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Fiber metal three-dimensional composite board and preparation method thereof

A fiber metal and composite board technology, applied in metal layer products, chemical instruments and methods, lamination, etc., can solve the problems of affecting the comprehensive mechanical properties of the laminate, weak bonding force between the metal layer and the fiber, weakening the overall strength of the structure, etc. , to achieve the effect of improving the level of lightweight design and impact resistance, excellent structural integrity, and good optimizability

Active Publication Date: 2020-08-14
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although fiber metal laminates have a series of excellent properties, the bonding force between the metal layer and the fibers is weak and the structure is unstable, which limits its application.
Most of the existing fiber-metal laminates adopt alternate lay-up technology, so that the metal and fiber composite materials are combined in the one-dimensional thickness direction, so the interface strength of the two will affect the comprehensive mechanical properties of the laminate, especially under the action of impact load. In this case, the delamination of the interface will significantly weaken the overall strength of the structure, and this structure also has certain limitations in terms of lightweight design.

Method used

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  • Fiber metal three-dimensional composite board and preparation method thereof
  • Fiber metal three-dimensional composite board and preparation method thereof
  • Fiber metal three-dimensional composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a fiber metal three-dimensional composite panel, comprising the following steps:

[0026] Step 1: Punch square holes on an aluminum alloy plate with a thickness of 0.5mm to form a regular array of holes. The side length of the holes is 3mm and the hole spacing is 3mm. Weave the basalt fiber roving with a width of 3mm into the perforated aluminum alloy plate in plain weave on, formed as figure 1 fiber metal single-layer panels;

[0027] Step 2, stack two layers of fiber metal single-layer boards in the same direction, and place them on such as figure 2 Into the vacuum bag of the flat mold, introduce epoxy resin, evacuate until the air is completely extracted, close the valve, export excess epoxy resin, and then cure at 70°C for 180min to obtain a fiber-metal three-dimensional composite board, such as image 3 .

Embodiment 2

[0029] A method for preparing a fiber metal three-dimensional composite panel, comprising the following steps:

[0030] Step 1: Punch square holes on an aluminum alloy plate with a thickness of 0.5mm to form a regular array of holes. The side length of the holes is 3mm and the hole spacing is 3mm. Weave the basalt fiber roving with a width of 3mm into the perforated aluminum alloy plate in plain weave On, forming a fiber metal single-layer board;

[0031] Step 2, stack two layers of fiber metal single-layer boards and place them on such as Figure 4 Into the vacuum bag of the single-curvature mold, introduce epoxy resin, evacuate until the air is completely extracted, close the valve, export excess epoxy resin, and then cure at 70°C for 180min to obtain a single-curvature fiber-metal three-dimensional composite panel, such as Figure 5 .

[0032] Among them, the square hole on the aluminum alloy plate can be replaced by any polygonal hole.

Embodiment 3

[0034] A method for preparing a fiber metal three-dimensional composite panel, comprising the following steps:

[0035] Step 1: Punch square holes on an aluminum alloy plate with a thickness of 0.5mm to form a regular array of holes with a diameter of 3mm and a hole spacing of 3mm. Weave basalt fiber rovings with a width of 3mm into the perforated aluminum alloy plate in a twill weave , forming a fiber metal single-layer board;

[0036] Step 2, stack the two-layer fiber metal single-layer boards and place them on such as Figure 4 Introduce epoxy resin into the vacuum bag of the single-curvature mold, evacuate until the air is completely extracted, close the valve, export excess epoxy resin, and then cure at 70°C for 180min to obtain a single-curvature fiber metal three-dimensional composite panel.

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Abstract

The invention discloses a fiber metal three-dimensional composite board and a preparation method thereof. The fiber metal three-dimensional composite board is formed by stacking fiber metal three-dimensional single-layer boards in the vertical direction, each fiber metal single-layer board comprises a perforated metal board and fiber roving, and the fiber roving penetrates through holes in the metal boards and is woven on the metal boards to form a three-dimensional structure. The preparation method comprises the following steps: punching a metal plate to form a hole array, carrying out plainweaving, twill weaving or satin weaving on fiber rough yarns on the metal plate with holes to form a fiber metal single-layer plate, stacking the fiber metal single-layer plates in a multi-layer modeto the required thickness, and forming the fiber metal three-dimensional composite material in a vacuum pouring mode. According to the invention, the binding force between the metal and the fiber is strong, the structure is stable, the characteristics of light weight, high strength, fatigue resistance, excellent impact resistance and the like of the traditional fiber metal laminated plate are retained, and meanwhile, the fiber metal three-dimensional composite board has excellent structural integrity and good optimizability.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a fiber metal three-dimensional composite board and a preparation method thereof. Background technique [0002] The traditional fiber-metal laminate is an interlayer hybrid composite structure formed by alternately laying metal sheets and fiber-reinforced resins in the thickness direction under a certain temperature and pressure. Compared with the shortcomings of traditional metals such as high density, weak fatigue resistance, and low strength, fiber metal laminates combine the advantages of metal and fiber composite materials and overcome most of their shortcomings. Structural materials with great application prospects in high-tech fields such as military, automobile, etc. [0003] Although fiber-metal laminates have a series of excellent properties, the bonding force between the metal layer and fibers is weak and the structure is unstable, which limits its application. Mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B15/18B32B15/20B32B7/12B32B3/08B32B3/24B32B37/10B32B37/12B32B38/04
CPCB32B15/01B32B15/011B32B15/016B32B15/18B32B15/20B32B3/266B32B3/08B32B7/12B32B37/1018B32B37/12B32B38/04B32B2037/1253B32B2038/042B32B2262/101B32B2262/106B32B2262/10B32B2262/0269B32B2307/558B32B2307/552
Inventor 李鑫马小敏徐锐卢明辉
Owner NANJING UNIV
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