CN107090921A - A kind of compound sound-absorption structural and preparation method thereof - Google Patents

Abstract

The invention provides a composite sound-absorbing structure and a manufacturing method thereof, wherein the composite sound-absorbing structure includes a honeycomb core layer, a mesh lining layer and a composite material layer; the mesh lining layer is arranged on the outer surface of the honeycomb core layer , the composite material layer is spray-coated on the outer surface of the mesh lining layer, the composite material layer is provided with sound-absorbing holes, and the sound-absorbing holes are through holes opened on the composite material layer. The composite sound-absorbing structure provided by the invention not only has simple structure, light weight, safe and environment-friendly materials, low cost, but also has multiple functions such as sound absorption and sound insulation, and can be widely used in architectural design.

Description

Composite sound-absorbing structure and manufacturing method thereof

technical field

The invention relates to the technical field of sound-absorbing materials, in particular to a composite sound-absorbing structure and a manufacturing method thereof.

Background technique

Sound absorption is one of the main measures of noise control. Existing building decoration panels generally do not have the function of sound absorption. For interior decoration places that require sound absorption, mineral wool or single-layer metal and non-metal perforated panels are usually used to make sound-absorbing panels for indoor decoration. A better sound-absorbing effect is achieved, but the sound-absorbing panels made of the above materials will cause the sound-absorbing cotton or materials to dissociate from the panels after a long period of use, polluting the indoor environment. In addition, there are metal perforated sound-absorbing panels, such as perforated steel plates, perforated aluminum plates, etc., and the cost is relatively high.

There are many honeycomb structure products at present, including plastic honeycomb, metal material honeycomb, aramid paper honeycomb, etc. They are mainly used as decorative panels, furniture panels or wall panels, which solve the problems of sound insulation and heat insulation, but the sound absorption effect is not ideal. , and the structure is complex and the cost is high.

Contents of the invention

In view of the above technical problems, the present invention proposes a composite sound-absorbing structure and its manufacturing method, which is not only simple in structure, light in weight, safe and environmentally friendly, and low in cost, but also has multiple functions such as sound absorption and sound insulation, and can be widely used in construction designing.

According to one aspect of the present invention, a composite sound-absorbing structure is provided, and the composite sound-absorbing structure includes a honeycomb core layer, a mesh lining layer and a composite material layer;

The mesh lining layer is arranged on the outer surface of the honeycomb core layer, the composite material layer is sprayed on the outer surface of the mesh lining layer, and the composite material layer is provided with sound-absorbing holes, and the sound-absorbing holes are placed on the outer surface of the mesh lining layer. The through hole opened on the composite material layer.

Optionally, the composite sound-absorbing structure also includes a decorative layer;

The decoration layer is arranged on the outer surface of the composite material layer.

Optionally, the honeycomb core layer is a paper honeycomb core layer or an aluminum honeycomb core layer.

Optionally, the honeycomb core layer includes multiple layers of honeycomb cores, and a spacer layer is provided between the honeycomb cores of adjacent layers.

Optionally, the spacer layer is sound-absorbing paper, sound-absorbing cloth or non-woven fabric.

Optionally, the mesh liner is a fiber material mesh liner, a metal material mesh liner, sound-absorbing paper, sound-absorbing cloth or non-woven fabric.

Optionally, the shape of each honeycomb hole in the honeycomb core layer is circular and/or polygonal.

According to another aspect of the present invention, a method for manufacturing a composite sound-absorbing structure is provided, the method comprising:

Wrap the mesh liner on the outer surface of the honeycomb core layer;

After the composite material is melted, it is sprayed on the outer surface of the mesh lining layer by a spray forming process to form a composite material layer;

After the composite material layer is cooled, a through hole is opened on the composite material layer by a drilling process to form a sound-absorbing hole.

Optionally, the method also includes:

A decorative layer is arranged on the outer surface of the composite material layer.

The beneficial effects of the present invention are:

The composite sound-absorbing structure and its manufacturing method provided by the present invention, wherein the composite sound-absorbing structure comprises a honeycomb core layer, a mesh lining layer and a composite material layer, the mesh lining layer is arranged on the outer surface of the honeycomb core layer, and the composite material layer is sprayed on the mesh The outer surface of the lining layer is provided with sound-absorbing holes on the composite material layer, and the sound-absorbing holes are through holes opened on the composite material layer. The composite sound-absorbing structure provided by the technical solution of the present invention is not only simple in structure, light in weight, and safe in use. Environmental protection, low cost, and multiple functions such as sound absorption and sound insulation, can be widely used in architectural design.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the specific embodiments of the present invention are enumerated below.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same components. In the attached picture:

Fig. 1 is a structural schematic diagram of a composite sound-absorbing structure proposed by an embodiment of the present invention;

Fig. 2 is a flow chart of a manufacturing method of a composite sound-absorbing structure proposed by an embodiment of the present invention.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and/or groups thereof.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be used in an idealized or overly formal sense unless specifically defined to explain.

Fig. 1 shows a schematic structural diagram of a composite sound-absorbing structure according to an embodiment of the present invention.

Referring to Fig. 1, the composite sound-absorbing structure proposed by the embodiment of the present invention includes a honeycomb core layer 10, a mesh lining layer 20 and a composite material layer 30;

The mesh lining layer 20 is arranged on the outer surface of the honeycomb core layer 10, the composite material layer 30 is sprayed on the outer surface of the mesh lining layer 20, and the composite material layer 30 is provided with sound-absorbing holes 301, so The sound-absorbing hole 301 is a through hole opened on the composite material layer 30 .

It should be noted that, in this embodiment, the mesh liner 20 is added to the outer surface of the honeycomb core layer 10 when the honeycomb opening is large, so that the composite material can be evenly sprayed around the honeycomb core, and the honeycomb core is wrapped in the mesh. The interior of the lining structure will not fall into the honeycomb core, and adding the mesh lining layer 20 can also increase the strength of the composite material. Then, the composite material is melted and sprayed on the outer surface of the mesh lining layer 20 to form the composite material layer 30 . The mesh liner layer 20 is wrapped inside the composite material layer 30 to form a whole with the honeycomb core layer 10 and the mesh liner layer 20 . Further, considering the sound absorption effect of the structure, after the composite material is cooled, micropores, that is, through holes 301, are made on the surface, so that the micropores and the honeycomb core layer together form a Helmholtz resonance sound absorption system, which improves the structure. sound absorption performance.

Understandably, when the honeycomb holes in the honeycomb core layer are small, the mesh lining layer can be omitted.

The composite sound-absorbing structure provided by the embodiment of the present invention specifically includes a honeycomb core layer, a mesh lining layer, and a composite material layer. The mesh lining layer is arranged on the outer surface of the honeycomb core layer, and the composite material layer is sprayed on the outer surface of the mesh lining layer. The material layer is provided with sound-absorbing holes, and the sound-absorbing holes are through holes opened on the composite material layer. The composite sound-absorbing structure provided by the technical solution of the present invention is not only simple in structure, light in weight, safe and environmentally friendly in materials, low in cost, but also has It has multiple functions such as sound absorption and sound insulation, and can be widely used in architectural design.

Further, the composite sound-absorbing structure further includes a decorative layer, and the decorative layer is arranged on the outer surface of the composite material layer 30 .

In the composite sound-absorbing structure provided by the embodiment of the present invention, the overall structure is beautiful by arranging a decorative layer on the outer surface of the composite material layer. The patented invention has simple structure, light weight, safe and environment-friendly materials, low cost, and multiple functions of sound absorption, sound insulation and decoration. It can be applied to places with sound absorption and decoration in architectural design, such as theaters, concert halls, auditoriums, conference halls, airport (car) halls, gymnasiums, hotels, restaurants, KTV and other wall and ceiling decorations and vehicle and ship interiors.

Further, the honeycomb core layer 10 is a paper honeycomb core layer or an aluminum honeycomb core layer. In the embodiment of the present invention, the material of the honeycomb core may be paper or aluminum, which is not specifically limited in the present invention.

Further, the honeycomb core layer 10 includes multiple layers of honeycomb cores, and a spacer layer is provided between adjacent layers of honeycomb cores. Wherein, the spacer layer is sound-absorbing paper, sound-absorbing cloth or non-woven fabric.

It can be understood that the honeycomb core layer can be a single layer or multiple layers. In the embodiment of the present invention, the honeycomb core layer includes multiple layers of honeycomb cores, and each layer may be separated by materials such as sound-absorbing paper, sound-absorbing cloth, or non-woven fabric, which is not specifically limited in the present invention.

Further, the shape of each honeycomb hole in the honeycomb core layer 10 is circular and/or polygonal.

It can be understood that the cross-section of the honeycomb holes may be hexagonal, circular, square or other polygonal shapes, which is not specifically limited in the present invention. In the embodiment of the present invention, the cross section of the honeycomb hole is hexagonal. It can be understood that the cross-sectional shapes of the honeycomb holes can be the same or different.

Furthermore, the size of each honeycomb hole in the honeycomb core layer may be equal or different.

Further, the mesh liner is a fiber material mesh liner, a metal material mesh liner, sound-absorbing paper, sound-absorbing cloth or non-woven fabric. In the embodiment of the present invention, the material of the mesh lining layer may be fiber material, or metal material, or non-woven fabric, sound-absorbing cloth, sound-absorbing paper, etc. Among them, when the honeycomb hole is small, the mesh lining layer can be omitted.

Fig. 2 shows a flowchart of a manufacturing method of a composite sound-absorbing structure proposed by an embodiment of the present invention.

Referring to Figure 2, the manufacturing method of the composite sound-absorbing structure proposed by the embodiment of the present invention specifically includes the following steps:

S21. Wrap the mesh liner on the outer surface of the honeycomb core layer.

In the specific production process, the mesh lining layer is formed by wrapping the mesh lining material around the honeycomb core. The mesh lining layer mainly plays the role of strengthening the adsorption of the composite material and increasing the strength of the structure.

S22. After melting the composite material, spray it on the outer surface of the mesh liner layer through a spray molding process to form a composite material layer.

Specifically, the composite material is deposited on the outer surface of the mesh lining layer of the honeycomb core material through a spray forming process.

S23. After the composite material layer is cooled, open a through hole on the composite material layer through a drilling process to form a sound-absorbing hole.

Specifically, the through-holes are micro-holes made by drilling or other processing techniques after the composite material is cooled.

Further, the method also includes step S24 not shown in the drawings:

Step S24, setting a decorative layer on the outer surface of the composite material layer.

In the embodiment of the present invention, the outer decorative layer is wrapped around the composite material layer by pasting or other methods, so as to realize the decorative function.

In a specific embodiment, the composite sound-absorbing structure is composed of a honeycomb core layer, a mesh lining layer, a microporous composite material layer and an external decorative layer. The material of the honeycomb core can be paper or aluminum, the cross-section of the honeycomb mouth can be hexagonal, circular, square or other polygonal shapes, the size of the honeycomb can be equal or different, and the honeycomb core can be a single layer , It can also be multi-layer, and each layer can be separated by materials such as sound-absorbing paper or non-woven fabric. The material of the net liner can be fiber material, metal material, or non-woven fabric, sound-absorbing cloth, sound-absorbing paper, etc. When the honeycomb hole is small, the mesh liner can be omitted, and the mesh liner material is wrapped around the honeycomb core, which mainly strengthens the adsorption of the composite material and increases the strength of the structure. In the manufacturing process of the composite sound-absorbing structure, the composite material layer is deposited on the surface of the honeycomb core material through a spray molding process. Microholes are made by drilling or other processing techniques after the composite material is cooled. The outer decorative layer is a kind of wrapping around the microporous composite material by pasting or other means.

In the composite sound-absorbing structure and its manufacturing method provided by the embodiments of the present invention, the honeycomb structure is light in weight, and the composite material is wrapped around it to make it have a certain sound insulation effect, and then micropores are made on the surface of the composite material, so that Micropores and honeycomb units form a Helmholtz resonance system to increase the sound absorption effect of the structure. Adding a decorative layer makes the overall structure beautiful. The patented invention has simple structure, light weight, safe and environment-friendly materials, low cost, and multiple functions of sound absorption, sound insulation and decoration. It can be applied to places with sound absorption and decoration in architectural design, such as theaters, concert halls, auditoriums, conference halls, airport (car) halls, gymnasiums, hotels, restaurants, KTV and other wall and ceiling decorations and vehicle and ship interiors.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (9)

1. A composite sound-absorbing structure, characterized in that, the composite sound-absorbing structure comprises a honeycomb core layer, a mesh lining layer and a composite material layer; The mesh lining layer is arranged on the outer surface of the honeycomb core layer, the composite material layer is sprayed on the outer surface of the mesh lining layer, and the composite material layer is provided with sound-absorbing holes, and the sound-absorbing holes are placed on the outer surface of the mesh lining layer. The through hole opened on the composite material layer. 2. The composite sound-absorbing structure according to claim 1, characterized in that, the composite sound-absorbing structure further comprises a decorative layer; The decoration layer is arranged on the outer surface of the composite material layer. 3. The composite sound-absorbing structure according to claim 1, wherein the honeycomb core layer is a paper honeycomb core layer or an aluminum honeycomb core layer. 4. The composite sound-absorbing structure according to claim 1, wherein the honeycomb core layer comprises multiple layers of honeycomb cores, and a spacer layer is provided between the honeycomb cores of adjacent layers. 5. The composite sound-absorbing structure according to claim 4, characterized in that, the spacer layer is sound-absorbing paper, sound-absorbing cloth or non-woven fabric. 6. The composite sound-absorbing structure according to claim 1, characterized in that, the mesh lining is a fiber material mesh lining, a metal mesh lining, sound-absorbing paper, sound-absorbing cloth or non-woven fabric. 7. The composite sound-absorbing structure according to any one of claims 1 to 6, wherein the shape of each honeycomb hole in the honeycomb core layer is circular and/or polygonal. 8. A method for manufacturing a composite sound-absorbing structure, characterized in that the method comprises: Wrap the mesh liner on the outer surface of the honeycomb core layer; After the composite material is melted, it is sprayed on the outer surface of the mesh lining layer by a spray forming process to form a composite material layer; After the composite material layer is cooled, a through hole is opened on the composite material layer by a drilling process to form a sound-absorbing hole. 9. The method for manufacturing a composite sound-absorbing structure according to claim 8, characterized in that the method further comprises: A decorative layer is arranged on the outer surface of the composite material layer.