High-strength honeycomb structure and its 3D printing method

A honeycomb structure and 3D printing technology, applied in the field of 3D molding, can solve the problems of honeycomb manufacturing without customization, easy crushing, and low honeycomb compressive strength, so as to expand the manufacturing field and application field, increase the lateral connection force, The effect of improving lateral compression resistance

Active Publication Date: 2021-06-22
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The material of the honeycomb is uniform, which is not conducive to further meeting the design requirements of light weight and high strength: the internal structure of the honeycomb is homogeneous on the x-y plane, and does not change according to certain rules, which cannot meet the load-bearing requirements;
[0004] 2. The compressive strength of the honeycomb is low: the material of the honeycomb is generally homogeneous materials such as paper and aluminum, which are easily crushed by the pressure from the axial direction;
[0005] 3. Honeycomb manufacturing does not have the characteristics of customization
Honeycomb manufacturing generally uses the form of large-scale equipment manufacturing and multi-step multi-process molding, which does not meet the design and product requirements of miniaturization and customization, and a new and fast manufacturing method is urgently needed

Method used

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  • High-strength honeycomb structure and its 3D printing method
  • High-strength honeycomb structure and its 3D printing method
  • High-strength honeycomb structure and its 3D printing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Such as figure 1 As shown, the design and molding form of the hexagonal honeycomb

[0076] Main material: 12K carbon fiber / thermosetting resin prepreg tape

[0077] Honeycomb size: the side length of the hexagonal unit is 10mm, the wall thickness is 2mm, the unit size is uniform and evenly distributed; the thickness of the partition is 2mm, and it is divided into 4 pieces in height, the interval is 150mm for the upper two layers, and the interval for the last layer is 100mm.

[0078] route plan:

[0079] The starting position of the first floor is located in the leftmost unit, and the walking interval is 1 unit structure;

[0080] The starting position of the second floor is located in the leftmost unit, and the walking interval is 2 units;

[0081] The starting position of the third floor is located in the second left unit, and the walking interval is 1 unit;

[0082] The starting position of the fourth floor is located in the second left unit, and the walking inte...

Embodiment 2

[0086] Such as figure 2 As shown, the design and molding form of the rectangular honeycomb core material

[0087] Main material: carbon fiber / thermoplastic resin prepreg tape

[0088] Honeycomb size: the side length of the rectangular unit is 10mm, the wall thickness is 1mm, the unit size is uniform and evenly distributed; the thickness of the partition is 1mm, and it is divided into 3 pieces in height, and the interval is divided into two dimensions with heights of 200mm and 100mm respectively, and the height of adjacent units different.

[0089] route plan:

[0090] The starting position of the first floor is located in the leftmost unit, and the walking interval is 1 unit structure;

[0091] The starting position of the second floor is located in the leftmost unit, and the walking interval is 2 units;

[0092] The starting position of the third floor is located in the second left unit, and the walking interval is 1 unit;

[0093] The starting position of the fourth fl...

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Abstract

The invention provides a high-strength honeycomb structure and a 3D printing molding method thereof. The honeycomb structure includes a plurality of columnar honeycomb units arranged topologically. The honeycomb unit is a cavity with openings at both ends and an empty interior. The honeycomb unit uses continuous fiber as the main raw material and is formed by 3D printing, and the direction of the continuous fiber is consistent with the length direction of the honeycomb unit. The present invention prepares the honeycomb structure by using continuous fiber as the main raw material by 3D printing molding method, and sets the direction of the continuous fiber to be consistent with the length direction of the columnar honeycomb unit, so that the direction of the continuous fiber is consistent with the direction of mechanical transmission, and the direction of the honeycomb structure The main part is used for mechanical transmission, reducing the material distribution in the non-loading direction, and utilizing the high compressive performance of continuous fibers to achieve high load-bearing requirements under limited weight.

Description

technical field [0001] The invention relates to the technical field of 3D molding, in particular to a high-strength honeycomb structure and a 3D printing molding method thereof. Background technique [0002] Honeycomb is currently one of the preferred core materials in the field of composite material design. It has the advantages of light weight, high compressive strength, low density, and convenient application. However, with the expansion of composite material application fields, the complexity of component requirements and further lightweight High strength and other requirements, the honeycomb presents its own shortcomings, mainly in the following aspects: [0003] 1. The material of the honeycomb is uniform, which is not conducive to further meeting the design requirements of light weight and high strength: the internal structure of the honeycomb is homogeneous on the x-y plane, and does not change according to certain rules, which cannot meet the load-bearing requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/141B33Y30/00B32B3/12
CPCB32B3/12B33Y30/00B29C64/141
Inventor 毕向军唐中华张帅张昊方旭东
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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