CN113211882A - Manufacturing method of flexible honeycomb - Google Patents
Manufacturing method of flexible honeycomb Download PDFInfo
- Publication number
- CN113211882A CN113211882A CN202110518627.6A CN202110518627A CN113211882A CN 113211882 A CN113211882 A CN 113211882A CN 202110518627 A CN202110518627 A CN 202110518627A CN 113211882 A CN113211882 A CN 113211882A
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- Prior art keywords
- material layer
- honeycomb
- curing
- shaping
- cloth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
- B31D3/00—Making articles of cellular structure, e.g. insulating board
- B31D3/02—Making articles of cellular structure, e.g. insulating board honeycombed structures, i.e. the cells having an essentially hexagonal section
- B31D3/0223—Making honeycomb cores, e.g. by piling a plurality of web sections or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
- B31D3/00—Making articles of cellular structure, e.g. insulating board
- B31D3/02—Making articles of cellular structure, e.g. insulating board honeycombed structures, i.e. the cells having an essentially hexagonal section
- B31D3/0292—Making articles of cellular structure, e.g. insulating board honeycombed structures, i.e. the cells having an essentially hexagonal section involving auxiliary operations, e.g. expanding, moistening, glue-applying, joining, controlling
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- Laminated Bodies (AREA)
Abstract
The invention discloses a method for manufacturing a flexible honeycomb, which comprises the following steps: s1, selecting paper or cloth made of two materials, respectively marking the paper or cloth as a first material layer and a second material layer, and gluing the first material layer and the second material layer; s2, overlapping the two material layers with different adhesive tape widths obtained after the glue is applied to the S1 in a staggered manner; s3, carrying out hot pressing, stretching and forming on the block material obtained in the step S2; s4, shaping the material formed in the S3 through a shaping frame, wherein the shaping temperature is 250-280 ℃, the shaping time is 3-5 h, and the cooling rate is 20-30 ℃/min; and S5, dipping and curing the shaped honeycomb. The honeycomb produced by the manufacturing method of the flexible honeycomb has the relevant characteristics of the hexagonal honeycomb, and meanwhile, the obtained product can be bent in a large curvature in the plane, and the stability of the blank space is kept.
Description
Technical Field
The invention relates to the field of aerospace, in particular to a manufacturing method of a flexible honeycomb.
Background
The light high-strength composite material honeycomb has good mechanical strength, excellent dielectric property and excellent flame retardant property, and is widely applied to the fields of aerospace, electronics, ships and the like. However, most of the honeycombs in the current market are stable regular hexagonal structures, and the honeycombs are generally flat plate structures when leaving factories, the hexagonal honeycombs are difficult to be qualified under the conditions that structures with large curvature such as a radome and an arc-shaped built-in structure are needed, and although the appearance can be obtained by processes such as numerical control machining, splicing and extrusion forming, the quality of cells is difficult to ensure. Although general over-stretched honeycombs have certain flexibility, the over-stretched honeycombs are only bent in a single direction, and the bending in another direction still causes cell collapse, so that the use requirements cannot be met.
There is a need for a method of manufacturing a flexible honeycomb that can bend a product with a large curvature in a plane and maintain cell stability.
Disclosure of Invention
In order to solve the problems, the invention provides a method for manufacturing a flexible honeycomb, the honeycomb manufactured by the method for manufacturing the flexible honeycomb has the relevant characteristics of a hexagonal honeycomb, and meanwhile, the obtained product can be bent in a large curvature in a plane and the stability of blank spaces is kept.
The invention solves the technical problems by the following technical scheme:
the invention provides a method for manufacturing a flexible honeycomb, which comprises the following steps:
s1, selecting paper or cloth made of two materials, respectively marking the paper or cloth as a first material layer and a second material layer, and gluing the first material layer and the second material layer; the width of the adhesive tape on the first material layer is b, the pitch is b +3a, the width of the adhesive tape on the second material layer is a, and the pitch is b +3a, wherein b is more than a;
s2, overlapping the two material layers with different adhesive tape widths obtained after the glue is applied to the S1 in a staggered manner;
s3, carrying out hot pressing, stretching and forming on the block material obtained in the step S2;
s4, shaping the material formed in the S3 through a shaping frame, wherein the shaping temperature is 250-280 ℃, the shaping time is 3-5 h, and the cooling rate is 20-30 ℃/min;
s5, performing gum dipping and curing on the shaped honeycomb, performing gum dipping in a gum dipping mechanism, blending gum solution according to different materials, curing in an oven after gum dipping, wherein the curing temperature is 180-280 ℃, the curing time is 1-2 h, and repeating the gum dipping and curing processes to obtain high-strength flexible honeycomb products with different densities.
In the invention, in S1, honeycombs with different requirements can be prepared by adopting paper or cloth made of different materials;
preferably, the first material layer is aramid paper, polyimide paper, carbon fiber cloth or glass cloth;
preferably, the first material layer is made of glass cloth, and the second material layer is made of carbon fiber.
In the present invention, the staggered lamination of the two material layers in S2 is conventional in the art.
In the present invention, the steps of hot pressing, stretching and molding the block material in S3 are conventional in the art.
In the invention, in S4, the shaping is the key step of the application, and the strength of the product is improved by setting the shaping conditions;
preferably, in S4, the setting temperature is 265 ℃, the setting time is 4h, and the cooling rate is 25 ℃/min.
In the invention, the curing step is also important for improving the effect of the product, and the wave transmission performance of the honeycomb is improved;
preferably, in S5, the curing temperature is 250 ℃ and the curing time is 1.5 h.
The positive progress effect of the invention is as follows: the invention can utilize the existing production equipment of honeycomb production enterprises and the mature experience of honeycomb production, save a large amount of equipment modification capital and labor cost, and quickly produce high-strength flexible honeycombs at low cost; this honeycomb can guarantee to realize flexibility to each direction in certain thickness range, realizes in big curvature structures such as sphere and conical surface such as radome, hood lid that the hole check is laminated with the structural surface is perpendicular, has following advantage for traditional honeycomb:
(1) the compression strength is improved by 10-30%;
(2) the machining cost is reduced for machining the honeycomb, and the waste of raw materials is reduced;
(3) the technological processes such as honeycomb splicing and the like are reduced, the integrity of the honeycomb is kept, and the wave-transmitting performance of the honeycomb is improved;
(4) the honeycomb cell damage and collapse are avoided, and the uncertainty of nondestructive inspection of the honeycomb structure is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a first material layer and a second material layer according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the shaping of a flexible honeycomb according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the shaping of the flexible honeycomb according to the embodiment of the present invention.
Description of reference numerals:
1. a first material layer;
2. a second material layer;
3. dispensing;
4. an unstable edge of a rectangle;
5. a small rectangular space;
6. a large rectangular space.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The embodiment provides a manufacturing method of a flexible honeycomb, which comprises the following steps:
s1, as shown in fig. 1, selecting two kinds of paper or cloth, respectively marked as a first material layer 1 and a second material layer 2, and gluing the first material layer 1 and the second material layer 2 by using a dispensing joint 3; the width of the adhesive tape of the first material layer 1 is b, the pitch is b +3a, the width of the adhesive tape of the second material layer 2 is a, the pitch is b +3a, and b is more than a; the first material layer 1 is aramid paper, and the second material layer 2 is glass cloth;
s2, overlapping the two material layers with different adhesive tape widths obtained after the glue is applied to the S1 in a staggered manner;
s3, carrying out hot pressing, stretching and forming on the block material obtained in the step S2;
s4, shaping the material formed in the S3 mode through a shaping frame, wherein the shaping temperature is 265 ℃, the shaping time is 4 hours, and the cooling rate is 25 ℃/min;
and S5, as shown in figures 2 and 3, performing gum dipping and curing on the shaped honeycomb, performing gum dipping in a gum dipping mechanism, blending gum solution according to different materials, curing in an oven after gum dipping at the curing temperature of 250 ℃ for 1.5h, repeating the gum dipping and curing processes to obtain high-strength flexible honeycomb products with different densities, and forming a rectangular unstable edge 4, a small rectangular space 5 and a large rectangular space 6 in the process.
In this embodiment, in S1, honeycombs with different requirements may be prepared by using paper or cloth with different materials.
In this embodiment, in S4, the setting is the key step of this application, and through the setting of the setting condition, the strength of the product has been promoted.
In this embodiment, the curing step is also important for improving the effect of the product, and the wave transmission performance of the honeycomb is improved.
According to the embodiment, the mature experiences of the existing production equipment and honeycomb production of honeycomb production enterprises can be utilized, a large amount of equipment modification capital and labor cost are saved, and the high-strength flexible honeycomb can be produced quickly at low cost; this honeycomb can guarantee to realize flexibility to each direction in certain thickness range, realizes in big curvature structures such as sphere and conical surface such as radome, hood lid that the hole check is laminated with the structural surface is perpendicular, has following advantage for traditional honeycomb:
(1) the compression strength is improved by 10-30%;
(2) the machining cost is reduced for machining the honeycomb, and the waste of raw materials is reduced;
(3) the technological processes such as honeycomb splicing and the like are reduced, the integrity of the honeycomb is kept, and the wave-transmitting performance of the honeycomb is improved;
(4) the honeycomb cell damage and collapse are avoided, and the uncertainty of nondestructive inspection of the honeycomb structure is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A manufacturing method of a flexible honeycomb is characterized by comprising the following steps:
s1, selecting paper or cloth made of two materials, respectively marking the paper or cloth as a first material layer and a second material layer, and gluing the first material layer and the second material layer; the width of the adhesive tape on the first material layer is b, the pitch is b +3a, the width of the adhesive tape on the second material layer is a, and the pitch is b +3a, wherein b is more than a;
s2, overlapping the two material layers with different adhesive tape widths obtained after the glue is applied to the S1 in a staggered manner;
s3, carrying out hot pressing, stretching and forming on the block material obtained in the step S2;
s4, shaping the material formed in the S3 through a shaping frame, wherein the shaping temperature is 250-280 ℃, the shaping time is 3-5 h, and the cooling rate is 20-30 ℃/min;
s5, performing gum dipping and curing on the shaped honeycomb, performing gum dipping in a gum dipping mechanism, blending gum solution according to different materials, curing in an oven after gum dipping, wherein the curing temperature is 180-280 ℃, the curing time is 1-2 h, and repeating the gum dipping and curing processes to obtain high-strength flexible honeycomb products with different densities.
2. The method of making a flexible honeycomb of claim 1 wherein the first material layer is aramid paper, polyimide paper, carbon fiber cloth, or glass cloth.
3. The method of claim 1, wherein the first material layer is made of glass cloth and the second material layer is made of carbon fiber.
4. The method for manufacturing the flexible honeycomb according to claim 1, wherein in S4, the setting temperature is 265 ℃, the setting time is 4h, and the cooling rate is 25 ℃/min.
5. The method of claim 1, wherein in S5, the curing temperature is 250 ℃ and the curing time is 1.5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110518627.6A CN113211882A (en) | 2021-05-12 | 2021-05-12 | Manufacturing method of flexible honeycomb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110518627.6A CN113211882A (en) | 2021-05-12 | 2021-05-12 | Manufacturing method of flexible honeycomb |
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| Publication Number | Publication Date |
|---|---|
| CN113211882A true CN113211882A (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110518627.6A Pending CN113211882A (en) | 2021-05-12 | 2021-05-12 | Manufacturing method of flexible honeycomb |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5670000A (en) * | 1991-01-02 | 1997-09-23 | Hunter Douglas Inc. | Method of making a honeycomb panel |
| CN1695938A (en) * | 2004-05-11 | 2005-11-16 | 株式会社冈部卡米孔 | Mfg. method of baffle for paper made package and package chest having same |
| CN105459456A (en) * | 2015-12-22 | 2016-04-06 | 中国航空工业集团公司济南特种结构研究所 | Manufacturing method for concave hexagonal flexible honeycomb |
| CN106696360A (en) * | 2016-12-15 | 2017-05-24 | 中航复合材料有限责任公司 | Preparation method of para-aramid paper honeycomb core |
| CN108582890A (en) * | 2018-04-10 | 2018-09-28 | 中航复合材料有限责任公司 | A kind of flexible honeycomb and preparation method |
-
2021
- 2021-05-12 CN CN202110518627.6A patent/CN113211882A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5670000A (en) * | 1991-01-02 | 1997-09-23 | Hunter Douglas Inc. | Method of making a honeycomb panel |
| CN1695938A (en) * | 2004-05-11 | 2005-11-16 | 株式会社冈部卡米孔 | Mfg. method of baffle for paper made package and package chest having same |
| CN105459456A (en) * | 2015-12-22 | 2016-04-06 | 中国航空工业集团公司济南特种结构研究所 | Manufacturing method for concave hexagonal flexible honeycomb |
| CN106696360A (en) * | 2016-12-15 | 2017-05-24 | 中航复合材料有限责任公司 | Preparation method of para-aramid paper honeycomb core |
| CN108582890A (en) * | 2018-04-10 | 2018-09-28 | 中航复合材料有限责任公司 | A kind of flexible honeycomb and preparation method |
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Application publication date: 20210806 |
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| RJ01 | Rejection of invention patent application after publication |