Mold for preparing composite material curved surface honeycomb structural member and preparation method of structural member

A composite material and honeycomb structure technology, which is applied in the field of preparation of composite curved honeycomb structures, can solve problems such as the inability to prepare an integrated composite curved honeycomb structure, and achieves the effects of high stiffness, uniform pressure, and prevention of falling

Active Publication Date: 2022-03-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved in the present invention is: the existing curved surface honeycomb structure molding process cannot prepare an integrated composite material curved surface honeycomb structure, and a method for preparing a composite material curved surface honeycomb structure is provided

Method used

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  • Mold for preparing composite material curved surface honeycomb structural member and preparation method of structural member
  • Mold for preparing composite material curved surface honeycomb structural member and preparation method of structural member
  • Mold for preparing composite material curved surface honeycomb structural member and preparation method of structural member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1, a method for preparing a honeycomb cylinder of carbon fiber reinforced epoxy resin-based composite material T300:

[0068] like Figure 4 As shown, a mold for preparing a composite material honeycomb cylinder includes a curved bottom mold, a curved honeycomb frame mold, a plurality of honeycomb modules and a base;

[0069] like Figure 5 and Image 6 As shown, the curved surface bottom mold is a steel circular cylinder mold 1. In order to prevent the external pressure from acting on the outside of the vacuum bag when the composite material honeycomb cylinder is formed in the autoclave, because the middle of the circular cylinder mold is hollow, It will force the vacuum bag to move to the hollow part of the circular cylinder mold. If it moves to a certain extent, the vacuum bag will be torn, which will eventually affect the molding quality of the test piece. The two ends of the circular cylinder mold 1 are also equipped with circular cover plates 2 respectiv...

Embodiment 2

[0089] Example 2, a method for preparing a curved honeycomb panel of carbon fiber reinforced epoxy resin-based composite material T300:

[0090] like Figure 11 , Figure 12 As shown, a mold for preparing a composite material curved honeycomb panel includes a curved bottom mold, a curved honeycomb frame mold, a plurality of honeycomb modules and a base;

[0091] Described curved surface base mold is the curved plate 10 made of steel, and the curvature of each point of curved plate 10 is identical;

[0092] The curved honeycomb frame mold is a closed silicone rubber ring mold, and the ring mold includes a frame lower mold 11, a frame upper mold 12, a frame left mold 13 and a frame right mold 14, and the frame lower mold 11 1. The frame left side mold 13, the frame upper mold 12 and the frame right side mold 14 are sequentially connected end to end to form an annular mold, and the curvature of the inner surface of the annular mold is the same as that of the outer surface of th...

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Abstract

The invention discloses a mold for preparing a composite material curved surface honeycomb structural part and a preparation method of the structural part, and relates to a honeycomb structure of a composite material. The problem that an integrated composite material curved surface honeycomb structure cannot be prepared through an existing curved surface honeycomb structure forming technology is solved. A curved surface bottom die is mounted on a base; the curved-surface honeycomb frame mold is arranged on the outer surface of the curved-surface bottom mold, a composite material filling area is defined by the curved-surface honeycomb frame mold, the inner wall of the curved-surface honeycomb frame mold is provided with first grooves and first protrusions, the first grooves and the first protrusions are alternately arranged, and the shape of the inner wall of the curved-surface honeycomb frame mold is matched with the shape of the outer end face of the curved-surface honeycomb structural part; the honeycomb module is arranged in the composite material filling area, the curvature of the inner surface of the honeycomb module is the same as that of the outer surface of the curved surface bottom die, and the shape of the honeycomb module is the same as that of a honeycomb structure of the curved surface honeycomb structural part. The method is mainly used for preparing the curved-surface honeycomb structural member.

Description

technical field [0001] The invention relates to a composite material honeycomb structure, in particular to a method for preparing a composite material curved surface honeycomb structure. Background technique [0002] The honeycomb structure is not only applied to the flat plate structure, but also can form various complex curved surface structures, so as to be suitable for various curved surface shapes. The existing curved surface honeycomb structure mainly has the following processes: [0003] 1) Bend the honeycomb flat structure into a curved honeycomb structure. For the honeycomb flat structure made of aluminum alloy because of its good toughness and soft aluminum honeycomb, it is easier to bend into a curved honeycomb structure. For the composite honeycomb structure because of its lower modulus High and hard, it is not easy to bend into a curved honeycomb structure. Since the hexagonal honeycomb structure is a positive Poisson's ratio structure, if it is forced to bend i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29C33/00
CPCB29C70/342B29C70/54B29C33/00
Inventor 熊健李志彬高英薛鹏程韦兴宇
Owner HARBIN INST OF TECH
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