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Rectangular pyramid structural Cf/SiC-ZrC bionic gradient dot matrix composite material flat plate and preparation method thereof

A technology of composite materials and quadrangular pyramids, applied in chemical instruments and methods, layered products, ceramic layered products, etc., can solve the problems of poor anti-oxidation and ablation performance, poor chemical stability, etc.

Active Publication Date: 2014-06-18
HARBIN UNIV OF SCI & TECH
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  • Summary
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Problems solved by technology

[0004] The present invention aims to solve the technical problems of the existing C / SiC lattice structure composite materials with poor oxidation and ablation performance in long-term extreme environments and poor chemical stability in high-temperature environments, and provides a quadrangular pyramid configuration C f / SiC-ZrC biomimetic gradient lattice composite material flat plate and its preparation method

Method used

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  • Rectangular pyramid structural Cf/SiC-ZrC bionic gradient dot matrix composite material flat plate and preparation method thereof
  • Rectangular pyramid structural Cf/SiC-ZrC bionic gradient dot matrix composite material flat plate and preparation method thereof
  • Rectangular pyramid structural Cf/SiC-ZrC bionic gradient dot matrix composite material flat plate and preparation method thereof

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specific Embodiment approach 1

[0028] Specific embodiment 1: This embodiment is quadrangular pyramid configuration C f / SiC-ZrC bionic gradient lattice composite material flat plate, composed of upper panel 1, lower panel 2, and quadrangular pyramid cells formed by gradient arrangement of lattice core 3 between the upper and lower panels, and is characterized in that: The upper panel 1 and lower panel 2 are composed of C f / SiC-ZrC composite material, the gradient lattice core 3 is made of C f / SiC-ZrC composite material, the lattice core between the upper plate 1 and the lower plate 2 is arranged in a gradient.

[0029] The quadrangular pyramid configuration C provided by the present invention f / SiC-ZrC biomimetic gradient lattice composite plate preparation method prepared by the quadrangular pyramid configuration C f / SiC-ZrC bionic gradient lattice composite plate, which not only has the excellent characteristics of lattice structure of lattice material, but also has the characteristics of functionally grad...

specific Embodiment approach 2

[0031] The second embodiment: The difference between this embodiment and the first embodiment is that the particle size of ZrC is 1.20 μm. Others are the same as the first embodiment.

specific Embodiment approach 3

[0032] Specific embodiment three: the quadrangular pyramid configuration C of specific embodiment one f The preparation method of / SiC-ZrC biomimetic gradient lattice composite plate is specifically completed by the following steps:

[0033] 1. Mix polycarbosilane, butyl zirconate, divinylbenzene, xylene and tetrahydrofuran to obtain an impregnating solution; wherein the mass ratio of divinylbenzene to polycarbosilane is 0.4:1, and the ratio of xylene to polycarbosilane is The mass ratio is 0.1:1, the mass ratio of tetrahydrofuran to polycarbosilane is 2:1, and the mass ratio of butyl zirconate to polycarbosilane is 1:1;

[0034] 2. Punch m rows×n columns of array through holes on the carbon fiber cloth I to obtain a perforated carbon fiber cloth I; punch (m+1) rows×(n+1) columns of array through holes on the carbon fiber cloth II, Obtain the through-hole carbon fiber cloth II; the through holes in the first row and the first column of the array of through holes on the through-hole...

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Abstract

The invention discloses a rectangular pyramid structural Cf / SiC-ZrC bionic gradient dot matrix composite material flat plate and a preparation method thereof, and relates to a dot matrix gradient composite material and a preparation method thereof. The technical problems that the conventional C / SiC dot matrix structure composite material is low in anti-oxidization ablation performance under an extreme environment for a long time and low in chemical stability under a high-temperature environment are solved. The rectangular pyramid structural Cf / SiC-ZrC bionic gradient dot matrix composite material flat plate consists of an upper panel, a lower panel and rectangular pyramid unit cells which are gradiently arranged between the upper panel and the lower panel around a dot matrix core. The preparation method comprises the steps of inserting carbon fibers in soaking liquid obtained by mixing polycarbosilane and the like into a rectangular pyramid structural framework prepared by a carbon fiber cloth technology for the soaking liquid, then soaking the framework in the same soaking liquid, and performing solidification and cracking treatment. The rectangular pyramid structural Cf / SiC-ZrC bionic gradient dot matrix composite material flat plate is applied to the fields of noise reduction, electromagnetic radiation shielding, impact resistance, heat insulation, heat conduction reduction and oxidization burning resistance.

Description

Technical field [0001] The invention relates to a lattice gradient composite material and a preparation method thereof. Background technique [0002] The near-space super-sonic vehicle has the characteristics of short response time, high probability of defense and penetration, fast flight speed, and accuracy in long-range strikes. It has become a forward-looking and strategic weapon and equipment, which has attracted the attention of the military of various countries. All military powers in the world regard the research and development of hypersonic vehicles and related weapons as a national security strategic goal, which is the main development direction of the world's aerospace industry. Hypersonic aircraft must maintain a long time in the air, high-speed flight state, can withstand harsh flight thermal environment and aerodynamic loads, and require materials that have the functions of light weight, bearing capacity, heat resistance, and heat insulation. Lattice material is an...

Claims

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Application Information

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IPC IPC(8): B32B3/26B32B5/08B32B18/00C04B35/80C04B35/56C04B35/622
Inventor 曾涛成夙杨帆方岱宁
Owner HARBIN UNIV OF SCI & TECH
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