composite material technology Co.,Ltd. Address before: No. 7800, Mizhou East Road, Zhucheng City, Weifang City, Shandong Province 262200 Patentee before: Shandong AVIC Taida composite material Co.,Ltd. |
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| TR01 | Transfer of patent right |