A method for making a zirconia ceramic of negative poisson's ratio miura-ori origami structure

Abstract

A method for fabricating a negative Poisson's ratio Miura origami-structured zirconia ceramic includes the following steps: Designing a unit cell structure using 3D modeling software; horizontally arranging the unit cells to obtain a single-layer, thicknessless Miura origami structure; mirroring, thickening, and merging the single-layer, thicknessless Miura origami structure to obtain a multi-layered Miura origami structure; importing the model into slicing software for slicing and then 3D printing to form a green body; placing the cleaned green body in a muffle furnace for degreasing and sintering; and obtaining the negative Poisson's ratio Miura origami-structured zirconia ceramic after sintering. By using 3D printing to achieve the stacked Miura origami structure and then sintering it, the mechanical metamaterial of origami is combined with ceramic materials. This not only enhances the toughness of ceramic materials through special structures but also solves the problem of traditional ceramic preparation methods being unable to fabricate complex structures. It features convenience, high precision, and customizability.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of negative Poisson's ratio Miura-ori folded paper structure materials, in particular to a manufacturing method of a negative Poisson's ratio Miura-ori folded paper structure zirconia ceramic. BACKGROUND

[0002] The negative Poisson's ratio metamaterial has excellent shear resistance, impact resistance, fracture resistance, energy absorption and vibration isolation, variable permeability, and curved isotropy, and has the mechanical property of expansion (or contraction) in the vertical direction when subjected to axial tension (or compression), and is also called a tensile expansion structure. The folded paper structure is a kind of tensile expansion structure, and unlike other metamaterials with regular cell structures, the folded paper structure can be designed as a plane and a curved shape to occupy a specific space, which makes them very suitable for engineering applications. Due to its specific topological structure, the folded paper-based metamaterial is anisotropic, and different mechanical properties are exhibited according to the loading direction, and these properties can be controlled to absorb energy in quasi-static or dynamic compression by using different topological structures.

[0003] The ceramic material is an inorganic non-metallic material, and according to the use of the material, it can be mainly divided into two categories: structural ceramics and functional ceramics. Among them, the structural ceramics have excellent mechanical, thermal and chemical properties such as high temperature resistance, erosion resistance, corrosion resistance, high hardness, high strength and low creep rate, and are a kind of advanced ceramics commonly used in various structural components, but it is difficult to prepare a complex structure for a multi-layer folded paper structure by using a traditional ceramic preparation method, and it is difficult to realize processing. Therefore, the preparation of the folded paper structure in the prior art cannot combine the mechanical metamaterial with the ceramic material. SUMMARY

[0004] Therefore, the application provides a manufacturing method of a negative Poisson's ratio Miura-ori folded paper structure zirconia ceramic to solve the above technical problems.

[0005] A manufacturing method of a negative Poisson's ratio Miura-ori folded paper structure zirconia ceramic, comprising the following steps:

[0006] Step S1: using a three-dimensional drawing software to design the structure of a unit cell, determining the unit cell edge length, the angle of the sector angle, and the angle of the dihedral angle;

[0007] Step S2: horizontally arraying the unit cells to obtain a single-layer non-thickness Miura-ori folded paper structure;

[0008] Step S3: performing a mirror image operation on the single-layer non-thickness Miura-ori folded paper structure, and then performing a thickening operation on two single-layer non-thickness Miura-ori folded paper structure groups, the thickening direction being the Z axis and the thickening directions of the two single-layer non-thickness Miura-ori folded paper structures being opposite, to obtain a double-layer thickness Miura-ori folded paper structure;

[0009] Step S4: Mirror image operation is performed on the double-layered Miura-ori folded paper structure, then the mirror image body is moved to make the connection part the same as the corresponding part, then a merging operation is performed to obtain a four-layered Miura-ori folded paper structure;

[0010] Step S5: The model is imported into a slicing software for slicing processing to obtain a printing file in a corresponding format and to perform 3D printing to form a blank;

[0011] Step S6: After printing is completed, the blank is taken off the platform, the surface of the blank is washed with alcohol to remove residual slurry, the cleaned blank is placed in a muffle furnace for degreasing and sintering, and a dense negative Poisson's ratio Miura-ori folded paper structure zirconia ceramic is obtained after sintering is completed.

[0012] Further, in the above step S1, the unit cell is connected by sharing a vertex and a side by four parallelograms with side lengths a and b.

[0013] Further, in the above step S1, the unit cell has a unit cell length of 3 mm, a sector angle of 0°<α<90°, and a dihedral angle of 0°<γ<180°.

[0014] Further, in the above step S1, the drawing software is solidworks three-dimensional drawing software.

[0015] Further, in the above step S4, the stacking mode of the Miura-ori folded paper structure with more layers can be obtained by multiple mirror image operations.

[0016] Further, in the above step S5, DLP photocuring 3D printing technology is used for printing, the slurry composition is 3YSZ powder and photosensitive resin premix liquid, the printing layer thickness is set to 0.04 mm, and the exposure time is 6 s per layer.

[0017] Further, in the above step S5, the export format of the model is STL format, and the slicing software is Chitu software.

[0018] Compared with existing technologies, the zirconia ceramic with a negative Poisson's ratio Miura origami structure provided by this invention uses 3D modeling software to create a single-layer, thicknessless Miura origami structure. Then, this single-layer, thicknessless Miura origami structure is mirrored and thickened, with the thickening direction along the Z-axis and the two single-layer, thicknessless Miura origami structures thickened in opposite directions. This ensures the consistency of the facing surface specifications and the overall structure, resulting in greater in-plane compressive strength and stronger in-plane absorption capacity. The stacked Miura origami structure is formed through 3D printing and then sintered, combining this mechanical metamaterial of origami with ceramic materials. This not only enhances the toughness of ceramic materials through a special structure but also solves the problems of difficult processing of ceramic materials and the inability of traditional ceramic preparation methods to produce complex structures. It features convenience, high precision, and customizability. Attached Figure Description

[0019] Figure 1 A flowchart illustrating a method for manufacturing a negative Poisson's ratio Miura origami-structured zirconia ceramic, as provided in this invention.

[0020] Figure 2 for Figure 1 A schematic diagram of the unit cell structure of a method for fabricating zirconia ceramics with a negative Poisson's ratio and a Miura origami structure.

[0021] Figure 3 for Figure 1 A schematic diagram of the single-layer, thicknessless Miura origami structure of zirconia ceramics with negative Poisson's ratio Miura origami structure.

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of a double-layered, thickened Miura origami structure, which is used in the fabrication method of zirconia ceramics with a negative Poisson's ratio Miura origami structure.

[0023] Figure 5 for Figure 1 A schematic diagram of the four-layer Miura origami structure of zirconia ceramics with negative Poisson's ratio Miura origami structure. Detailed Implementation

[0024] The following provides a more detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0025] like Figure 1 The diagram shown is a flowchart of a method for manufacturing a negative Poisson's ratio Miura origami-structured zirconia ceramic according to the present invention. The method for manufacturing the negative Poisson's ratio Miura origami-structured zirconia ceramic includes the following steps:

[0026] Step S1: design the structure of the unit cell 10 using three-dimensional mapping software, determine the unit cell length, the angle of the sector angle, and the angle of the dihedral angle of the unit cell 10. The unit cell 10 is connected by sharing the vertex and sharing the edge by four parallelograms with edge length a and b. The unit cell length of the unit cell 10 is 3mm, the sector angle is 0°<α<90°, and the dihedral angle is 0°<γ<180°. The mapping software is solidworks three-dimensional mapping software.

[0027] Step S2: arrange the unit cells 10 in horizontal array to obtain a single-layer thickness-free Miura-ori folded paper structure 20.

[0028] Step S3: first mirror image the single-layer thickness-free Miura-ori folded paper structure 20, then perform thickening operation on two single-layer thickness-free Miura-ori folded paper structures 20, the thickening direction is Z axis and the thickening directions of the two single-layer thickness-free Miura-ori folded paper structures 20 are opposite, so as to ensure the consistency of the facing specifications and the overall structure, to obtain a double-layer thickness-free Miura-ori folded paper structure 30.

[0029] Step S4: mirror image the double-layer thickness-free Miura-ori folded paper structure 30, then move the mirror image body to make the connection part same as the corresponding part, then perform merging operation to obtain a four-layer Miura-ori folded paper structure 40. The stacking mode of the Miura-ori folded paper structure with more layers can be obtained by multiple mirror images as needed.

[0030] Step S5: import the model into the slicing software for slicing processing to obtain a printing file in a corresponding format and perform 3D printing to form a blank. Specifically, use DLP light curing 3D printing technology for printing, the slurry composition is 3YSZ powder and photosensitive resin premix liquid, the printing layer thickness is set to 0.04mm, and the exposure time is 6s per layer. The export format of the model is STL format, and the slicing software is Chitu software.

[0031] Step S6: after printing, take the blank from the platform, wash the residual slurry on the surface of the blank with alcohol, and place the cleaned blank in a muffle furnace for debinding and sintering. After sintering, a dense negative Poisson's ratio Miura-ori folded paper structure zirconia ceramic is obtained.

[0032] Compared with the prior art, the zirconia ceramic negative poisson ratio Miura-ori paper folding structure provided by the application draws a single-layer non-thickness Miura-ori paper folding structure 20 through three-dimensional mapping software, then performs mirror image and thickening operations on the single-layer non-thickness Miura-ori paper folding structure 20, the thickening direction is the Z axis and the thickening directions of the two single-layer non-thickness Miura-ori paper folding structures 20 are opposite, so as to ensure the consistency of the opposite surface specifications and the overall structure, and the paper folding structure has the characteristics of greater in-plane compressive strength and stronger in-plane absorption capacity. The stacked Miura-ori paper folding structure is formed through 3D printing and then sintered, the paper folding structure mechanical super material is combined with the ceramic material, not only can the toughness of the ceramic material be improved through the special structure, but also the problems that the ceramic material is difficult to process and the traditional ceramic preparation method is difficult to prepare a complex structure can be solved, and the paper folding structure has the characteristics of convenience, high precision, free customization and the like.

[0033] The above is only a preferred embodiment of the application and is not used to limit the protection scope of the application, and any modification, equivalent replacement or improvement within the spirit of the application is covered in the claim scope of the application.

Claims

1. A method for manufacturing a zirconia ceramic of a negative Poisson's ratio Miura-origami structure, comprising the following steps: Step S1: designing a structure of a unit cell using three-dimensional drawing software, determining a unit cell edge length, an angle of a sector angle, and an angle of a dihedral angle of the unit cell; Step S2: horizontally arraying the unit cell to obtain a single-layer thickness-free Miura-origami structure; Step S3: performing a mirroring operation on the single-layer thickness-free Miura-origami structure, and then performing a thickening operation on the two single-layer thickness-free Miura-origami structures in opposite directions along the Z axis to obtain a double-layer thickness-free Miura-origami structure; Step S4: performing a mirroring operation on the double-layer thickness-free Miura-origami structure, then moving the mirror body to connect the same parts, and then performing a merging operation to obtain a four-layer Miura-origami structure; Step S5: importing the model into slicing software for slicing processing to obtain a printing file in a corresponding format and perform 3D printing to form a green body; Step S6: after printing is completed, the green body is removed from the platform, the surface of the green body is washed with alcohol to remove residual slurry, the cleaned green body is placed in a muffle furnace for debinding and sintering, and a dense negative Poisson's ratio Miura-origami structure zirconia ceramic is obtained after sintering.

2. The method of making a negative Poisson's ratio Miura-ori folded zirconia ceramic structure according to claim 1, wherein: In the above step S1, the unit cell is formed by connecting four parallelograms with edge lengths a and b through a common vertex and a common edge.

3. The method of making a negative Poisson's ratio Miura-ori folded zirconia ceramic structure of claim 1, wherein: In the above step S1, the unit cell edge length of the unit cell is 3 mm, the sector angle is 0° < a < 90°, and the dihedral angle is 0° < y < 180°.

4. The method of making a negative Poisson's ratio Miura-ori folded zirconia ceramic structure of claim 1, wherein: In the above step S1, the drawing software is solidworks three-dimensional drawing software.

5. The method of making a negative Poisson's ratio Miura-ori folded zirconia ceramic structure of claim 1, wherein: In the above step S4, the stacking method of the Miura-origami structure with more layers can be obtained by multiple mirroring.

6. The method of making a negative Poisson's ratio Miura-ori folded zirconia ceramic structure of claim 1, wherein: In the above step S5, DLP photocuring 3D printing technology is used for printing, the slurry composition is 3YSZ powder and photosensitive resin premix liquid, the printing layer thickness is set to 0.04 mm, and the exposure time is 6 s per layer.

7. The method of making a negative Poisson's ratio Miura-ori folded zirconia ceramic structure of claim 1, wherein: In the above step S5, the export format of the model is STL format, and the slicing software is Chitu software.

Images