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Method for functionally modifying composite material laminated board by radar absorbing nano-membrane

A composite material layer and composite material technology, applied in the field of stealth material science, can solve the problems of fiber macroscopic flow velocity mismatch, uncontrollability, dense pores and layered defects, etc., achieve the dual functions of excellent load bearing and stealth, and wide application foreground effect

Inactive Publication Date: 2016-03-09
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the filling of wave absorbing agent will cause the viscosity of the resin matrix to increase and the fluidity to deteriorate, resulting in a mismatch between the microscopic infiltration of the resin matrix on the fibers and the macroscopic flow velocity, thereby causing the formation of dense pores and delamination defects in the fiber bundles and between fiber layers Secondly, the dispersion and stability of nano wave absorbing agent in the resin matrix are poor, and it is easy to agglomerate in the process of compounding with fibers, so the wave absorbing performance of the composite material is greatly affected by the preparation process, and there are performance gap Instability and Uncontrollability

Method used

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  • Method for functionally modifying composite material laminated board by radar absorbing nano-membrane
  • Method for functionally modifying composite material laminated board by radar absorbing nano-membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Nanoparticle selection: a blend of carbonyl iron powder and ferrite, with a particle size of 20nm;

[0032] Polyarylether resin selection: polyaryletherketone;

[0033] The solvent used for configuring the resin solution is selected from: N,N-dimethylacetamide;

[0034] Continuous fiber selection: carbon fiber;

[0035] Resin matrix selection: bismaleimide resin;

[0036] Forming process selection: molding process;

[0037] as attached figure 1 Shown, a kind of nano wave-absorbing thin film functionalization method for composite material laminated board, comprises the steps:

[0038] (1) The blend of nano-carbonyl iron powder and ferrite and polyaryletherketone is prepared into a uniform and stable resin solution

[0039] Specifically: use N,N-dimethylacetamide as a solvent, add a blend of nano-carbonyl iron powder and ferrite with a concentration of 10% by mass, and perform ultrasonic dispersion treatment for 2 hours. The ultrasonic treatment power is 1000W. The ...

Embodiment 2

[0048] In this example

[0049] Nanoparticle selection: carbon nanotubes with a particle size of 5nm;

[0050] Polyarylether resin selection: polyaryletherketone;

[0051] The used solvent of configuration resin solution is selected: dichloromethane;

[0052] Continuous fiber selection: glass fiber;

[0053] Resin matrix selection: epoxy resin system;

[0054] Forming process selection: molding process;

[0055] as attached figure 1 Shown, a kind of nano wave-absorbing thin film functionalization method for composite material laminated board, comprises the steps:

[0056] (1) Prepare carbon nanotubes and polyaryletherketone into a uniform and stable resin solution

[0057] Specifically: use dichloromethane as a solvent, add carbon nanotubes with a mass percentage of 5%, perform ultrasonic dispersion treatment for 0.5h, the ultrasonic treatment power is 300W, and the frequency is 20KHz, and then add polyaryletherketone resin, and the amount of resin is 15% of the amount ...

Embodiment 3

[0066] Nanoparticle selection: carbonyl iron powder, particle size is 60nm;

[0067] Selection of polyarylether resin: polyarylether sulfone;

[0068] The solvent used for configuring the resin solution is selected: N-methylpyrrolidone;

[0069] Continuous fiber selection: carbon fiber;

[0070] Resin matrix selection: bismaleimide resin;

[0071] Forming process selection: autoclave forming process;

[0072] as attached figure 1 Shown, a kind of nano wave-absorbing thin film functionalization method for composite material laminated board, comprises the steps:

[0073] (1) Prepare nano-carbonyl iron powder and polyarylether sulfone into a uniform and stable resin solution

[0074] Specifically: N-methylpyrrolidone is used as a solvent, nano-carbonyl iron powder with a mass percentage of 10% is added, and ultrasonic dispersion treatment is performed for 2 hours. The ultrasonic treatment power is 1000W and the frequency is 40KHz. 30% of the amount of solvent used, mechanic...

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Abstract

The invention discloses a method for functionally modifying a composite material laminated board by a radar absorbing nano-membrane. The method comprises the following steps: preparing a uniform and steady resin solution by using nano particles and polyarylether resin; (2) preparing a radar absorbing nano-membrane by using the prepared resin solution through a film preparation process; (3) sufficiently dipping continuous filament or fabric and resin matrix to prepare a composite material prepreg; (4) covering the radar absorbing nano-membrane among the layers of the composite material prepreg, and preparing structure / function integrated cloaking composite material laminated board according to the composite material forming process. The method disclosed by the invention has the beneficial effects that the wave-absorbing functional layer is integrated into the preparation process of the composite material laminated board, and the integral wave-absorbing function and mechanical property of the composite materials can be greatly improved with low cost synchronously. The product has dual excellent functions of loading and cloaking and wide application prospect in the field of aerospace engineering.

Description

technical field [0001] The invention relates to a preparation method of a stealth composite material, in particular to a preparation method of a nano wave-absorbing film functionalized modified composite material laminate, and belongs to the field of stealth material science and technology. Background technique [0002] The rapid development of stealth technology has put forward comprehensive requirements for radar absorbing materials to be thin, wide, light, and strong. The development of stealth composite materials with high-efficiency absorbing performance and excellent mechanical properties is one of the technical breakthroughs to meet this requirement. Structural wave-absorbing composite material is a composite material developed on the basis of advanced composite materials with both load-bearing and wave-absorbing functions. Its advantages are that it can greatly reduce the mass of the aircraft, and the structure is designable and can be formed into various shapes. Com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/12B32B27/18B32B37/06B32B37/10B32B17/02B32B9/00B32B27/02B32B27/28
CPCB32B5/02B32B27/06B32B27/08B32B27/12B32B27/18B32B27/285B32B33/00B32B37/06B32B37/10B32B2260/021B32B2260/046B32B2262/0261B32B2262/101B32B2262/106B32B2307/20B32B2307/212B32B2307/50C08J5/18C08K3/08C08K3/22C08K7/06C08K7/14C08K7/24C08L63/00C08L71/10C08L77/10C08L79/04C08L79/08C08L81/06D01D5/00D04H1/728
Inventor 于祺陈平唐超王荣超陆春马克明熊需海
Owner SHENYANG AEROSPACE UNIVERSITY
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