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Preparation of foam aluminum alloy base wave-absorbing material

A foamed aluminum alloy and wave absorbing material technology is applied in the field of material science to achieve the effects of optimizing wave absorbing properties, improving wave absorbing properties and excellent mechanical properties

Inactive Publication Date: 2008-09-10
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current research reports on porous absorbing materials are relatively rare, and the analysis of their absorbing mechanism is still in the preliminary stage.
Porous metal foam material is a new type of porous lightweight metal material. People have systematically studied its damping, impact resistance, sound absorption and shock absorption, electromagnetic wave shielding and other properties, but few people have studied its absorbing properties.

Method used

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  • Preparation of foam aluminum alloy base wave-absorbing material
  • Preparation of foam aluminum alloy base wave-absorbing material
  • Preparation of foam aluminum alloy base wave-absorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The foamed aluminum alloy with an appearance size of 80mm×80mm, a relative density of 0.148-0.185, and an average pore diameter of 6-7mm is used as the substrate, and the foamed aluminum alloy substrate is washed with room temperature cold water to remove some mechanical debris remaining on the surface and in the pores. Then use a JD-2025B air compressor to spray lye to clean the surface of the foamed aluminum alloy substrate under the condition of a spray pressure of 0.8Mpa. The temperature of the lye is controlled at 60±3°C to prevent the surface of the foamed aluminum alloy substrate from being corroded. ; Immediately rinse with cold water at room temperature after spraying the lye, and then clean it with a KQ-100 ultrasonic cleaner for 15 minutes, using a frequency of 40KHz; then spray the surface with deionized water to remove residual lye; use a hair dryer to shorten the drying time of the surface to avoid The hanging drops of water will erode the surface due to co...

Embodiment 2

[0060] The foamed aluminum alloy with an appearance size of 80 mm × 80 mm, a relative density of 0.148 to 0.185, and an average pore diameter of 6 to 7 mm is used as the substrate, and the surface pretreatment method of the foamed aluminum alloy substrate is the same as in Example 1.

[0061] Take 20g of silicon carbide wave absorbing agent as the filler for wave absorbing paint, add titanate coupling agent JN-108 into the silicon carbide wave absorbing agent, the amount of coupling agent JN-108 is 0.6g, and then add 5ml of diluent, The diluent is a mixture of n-butanol: xylene: propylene glycol methyl ether = 6:4:1, and it is stirred at a speed of 10000 r / min for 30 minutes in a high-shear force dispersing emulsifier.

[0062] Dilute 0.4g of dispersant CH-13F with 5ml of diluent (mixture of n-butanol: xylene: propylene glycol methyl ether = 6:4:1), and pour it into the pretreated wave absorbing agent filler in a glass mortar Mix and grind in medium to complete the dispersion ...

Embodiment 3

[0069] The foamed aluminum alloy with an appearance size of 80 mm × 80 mm, a relative density of 0.148 to 0.185, and an average pore diameter of 6 to 7 mm is used as the substrate, and the surface pretreatment method of the foamed aluminum alloy substrate is the same as in Example 1.

[0070] Take 20g of barium titanate wave absorbing agent as the filler for wave absorbing paint, add titanate coupling agent JN-198 into the barium titanate wave absorbing agent, the amount of coupling agent JN-198 is 0.6g, and then add 5ml of diluted The diluent is a mixed solution of n-butanol:xylene:propylene glycol methyl ether=6:4:1, which is stirred for 30min at a speed of 10000r / min in a high-shear force dispersing emulsifier.

[0071] Dilute 0.4g of dispersant CH-13 with 5ml of diluent (mixture of n-butanol: xylene: propylene glycol methyl ether = 6:4:1), pour it into the pretreated wave-absorbing agent filler in a glass mortar Mix and grind in medium to complete the dispersion of wave ab...

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Abstract

The invention discloses a preparation method for a foam aluminum alloy-based wave absorbing material and includes the steps of a surface pretreatment of the foam aluminum alloy material, a preparation of wave absorbing agent material and a spraying of the foam aluminum alloy material; the preparation method of the invention is characterized in that the foam aluminum alloy material through degreasing and sand spraying treatments is took as a basic body, and a single wave absorbing material or compound wave absorbing materials are coated on the surface of the basic body to prepare a foam aluminum alloy-based absorbing material of single wave absorbing agent or foam aluminum alloy-based absorbing material of compound wave absorbing agent. The product of the invention provides a new thought for a development of wave absorbing material, and a new field for the popularization and application of foam metal materials and establishes theory and technique foundations for the developing of porous material-based wave absorbing materials.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a preparation method of a foamed aluminum alloy-based wave-absorbing material. Background technique [0002] Absorbing materials are developing in the direction of "thin, light, wide, and strong". Studies have shown that the absorbing performance of dense absorbing materials has been significantly improved after being made porous, and the density of the materials can be greatly reduced at the same time. However, the research reports on porous absorbing materials are relatively rare, and the analysis of its absorbing mechanism is still in the preliminary stage. Porous metal foam is a new type of porous lightweight metal material. People have systematically studied its damping, impact resistance, sound absorption and shock absorption, electromagnetic wave shielding and other properties, but few people have studied its absorbing performance. Contents of the in...

Claims

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Application Information

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IPC IPC(8): B05D7/00B05D7/24B05D7/14B05D3/00C23G1/14C23G5/00B24C1/08C09D5/32
Inventor 薛向欣刘欣张瑜
Owner NORTHEASTERN UNIV
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