Preparation method of aperiodic ordered fiber reinforced composite honeycomb structure

Abstract

The invention discloses a preparation method of a non-periodic ordered fiber reinforced composite material honeycomb structure, the honeycomb structure comprises one or more polygonal hole grids which are spliced according to a specific geometric rule, but the overall topological configuration does not have periodicity. The preparation method comprises the following steps: (1) preforming a cell unit: (1) cutting a prepreg, and (2) coating the prepreg; (2) assembling and compressing the hole grid units: fixing side plates for pushing and side plates for pressing, assembling a semi-fixed frame shaping module group, splicing the hole grid units, assembling a movable frame shaping module group, and pre-tightening a pressing strip; (3) integrally heating, pressurizing, curing and forming; and (4) demolding and trimming. The method is easy and convenient to operate, the needed manufacturing device is easy to machine, the number of types of molds (blocks) is small, consumed time is short, the method has high adaptability to non-periodic ordered complex topological configuration and different hole wall thickness requirements, and the final forming quality of the non-periodic ordered fiber reinforced composite honeycomb structure can be guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of composite material preparation and molding, in particular to a method for preparing a non-periodic ordered fiber reinforced composite material honeycomb structure. Background Art

[0002] Aperiodic order refers to long-range spatial order that does not satisfy periodic arrangement characteristics. The study of aperiodic ordered topology originated from the mathematical theory of geometric topology. In 1970, British mathematical physicist Roger Penrose discovered three different types of multi-unit aperiodic tilings, the famous Penrose tilings P1, P2, and P3. In 2023, Canadian mathematician Craig Kaplan proposed a single-unit aperiodic planar tiling method, the Einstein tiling. Inspired by the development of aperiodic topological theory, scholars from various countries have discovered in their exploration of new honeycomb structures that aperiodic ordered honeycomb structures exhibit the potential to improve both strength and energy absorption. As a result, their design and mechanical properties have attracted increasing attention. However, the current method for preparing aperiodic ordered honeycomb structures mainly uses 3D printing to prepare demonstration and verification specimens in the laboratory. Due to the limitations of raw materials, they are still a long way from engineering application.

[0003] Fiber-reinforced composite materials have unique advantages in improving structural efficiency. Their use in the design and preparation of periodic honeycomb structures has been verified and has been actually applied in the fields of aviation, aerospace, transportation, and shipbuilding. Therefore, the use of fiber-reinforced composite materials as the base material to develop non-periodic ordered honeycomb structures is bound to greatly enhance their engineering application potential. However, the preparation methods of fiber-reinforced composite periodic honeycomb structures, such as traditional hot pressing, vacuum-assisted resin molding transfer, interlocking assembly molding, and cutting-and-folding preparation, are difficult to adapt to the complex topological configurations under non-periodic ordered characteristics. In particular, when the topological configuration or honeycomb cell wall thickness is different, the mold and preparation equipment must be customized, which is costly. Summary of the Invention

[0004] The purpose of the present invention is to develop a non-periodic ordered honeycomb structure using fiber-reinforced composite materials as a base material, which has excellent strength and toughness improvement and engineering application potential, but currently lacks a low-cost, highly reliable preparation method. A preparation method for a non-periodic ordered fiber-reinforced composite honeycomb structure is proposed. The method has simple steps and is based on the basic idea of ​​assembly molding. The required mold (block) types are relatively few, which can greatly reduce costs. It has strong adaptability to non-periodic ordered complex topological configurations; it adopts inner and outer double-layer frames to achieve positioning and shaping, and simultaneously applies in-plane pressure from the longitudinal and transverse directions to ensure positioning accuracy and forming stability; the inner semi-fixed frame shaping module constituting the inner frame has a unidirectional degree of freedom of adjustment, so that the preparation of non-periodic ordered fiber-reinforced composite honeycomb structures with different pore wall thickness requirements can be obtained without changing the mold.

[0005] The present invention is implemented by the following technical solutions:

[0006] A method for preparing a non-periodic ordered fiber-reinforced composite honeycomb structure, characterized in that the non-periodic ordered honeycomb structure comprises one or more polygonal cells, the different cells being correctly spliced ​​according to specific geometric rules, but the overall topological configuration is not periodic, and the cell walls of the honeycomb structure are made of fiber-reinforced composite material. The method for preparing the non-periodic ordered fiber-reinforced composite honeycomb structure is specifically completed by the following steps:

[0007] (I) Cell unit preforming: ① Prepreg cutting: Corresponding to the polygonal cells, the prepreg is cut into rectangular strips, with a width consistent with the height of the honeycomb structure and a length related to the perimeter of the polygonal cells and the thickness of the honeycomb cell wall; ② Prepreg wrapping: The prepreg strips are wrapped around the prefabricated unit modules 2 and 3, with the number of wrappings equal to the strip length divided by the unit perimeter, and the module height is the same as the width of the prepreg strips. Repeat the above steps to complete a certain number of cell unit preforming corresponding to different polygonal cells.

[0008] (2) Assembly and tightening of the grid unit: ① Fixing of the push side panels and the pressure side panels: The push side panels 1 and 16 are fixed to the bottom plate 29 by bolt connection, and the two intersect at right angles, and then the pressure side panels 17 and 28 are fixed to the bottom plate 29 by bolt connection, and the two intersect at right angles. These four side panels form a closed outer frame; ② Assembly of the semi-fixed frame shaping module group: First, insert the pin 4 into the semi-fixed frame shaping modules 5 to 15, and then insert them into the grooves of the bottom plate 29 (the cross section is a square structure, preferably a U-shaped groove) in order. Each module has freedom of movement along the slide direction. degree to accommodate the varying thickness requirements of the honeycomb cell walls; ③ Cell unit splicing: The preformed cell units obtained in step (1) are tightly spliced ​​from the inside out in a non-periodic, ordered pattern; ④ Assembly of the movable frame shaping module group: The movable frame shaping modules 19 to 27 are tightly spliced ​​in sequence around the edges of the cell units; ⑤ Bead pre-tightening: The two beadings 30 are respectively fitted to the outer sides of the movable frame shaping module group, and then multiple bolts 18 are screwed in through the threaded holes on the pressure-applying side panels 17 and 28, pressing against the two beadings 30 in the horizontal and vertical directions, ensuring close contact and uniform pressure between the cell units. Finally, the top plate 31 is placed flat on top of the assembled cell units.

[0009] (3) Overall heating and pressurizing for curing and molding: Place the entire set of devices after implementing step (2) flatly in an electric blast drying oven, set the heating temperature to 80°C, and maintain it for 30 minutes, then set the heating temperature to 130°C and maintain it for 2 hours, then turn off the power and wait for it to cool naturally, so as to maintain effective pressurization while heating to ensure the curing and molding effect.

[0010] (IV) Demolding and trimming: After the temperature drops to room temperature, take the entire device out of the drying oven, and then: remove the top plate, loosen the bolts 18, remove the two beadings 30 and the movable frame shaping modules 19 to 27, and then push out all the unit modules 2 and 3 to complete the demoulding; further, according to the required honeycomb length and width requirements, mechanical processing can be used to remove excess material and grind burrs.

[0011] The topological configuration of the non-periodic ordered honeycomb structure comes from a type of puzzle that has been proven by mathematicians to have non-periodic but ordered characteristics, including but not limited to Penrose tiling P1, P2, P3, Einstein tiling, etc., and the required piece of graphics is cut out from an infinite tiling plane.

[0012] The inner frame obtained by sequentially combining the semi-fixed frame shaping modules 5 to 15 and the movable frame shaping modules 19 to 27 is consistent with the outer edge of the cut-out graphic.

[0013] The unit modules 2 and 3 are consistent in shape and size with the inner walls of the polygonal cells contained in the non-periodic ordered honeycomb structure, and the pattern formed by sequentially splicing all preformed cell units is consistent with the cut-out pattern.

[0014] The semi-fixed frame shaping modules 5 to 15 are provided with pin holes, and the pin 4 is inserted into the hole to form a small interference fit so as to be combined together. The other end of the pin 4 is inserted into the U-shaped groove of the bottom plate 29 to form a transition fit, thereby achieving positioning perpendicular to the direction of the slide groove, and there is freedom of movement along the direction of the slide groove, which can adapt to different thickness requirements of the honeycomb cell wall.

[0015] The pushing side panels 1, 16 and the pressing side panels 17, 28 are fixed to the bottom plate 29 by bolts to form a closed outer frame; half of the inner frame obtained by sequentially combining the semi-fixed frame shaping modules 5 to 15 and the movable frame shaping modules 19 to 27 is pressed against the inner side of the outer frame, and the other half is pressed against by two horizontal and longitudinal pressure strips 30 under the tightening action of multiple evenly arranged bolts 18 and simultaneously pressurized in a normal direction, so that all preformed grid units are in close contact and compressed in all directions.

[0016] The unit modules 2 and 3 in contact with the prepreg, the semi-fixed frame positioning modules 5 to 15 and the movable frame shaping modules 19 to 27 are all made of polytetrafluoroethylene material to facilitate demoulding; other parts, including the pushing side panels 1 and 16, the pressure side panels 17 and 28, the bottom plate 29, the pin 4, the pressure strip 30 and the top plate 31 are all made of metal materials to ensure the pressure strength and uniform temperature conduction.

[0017] The method for preparing a non-periodic ordered fiber-reinforced composite honeycomb structure, and its preparation steps are applicable to the preparation of non-periodic ordered fiber-reinforced composite honeycomb structures of various topological configurations. Corresponding to the different figures cut out from the same puzzle type, taking the Penrose tiling P2 type as an example, the configured unit modules 2 and 3 remain unchanged, and the semi-fixed frame shaping modules 5 to 15 and the movable frame shaping modules 19 to 27 can be adjusted. When the corresponding puzzle types are different, the unit modules need to be adjusted at the same time.

[0018] The method for preparing a non-periodic ordered fiber-reinforced composite honeycomb structure has preparation steps that are applicable to different thickness requirements of the honeycomb structure cell walls. It can not only prepare conventional honeycomb structures with uniform thickness, but also meet variable thickness requirements, such as gradient design.

[0019] The beneficial effects of the present invention are:

[0020] The present invention provides a method for preparing a honeycomb structure of non-periodic ordered fiber reinforced composite material. In order to solve the preparation difficulties brought about by the non-periodic ordered complex topological configuration, a process method of lattice unit preforming-lattice unit assembly and pressing-overall heating and pressurizing solidification molding-demolding and trimming is proposed, which is simple to operate and short in time. This preparation method also greatly simplifies the preparation device and the corresponding mold (block), reducing manufacturing costs. The present invention ensures the positioning accuracy of the shaping module through the transition fit formed by the pin and the bottom plate U-shaped groove. At the same time, the double-layer frame design can achieve bidirectional pressure in the longitudinal and transverse directions, so that each lattice unit is in close contact and uniformly pressurized, and effectively avoids deformation and wrinkles of the fiber prepreg, so as to ensure the final molding quality of the non-periodic ordered fiber reinforced composite material honeycomb structure. The bottom plate U-shaped groove provides the semi-fixed frame shaping module with freedom of movement along the slide groove direction, which can adapt to the different thickness requirements of the honeycomb structure pore wall. The detachable and assembled shaping module and unit module greatly improve their adaptability to different topological configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the molding device of the present invention.

[0022] Figure 2 (a) and (b) are schematic diagrams of the push-resisting side plates of the present invention.

[0023] Figure 3 (a) and (b) are schematic diagrams of the Penrose tiling P2 type kite unit module and the dart unit module of the present invention.

[0024] Figure 4 (a) and (b) are schematic diagrams of the semi-fixed frame shaping module and the movable frame shaping module of the present invention, and schematic diagrams of 11 semi-fixed frame shaping modules and 9 movable frame shaping modules using a piece of graphics cut out from a Penrose tiling P2 puzzle as an example.

[0025] Figure 5 (a) and (b) are schematic diagrams of the pressure-applying side plates of the present invention.

[0026] Figure 6 (a) and (b) are schematic diagrams of the front and back sides of the base plate of the present invention.

[0027] Figure 7 (a) and (b) are schematic diagrams of the preforming steps of two types of lattice units of the present invention, and schematic diagrams of the preforming of kite units and dart units using the Penrose tiling P2 type as an example.

[0028] Figure 8Schematic diagram of the assembly and pressing steps of the grid units of the present invention: (a) the side panels for pushing and the side panels for applying pressure are assembled into a closed outer frame, (b) the pins are inserted into the semi-fixed frame shaping module, (c) the semi-fixed frame shaping module group is assembled, (d) the grid units are tightly spliced ​​from the inside to the outside, (e) the movable frame shaping module group is assembled, and (f) the pressure strips are pre-tightened to ensure that the grid units are in close contact and evenly compressed.

[0029] Figure 9 Schematic diagram of the demoulding and trimming steps of the present invention: (a) the unit module has not yet been launched, (b) demoulding is completed, the honeycomb boundary is marked, and (c) excess material is removed and burrs are polished.

[0030] Figure 10 (a) is a non-periodic ordered fiber-reinforced composite honeycomb structure prepared by the present invention, and (b) is its stress-strain curve obtained in a quasi-static compression test.

[0031] Figure 11 (a) and (b) are schematic diagrams of non-periodic ordered fiber-reinforced composite honeycomb structures with different pore wall thicknesses. The corresponding topological configurations come from the same figure cut out from the Penrose tiling P2 puzzle.

[0032] Figure 12 (a) and (b) are schematic diagrams of non-periodic ordered fiber-reinforced composite honeycomb structures with different topological configurations. The corresponding topological configurations are derived from different figures cut out from the Penrose tiling P2 puzzle.

[0033] Figure 13 (a) A non-periodic ordered fiber-reinforced composite honeycomb structure with a topological configuration of a cutout figure from a Penrose tiling P1 puzzle, and its corresponding schematic diagrams of (b) a boat-shaped unit module, (c) a diamond unit module, (d) a pentagonal unit module, and (e) a five-pointed star unit module.

[0034] Figure 14 (a) A non-periodic ordered fiber-reinforced composite honeycomb structure with a topological configuration of a cutout figure from a Penrose tiling P3 puzzle, and its corresponding (b) fat diamond unit module and (c) thin diamond unit module schematic diagram.

[0035] Figure 15 (a) A non-periodic ordered fiber-reinforced composite honeycomb structure with a topological configuration extracted from an Einstein tile puzzle, and its corresponding (b) schematic diagram of a hat unit module.

[0036] In the figure: 1-(longitudinal) side panel for pushing; 2-kite unit module; 3-dart unit module; 4-pin; 5-15-semi-fixed frame shaping module; 16-(transverse) side panel for pushing; 17-(longitudinal) side panel for applying pressure, 19-27-movable frame shaping module, 28-(transverse) side panel for applying pressure; 29-bottom plate; 30-pressing strip; 31-top plate; 32-boat-shaped unit module; 33-diamond-shaped unit module; 34-pentagonal unit module; 35-five-pointed star unit module; 36-fat diamond-shaped unit module; 37-skinny diamond-shaped unit module; 38-hat unit module. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the scope of protection of the present invention is not limited thereto.

[0038] Example 1.

[0039] A device for preparing a non-periodic ordered fiber-reinforced composite honeycomb structure using a figure cut out of a Penrose tiling P2 puzzle as a topological configuration. Figure 1 As shown, it includes side panels 1 and 16 for pushing, a kite unit module 2, a dart unit module 3, a pin 4, semi-fixed frame shaping modules 5 to 15, pressure side panels 17 and 28, a bolt 18, movable frame shaping modules 19 to 27, a bottom plate 29, a pressure strip 30, and a top plate 31.

[0040] Kite unit module 2, dart unit module 3, such as Figure 3 As shown, the shape and size (including side length and height) of the two polygonal cell inner walls included in the non-periodic ordered honeycomb structure are consistent, and are preferably made of a material that is easy to demould (such as polytetrafluoroethylene).

[0041] Semi-fixed frame shaping modules 5 to 15 and movable frame shaping modules 19 to 27, such as Figure 4 As shown, a complementary pattern is established according to the outer edge of the non-periodic ordered pattern required by the design, which is divided into suitable small pieces. It is preferably made of a material that is easy to demold (such as polytetrafluoroethylene) so that the inner frame formed by the combination is consistent with the outer edge of the non-periodic ordered pattern required by the design.

[0042] The preparation method of this embodiment comprises the following steps:

[0043] (1) Cell unit preforming: ① Prepreg cutting: corresponding to the kite cell, the prepreg is cut into rectangular strips, the width of which is consistent with the height of the honeycomb structure and the length of which is the same as the circumference of the kite cell. Similarly, corresponding to the dart cell, the prepreg is cut into rectangular strips, the width of which is consistent with the height of the honeycomb structure and the length of which is the same as the circumference of the dart cell. ② Prepreg coating: Wrap the prepreg strip around the kite unit module 2 for one week. During coating, the prepreg should be kept flat to avoid defects such as wrinkles and bubbles. Repeat the above steps to complete the preforming of a certain number of kite cell units. Similarly, wrap the prepreg strip around the dart unit module 3 for one week to complete the preforming of a certain number of dart cell units, such as Figure 7 shown.

[0044] (II) Assembly and tightening of grid unit: ① Fixation of push side plate and pressure side plate: Push side plates 1 and 16 have 4 threaded holes in the vertical direction, such as Figure 2 As shown, they are fixed to the bottom plate 29 (as shown in FIG. Figure 6 As shown), the two intersect at right angles; the pressure side plates 17 and 28 are provided with four threaded holes in the vertical direction, as shown Figure 5 As shown, they are fixed to the bottom plate 29 by bolts, and the two intersect at right angles. The four side plates form a closed fixed outer frame, as shown in FIG. Figure 8 (a) shown; ② semi-fixed frame shaping module assembly: First, the pin 4 is inserted into the pin hole of the semi-fixed frame shaping module 10 to form a small interference fit together, such as Figure 8 As shown in (b), the other end of the pin 4 is inserted into the groove of the bottom plate 29 (which can be a U-shaped groove or a square groove) to form a transition fit. The two side surfaces of the semi-fixed frame shaping module 10 are respectively against the pushing side plates 1 and 16. Repeat the above steps to insert the semi-fixed frame shaping modules 11, 12, 13, 14, and 15 into the U-shaped groove of the bottom plate 29 with the help of pins, thereby achieving positioning in the horizontal direction and having freedom of movement in the longitudinal direction. Similarly, the semi-fixed frame shaping modules 9, 8, 7, 6, and 5 are inserted into the U-shaped groove of the bottom plate 29 with the help of pins, thereby achieving positioning in the longitudinal direction and having freedom of movement in the transverse direction to adapt to different thickness requirements of the honeycomb cell wall, as shown in FIG. Figure 8 (c) As shown; ③ Grid unit splicing: The preformed kite and dart grid units obtained in step (a) are tightly spliced ​​from the inside to the outside in accordance with the non-periodic ordered pattern required by the design, as shown Figure 8 (d) As shown; ④ Assembly of the movable frame shaping module group: The movable frame shaping modules 19 to 27 are tightly spliced ​​in sequence around the edge of the grid unit, such as Figure 8(e) As shown; ⑤ Pre-tightening of the pressure strips: fit the two pressure strips 30 respectively with the outer sides of the movable frame shaping module group, and then screw in multiple bolts 18 through the threaded holes on the pressure-applying side plates 17 and 28. At this time, half of the inner frame obtained by sequentially enclosing the semi-fixed frame shaping module group and the movable frame shaping module group is against the inner side of the fixed outer frame, and the other half is supported by the horizontal and vertical pressure strips under the action of tightening multiple bolts evenly arranged and applying normal pressure at the same time, so that all preformed grid units are in close contact and compressed in all directions, as shown in FIG. Figure 8 (f) As shown; finally, close the top plate 31.

[0045] (3) Overall heating and pressurizing for curing and molding: Place the entire set of devices after step (2) flatly in an electric blast drying oven, set the heating temperature to 80°C, and maintain it for 30 minutes, then set the heating temperature to 130°C and maintain it for 2 hours, then turn off the power and wait for it to cool naturally, so as to maintain effective pressurization while heating to ensure the curing and molding effect.

[0046] (IV) Demolding and trimming: After the temperature drops to room temperature, take the entire device out of the drying oven, remove the top plate 31 in sequence, loosen the bolts 18, remove the two pressure strips 30 and the movable frame shaping modules 19 to 27, as shown in the following figure: Figure 9 As shown in (a), all kite and dart unit modules are pushed out to complete the demoulding. Figure 9 (b); further, according to the required honeycomb length and width requirements, mechanical processing can be used to remove excess materials and grind burrs to obtain the non-periodic ordered fiber reinforced composite honeycomb structure required by the design, as shown in FIG. Figure 9 (c) shown.

[0047] The prepared non-periodic ordered fiber reinforced composite honeycomb structure was subjected to quasi-static compression test, and the obtained stress-strain curve was as follows Figure 10 As shown, it reflects its engineering application potential with its excellent strength and energy absorption performance.

[0048] Example 2.

[0049] On the basis of Example 1, all preparation devices and molds (blocks) are kept unchanged, and the cutting length of the prepreg strip is modified in step (1) to be equal to 1 times and 2 times the perimeter of the unit module, respectively. Then, the kite and dart grid units are wound for 1 week and 2 weeks respectively during preforming; further, the semi-fixed frame shaping module group is adjusted along the degree of freedom of the U-shaped groove slide on the fixed bottom plate 29, and the preparation steps remain unchanged, and the non-periodic ordered fiber-reinforced composite honeycomb structure with different cell wall thicknesses required by the design can be obtained, such as Figure 11 shown.

[0050] Example 3.

[0051] On the basis of Example 1, all preparation devices and kite unit modules and dart unit modules remain unchanged, and some semi-fixed frame shaping modules and movable frame shaping modules are replaced so that the inner frame formed by sequentially enclosing is consistent with the outer edge of the non-periodic ordered pattern required by the design. The preparation steps remain unchanged, and the non-periodic ordered fiber-reinforced composite honeycomb structure with different topological configurations required by the design can be obtained, such as Figure 12 shown.

[0052] Example 4.

[0053] A non-periodic ordered fiber-reinforced composite honeycomb structure is prepared by taking a cutout figure from a Penrose tiling P1-type puzzle as a topological configuration. On the basis of Example 1, the preparation device is kept unchanged, and a boat-shaped unit module, a diamond-shaped unit module, a pentagonal unit module, and a five-pointed star unit module are customized. The corresponding semi-fixed frame shaping module and the movable frame shaping module are customized according to the outer edge of the non-periodic ordered figure. The preparation steps remain unchanged, and the non-periodic ordered fiber-reinforced composite honeycomb structure required by the design can be obtained, as shown in FIG. Figure 13 shown.

[0054] Example 5.

[0055] A non-periodic ordered fiber-reinforced composite honeycomb structure is prepared by taking a cutout figure from a Penrose tiling P3 puzzle as a topological configuration. On the basis of Example 1, the preparation device is kept unchanged, fat rhombus unit modules and thin rhombus unit modules are customized, and corresponding semi-fixed frame shaping modules and movable frame shaping modules are customized according to the outer edge of the non-periodic ordered figure. The preparation steps remain unchanged, and the desired non-periodic ordered fiber-reinforced composite honeycomb structure can be obtained, as shown in FIG. Figure 14 shown.

[0056] Example 6.

[0057] A non-periodic ordered fiber-reinforced composite honeycomb structure is prepared by taking a cutout pattern from an Einstein tile puzzle as a topological configuration. On the basis of Example 1, the preparation device remains unchanged, a hat unit module is customized, and corresponding semi-fixed frame shaping modules and movable frame shaping modules are customized according to the outer edge of the non-periodic ordered pattern. The preparation steps remain unchanged, and the desired non-periodic ordered fiber-reinforced composite honeycomb structure can be obtained, as shown in FIG. Figure 15 shown.

[0058] The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention are within the scope of protection of the present invention.

[0059] The parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology.

Claims

1. A method for preparing a non-periodic ordered fiber reinforced composite honeycomb structure, characterized in that: The non-periodic ordered honeycomb structure comprises one or more polygonal cells, and the different cells are spliced ​​according to specific geometric rules, but the overall topological configuration is not periodic; the cell walls of the non-periodic ordered honeycomb structure are fiber-reinforced composite materials, and the manufacturing method thereof comprises the following steps: (1) Cell unit preforming: ① Prepreg cutting: corresponding to the polygonal cells, the prepreg is cut into rectangular strips, the width of which is consistent with the height of the honeycomb structure, and the length is related to the perimeter of the polygonal cells and the thickness of the honeycomb cell wall; ② Prepreg wrapping: the prepreg strip is wound on the prefabricated unit modules (2, 3), the number of windings is equal to the strip length divided by the unit perimeter, and the module height is the same as the width of the prepreg strip; repeat the above steps to complete the preforming of the required number of cell units corresponding to different polygonal cells; (2) Assembling and pressing the cell units: ① Fixing the push side panels and the pressure side panels: The push side panels (1, 16) are fixed to the bottom plate (29) by bolt connection, and the two intersect at right angles. Then, the pressure side panels (17, 28) are fixed to the bottom plate (29) by bolt connection, and the two intersect at right angles. These four side panels form a closed outer frame; ② Assembling the semi-fixed frame shaping module group: First, insert the pin (4) into the semi-fixed frame shaping module (5-15), and then insert it into the groove of the bottom plate (29) in order. Each module has the freedom of movement along the slide groove direction to adapt to the different thickness requirements of the honeycomb cell wall; ③ Cell unit splicing : The preformed grid units obtained in step (1) are tightly spliced ​​from the inside to the outside in a non-periodic ordered pattern; ④ Assembling the movable frame shaping module group: The movable frame shaping modules (19-27) are tightly spliced ​​in order around the edges of the grid units; ⑤ Pre-tightening the pressure strips: The two pressure strips (30) are respectively fitted to the outer sides of the movable frame shaping module group, and then a plurality of bolts (18) are screwed in through the threaded holes on the pressure side plates (17, 28), and the two pressure strips (30) are pressed against in the horizontal and vertical directions, so that the grid units can be in close contact and evenly pressurized; finally, the top plate (31) is placed flat on the assembled grid units to complete the assembly of the entire device; (3) Overall heating and pressurizing curing and molding: The entire device assembled in step (2) is placed flat in an electric blast drying oven, the heating temperature is set to 80°C, and maintained for 30 minutes, then the heating temperature is set to 130°C, and maintained for 2 hours, after which the power is turned off and allowed to cool naturally, thereby maintaining effective pressurization while heating to ensure the curing and molding effect; (IV) Demolding and trimming: After the temperature drops to room temperature, take the entire device out of the drying oven, and then: remove the top plate, loosen the bolts (18), remove the two layering strips (30) and the movable frame shaping module (19-27), and then push out all the unit modules (2, 3) to complete the demoulding.

2. The preparation method according to claim 1, characterized in that The topological configuration of the non-periodic ordered honeycomb structure comes from the types of puzzles that have been proven by mathematicians to have non-periodic but ordered characteristics, including Penrose tiling P1, P2, P3 types, and Einstein tile puzzles, which are puzzles that require a piece of graphics to be cut out from an infinite tiling plane.

3. The preparation method according to claim 1, characterized in that The inner frame obtained by sequentially enclosing the semi-fixed frame shaping modules (5-15) and the movable frame shaping modules (19-27) is consistent with the outer edge of the cut-out figure described in claim 2.

4. The preparation method according to claim 1, characterized in that The unit modules (2, 3) are consistent in shape and size with the inner walls of the polygonal cells contained in the non-periodic ordered honeycomb structure, and the pattern formed by sequentially splicing all preformed cell units is consistent with the pattern cut out in claim 2.

5. The preparation method according to claim 1, characterized in that The semi-fixed frame shaping module (5-15) is provided with a pin hole, and a pin (4) is inserted into the hole to form a small interference fit so as to be combined together. The other end of the pin (4) is inserted into the U-shaped groove of the bottom plate (29) to form a transition fit, thereby achieving positioning in a direction perpendicular to the slide groove, and having a degree of freedom of movement along the slide groove direction to adapt to different thickness requirements of the honeycomb cell wall.

6. The preparation method according to claim 1, characterized in that The push-pushing side plates (1, 16) and the pressure-applying side plates (17, 28) are fixed to the bottom plate (29) by bolt connection to form a closed outer frame; half of the inner frame obtained by sequentially enclosing the semi-fixed frame shaping modules (5-15) and the movable frame shaping modules (19-27) is pressed against the inner side of the outer frame, and the other half is pressed against by two horizontal and vertical pressure strips (30) under the tightening action of multiple bolts (18) evenly arranged and simultaneously pressurized in a normal direction, so that all preformed cell units are in close contact and compressed in all directions.

7. The preparation method according to claim 1, characterized in that The unit modules (2, 3) in contact with the prepreg, the semi-fixed frame positioning modules (5-15) and the movable frame shaping modules (19-27) are all made of polytetrafluoroethylene material to facilitate demoulding; other parts, including the side plates for pushing (1, 16), the side plates for applying pressure (17, 28), the bottom plate (29), the pins (4), the pressure strips (30) and the top plate (31), are all made of metal materials to ensure the pressure strength and uniform temperature conduction.

8. The preparation method according to claim 1, characterized in that The preparation steps are applicable to the preparation of various types of topologically non-periodic ordered fiber-reinforced composite honeycomb structures, corresponding to the different graphics cut out from the same puzzle type as described in claim 2. Taking the Penrose tiling P2 type as an example, the configured unit modules (2, 3) remain unchanged, and the semi-fixed frame shaping modules (5-15) and the movable frame shaping modules (19-27) are adjusted; when the puzzle types corresponding to claim 2 are different, the unit modules need to be adjusted at the same time.

9. The preparation method according to claim 1, characterized in that The preparation steps can be adapted to different thickness requirements of the honeycomb structure pore walls, and can not only prepare conventional honeycomb structures with uniform thickness, but also meet variable thickness requirements, such as gradient design.

10. The preparation method according to claim 1, characterized in that The method further comprises step (fifth): after demoulding, removing excess material and grinding burrs by mechanical processing according to the required honeycomb length and width requirements.

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