Method for producing a sound-absorbing decorative stone

Abstract

The application provides a sound-absorbing decorative stone preparation method, and belongs to the technical field of sound-absorbing decorative stones. The sound-absorbing decorative stone comprises a stone layer and a sound-absorbing layer. The stone layer and the sound-absorbing layer are fixedly connected through a fixing assembly and are used for forming a building wall surface. The stone layer and the sound-absorbing layer are arranged in parallel, and the sizes of the cross sections in the parallel direction are the same. The stone layer is used for fixing the building wall surface and providing decoration for the wall surface of the building. The sound-absorbing layer is used for absorbing sound in the internal space of the building wall surface fixed by the stone layer to achieve a sound-absorbing effect. The thickness of the stone layer is 25 cm, the thickness of the sound-absorbing layer is 2 cm, and the distance between the stone layer and the sound-absorbing layer is 12 cm. The sound-absorbing decorative stone preparation method can solve the problem that the surface of the existing decorative stone is usually smooth, lacks a special sound-absorbing structure, and has a limited sound-absorbing effect.

Description

Technical Field

[0001] This invention belongs to the field of sound-absorbing decorative stone technology, and more specifically, relates to a method for preparing sound-absorbing decorative stone. Background Technology

[0002] Using large areas of decorative stone on the walls of expansive spaces such as airport terminals and high-speed rail stations can enhance the aesthetics and visual appeal of the space. The texture, color, and grain of the stone can infuse the space with a unique atmosphere, allowing people to experience comfort and beauty during waiting and transition times, thereby improving the overall environmental quality. The use of large areas of decorative stone conveys a high-quality, high-end image. For public transportation venues like airport terminals and high-speed rail stations, this sense of quality can improve passenger comfort and satisfaction, strengthening brand image and service experience. Choosing suitable decorative stone ensures the long-term beauty and durability of the walls. In high-traffic public places, decorative materials need to be wear-resistant, stain-resistant, and easy to clean to withstand long-term use and maintenance. Some specially designed stone decorations can improve the acoustic performance of a space. Through surface treatment or structural design, stone decorations can absorb or reflect sound waves, reducing noise and improving spatial comfort.

[0003] However, the surface of existing decorative stone is usually smooth and lacks special sound-absorbing structure, so the sound absorption effect is relatively limited. Summary of the Invention

[0004] In view of this, the present invention provides a method for preparing sound-absorbing decorative stone, which can solve the problem that the surface of existing decorative stone is usually smooth, lacks special sound-absorbing structure, and has a relatively limited sound absorption effect.

[0005] This invention is implemented as follows:

[0006] A first aspect of the present invention provides a sound-absorbing decorative stone material, comprising a stone layer and a sound-absorbing layer, wherein the stone layer and the sound-absorbing layer are fixedly connected by a fixing component to form a building wall surface; the stone layer and the sound-absorbing layer are arranged parallel to each other, and their cross-sectional dimensions in the parallel direction are the same; the stone layer is used to fix the building wall surface and provide decoration for the building wall surface; the sound-absorbing layer is used to absorb sound from the interior space of the building wall surface fixed by the stone layer to achieve a sound absorption effect; the thickness of the stone layer is 25cm, the thickness of the sound-absorbing layer is 2cm, and the distance between the stone layer and the sound-absorbing layer is 12cm; the width of the fixing component is the same as the sum of the thickness of the stone layer, the thickness of the sound-absorbing layer, and the distance between the stone layer and the sound-absorbing layer; the stone layer, the sound-absorbing layer, and the fixing component are fixedly connected by a groove.

[0007] The sound-absorbing layer is a transparent organic glass structure with sound-absorbing holes on its surface, and the stone layer is located near the interior space of the building.

[0008] The technical effects of the sound-absorbing decorative stone provided by this invention are as follows: Stone layer:

[0009] Structural and decorative functions: As a fixing and decorative material for building walls, stone cladding provides visual appeal and structural strength to the building.

[0010] Influence of shape and size: Its thickness is 25cm, and the thick structure can enhance the sound insulation of the wall while providing a sufficient decorative surface.

[0011] Connection relationship: The stone layer is fixedly connected through fixed components to form a stable wall structure, ensuring that the stone layer is stably fixed to the building wall.

[0012] Sound-absorbing layer:

[0013] Structure and sound absorption function: As a key part of sound-absorbing decoration, the main function of the sound-absorbing layer is to absorb sound inside the wall, thereby reducing the noise level inside the building and providing better comfort and acoustic environment.

[0014] Influence of shape and size: The sound-absorbing layer is 2cm thick, and its design dimensions and parallel setting match the stone layer, ensuring the flatness and aesthetics of the overall wall surface.

[0015] Connection relationship: It is connected to the fixing component through the groove to maintain a firm bond with the stone layer, while ensuring that its sound absorption function is not affected.

[0016] Based on the above technical solution, the sound-absorbing decorative stone of the present invention can be further improved as follows:

[0017] The gap between the stone layer and the sound-absorbing layer is filled with a porous inorganic material with a pore size greater than 50 nm. The sound-absorbing layer and the porous inorganic material form a resonant sound-absorbing structure.

[0018] The porous inorganic material has a transparent structure and is made by removing organic ligands from a metal-organic framework material. The porous inorganic material fully fills the voids inside the stone layer and the sound-absorbing layer, so as to enhance the sound absorption effect of the sound-absorbing layer without affecting the decorative surface of the stone layer.

[0019] The perforation rate of the sound-absorbing layer surface is less than 30%.

[0020] The beneficial effects of adopting the above-mentioned improved scheme are as follows: Porous inorganic materials:

[0021] Sound absorption function: The porous inorganic material filling the gap between the stone layer and the sound-absorbing layer has a resonant sound-absorbing structure, which can absorb sound more effectively and improve the sound absorption effect.

[0022] Shape and size selection: Porous inorganic materials with pore sizes greater than 50nm can better match the frequency range of sound waves and enhance the sound absorption effect.

[0023] Transparency: As a transparent structure, it does not affect the display of the decorative surface of the stone layer, while fully filling the gaps and enhancing the sound absorption effect of the sound-absorbing layer.

[0024] Surface characteristics of the sound-absorbing layer:

[0025] Perforation rate: The surface perforation rate is less than 30%, ensuring that it does not affect the decorative effect while providing sufficient sound absorption.

[0026] Furthermore, the pores on the surface of the sound-absorbing layer have a petal-like structure, which is used to change the fluid velocity field and the flow resistivity inside and outside the pores to improve the sound absorption performance of the sound-absorbing layer.

[0027] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: changing the fluid velocity field: the petal-like structure can change the flow of fluid (sound waves) inside and outside the hole, increase the contact area between the sound waves and the sound-absorbing layer, and improve the sound absorption effect.

[0028] Improve sound absorption performance: By changing the shape of the holes, sound waves are more easily absorbed, thus improving the sound absorption performance of the sound-absorbing layer.

[0029] Furthermore, the fixing assembly includes a horizontal bar and a vertical bar. The horizontal bar is a bidirectional bending member used to eliminate the effect of torque. The vertical bar is either an eccentric compression member or an eccentric tension member. The included angle between adjacent horizontal bars and vertical bars is greater than 30°.

[0030] The slenderness ratio of the horizontal bar is no greater than 150, and the slenderness ratio of the vertical bar is no greater than 350.

[0031] The beneficial effects of adopting the above improvement scheme are as follows: for horizontal and vertical members:

[0032] Structural Design: The design of horizontal and vertical bars ensures the stability and balance of the wall surface, effectively eliminates torque, and guarantees the overall structural stability of the wall surface.

[0033] Angle design: The angle between adjacent horizontal and vertical bars is greater than 30°, ensuring the stability and robustness of the fixing components.

[0034] Slenderness ratio: The slenderness ratio of the horizontal and vertical bars is controlled within a suitable range so that they can withstand the load of the wall while maintaining the lightweight and aesthetics of the structure.

[0035] A second aspect of the present invention provides a method for preparing sound-absorbing decorative stone, comprising the following specific steps:

[0036] S10: Select the stone, plexiglass, horizontal bars, and vertical bars to be prepared according to the design drawings, so that the length and width of the prepared materials are greater than the dimensions on the design drawings, and the thickness is the same as the specified thickness;

[0037] S20: Polish the surface of the stone so that its internal dimensions are the same as those in the design drawings, leave a 2-5cm edge position, design it as a flange shape, and form the stone layer;

[0038] S30: Preset the size of the acrylic glass in CAD, and plan the size and position of the holes on its surface so that the perforation rate of the acrylic glass with the same internal size as the stone meets the specified value;

[0039] S40: Using a CNC engraving machine, cut the surface of the acrylic glass according to the designed hole size and position, so that the cutting depth is less than half the thickness of the acrylic glass;

[0040] S50: Place the acrylic material on the perforation device, drill holes according to the cutting pattern, and cut acrylic materials that are 3mm larger than the specified length and width of the acrylic material according to the quality of the drilling. Grind the reserved edge and design it into a flange shape to form the sound-absorbing layer.

[0041] S60: Cut the horizontal bar and the vertical bar according to the size of the stone and the size of the plexiglass. Set a groove on the side of the horizontal bar and the vertical bar that contacts the stone and the plexiglass. The size of the groove is the same as the size of the edge of the stone and the plexiglass, thus forming the fixing component.

[0042] S70: Apply adhesive to the inner wall of the groove in 1 / 2 and the outer wall of the flange, and fix the stone layer and the sound-absorbing layer to the horizontal bar and the vertical bar in 1 / 2 in sequence according to the dimensions;

[0043] S80: After cleaning the interior of the stone layer and the sound-absorbing layer, fill them with the prepared porous inorganic material, apply adhesive to the remaining inner wall of the groove and the outer wall of the flange, and firmly fix the fixing component to the stone layer and the sound-absorbing layer.

[0044] S90: Fill the gaps between the fixing component and the stone layer and the sound-absorbing layer with sealant, and clean the surface after drying to complete the preparation of the sound-absorbing decorative stone.

[0045] The technical effects of the sound-absorbing decorative stone preparation method provided by this invention are as follows: S10: This step ensures that the dimensions of all materials used are larger than the required dimensions on the design drawings. This ensures sufficient allowance in subsequent processing to prevent errors. Simultaneously, the thickness is the same as the specified thickness to guarantee the structural stability and consistency of the final decorative stone.

[0046] S20: The purpose of polishing the stone surface is to match the dimensions on the design drawings, while leaving a 2-5cm margin at the edge and designing it as a flange shape. This is to ensure sufficient contact area and structural stability during subsequent installation.

[0047] S30: The dimensions of the acrylic glass and the size and position of the holes are preset in the CAD. This ensures that the dimensions of the acrylic glass match those of the stone, and that the arrangement of the holes meets the requirements of the acoustic design to achieve the best sound absorption effect.

[0048] S40: The acrylic glass is cut using a CNC engraving machine, ensuring that the size and position of the holes are accurate. At the same time, the cutting depth is less than half the thickness of the acrylic glass to ensure that its structural stability is not damaged.

[0049] S50: This step involves cutting the acrylic glass material to the required dimensions, polishing the edges, and designing it into a flange shape to form the sound-absorbing layer. This design contributes to the stability and aesthetics during final assembly.

[0050] S60: By cutting the horizontal and vertical bars and creating grooves on the side that contacts the stone and plexiglass, a secure connection between the fixing components and the stone and plexiglass is ensured.

[0051] S70: Adhesive is applied to the inner wall of the groove and the outer wall of the flange to fix the stone layer and sound-absorbing layer to the horizontal and vertical bars, ensuring the overall stability of the sound-absorbing decorative stone.

[0052] S80: Clean the interior of the stone layer and sound-absorbing layer, and fill them with treated porous inorganic material to improve sound absorption. Simultaneously, apply adhesive to ensure a secure connection between the fixing components and the stone layer and sound-absorbing layer.

[0053] S90: Fill the joints with sealant to ensure the overall structural sealing and stability of the sound-absorbing decorative stone. Finally, clean the surface to complete the installation.

[0054] Based on the above technical solution, the method for preparing sound-absorbing decorative stone of the present invention can be further improved as follows:

[0055] Furthermore, the specific steps of pre-setting the size of the acrylic glass in CAD, and planning the size and position of the holes on its surface, so that the perforation rate of the acrylic glass with the same internal dimensions as the stone meets the specified value, include:

[0056] First, open the CAD software and create a new drawing file;

[0057] The second step is to determine the size of the acrylic glass based on the design requirements and the dimensions of the stone, and then draw a rectangle using the drawing tools in CAD software.

[0058] The third step is to determine the size and location of the holes on the surface of the acrylic glass according to the specified values, taking into account factors such as the diameter, spacing, and distribution of the holes, and to design the number and curvature of the petals in the petal-like structure.

[0059] The fourth step is to adjust the position and density of the holes according to the required perforation rate.

[0060] Fifth, preview the design in the CAD software and make adjustments as needed;

[0061] The sixth step is to conduct experiments on plexiglass, analyze the sound absorption rate of each hole, and select the shape, size, and position of the holes with good sound absorption performance.

[0062] Furthermore, the cross-sectional dimension of the hole on the side closer to the building wall is larger than the cross-sectional dimension on the side closer to the stone layer, so that the cross-sectional area of ​​the hole inside the sound-absorbing layer gradually decreases from one side to the other along the central axis of the hole.

[0063] Furthermore, the specific steps of cleaning the interior of the stone layer and the sound-absorbing layer, filling them with treated porous inorganic material, applying adhesive to the remaining inner wall of the groove and the outer wall of the flange, and tightly fixing the fixing component to the stone layer and the sound-absorbing layer include:

[0064] The first step is to clean the interior of the stone layer and the sound-absorbing layer, and to place a layer of desiccant at the bottom of the gaps in the stone layer and the sound-absorbing layer.

[0065] The second step involves removing the organic ligands from the metal-organic framework material, drying it, and then filling it into the interior of the stone layer and the sound-absorbing layer.

[0066] The third step is to apply adhesive to the remaining inner wall of the groove and the outer wall of the flange, and place the fixing component coated with adhesive at the corresponding positions of the stone layer and the sound-absorbing layer to ensure that the flange and the groove fit perfectly.

[0067] Fourth, apply sufficient pressure to ensure a tight connection is established between the fixing component and the stone layer and the sound-absorbing layer;

[0068] Fifth, clean up any excess adhesive and wait enough time to ensure the adhesive is fully cured and hardened.

[0069] Furthermore, the specific steps for removing organic ligands from the metal-organic framework material and drying it include:

[0070] The first step involves placing the metal-organic framework material containing the organic ligand in one of the following solvents: ethanol, dimethylformamide, or silica, and stirring to ensure that the organic ligand and the solvent are in full contact.

[0071] The second step involves using ultrasonic equipment to process the organic ligands.

[0072] The third step involves using a filter to separate the metal-organic framework material from the solvent after the organic ligands have been removed.

[0073] The fourth step is to repeatedly wash the metal-organic framework material with pure solvent to ensure that residual organic ligands are completely removed.

[0074] The fifth step is to place the washed metal-organic framework material in a suitable drying device, and under mild conditions, remove the residual solvent and allow the material to dry completely.

[0075] Furthermore, the specific steps for filling the gaps between the fixing component and the stone layer and the sound-absorbing layer with sealant, drying it, and then cleaning its surface to complete the preparation of the sound-absorbing decorative stone include:

[0076] The first step is to fill the gaps between the fixing component and the stone layer and the sound-absorbing layer using one of silicone sealant or polyurethane sealant.

[0077] The second step is to allow the sealant to dry, the time depending on the type and thickness of the sealant used;

[0078] The third step is to clean the grouted surface with a damp cloth.

[0079] The fourth step is to inspect the surface after grouting, add more sealant, and use a grouting tool to correct the surface, ensuring that the grout is completely adhered to the surrounding surface without any gaps or bulges.

[0080] Fifth, clean the grouted surface again with clean water to ensure that all residual cleaning agent and dirt are removed.

[0081] Compared with existing technologies, the beneficial effects of the sound-absorbing decorative stone and its preparation method provided by this invention are:

[0082] Sound-absorbing layer with transparent acrylic glass structure: Using transparent acrylic glass to create the sound-absorbing layer maintains the building's aesthetics and does not affect the transparency of indoor light. In this way, decorative stone not only provides an attractive appearance but also serves a sound-absorbing function.

[0083] Sound-absorbing holes are installed on the surface of the transparent acrylic sound-absorbing layer to enhance sound absorption. These holes further improve sound absorption, reduce noise generated within the wall space, and increase indoor comfort.

[0084] Positioning the stone cladding close to the building's interior space: Placing the stone cladding close to the building's interior space allows for better absorption of noise generated within the building. This design minimizes noise transmission, improves sound absorption, and does not compromise the aesthetics of the building's walls. Attached Figure Description

[0085] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0086] Figure 1 This is a structural schematic diagram of a sound-absorbing decorative stone material;

[0087] Figure 2 This is a flowchart illustrating the preparation method of a sound-absorbing decorative stone.

[0088] The attached diagram lists the components represented by each number as follows:

[0089] 10. Stone layer; 20. Sound-absorbing layer; 30. Fixing components. Detailed Implementation

[0090] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0091] like Figure 1The illustration shows an embodiment of a sound-absorbing decorative stone material provided by the first aspect of the present invention. In this embodiment, it includes a stone layer 10 and a sound-absorbing layer 20. The stone layer 10 and the sound-absorbing layer 20 are fixedly connected by a fixing component to form a building wall. The stone layer 10 and the sound-absorbing layer 20 are arranged parallel to each other, and their cross-sectional dimensions in the parallel direction are the same. The stone layer 10 is used to fix the building wall and provide decoration to the wall surface. The sound-absorbing layer 20 is used to absorb sound from the interior space of the building wall fixed by the stone layer 10 to achieve a sound absorption effect. The thickness of the stone layer 10 is 25 cm, the thickness of the sound-absorbing layer 20 is 2 cm, and the distance between the stone layer 10 and the sound-absorbing layer 20 is 12 cm. The width of the fixing component 30 is the same as the sum of the thicknesses of the stone layer 10, the sound-absorbing layer 20, and the distance between the stone layer 10 and the sound-absorbing layer 20. The stone layer 10, the sound-absorbing layer 20, and the fixing component 30 are fixedly connected by a groove.

[0092] The sound-absorbing layer 20 is a transparent organic glass structure with sound-absorbing holes on its surface, and the stone layer 10 is located near the interior space of the building.

[0093] In the above technical solution, the gap between the stone layer 10 and the sound-absorbing layer 20 is filled with porous inorganic material with a pore size greater than 50nm, and the sound-absorbing layer 20 and the porous inorganic material form a resonant sound-absorbing structure.

[0094] The porous inorganic material has a transparent structure and is made by removing organic ligands from a metal-organic framework material. The porous inorganic material fully fills the gaps inside the stone layer 10 and the sound-absorbing layer 20, so as to enhance the sound absorption effect of the sound-absorbing layer 20 without affecting the decorative surface of the stone layer 10.

[0095] The perforation rate of the surface of the sound-absorbing layer 20 is less than 30%.

[0096] The sound absorption principle of the sound-absorbing layer 20 is as follows:

[0097] The sound-absorbing layer 20 and the gap between it and the stone layer 10 form a Helmholtz resonator, which can be considered as a resonant system composed of mass and a spring. When the frequency of the incident sound wave matches the resonant frequency of the system, the air at the neck of the perforated plate undergoes thermal vibration and friction, enhancing the absorption effect and forming an absorption peak, thus significantly attenuating the sound energy; far from the resonant frequency, the absorption effect is smaller. Placing porous material behind the perforated plate to increase the acoustic impedance will broaden the structure's absorption bandwidth.

[0098] The main factors affecting the sound absorption characteristics of perforated panel structures are:

[0099] (1) The thickness of the plate, the diameter of the holes, the spacing of the holes (or the perforation rate, porosity) and the depth of the air layer behind the plate mainly affect the range of sound absorption frequencies;

[0100] (2) The type and location of the sound-absorbing material placed in the cavity behind the plate mainly affect the sound absorption coefficient and the sound absorption bandwidth.

[0101] When the aperture and thickness of a perforated plate are constant, increasing the perforation ratio P increases the resonant frequency. This increase indicates a decrease in low-frequency sound absorption, causing the resonant frequency to shift towards higher frequencies. The magnitude of this shift is proportional to the square root of the perforation ratio, and the peak value of the sound absorption frequency response curve will shift to the right, i.e., to higher frequencies. When the perforation ratio reaches 30%, further increases in the perforation ratio do not significantly increase the sound absorption coefficient.

[0102] Furthermore, in the above technical solution, the pores on the surface of the sound-absorbing layer 20 are petal-shaped structures, which are used to change the fluid velocity field and the flow resistivity inside and outside the pores to improve the sound absorption performance of the sound-absorbing layer 20.

[0103] Finite element simulations verified that the petal-shaped pores in the sound-absorbing layer 20 have better sound absorption performance than the circular pores.

[0104] Furthermore, in the above technical solution, the fixing component 30 includes a horizontal bar and a vertical bar. The horizontal bar is a bidirectional bending member used to eliminate the effect of torque, and the vertical bar is one of an eccentric compression member or an eccentric tension member; the included angle between adjacent horizontal bars and vertical bars is greater than 30°.

[0105] The slenderness ratio of the horizontal bars shall not exceed 150, and the slenderness ratio of the vertical bars shall not exceed 350.

[0106] like Figure 2 The image shows an embodiment of a method for preparing sound-absorbing decorative stone according to a second aspect of the present invention. This embodiment includes the following specific steps:

[0107] S10: Select the stone, plexiglass, horizontal bars, and vertical bars to be prepared according to the design drawings, so that the length and width of the prepared materials are greater than the dimensions on the design drawings, and the thickness is the same as the specified thickness;

[0108] S20: Polish the surface of the stone so that its internal dimensions are the same as those in the design drawings, leave a 2-5cm edge position, design it as a flange shape, and form stone layer 10;

[0109] S30: Preset the size of the acrylic glass in CAD, and plan the size and position of the holes on its surface so that the perforation rate of the acrylic glass with the same internal size as the stone meets the specified value;

[0110] S40: The surface of the acrylic glass is cut by a CNC engraving machine according to the size and position of the designed hole, so that the cutting depth is less than half the thickness of the acrylic glass;

[0111] S50: Place the acrylic material on the perforation device, drill holes according to the cutting pattern, and cut acrylic materials that are 3mm larger than the specified length and width of the acrylic according to the quality of the drilling. Grind the reserved edge and design it into a flange shape to form the sound-absorbing layer 20.

[0112] S60: Cut horizontal and vertical bars according to the size of the stone and the size of the plexiglass. Set grooves on the side of the horizontal and vertical bars that contact the stone and plexiglass. The size of the grooves is the same as the size of the edge of the stone and plexiglass, forming the fixing component 30.

[0113] S70: Apply adhesive to the inner wall of the 1 / 2 groove and the outer wall of the flange, and fix the stone layer 10 and the sound-absorbing layer 20 to the 1 / 2 horizontal bar and the vertical bar in sequence according to the dimensions.

[0114] S80: After cleaning the interior of the stone layer 10 and the sound-absorbing layer 20, fill them with the prepared porous inorganic material, apply adhesive to the remaining inner wall of the groove and the outer wall of the flange, and firmly fix the fixing component 30 to the stone layer 10 and the sound-absorbing layer 20.

[0115] S90: Fill the gaps where the fixing component 30 connects to the stone layer 10 and the sound-absorbing layer 20 with sealant, and clean the surface after drying to complete the preparation of the sound-absorbing decorative stone.

[0116] Furthermore, in the above technical solution, the specific steps of pre-setting the size of the acrylic glass in CAD, and planning the size and position of the holes on its surface, so that the perforation rate of the acrylic glass with the same internal dimensions as the stone meets the specified value, include:

[0117] First, open the CAD software and create a new drawing file;

[0118] The second step is to determine the size of the acrylic glass based on the design requirements and the dimensions of the stone, and then draw a rectangle using the drawing tools in CAD software.

[0119] The third step is to determine the size and location of the holes on the surface of the acrylic glass according to the specified values, taking into account factors such as the diameter, spacing, and distribution of the holes, and designing the number and curvature of the petals in the petal-like structure.

[0120] The fourth step is to adjust the position and density of the holes according to the required perforation rate.

[0121] Fifth, preview the design in the CAD software and make adjustments as needed;

[0122] The sixth step is to conduct experiments on plexiglass, analyze the sound absorption rate of each hole, and select the shape, size, and position of the holes with good sound absorption performance.

[0123] Furthermore, in the above technical solution, the cross-sectional dimension of the hole on the side closer to the building wall is larger than the cross-sectional dimension on the side closer to the stone layer 10, so that the cross-sectional area of ​​the hole inside the sound-absorbing layer 20 gradually decreases from one side to the other along the central axis of the hole.

[0124] Furthermore, in the above technical solution, after cleaning the interior of the stone layer 10 and the sound-absorbing layer 20, filling them with treated porous inorganic material, applying adhesive to the remaining inner wall of the groove and the outer wall of the flange, and tightly fixing the fixing component 30 to the stone layer 10 and the sound-absorbing layer 20, the specific steps include:

[0125] The first step is to clean the interior of the stone layer 10 and the sound-absorbing layer 20, and to place a layer of desiccant at the bottom of the gaps in the stone layer 10 and the sound-absorbing layer 20.

[0126] The second step is to remove the organic ligands from the metal-organic framework material and dry it before filling it into the interior of the stone layer 10 and the sound-absorbing layer 20.

[0127] The third step is to apply adhesive to the remaining inner wall of the groove and the outer wall of the flange, and place the fixing component 30 with adhesive on the corresponding position of the stone layer 10 and the sound-absorbing layer 20 to ensure that the flange and the groove fit perfectly.

[0128] Fourth, apply sufficient pressure to ensure a tight connection between the fixing component 30 and the stone layer 10 and the sound-absorbing layer 20;

[0129] Fifth, clean up any excess adhesive and wait enough time to ensure the adhesive is fully cured and hardened.

[0130] Furthermore, in the above technical solution, the specific steps for removing organic ligands from the metal-organic framework material and drying it include:

[0131] The first step involves placing the metal-organic framework material containing the organic ligand in one of the following solvents: ethanol, dimethylformamide, or silica, and stirring to ensure that the organic ligand and the solvent are in full contact.

[0132] The second step involves using ultrasonic equipment to process the organic ligands.

[0133] The third step involves using a filter to separate the metal-organic framework material from the solvent after the organic ligands have been removed.

[0134] The fourth step is to repeatedly wash the metal-organic framework material with pure solvent to ensure that residual organic ligands are completely removed.

[0135] The fifth step is to place the washed metal-organic framework material in a suitable drying device, and under mild conditions, remove the residual solvent and allow the material to dry completely.

[0136] Furthermore, in the above technical solution, the specific steps for preparing the sound-absorbing decorative stone include filling the gaps between the fixing component 30 and the stone layer 10 and the sound-absorbing layer 20 with sealant, drying it, and then cleaning its surface:

[0137] The first step is to fill the gap between the fixing component 30 and the stone layer 10 and the sound-absorbing layer 20 using one of the following: silicone sealant or polyurethane sealant.

[0138] The second step is to allow the sealant to dry, the time depending on the type and thickness of the sealant used;

[0139] The third step is to clean the grouted surface with a damp cloth.

[0140] The fourth step is to inspect the surface after grouting, add more sealant, and use a grouting tool to correct the surface, ensuring that the grout is completely adhered to the surrounding surface without any gaps or bulges.

[0141] Fifth, clean the grouted surface again with clean water to ensure that all residual cleaning agent and dirt are removed.

[0142] Specifically, the principle of this invention is as follows: In use, the prepared stone, acrylic glass, horizontal and vertical bars are selected according to the design drawings, ensuring that the length and width of the prepared materials are greater than the dimensions on the design drawings, and the thickness is the same as the specified thickness. The surface of the stone is polished so that its internal dimensions are the same as the dimensions on the design drawings, leaving a 2-5cm edge position designed as a flange shape, forming the stone layer 10. The size of the acrylic glass is preset in CAD, and the size and position of the holes on its surface are planned so that the perforation rate of the acrylic glass with the same internal dimensions as the stone meets the specified value. A CNC engraving machine is used to cut the surface of the acrylic glass according to the designed hole size and position, so that the cutting depth is less than half the thickness of the acrylic glass. The acrylic glass material is placed on a drilling device, and holes are drilled according to the cutting pattern. Based on the drilling quality, acrylic glass that is 3mm larger than the specified length and width is cut, and the reserved edge position is polished to design a flange. The shape of the sound-absorbing layer 20 is formed; the horizontal and vertical bars are cut according to the size of the stone and the plexiglass; grooves are set on the side of the horizontal and vertical bars that contact the stone and plexiglass, and the size of the grooves is the same as the size of the edge of the stone and plexiglass, forming the fixing component 30; adhesive is applied to the inner wall of half of the groove and the outer wall of the flange, and the stone layer 10 and the sound-absorbing layer 20 are fixedly connected to the horizontal and vertical bars in sequence according to the size; after cleaning the inside of the stone layer 10 and the sound-absorbing layer 20, the treated porous inorganic material is filled; adhesive is applied to the remaining inner wall of the groove and the outer wall of the flange, and the fixing component 30 is tightly fixed to the stone layer 10 and the sound-absorbing layer 20; sealant is filled into the gaps where the fixing component 30 connects to the stone layer 10 and the sound-absorbing layer 20, and after drying, the surface is cleaned to complete the preparation of the sound-absorbing decorative stone.

Claims

1. A method for preparing sound-absorbing decorative stone, characterized in that, The sound-absorbing decorative stone includes a stone layer (10) and a sound-absorbing layer (20). The stone layer (10) and the sound-absorbing layer (20) are fixedly connected by a fixing component to form a building wall. The stone layer (10) and the sound-absorbing layer (20) are arranged parallel to each other, and their cross-sectional dimensions in the parallel direction are the same. The stone layer (10) is used to fix the building wall and provide decoration for the building wall. The sound-absorbing layer (20) is used to absorb the sound in the interior space of the building wall fixed by the stone layer (10) to achieve a sound absorption effect. The thickness of the stone layer (10) is 25cm, and the sound-absorbing layer (20) is... The thickness of the stone layer (10) is 2cm, and the distance between the stone layer (10) and the sound-absorbing layer (20) is 12cm; the width of the fixing component (30) is the same as the sum of the thickness of the stone layer (10), the sound-absorbing layer (20), and the distance between the stone layer (10) and the sound-absorbing layer (20); the stone layer (10), the sound-absorbing layer (20), and the fixing component (30) are fixedly connected by a groove; the sound-absorbing layer (20) is a transparent organic glass structure with sound-absorbing holes on its surface, and the stone layer (10) is located near the interior space of the building; The preparation of the sound-absorbing decorative stone includes the following specific steps: S10: Select the stone, plexiglass, horizontal bars, and vertical bars to be prepared according to the design drawings, so that the length and width of the prepared materials are greater than the dimensions on the design drawings, and the thickness is the same as the specified thickness; S20: Create a new drawing file in CAD software, and determine the size of the acrylic glass according to the design requirements and the dimensions of the stone. Draw a rectangle using the drawing tools in the CAD software. Determine the size and location of the holes on the acrylic glass surface according to the specified values, considering factors such as the diameter, spacing, and distribution of the holes, and design the number and curvature of the petals in the petal-like structure. Adjust the position and density of the holes according to the perforation rate requirements. Preview the design effect in the CAD software and make adjustments as needed. Conduct experiments on the acrylic glass, analyze the sound absorption rate of each hole, and select the shape, size, and location of the holes with good sound absorption performance. S30: Polish the surface of the stone so that its internal dimensions are the same as those in the design drawings, leave a 2-5cm edge position, design it as a flange shape, and form the stone layer (10); S40: Using a CNC engraving machine, cut the surface of the acrylic glass according to the designed hole size and position, so that the cutting depth is less than half the thickness of the acrylic glass; S50: Place the acrylic material on the perforation device, drill holes according to the cutting pattern, and cut acrylic materials that are 3mm larger than the specified length and width of the acrylic according to the quality of the drilling. Grind the reserved edge and design it as a flange shape to form the sound-absorbing layer (20). S60: Cut the horizontal bar and the vertical bar according to the size of the stone and the size of the plexiglass, and set the groove on the side of the horizontal bar and the vertical bar that contacts the stone and the plexiglass. The size of the groove is the same as the size of the edge of the stone and the plexiglass, thus forming the fixing component (30). S70: Apply adhesive to the inner wall of the groove and the outer wall of the flange in 1 / 2, and fix the stone layer (10) and the sound-absorbing layer (20) to the horizontal bar and the vertical bar in 1 / 2 in sequence according to the dimensions; S80: After cleaning the interior of the stone layer (10) and the sound-absorbing layer (20), fill it with the prepared porous inorganic material, apply adhesive to the remaining inner wall of the groove and the outer wall of the flange, and tightly fix the fixing component (30) to the stone layer (10) and the sound-absorbing layer (20). S90: Fill the gaps between the fixing component (30) and the stone layer (10) and the sound-absorbing layer (20) with sealant, and clean the surface after drying to complete the preparation of the sound-absorbing decorative stone.

2. The method for preparing sound-absorbing decorative stone according to claim 1, characterized in that, The gap between the stone layer (10) and the sound-absorbing layer (20) is filled with a porous inorganic material with a pore size greater than 50 nm. The sound-absorbing layer (20) and the porous inorganic material form a resonant sound-absorbing structure. The porous inorganic material has a transparent structure and is made by removing organic ligands from a metal-organic framework material. The porous inorganic material fully fills the gaps inside the stone layer (10) and the sound-absorbing layer (20) to enhance the sound absorption effect of the sound-absorbing layer (20) without affecting the display of the decorative surface of the stone layer (10). The perforation rate of the surface of the sound-absorbing layer (20) is less than 30%.

3. The method for preparing sound-absorbing decorative stone according to claim 2, characterized in that, The pores on the surface of the sound-absorbing layer (20) are petal-like structures, which are used to change the fluid velocity field and the flow resistivity inside and outside the pores to improve the sound absorption performance of the sound-absorbing layer (20).

4. The method for preparing sound-absorbing decorative stone according to claim 3, characterized in that, The fixing component (30) includes a horizontal bar and a vertical bar. The horizontal bar is a bidirectional bending member used to eliminate the effect of torque. The vertical bar is either an eccentric compression member or an eccentric tension member. The included angle between adjacent horizontal bars and vertical bars is greater than 30°. The slenderness ratio of the horizontal bar is not greater than 150, and the slenderness ratio of the vertical bar is not greater than 350.

5. The method for preparing sound-absorbing decorative stone according to claim 4, characterized in that, The cross-sectional dimension of the hole on the side closer to the building wall is larger than that on the side closer to the stone layer (10), so that the cross-sectional area of ​​the hole inside the sound-absorbing layer (20) gradually decreases from one side to the other along the central axis of the hole.

6. The method for preparing sound-absorbing decorative stone according to claim 1, characterized in that, The specific steps of S80 include: The first step is to clean the interior of the stone layer (10) and the sound-absorbing layer (20) and place a layer of desiccant at the bottom of the gaps in the stone layer (10) and the sound-absorbing layer (20); The second step is to remove the organic ligands from the metal-organic framework material, dry it, and then fill it into the interior of the stone layer (10) and the sound-absorbing layer (20). The third step is to apply adhesive to the remaining inner wall of the groove and the outer wall of the flange, and place the fixing component (30) coated with adhesive at the corresponding positions of the stone layer (10) and the sound-absorbing layer (20) to ensure that the flange and the groove are completely matched. Fourth step, apply sufficient pressure to ensure a tight connection between the fixing component (30) and the stone layer (10) and the sound-absorbing layer (20); Fifth, clean up any excess adhesive and wait enough time to ensure the adhesive is fully cured and hardened.

7. The method for preparing sound-absorbing decorative stone according to claim 6, characterized in that, The specific steps of the second step of S80 include: Step 1: Place the metal-organic framework material containing the organic ligand in one of the solvents, namely ethanol, dimethylformamide, and silica, and stir to ensure that the organic ligand and the solvent are in full contact. Step 2 involves using ultrasonic equipment to process the organic ligands. Step 3: After the organic ligands are removed, the metal-organic framework material is separated from the solvent using a filter; Step 4: Repeatedly wash the metal-organic framework material with pure solvent to ensure complete removal of residual organic ligands; Step 5: Place the washed metal-organic framework material in a suitable drying device, and under gentle conditions, remove the residual solvent and allow the material to dry completely.

8. The method for preparing sound-absorbing decorative stone according to claim 7, characterized in that, The specific steps of S90 include: The first step is to fill the gap between the fixing component (30) and the stone layer (10) and the sound-absorbing layer (20) using one of silicone sealant or polyurethane sealant; The second step is to allow the sealant to dry, the time depending on the type and thickness of the sealant used; The third step is to clean the grouted surface with a damp cloth. The fourth step is to inspect the surface after grouting, add more sealant, and use a grouting tool to correct the surface, ensuring that the grout is completely adhered to the surrounding surface without any gaps or bulges. Fifth, clean the grouted surface again with clean water to ensure that all residual cleaning agent and dirt are removed.

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