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Composite inner wall with sound absorption and image display functions and application thereof

A porous sound-absorbing and optical filter technology, which is applied in the field of composite inner walls, can solve problems such as unsatisfactory effects, and achieve the effects of alleviating driver fatigue, excellent weather resistance, and reducing noise

Active Publication Date: 2020-05-08
CRRC QINGDAO SIFANG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above scheme can improve the noise in the tunnel to a certain extent, the effect is still not very satisfactory

Method used

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  • Composite inner wall with sound absorption and image display functions and application thereof
  • Composite inner wall with sound absorption and image display functions and application thereof
  • Composite inner wall with sound absorption and image display functions and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0045] Scheme 1: A preparation method of a color-changing flash interior wall decorative coating, comprising:

[0046] S1. Prepare the formula for the color-changing flash interior wall decorative paint: 40 parts of styrene-acrylic emulsion, 3 parts of film-forming aid, 0.2 part of defoamer, 0.6 part of thickener, 6 parts of nano-titanium dioxide, and 4 parts of photochromic fluorescent pigment 1.2 parts of pearl powder, 1.2 parts of glitter powder, 1.5 parts of dispersant, 1.5 parts of leveling agent, 1.5 parts of wetting agent, 6 parts of nano tourmaline powder, 10 parts of water;

[0047] Wherein, the photochromic fluorescent pigment is obtained by calcining a mixture of neodymium oxide, boric acid and lithium carbonate, and its particle size is 50-100nm; wherein the mass-number ratio of neodymium oxide, boric acid and lithium carbonate is 40:25:35 ;

[0048] Wherein, the glitter powder is gold flakes, silver flakes, plastics of various colors and laser flashing colorful f...

Embodiment 1

[0073] This embodiment provides a composite inner wall with sound-absorbing imaging for tunnels, such as figure 1 As shown, including the structures from the inside to the outside:

[0074] The first layer: the inner wall of the tunnel foundation;

[0075] The second layer: keel;

[0076] The third layer: porous sound-absorbing board;

[0077] The fourth layer: photochromic coating;

[0078] The fifth layer: coated filter (filter).

[0079] In the above composite inner wall structure:

[0080] (1) The characteristics of the porous sound-absorbing panel are as follows:

[0081] The material of the porous sound-absorbing board is aluminum fiber.

[0082] The porous sound-absorbing panel has a plurality of interconnected micropores, the diameter of the micropores is 0.1-0.5mm, and the density of the micropores is 6.36×10 4 -1.59×10 6 piece / m 2 ; The thickness of the porous sound-absorbing board is 1.2mm; Select in the present embodiment figure 2 The structure shown in ...

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Abstract

The invention belongs to the technical field of building structures, and particularly relates to a composite inner wall with sound absorption and image display functions and application thereof. The composite inner wall with the sound absorption and image display functions comprises a first layer, a second layer, a third layer, a fourth layer and a fifth layer from inside to outside, wherein the first layer is a foundation inner wall, the second layer is a keel, the third layer is a porous sound absorption plate, the fourth layer is a photochromic coating, and the fifth layer is a coated optical filter. According to the composite inner wall with the sound absorption and image display functions and the application thereof, the porous sound absorption material is applied to the inner wall ofa subway train tunnel for sound absorption and noise reduction for the first time, and the problems that when a subway train runs in a following way, the noise coupling reverberation duration of a tunnel train is long, and the sound pressure level is high are solved; and meanwhile, the photochromic technology is combined, the photochromic coating is formed on the surface of the porous sound absorption plate, and therefore a dynamic pattern can be formed on the inner wall of the tunnel, visual fatigue of a driver is eliminated, the attraction of commercial advertisements is improved, and thedual functions of noise reduction and image display are achieved. The coated optical filter matched with the composite inner wall is further additionally arranged, and the noise reduction and image display functions are further improved through the synergistic effect.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to a composite inner wall with sound-absorbing imaging and its application. Background technique [0002] At present, in the process of subway trains passing through tunnels, there are problems such as long duration of tunnel-train noise coupling reverberation, high sound pressure level and driver visual fatigue. [0003] For this kind of noise problem, the current solution is to install a sound insulation and noise reduction device inside the car body, but the noise reduction effect is not very obvious, and there are disadvantages such as high cost, affecting the structure and space of the car body; in addition, for visual fatigue problems , there is currently no workaround. [0004] CN107178380A discloses a modular sound-absorbing system for the inner wall of a tunnel, including a keel and a sound-absorbing panel made of composite materials; the sound-abso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38G02B5/20
CPCE21D11/38G02B5/20
Inventor 张志龙高宝杰徐刚王中钢郭建强
Owner CRRC QINGDAO SIFANG CO LTD
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