TWI505930B - Multi-media acoustic material - Google Patents

Description

Multi-media sound absorbing material

The present invention relates to sound absorbing materials, and more particularly to a sound absorbing material laid under the floor.

Sound absorbing materials, especially sound absorbing materials laid under the floor, are generally made of a pure rubber particle mixed adhesive. The material composition is single, but the sound absorption effect is not good. In addition, the pure rubber sound absorbing material is not easy to break. After the tile or stone floor of the surface layer is finished, since the thermal expansion and contraction degree of the tile or stone floor is smaller than that of the lower layer of the rubber sound absorbing material, the shrinkage or expansion of the lower layer sound absorbing material may cause the surface. The layers of tiles or stone floors and joints between them break.

In view of the above, it is an object of embodiments of the present invention to provide a sound absorbing material having a better sound absorbing effect, and the sound absorbing material is less likely to cause cracking of the surface layer when it is laid under the floor.

The embodiment of the present application discloses that a sound absorbing material is formed by mixing adhesives of two or more kinds of material media. The material medium includes a rubber medium and other media such as cork. The rubber medium can be expressed as rubber foam (or "rubber foam") and rubber particles. At least a portion of the material medium is made of recycled material. For example, at least a portion of the rubber foam and rubber particles can be derived from a variety of waste recycled rubber materials. The sound absorbing material can be laid as an interlayer between the facing floor and the foundation after being pressed into a coil.

In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only Some embodiments of the invention, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope should fall within the scope of the present invention.

FIG. 1 is a schematic view showing the components of a sound absorbing material disclosed in an embodiment of the present invention. In this embodiment, the sound absorbing material 100 is composed of two or more material media. In FIG. 1, the sound absorbing material 100 includes a first material medium 102 and a second material medium 104. Adhesives 106 are bonded between the different materials. The adhesive 106 includes a polyurethane (PU) adhesive.

The existing sound absorbing materials are generally made of a pure rubber particle mixed PU adhesive, and the material composition is single, but the sound absorbing effect is not good. The sound absorbing material disclosed in the embodiment of the invention is composed of a plurality of material media. Studies have shown that sound waves have an angle of incidence and a reflection angle when they encounter a medium. Different media, different angles of reflection and angle of incidence. Since the multi-media sound absorbing material has a variety of media, when the sound wave encounters these different media, different incident angles and reflection angles are generated, and the sound waves between different incident angles and reflection angles can cancel each other, thereby achieving the sound insulation effect. In addition to superior sound absorbing properties, the sound absorbing material also has the advantages of flame retardancy and antibacterial properties.

In the present embodiment, the first material medium 102 may be the rubber medium 200 shown in FIG. 2, and the second material medium 104 may be other material medium such as the fiber medium 500.

FIG. 2 illustrates the components of the rubber medium 200. The rubber medium includes rubber foam 202 and rubber particles 204. The rubber foam 202 is a main constituent material of the sound absorbing material 100. In an embodiment of the invention, the rubber foam 202 comprises an EPDM (ethylene propylene diene) rubber foam sponge. In another embodiment of the invention, the rubber foam 202 may comprise a styrene butadiene foam material. In other embodiments of the invention, the rubber foam 202 may also include other rubber foam materials, or a combination of various rubber foam materials. The rubber foam 202 has the advantages of flame retardancy and antibacterial properties.

The rubber particles 204 and other material media, such as the second material media 104, are excipients of the sound absorbing material 100.

Figure 3 illustrates the source of the rubber medium 200. The rubber medium 200 is composed of different kinds of rubber materials. At least a portion of the various rubber materials can include various recycled rubber materials 302, such as used tires 304 and other waste recovered rubber articles 306. The other waste-recycled rubber articles include rubber waste in various types of tires, rubber materials in running shoes, rubber materials in men's shoes, and rubber materials (such as heels) in women's shoes. For example, the various recycled rubber materials 302 may be first cut into rubber particles and then used in the pressed coils described below.

Figure 4 illustrates the components of the rubber particles 204. The rubber particles 204 may be derived from a variety of recycled rubber materials 302, the major components of which include styrene butadiene rubber 402, nitrile rubber 404, vulcanized rubber 406, or a combination of one or more of the foregoing rubber materials.

Figure 5 illustrates the source of the fibrous medium 500. The source of fibrous media 500 includes softwood 502, wood chips 504, and husks 506, such as betel nut shells or coconut shells. The filamentary fibers of the areca nut shell or the coconut shell can increase the tensile force of the sound absorbing material 100. The fibrous medium 500 can be derived from various types of recycled wood or wood fibers.

Fig. 6 illustrates a specific component of a sound absorbing material 600 in an embodiment of the present invention. The sound absorbing material 600 is a specific example of the sound absorbing material 100. As an example, the sound absorbing material 600 includes specific components including rubber foam 202, rubber particles 204, softwood 502, wood chips 504, and a shell 506 such as a coconut shell. The rubber foam 202 is the main raw material of the sound absorbing material 600, and the proportion is about 30-100%. Other materials are auxiliary materials for the sound absorbing material 600, and the proportion is about 0-30%. The sound absorbing material 600 has a density of 300 to 800 kg/m3. In other embodiments, the sound absorbing material 600 can comprise any combination of at least two or more of the foregoing materials, but one of which must be a rubber foam 202.

FIG. 7 illustrates a web 702 and a sheet 704 which are pressed by the sound absorbing material 100. For example, the sound absorbing material 100 may be adhered by an adhesive and pressed to form a web 702 as shown in FIG. The pressing process is known to those of ordinary skill in the art and will not be described herein. For example, the size of the web 702 can be between 3-12 mm in thickness, 1.22 m in width, and 10-20 m in length. Of course, the thickness, width and length of the web 702 can be varied according to the needs of the user. The web 702 can be freely cut by the user and laid between the facing floor and the foundation to achieve a sound insulation effect.

As previously mentioned, the sound absorbing material 100 can be comprised of any two or more material media, such as rubber foam 202, rubber particles 204, and other material media such as fibrous media.

Preferably, the sound absorbing material 100 can have different major components for different facing floors. When the facing floor is a wooden floor, the major components of the sound absorbing material 100 may include rubber foam 202 and rubber particles 204. When the facing floor is a tile or stone floor, the major components of the sound absorbing material 100 may include rubber foam 202, rubber particles 204, and softwood 502.

Fig. 8 - Fig. 11 illustrate an application in which a sound absorbing material is laid under different flooring layers. In other embodiments, other processes may be used to lay the sound absorbing material.

The sound absorbing material can be pressed into a coil and laid under different floor layers. As noted above, the sound absorbing material 100 can have different major components for different facing floors. The sound absorbing material 800, the sound absorbing material 900, and the sound absorbing material 1000 described below may have the same or different components or densities, and are specific examples of the sound absorbing material 100. The thicknesses of the cement slabs, cement mortar layers, glues and sound absorbing materials described below are also only examples, and may have different thicknesses in different situations.

Fig. 8 illustrates an application in which a sound absorbing material 800 is formed into a roll and laid under a wooden floor. A 20-25 mm thick cement mortar layer 804 is laid on a conventional cement floor 802 of about 150 mm. Waterproof treatment is performed on the cement mortar layer 804. This step of waterproofing is very important. The web made of the sound absorbing material 800 is laid on the water repellent treatment layer 806, and the web has a thickness of about 5 mm. The splint 808 is laid over the sound absorbing material 800, and then the wooden floor 810 is laid on the splint 808. The sound absorbing material 800 and the water repellent treatment layer 806 are connected by a glue 812. The splint 808 and the sound absorbing material 800, as well as the splint 808 and the wooden floor 810, are also joined by glue 812.

Fig. 9 illustrates an application in which a sound absorbing material 900 is formed into a roll and laid under a tile. A 20-25 mm thick cement mortar layer 804 is laid on a conventional cement floor 802 of about 150 mm. Waterproof treatment is performed on the cement mortar layer 804. This step of waterproofing is very important. A coil made of the sound absorbing material 900 is laid on the water repellent treatment layer 806, and the web has a thickness of about 4.5 mm. Tile 902 is then laid over the web of sound absorbing material 900. The sound absorbing material 900 and the water repellent treatment layer 806 are connected by glue 812. The sound absorbing material 900 and the ceramic tile 902 are also connected by a glue 812 having a thickness of about 8 mm.

Fig. 10 and Fig. 11 illustrate an application in which a sound absorbing material 1000 is formed into a roll and laid under a marble floor. Fig. 10 and Fig. 11 respectively illustrate different kinds of laying processes. Fig. 10 illustrates a sound absorbing material 1000 which is laid on a cement mortar layer after being formed into a coil. Fig. 11 illustrates a sound absorbing material 1000 which is formed into a coil and laid under a cement mortar layer.

In Fig. 10, a 20-25 mm cement mortar layer 804 is laid on a conventional cement floor 802 of about 150 mm. Waterproof treatment is performed on the cement mortar layer 804. This step of waterproofing is very important. The web made of the sound absorbing material 1000 is laid on the water repellent treatment layer 806, and the web has a thickness of about 5 mm or about 10 mm. A marble floor 1002 is then laid over the web of sound absorbing material 1000. The sound absorbing material 1000 and the water repellent treatment layer 806 are connected by a glue 812. The sound absorbing material 1000 and the marble floor 1002 are also connected by a glue 812 having a thickness of about 8 mm.

In Fig. 11, a water repellent treatment is performed on a conventional cement floor 802 of about 150 mm. This step of waterproofing is very important. The web made of the sound absorbing material 1000 is laid on the water repellent treatment layer 806, and the web has a thickness of about 5 mm or about 10 mm. A 20-25 mm thick layer of cement mortar 804 is then laid over the web of sound absorbing material 1000. The sound absorbing material 1000 and the water repellent treatment layer 806 are connected by a glue 812. The cement mortar layer 804 and the marble floor 1002 are also connected by a glue 812 having a thickness of about 8 mm.

The sound absorbing material disclosed in the embodiments of the present invention has at least the following advantages: (1) using different kinds of material media to enhance the diversity of the material medium to enhance the sound insulation effect; (2) the sound absorbing material mainly composed of rubber foam and the flame retardant And the advantages of antibacterial; (3) the use of waste rubber recycling materials, cork, wood chips or areca shell as a material medium, reducing the manufacturing cost of the sound absorbing material and achieving environmentally friendly effects; (4) when the surface layer is tile or stone floor When the sound absorbing material comprises rubber foam or cork, it will break when the thermal expansion and contraction reaches a certain level. Therefore, unlike the thermal expansion and contraction of the sound absorbing material composed of a single rubber particle, the surface of the surface layer may be damaged. The sound absorbing material according to the embodiment of the present invention does not cause damage to the tile or stone surface layer.

The sound absorbing material disclosed in the present invention has superior sound absorbing properties. For example, a sound absorbing material made by an embodiment of the present invention passes the very strict industrial noise record INR 155 test conducted by the Commonwealth Scientific and Industrial Research Organization (CSIRO). . In this test, the tile size for the test was 300mm X 300mm X 9mm. The sound absorbing material used for the test was 4.5 mm thick, laid under the tile, and glued to the tile. The cement mortar layer laid under the sound absorbing material for testing was only 15 mm thick. The test environmental conditions were: temperature 19 ° C, relative humidity 73%, atmospheric pressure: 1012 hPa.

Table 1 below is a test result issued by the Australian Institute of Science and Technology, which shows that the sound absorbing material disclosed in the present invention has superior sound absorbing properties.

100. . . Sound absorbing material

102. . . Material medium

104. . . Material medium

106. . . Adhesive

200. . . Rubber medium

202. . . Rubber foam

204. . . Rubber particles

302. . . Rubber material

304. . . Waste tire

306. . . rubber products

402. . . SBR

404. . . Nitrile rubber

406. . . Vulcanized rubber

500. . . Fiber medium

502. . . cork

504. . . Sawdust

506. . . Husk

600. . . Sound absorbing material

702. . . Coil

704. . . Sheet

800. . . Sound absorbing material

802. . . Cement floor

804. . . Cement mortar layer

806. . . Waterproof treatment layer

808. . . Splint

810. . . Wooden floor

812. . . glue

900. . . Sound absorbing material

902. . . ceramic tile

1000. . . Sound absorbing material

1002. . . Marble floor

In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only Some embodiments of the invention, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope should fall within the scope of the present invention.

1 is a schematic view showing the components of a sound absorbing material disclosed in an embodiment of the present invention.

Figure 2 is a component of a rubber medium in an embodiment of the invention.

Figure 3 is a source of a rubber medium in an embodiment of the invention.

Figure 4 is a component of rubber particles in an embodiment of the invention.

Figure 5 is a source of fibrous media in an embodiment of the invention.

Figure 6 is a specific component of a sound absorbing material in an embodiment of the present invention.

Fig. 7 is a view showing a web and a sheet which are pressed by a sound absorbing material in an embodiment of the present invention.

Figure 8 is an application in which a sound absorbing material is formed into a coil and laid under a wooden floor.

Figure 9 is an application in which a sound absorbing material is made into a coil and laid under a tile.

Figure 10 is an application in which a sound absorbing material is formed into a coil and laid under a marble floor, wherein a coil made of a sound absorbing material is laid on the cement mortar layer.

Figure 11 is an application in which a sound absorbing material is formed into a coil and laid under a marble floor, wherein a coil made of a sound absorbing material is laid under the cement mortar layer.

100. . . Sound absorbing material

102. . . Material medium

104. . . Material medium

106. . . Adhesive

Claims (20)

A sound absorbing material, characterized in that the component of the sound absorbing material comprises two or more medium materials, and the material medium forms a single layer of sound absorbing material. The sound absorbing material according to claim 1, wherein the components of the sound absorbing material are bonded by an adhesive. The sound absorbing material according to claim 1, wherein the sound absorbing material component comprises a rubber medium. The sound absorbing material according to claim 3, wherein the rubber medium comprises rubber foam and rubber particles. The sound absorbing material according to claim 4, wherein the rubber medium is made of a different kind of rubber material. The sound absorbing material according to claim 5, wherein the different rubber materials include various recycled rubber materials. The sound absorbing material according to claim 6 is characterized in that the sources of the various recycled rubber materials include: waste recycled tires and rubber materials in used recycled shoes. According to the sound absorbing material described in claim 6 of the patent application, The components of the different rubber materials include: styrene butadiene rubber, nitrile rubber and vulcanized rubber. The sound absorbing material according to claim 1, wherein the sound absorbing material component includes other media in addition to the rubber medium. The sound absorbing material according to claim 9 is characterized in that the other medium comprises a fibrous medium. The sound absorbing material according to claim 10, wherein the fibrous medium is made of cork, wood chips or husks. The sound absorbing material according to claim 1, wherein the sound absorbing material is pressed into a coil or a sheet. The sound absorbing material according to the first aspect of the invention is characterized in that the sound absorbing material is applied as an interlayer under the floor and on the foundation. The sound absorbing material according to claim 13 is characterized in that, when the facing floor is a wooden floor, the components of the sound absorbing material comprise rubber foam and rubber particles. The sound absorbing material according to claim 13 is characterized in that, when the facing floor is a tile or a stone floor, the sound absorbing material component comprises rubber foam and cork. A sound absorbing material, which is laid between a surface layer and a foundation to provide a sound insulation effect, and is characterized in that: a component of the sound absorbing material A sub-layer comprising two or more material media and bonded by an adhesive to form a single layered structure, the two or more material media comprising at least two of the following material media, one of which is a rubber foam: rubber Foam; rubber particles; and fibrous medium, at least a portion of the rubber foam, rubber particles or fibrous medium being made of recycled material. The sound absorbing material according to claim 16, wherein the recycled material comprises a waste recycled rubber material, and the components of the waste recycled rubber material include: styrene butadiene rubber; nitrile rubber; and vulcanized rubber . The sound absorbing material according to claim 16, wherein the recycled material comprises recycled fiber material, and the material source of the recycled fiber material comprises: cork; wood chips; and a husk. The sound absorbing material according to Item 16 of the patent application, characterized in that the proportion of the rubber foam in the component of the sound absorbing material is 30% or more. The sound absorbing material according to claim 16, wherein the rubber particles, the fiber medium, or a combination of the two is in a proportion of 30% or less of the components of the sound absorbing material.