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Multifunctional thermal protection material and preparation method thereof

A heat protection material and multi-functional technology, applied in separation methods, chemical instruments and methods, metal material coating technology, etc., can solve problems such as corrosion resistance and stealth performance, and improve the ability to resist air erosion, Facilitate long-term storage and prevent oxidation reaction

Active Publication Date: 2018-09-04
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in the face of high-speed aircraft, the thermal protection system mainly focuses on the ablation performance, and rarely can take into account the corrosion resistance and stealth performance. All-in-one thermal protection technology

Method used

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  • Multifunctional thermal protection material and preparation method thereof
  • Multifunctional thermal protection material and preparation method thereof

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preparation example Construction

[0051] Such as figure 1 as shown, figure 1 A flow chart of an embodiment of a method for preparing a multifunctional thermal protection material is provided, including:

[0052] After the mastoid structure that meets the needs is determined through simulation calculations, the mastoid structure is molded using a periodic mask, specifically: according to the results of the simulation calculation, adaptively design the aperture and arrangement parameters in the mask, Wherein, the aperture size of the mask is adaptively designed based on the bottom layer of the sub-absorbing layer, and the hole arrangement can be designed according to the periodic arrangement of the above-mentioned mastoids; the mask is designed using 3D printing technology get, such as figure 2 shown;

[0053] Based on the above mask, the specific preparation process is as follows:

[0054] Disperse the material used in the bottom sub-absorbing layer in the room temperature curing adhesive;

[0055] Cooper...

Embodiment 1

[0060] In the mastoid structure, the mastoid units arranged in a regular hexagon are arranged periodically. The papillae with a diameter of 500 nanometers are made of 30 nanometer ferric oxide particles mixed with phenolic resin as the bottom layer, and the mastoid units are arranged symmetrically in a regular hexagon. The side length of the hexagon is 800 nanometers. Based on the base layer, a layer of silicon dioxide with a diameter of 1.06 microns in thickness, a layer of chromium selenide with a thickness of 0.78 microns, and a layer of zirconia with a thickness of 8.21 microns are respectively prepared from bottom to top. Its related properties are shown in Table 1. The contact angle of 145° indicates that its surface is superhydrophobic, which can effectively isolate the erosion of water vapor; its normal reflectivity shows that it has a stealth effect on infrared radar in the 1-2 micron band; oxygen-acetylene line ablation The rate of 0.06mm / s shows that the nanostructur...

Embodiment 2

[0064] In the mastoid structure, the mastoid units arranged in a regular quadrilateral are arranged periodically. The papillae with a diameter of 1 micron are made of 100 nanometer ferric oxide particles mixed with phenolic resin as the bottom layer. The mastoid units are arranged symmetrically in a regular quadrilateral, and the side length of the quadrilateral 1.5 microns, based on the base layer, a layer of silicon dioxide with a diameter of 1.86 microns, zinc selenide with a thickness of 1.56 microns, and zirconia with a thickness of 10 microns were prepared from bottom to top. Its related properties are shown in Table 2. The contact angle of 137° indicates that its surface is superhydrophobic, which can effectively isolate the erosion of water vapor; its normal reflectance indicates that it has a stealth effect on the far-infrared radar in the 10.6 micron band; the oxygen-acetylene line ablation rate of 0.02mm / s indicates that the nanometer The structure has anti-ablation...

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Abstract

The invention provides a multifunctional thermal protection material and a preparation method thereof. The multifunctional thermal protection material comprises a substrate, a mastoid structure distributed on the substrate, wherein the mastoid structure is composed of periodically arranged mastoid units with micro-nano size; the mastoid units comprise multiple same mastoids, the multiple same mastoids are regularly arranged in a regular polygon way; and the distance between the adjacent mastoids is same in the mastoid units; for any mastoid, the appearance of the mastoid is in smooth connection, and the mastoid comprises a wave absorbing layer and a thermal protection layer; the thermal protection layer is arranged at the outside of the wave absorbing layer, and the wave absorbing layer comprises server layers of sub wave-absorbing layers. A nanometer hydrophobic structure, a nanometer stealth structure and the thermal protection coating are effectively and organically combined, the functional nanometer particles are arranged as a periodic ordered structure, so that the periodic ordered structure has the heat protection, stealth and hydrophobic and like multiple functions, and themultifunctional thermal protection material is suitable for the protection of the surface of the aerospace flight vehicle, ocean ships and submarine.

Description

technical field [0001] The invention provides a multifunctional thermal protection material and a preparation method thereof, belonging to the technical field of nanocomposite materials. Background technique [0002] In order to ensure that the internal electronic components of the aircraft are not corroded by external water vapor during storage and transportation, hydrophobic polymers such as hydrophobic paint are generally used for hydrophobic treatment. However, long-term storage may cause the aging of the hydrophobic polymer on the surface, and the hydrophobic groups will become invalid, thereby affecting its hydrophobic performance. In nature, the lotus leaf has a reputation of "coming out of the mud without being stained". The dew and raindrops rolling over the lotus leaf can often take away dust and dirt. The droplets on the surface of the lotus leaf present a contact angle of about 160° . The observation results show that there are dendritic nanostructures on the m...

Claims

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Application Information

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IPC IPC(8): B81B1/00B81C1/00H01Q15/00
CPCH01Q15/0013H01Q15/0026B81B1/00B81C1/00103B81C1/00214
Inventor 许学伟谢永旺夏雨许孔力嵇培军
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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