Heat insulation, heat preservation, sound insulation and noise reduction integrated material and preparation method thereof
A heat insulation and material structure technology, applied in chemical instruments and methods, aerospace vehicle heat protection devices, sound-generating devices, etc., can solve problems such as poor bonding force, coating of materials with difficult and complex shapes, and low output
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[0024] A method for preparing an integrated material for thermal insulation, sound insulation and noise reduction, comprising the following steps:
[0025] First, mechanical implantation is used (mechanical implantation can diversify the design of functional phases, such as substrate material, shape, size; gap filling aerogel; transition layer thickness, etc.) to implant functional phases on the surface of the high-strength alloy matrix. Correspondingly arranged at equal intervals, the inner surface is smooth and free of cracks, and filled with dense materials to form a transition layer; then through the progressive micro-nano metal surface modification technology (MIMST), that is, supplemented by ultrasonic excitation, contact with the reconstruction tool On the surface of the base material, the modified tool is rotated in a local area and the material surface is compressed, and the trajectory of the tool is controlled by programming. When it passes through the entire surface,...
Embodiment 1
[0034] An integrated material for thermal insulation and sound insulation and noise reduction, its structure is as follows: figure 2 As shown, it is divided into a thermal insulation transition layer with surface texture, a void and implant functional phase with thermal insulation, vibration absorption, and noise reduction functions, and a metal matrix that plays a load-bearing role.
[0035] In this example, regarding the thermal insulation function, a material 1 model is established. The overall model is 120mm×120mm×20mm, and 64 round holes are arranged at equal intervals on the processing surface. After CNC processing, a metal-based SiC ceramic with a thickness of 2mm is formed. (or near-ceramic) functional surface; the remaining area of the round hole is set to SiO2 airgel with a height of 0.5mm and a radius of 2mm; the rest of the matrix is aluminum alloy. The above structure forms an overall structure, that is, an integrated structure of heat insulation, sound insul...
Embodiment 2
[0040] In this embodiment, regarding the sound insulation and noise reduction function, in order to verify the noise reduction effect of the gap, a material 4 model is established, and the structure is as follows Figure 6 As shown, the overall model is 120mm×120mm×20mm, the upper layer is SiC ceramic material with a thickness of 2mm, and the lower layer is an aluminum alloy material with a thickness of 18mm. On the surface where the aluminum alloy material is in contact with the SiC ceramic, 64 round holes with a radius of 2 mm and a depth of 0.5 mm are arranged at equal intervals on it, and the above materials constitute an integral structure. In order to verify the sound insulation and noise reduction function of the material 4, a material 5 with the same external dimensions was set up. The overall model of the material 5 is 120mm×120mm×20mm, the upper layer is a SiC ceramic material with a thickness of 2mm, and the lower layer is an aluminum alloy material with a thickness ...
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